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Method for preparing silk fibroin nanosphere
InactiveCN106729982ASimple and efficient operationEasy to get equipmentOrganic active ingredientsPeptide/protein ingredientsFibroinChemistry
The invention discloses a method for preparing silk fibroin nanospheres. The method comprises the following steps: degumming mulberry silk or tussah silk so as to obtain silk fibroin, dissolving and dialyzing the silk fibroin so as to form a silk fibroin solution of certain concentration, uniformly mixing absolute ethyl alcohol with the silk fibroin solution in a certain ratio, freezing, centrifuging, washing, and drying, thereby obtaining the silk fibroin nanospheres. Functional silk fibroin microspheres can be prepared by mixing the silk fibroin solution with functional protein molecules such as bFGF-2, IGF-1, EGF, BMP-2 and OP-1. The method is safe, simple and convenient in preparation process and small in pollution, and the silk fibroin nanospheres which are uniform in particle size can be stably prepared, are applicable to injection, and can be applied to fields such as medicine carriers and slow-release systems.
Owner:ZHEJIANG UNIV +1
6-amino-6-deoxyinulin as well as preparation and application thereof
ActiveCN102060942AImprove high-value utilizationHigh reactivityOrganic active ingredientsAntinoxious agentsSulfonyl chlorideLeaving group
The invention relates to fields of daily chemicals and pharmaceuticals industry, in particular to 6-amino-6-deoxyinulin as well as preparation and application thereof. In the 6-amino-6-deoxyinulin shown as a formula (I), the average value range of n is 10-35. The preparation comprises the steps of undergoing a helogenation reaction of inulin or undergoing esterification of inulin and sulfonyl chloride, respectively undergoing a reaction of the product obtained through the helogenation reaction of the inulin or the esterification and sodium azide or azido lithium at a temperature of 40-70 DEG C for 8-24 hours to obtain 6-azido-6-deoxyinulin, and reducing the 6-azido-6-deoxyinulin by utilizing triphenylphosphine or lithium aluminium hydride to obtain the 6-amino-6-deoxyinulin. In the invention, the 6-amino-6-deoxyinulin is obtained through an effective synthetic means; an inulin six-position easily-leaving group is obtained through utilizing halogen to substitute the primary hydroxyl ofthe inulin or through the esterification of inulin and sulfonyl chloride; and the 6-amino-6-deoxyinulin with high substitution is obtained through azido nucleophilic substitution and reduction. The 6-amino-6-deoxyinulin synthesized by the preparation method provided by the invention is simple in the synthetic step and easy to popularize; and the required equipment and raw materials are easy to get. The formula (I) is shown in the specification.
Owner:YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
Preparation method of high-strength super-hydrophobic paper on the basis of layer by layer self-assembly and thermal induction treatment
ActiveCN107503228ASuperior superhydrophobic propertiesSimple equipment and operationFlexible coversWrappersIonINDUCTION TREATMENT
The invention relates to a preparation method of high-strength super-hydrophobic paper on the basis of layer by layer self-assembly and thermal induction treatment, and belongs to the technical field of post-processing of paper. The preparation method includes the steps of: 1) soaking common paper in a chitosan solution being 2-3 g / L in concentration for 10-20 min, moving the paper out, and washing the paper in deionized water for 3-5 times, and drying the paper for 10-20 min at 60-80 DEG C; 2) soaking the processed paper in a hexadecyl trimethoxysilane graft-modified nano TiO2-ethanol solution for 10-20 min, moving the paper out, and washing the paper in deionized water for 3-5 times, and drying the paper for 10-20 min at 60-80 DEG C, wherein the concentration of the hexadecyl trimethoxysilane graft-modified nano TiO2-ethanol solution is 2-4 g / L; 3) repeating the steps 1) and 2) for 20-30 times, and finally processing the treated paper for 20-30 min at 140-160 DEG C to form the high-strength super-hydrophobic paper. The preparation method is simple and employs simple equipment, overcomes the defects that preparation methods of super-hydrophobic paper in the prior art are complex in steps and need complex and expensive equipment. The preparation method is suitable for industrial production.
Owner:KUNMING UNIV OF SCI & TECH
Secret sea cucumber preparation method capable of removing fish smell at low temperature
InactiveCN103948074ASimple preparation processEasy to get equipmentFood preparationFish mealHealth maintenance
The invention belongs to the technical field of seafood processing, and relates to a secret sea cucumber preparation method capable of removing fish smell at low temperature. The method comprises the six steps of processing fresh sea cucumber, removing the fish smell of the sea cucumber, blending traditional Chinese medicines, decocting yellow rice wine medicine soup, secretly making the sea cucumber and carrying out freeze drying; the method concretely comprises the steps of processing the fresh sea cucumber for later use, feeding ferment liquid into water to prepare fish smell removal liquid, and soaking the sea cucumber into the fish smell removal liquid to remove the fish smell; blending all the traditional Chinese medicines in proportion, and decocting the yellow rice wine medicine soup by yellow rice wine; putting the sea cucumber into the yellow rice wine medicine soup, and secretly making the sea cucumber; and finally, carrying out cold drying by a freeze drying device to obtain the sea cucumber finished product with the fish smell removed at low temperature. The preparation method has the advantages that preparation technology is simple and equipment is easily available; the sea cucumber finished product is rich in nutrition, good in low-temperature fish smell removal effect, obvious in health care and health maintenance effects, good in mouth feel and friendly to edible environment.
Owner:QINGDAO JINGUYUAN LIFE TECH
Amphiphilic amido inulin and preparation method thereof
The invention relates to the field of daily chemicals and the medicine industry, in particular to an amphiphilic amido inulin and a preparation method thereof. The amphiphilic amido inulin is shown in a formula (1), wherein R is H, CH3, CH3CH2CH2, (CH3)2CH or C6H5; and the average numeric area of n is 10-35. The preparation method comprises the following steps of: performing halogenating reaction on the primary hydroxyl of inulin; after reaction, reacting with sodium azide or lithium azide at 40-70 DEG C for 8-24 hours; purifying to obtain 6 azide-3,4-succinate-6 deoxidized inulin; and reducing the 6 azide-3,4-succinate-6 deoxidized inulin by utilizing triphenylphosphine, so as to obtain the amphiphilic amido inulin. According to the pepaation method, the amphiphilic amido inulin is obtained by virtue of an effective synthesis means, halogen is used for replacing the primary hydroxyl of inulin so as to cause that the sixth-site group of the inulin is ionized easily, acyl is used for protecting the naked hydroxy, at the othe sites, of the inulin, azido is used for performing nucleophilic substitution on the sixth-site group which is ionized easily, and the product is reduced so as to obtain the amphiphilic amido inulin with high substitution degree. The preparation method has the advantages that the synthesis step is simple, popularization is easy, and required equipment and raw materials are easily available. The formula (1) is shown in the specification.
Owner:YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
Method for manufacturing micro-channel rapidly on basis of 3D printing
InactiveCN109395787AEasy to get equipmentMaterials are readily availableAdditive manufacturing apparatusLaboratory glasswaresPolyvinyl acetateWhole body
The invention belongs to the technical field of micro-channel manufacture and discloses a method for manufacturing a micro-channel rapidly on the basis of 3D printing. The method comprises following specific steps: S1, the shape of the channel is designed by computer-aided software and stored as an STL (standard template library) model; S2, the STL model is converted into a printing path track ofa 3D printer by slicing software; S3, a PVA (polyvinyl acetate) water-soluble material is printed on a printing substrate by 3D printing according to the designed track, and a channel mask is manufactured; S4, the printing substrate is taken down, glue is poured to the printing substrate, and then the printing substrate is left to stand; S5, cleaning is performed: after the glue is cured, the whole body is put in water and subjected to ultrasonic cleaning, PVA is dissolved, and the micro-channel is manufactured. By means of the water-soluble 3D printing material, the required micro-channel mask is manufactured with the 3D printing technology and encapsulated with glue. The method does not need chemical processes such as etching and the like and has the advantages of high flexibility, low cost and good encapsulating effect.
Owner:GUANGDONG UNIV OF TECH
N-(ethylamino) inulin and preparation and application thereof
ActiveCN101824102AImprove high-value utilizationHigh reactivityOrganic active ingredientsAntinoxious agentsEthylenediamineChemical industry
The invention relates to the field of daily health products and the pharmaceutical industry, in particular to an N-(ethylamino) inulin and preparation and application thereof. The N-(ethylamino) inulin is as shown in a formula (1), wherein the average value of n ranges from 10 to 35. The preparation method comprises the following steps of: halogenating or esterifying the inulin with sulfonic acid chloride; then reacting the inulin for 8 to 24 hours at the temperature of 40 to 90 DEG C; and purifying the inulin to obtain the N-(ethylamino) inulin, wherein the molar weight of the anhydrous ethylenediamine is 30 to 40 times the weight of the inulin. The obtained compound can be used as an antioxidant. The preparation has the advantages of simple synthetic process, easy popularization and easily available needed equipment and raw materials. The product obtained by the invention can be widely applied to the fields of biology, medicament, foods, chemical industry and the like.
Owner:YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
Free-water-surface cascaded ecological wetland and water purification method thereof
InactiveCN110143721ALandscape with great potentialRemoval of functional divisionsWater contaminantsMultistage water/sewage treatmentPurification methodsEmergent plant
The invention relates to a free-water-surface cascaded ecological wetland and a water purification method thereof. The free-water-surface cascaded ecological wetland comprises a bank slope, and further comprises a synchronous nitrification-denitrification functional zone, an aquatic plant pollution-reducing functional zone, a porous medium filter bed filtration and phosphorus removal functional zone and a submerged plant ecological diversity restoration functional zone sequentially arranged along a water flow direction. The water inlet of the free-water-surface cascaded ecological wetland is provided with a wetland water inlet weir plate, and the effluent outlet of the free-water-surface cascaded ecological wetland is provided with a wetland effluent weir plate; the bank slope is providedwith an ecological slope protection structure with a slope of no more than 1 / 3; and the ecological slope protection structure comprises submerged plants, emergent plants and terrestrial plant belts planted from the bottom of the slope to the top of the slope. The functional zones of the free-water-surface cascaded ecological wetland in the invention are specially designed and constructed accordingto the requirements of water purification, so organic matters, suspended matters and nitrogen and phosphorus nutrients are effectively removed; COD, NH3-N and TP in wetland effluent meets requirements on class-IV water quality; the concentration of TN is less than 10 mg / L; and the wetland effluent meets requirements on general landscape water and has the same biodiversity index as general landscape water.
Owner:SOUTHEAST UNIV
Smart phone-based multi-media teaching approach
The invention brings forward a smart phone-based multi-media teaching approach. A projector screen (1), a smart phone (2), a program unit (3), a computer (4), a teaching material key point unit (5), a teacher unit (6), and a microphone (7) are arranged. The program unit (3) is installed in the smart phone (2) and the computer (4); and the teaching material unit opened by the teacher unit (6) and displayed on the projector screen (1) and the position of the finger at the phone screen is the position of the mouse pointer at the teaching material unit. According to the invention, on the basis of combination of the smart phone and the teaching, a loudspeaker and a pointing tool are unified and are installed at the smart phone. The equipment are simple and can be found easily; the operation is convenient and easy popularization can be realized, so that some defects in the existing multi-media teaching approach can be overcome. Moreover, software only needs to be installed by one time and can be used repeatedly by multiple times; the phenomenon that the teacher holds a laser pen in one hand and a loudspeaker in the other during teaching can be avoided, so that the teaching becomes convenient; and the learning efficiencies of students in the classroom can be improved beneficially and the multi-media teaching approach development can be promoted.
Owner:NANJING DAWU EDUCATION TECH
Method for performing geologic and topographic measurement by utilizing High One quad-rotor plane
InactiveCN104359458ASimple equipmentEasy to get equipmentProfile tracingMeasuring equipmentReal Time Kinematic
The invention relates to a method for performing geologic and the topographic measurement by utilizing a High One quad-rotor plane. The method comprises the following steps: assembling RTK (Real-time kinematic) measurement instrument and a GPS onto the High One quad-rotor plane to form controllable unmanned measuring equipment; then introducing information and related command of data required for measurement into the equipment, sequentially performing the taking-off, landing calibration, data acquisition and the like of the measurement equipment, inputting the data into a computer after the acquisition of the data required is completed, drawing a geologic-topographic map by utilizing AutoCAD software through the data acquired by the measurement equipment, thus completing the measurement. According to the method, the equipment is simple and available, the operation is easy, the economical practicability are strong, and the time and cost can be saved, so that the method is a method which can complete the geologic-topographic measurement work for places where people cannot reach or higher danger exists.
Owner:芒市海华开发有限公司
High-strength and high-toughness polypropylene composite and preparation method thereof
The invention discloses a high-strength and high-toughness polypropylene composite. The composite includes, by weight, 71-93 parts of polypropylene, 11-20 parts of quartz fiber, 6-10 parts of a toughening agent, 2-10 parts of a compatibilizer, and 1-10 parts of tetra[beta-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol. The monofilament diameter of the quartz fiber is 6-12 micrometers, the softening point is 550-630 DEG C, and the density is 2.35-2.72 g / cm<3>. According to the high-strength and high-toughness polypropylene composite, under the combined action of the quartz fiber, the compatibilizer and the toughening agent, the composite has high strength and high toughness. Moreover, the invention further discloses a preparation method of the high-strength and high-toughness polypropylene composite, the preparation process is simple, raw materials and the equipment are easy to obtain, and scale production can be achieved.
Owner:SHANGHAI BANZAN MACROMOLECULE MATERIAL
Amphiphilic C-6-(4-(methyl amino)-1,2,3-triazole)deoxidized inulin derivatives and preparation and application thereof
ActiveCN103694377AImprove high-value utilizationHigh reactivityAntibacterial agentsBiocideInulinLithium azide
The invention relates to amphiphilic C-6-(4-(methyl amino)-1,2,3-triazole)deoxidized inulin derivatives and a preparation and an application thereof. The amphiphilic C-6-(4-(methyl amino)-1,2,3-triazole)deoxidized inulin derivatives are as shown in formula (1), wherein n has an average range of 10-35. The preparation method comprises the following steps: halogenating the primary hydroxyl group of raw material inulin, performing acyl protection of hydroxy groups at the other sites, allowing the inulin to react with sodium azide or lithium azide at 40-70 DEG C for 8-24 hours, performing purification to obtain 6-azido-3,4-diacyl-6-deoxidized inulin, allowing the 6-azido-3,4-diacyl-6-deoxidized inulin to react with propynylamine through a click chemistry reaction to obtain the amphiphilic C-6-(4-(methyl amino)-1,2,3-triazole)deoxidized inulin derivatives. The mole amount of the sodium azide or lithium azide is 1-2 times as many as the that of the raw material inulin; the mole ratio of the propynylamine to the raw material inulin is 2-3:1. The product of the invention is wide in application, simple in synthetic steps, easy to popularize, and easily available in required equipment and raw materials.
Owner:YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
Method for high-throughput rapid evaluation and/or screening of saline-alkali tolerant plants
InactiveCN111024667AEasy to get equipmentShort experiment cycleColor/spectral properties measurementsFluorescence/phosphorescenceChlorophyllinOrganic chemistry
The invention relates to a method for high-throughput rapid evaluation and / or screening of saline-alkaline tolerant plants. The method comprises steps of 1) obtaining in vitro branches of a tested plant to obtain a tested material; 2) treating the tested material in salt and / or alkali solution to obtain a treated material, and placing the tested material in the clear water to be treated to obtaina blank control material; 3) determining the chlorophyll content and / or chlorophyll fluorescence parameters of the treatment material and the blank control material, and 4) comparing the chlorophyll content and / or chlorophyll fluorescence parameters of the treatment material with the chlorophyll content and / or chlorophyll fluorescence parameters of the blank control material.
Owner:CHINESE ACAD OF FORESTRY
Rose rice wine oral liquid
InactiveCN104893924AMature technologyEasy to get equipmentDigestive systemAlcoholic beverage preparationProduct processingLycium chinense
The invention belongs to the technical field of healthcare product processing and relates to a rose rice wine oral liquid. Rose petals are used as main raw materials, Jimo rice wine, okra, Chinese wolfberries, dried figs, hawthorn fruits and honey are added, and the rose rice wine oral liquid with healthcare and conditioning functions is prepared. Firstly, the hawthorn fruits and the okra are cut into slices, placed into a stainless steel container and soaked in purified water, then the Chinese wolfberries and the dried figs are added, the mixture is heated and filtered, a mixed liquid is obtained for use, then fresh rose petals are collected, rinsed and placed in the container, after the mixed liquid is added, the mixture is heated and pulped, rose petal pulp is prepared, left to stand, cooled and filtered, a mixed rose liquid is obtained, finally, the Jimo rice wine is added to the rose mixed liquid, the mixture is stirred, heated, subjected to high-temperature sterilization and cooled to the room temperature, the honey is added, the mixture is evenly stirred, and a finished rose rice wine oral liquid product is obtained. The technology is mature, equipment is easy to obtain, and the product has high healthcare and nutritional value, and is convenient to eat, economical, practical, sanitary, safe and friendly in production and eating environment.
Owner:于希萌
Preparation method of crisp chestnut kernel and product thereof
ActiveCN104041865AReduce production energy consumptionReduce manufacturing costFood preparationFood safetyProduct gas
The invention discloses a preparation method of crisp chestnut kernels and a product thereof. The preparation process includes: (1) hulling clean fresh chestnuts to obtain chestnut kernels; (2) steaming the chestnut kernels at the 90 to 100 DEG C for 30-60 min; (3) pre-drying the chestnut kernels in hot air at 60 to 80 DEG C to water content of 20-60%; (4) putting the chestnut kernels into a high pressure resistant tank, vacuumizing and introducing 0.5-10.0 MPa high pressure gas for permeation treatment for 30-60 min; and (5) placing the chestnut kernels in vacuum drying equipment at 50 to 80 DEG C for vacuum drying, so as to obtain crisp chestnut kernels. The invention has the beneficial effects that the method has less preparation steps, simple process, easily available equipment and easily achieved preparation conditions; the method has low production energy consumption to effectively reduce the production cost; the food has high safety quality and satisfies the safe eating of different groups; and the prepared chestnut kernels have fragrant, sweet and crisp mouthfeel.
Owner:JIANGSUCHINA PALARICH
O-phenylenediamine schiff base derivative as well as preparation method and application thereof
ActiveCN106496065AMild conditionsShort reaction timeLuminescent compositionsImino compound preparationBenzaldehydeSolubility
The invention discloses an o-phenylenediamine schiff base derivative as well as a preparation method and application thereof. The structural formula of the derivative is as shown in the specification. During preparation, firstly, a certain volume of water and an appropriate amount of 4-nitryl o-phenylenediamine and benzaldehyde are added into a hydrothermal reaction kettle, and then a reaction is carried out at the temperature of 100 to 150 DEG C for 10 to 90 minutes; and after the reaction is finished, the reaction kettle is cooled to room temperature, and then reaction products are filtered, dried, recrystallized and dried, so that the o-phenylenediamine schiff base derivative can be obtained. The preparation method is non-poisonous or harmless, does not use any catalyst, and mainly utilizes high diffusion coefficient and high solubility of high-temperature water, so that the reaction is carried out efficiently and conveniently. The o-phenylenediamine schiff base derivative disclosed by the invention is high in chemical stability and high in solubility, and has a luminescent property.
Owner:重庆信人科技发展有限公司
High-moisture-penetrability polyurethane hot melt adhesive and preparation method thereof
InactiveCN111057510AEasy to makeNo pollution in the processPolyureas/polyurethane adhesivesPolyesterPolymer science
The invention relates to a high-moisture-penetrability polyurethane hot melt adhesive and a preparation method thereof. The polyurethane hot melt adhesive is prepared from, by weight, 20 to 40 parts of polyester polyol, 30 to 60 parts of polyether polyol, 0.05 to 0.2 part of an antioxidant, 0.01 to 0.1 part of a catalyst and 10 to 30 parts of isocyanate. The high-moisture-penetrability polyurethane hot melt adhesive has high cohesiveness under the compounding action of the polyester polyol, the polyether polyol, the antioxidant, the catalyst and isocyanate, meanwhile, the moisture penetrability can reach 85% or above, and the high-moisture-penetrability polyurethane hot melt adhesive is free of solvent volatile matters, environment-friendly and pollution-free. Besides, the preparation method of the high-moisture-penetrability polyurethane hot melt adhesive is simple in preparation process, raw materials and equipment are easy to obtain, and large-scale production can be realized.
Owner:VALENCE BONDING TECH SHANGHAI CO LTD
Polypropylene composite material with higher toughness at low temperature and preparation method of composite material
InactiveCN109721834AImprove low temperature toughnessImprove tensile propertiesPropionateGlass fiber
The invention discloses a polypropylene composite material with higher toughness at low temperature. The composite material comprises the following components: 60-80 parts of polypropylene, 10-25 parts of long glass fibers, 3-12 parts of a compatibilizer, and 1-10 parts of pentaerythnityl tetrakis-[beta-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]. According to the composite material and methodprovided by the invention, the long glass fibers and the pentaerythnityl tetrakis-[beta-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] are added into the polypropylene, and action of the compatibilizer is combined, so that the polypropylene composite material has good low-temperature toughness, large tensile strength, excellent antistatic ability and good thermal stability. The invention also discloses the preparation method of the polypropylene composite material with the higher toughness at the low temperature. The method provided by the invention has a simple preparation process, easily-available equipment and raw materials, and is suitable for factory large-scale production.
Owner:SHANGHAI BANZAN MACROMOLECULE MATERIAL
Cleaning method for filter core used for hydrogen peroxide production process
The invention relates to a cleaning method for a filter core used for a hydrogen peroxide production process. The cleaning method comprises the steps of immersing the filter core in a solvent for 1-2 h; then cleaning for 0.5-2h in an alkali solution; then neutralizing in an acid solution; and finally rinsing for 3-5 times in deionized water. Compared with a conventional cleaning method, the cleaning method provided by the invention has the advantages of being simple, convenient, cost-saving and time-saving.
Owner:ARKEMA HYDROGEN PEROXIDE CO LTD SHANGHAI
Method and identification kit box for identifying meat sources of yak and cattle
PendingCN108118096AEasy to get equipmentReduce testing costsMicrobiological testing/measurementDNA/RNA fragmentationEnzyme digestionTest sample
The invention relates to the field of food detection and provides a method for identifying meat sources of yak and cattle. The method comprises the following steps: extracting total DNA of a to-be-tested sample, and carrying out PCR amplification by virtue of an amplification primer, so as to obtain an amplification product; carrying out enzyme digestion on the amplification product by virtue of restriction endonuclease BspH I, carrying out electrophoresis detection on an enzyme digestion product, and judging the meat source of the to-be-tested sample according to the number of electrophoresisdetection strips. According to the method, only PCR amplification, enzyme digestion and electrophoresis detection are carried out, required equipment is simple, convenient and easily available, the detection cost is low, the operation is convenient, and the universality of the method for identifying the meat sources of the yak and the cattle is effectively improved; and the method is applicable to large-scale popularization and application, and a new thought is provided for the identification of adulteration of similar meat sources.
Owner:LANZHOU INST OF ANIMAL SCI & VETERINARY PHARMA OF CAAS
Multimedia teaching mode based on tablet computer
InactiveCN103714720AEasy to get equipmentEasy to operateElectrical appliancesTablet computerProjector
The invention provides a multimedia teaching mode based on a tablet computer, comprising an ordinary desktop computer (1), a large projector screen (2), a tablet computer (3), a program (4), a teacher (5) and a handout (6). The program (4) is installed in the tablet computer (3) and the ordinary desktop computer (1). The teacher drags the handout with the use of fingers to control up-and-down movement and zoom-in / out of the handout (6) in the tablet computer through a touch screen of the tablet computer (3), the interface of the desktop computer (1) changes at the same time, and finally, the interface of the tablet computer (3) is displayed in the large screen (2) and the interface of the large screen (2) is controlled by the touch screen of the tablet computer (3). The equipment of the invention is easy to obtain, convenient to operate and easy to popularize. The mode is novel and convenient, the program can be used repeatedly once installed, the touch screen function of the tablet computer is applied to teaching, communication between the teacher and students is facilitated, and the learning efficiency of students in class is improved.
Owner:NANJING DAWU EDUCATION TECH
Chitose aquagel evoked original position synthesis of super-paramagnetism nano ferriferrous oxide particles
InactiveCN100594186CGood biocompatibilityUniform particle size distributionFerroso-ferric oxidesIron nanoparticleParamagnetism
Owner:HARBIN INST OF TECH
High-strength high-fluidity polypropylene bonding resin and preparation method thereof
InactiveCN111073553AHigh strengthImprove liquidityNon-macromolecular adhesive additivesMacromolecular adhesive additivesPolymer sciencePolypropylene
The invention discloses polypropylene bonding resin with high strength and high fluidity. The polypropylene bonding resin comprises the following components in parts by weight: 60-81 parts of polypropylene; 12 to 20 parts of a polar compatilizer; 11 to 20 parts of talcum powder; 6-10 parts of paraffin particles; and 1-10 parts of quartz fiber; wherein the monofilament diameter of the quartz fiberis 6-12 [mu] m, the softening point is 550-630 DEG C, and the density is 2.35-2.72 g / cm<3>. According to the high-strength and high-fluidity polypropylene bonding resin, under the compounding action of the quartz fiber, the polar compatilizer, the talcum powder and the paraffin particles, the polypropylene bonding resin has high strength and high fluidity. In addition, the invention further discloses a preparation method of the polypropylene bonding resin, the preparation process is simple, raw materials and equipment are easy to obtain, and large-scale production can be achieved.
Owner:SHANGHAI BANZAN MACROMOLECULE MATERIAL
Method for ozone assisted ultraviolet degradation of pesticide residues in wolfberry fruits
The invention relates to a method for ozone assisted ultraviolet degradation of pesticide residues in wolfberry fruits, and belongs to the technical field of ozone assisted ultraviolet degradation of residues of the following two restricted pesticides: acetamiprid and imidacloprid, in the wolfberry fruits. The method comprises the following steps: spreading dry wolfberry fruits on a tray to make the accumulation thickness be 0.5-20cm; and placing the tray with the wolfberry fruits in an irradiation box, and irradiating with ultraviolet rays with the intensity of 450-900[mu]W / cm<2>, generated by an ultraviolet ray emission device in the irradiation box, for 4-12h, wherein the ultraviolet irradiation box is a closed box body, and 1.5-3.5mg / m<3> of ozone is distributed in the ultraviolet irradiation box. The method has the advantages of safety, healthiness, no residual, no influences on the quality of the wolfberry fruits, no pollution to environment, low carbon, energy saving, easy combination with present wolfberry fruit processing technologies, easy realization of industrialization, and cost saving.
Owner:青海出入境检验检疫局综合技术中心 +2
Novel heat-resistant polyurethane hot melt adhesive for lamp industry and preparation method thereof
InactiveCN111073583AImprove aestheticsImprove antioxidant capacityMineral oil hydrocarbon copolymer adhesivesNon-macromolecular adhesive additivesPolyesterPolymer science
The invention discloses a novel heat-resistant polyurethane hot melt adhesive for the lamp industry. The hot melt adhesive comprises the following components in percentage by weight: 20%-40% of polyester polyol, 20%-40% of polyether polyol, 10%-30% of tackifying resin, 0.2%-0.5% of an antioxidant, 0.01%-0.1% of a catalyst and 10%-30% of isocyanate. The invention also discloses a preparation methodof the novel heat-resistant polyurethane hot melt adhesive. The novel heat-resistant polyurethane hot melt adhesive prepared by reasonably compounding the polyester polyol, the polyether polyol, thetackifying resin, the antioxidant, the catalyst and the isocyanate has higher oxidation resistance, cohesiveness, heat resistance and tensile strength, is free of solvent volatile matters, environment-friendly and pollution-free, and improves the aesthetic problem of lamps in use. In addition, the preparation method is simple, raw materials and equipment are easy to obtain, and large-scale production can be realized.
Owner:VALENCE BONDING TECH SHANGHAI CO LTD
Chitosan quaternary amine salt gallate, synthetic method thereof and application thereof
ActiveCN102399304BImprove antioxidant capacityImprove thermal stabilityCosmetic preparationsToilet preparationsPolymer scienceGallic acid ester
The invention relates to the daily chemical field and the medicinal industry, and concretely relates to a chitosan quaternary amine salt gallate, a synthetic method thereof and an application thereof. A chitosan trimethyl quaternary amine salt is reacted with acylated gallic acid to obtain the chitosan quaternary amine salt gallate which has a structure represented by formula (1). The chitosan quaternary amine salt gallate obtained in the invention, which can be dissolved in water, has a synergic effect and allows the chitosan application to be enlarged, can be widely applied to the daily chemical field of medicines and the like.
Owner:YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
Method for preparing zinc cyanide co-production mixed sulfate by light oil cracking waste residue
InactiveCN101962197ASimple preparation processEasy to get equipmentMetal cyanidesChemistryDistillation
The invention relates to the technical field of comprehensive treatment and utilization of light oil cracking waste residue, in particular to a method for preparing zinc cyanide co-production mixed sulfate by the light oil cracking waste residue, and the main technical scheme comprises the following steps: washing the light oil cracking waste residue by zinc sulfate solution with the temperature of 40-60DEG C and the concentration of 5-10 percent, after air pump filtration, putting the waste residue into a reduced pressure distiller, performing low-temperature reduced pressure distillation and cooling to obtain zinc cyanide crystal, and distilling the residual liquid again to obtain the mixed sulfate. The method has not only simple and practicable preparation process and equipment but also low cost, and can remove the effect on the environment and creat products having certain economic value.
Owner:汪晋强
Polypropylene adhesive resin with high strength and high oxygen barrier property and preparation method thereof
PendingCN111040304AEasy to prepareRaw materials and equipment are readily availablePolypropylenePolymer chemistry
The invention relates to polypropylene adhesive resin with high strength and high oxygen barrier property and a preparation method thereof. The polypropylene adhesive resin comprises the following components in parts by weight: 65-82 parts of polypropylene, 10-18 parts of quartz fiber, 6-10 parts of mica powder, 12-20 parts of a compatilizer and 1-10 parts of a dioctadecyl ammonium salt, wherein the monofilament diameter of the quartz fiber is 6-12 [mu]m, the softening point of the quartz fiber is 550-630 DEG C, and the density of the quartz fiber is 2.35-2.72 g / cm<3>. The polypropylene adhesive resin has high strength and high oxygen barrier property under the compounding action of the quartz fiber, the mica powder, the polar compatilizer and the dioctadecyl ammonium salt, and is used forenhancing a polypropylene material, so the problems of poor transparency and poor oxygen barrier property of the polypropylene material are solved; besides, the preparation method of the polypropylene adhesive resin is simple in preparation process, uses easily-available raw materials and equipment and can realize large-scale production.
Owner:SHANGHAI BANGZHONG NEW MATERIAL
Carboxymethyl glycosaminoglycan derivative and preparation method and application thereof
ActiveCN109354632AThe synthesis steps are simpleRaw materials and equipment are readily availableFruits/vegetable preservation by coatingChemistryWater soluble
The invention relates to the field of foods, in particular to a carboxymethyl glycosaminoglycan derivative and a preparation method and application thereof. The structural formula of the carboxymethylglycosaminoglycan derivative is shown in the formula (1), wherein the average degree of polymerization n is within the range from 10 to 3000. The carboxymethyl glycosaminoglycan derivative is easy toprepare and easy to popularize, and the required device and raw materials are easy to obtain. Research shows that the carboxymethyl glycosaminoglycan derivative synthesized by using the method is good in water solubility, excellent in film forming property and refreshing property, capable of slowing loss of water in fruits and capable of being widely applied in the field of fruit refreshing. (Theformula is shown in the description.).
Owner:YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI +2
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