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Composite material for porous material and gel use thereof
InactiveCN1644221AImprove stabilityGood adhesionProsthesisCalcium biphosphateAlpha-tricalcium phosphate
A composition of porous material and gel for preparing artificial bone is prepared from collagen and porous material chosen from alpha-tricalcium phosphate / hydroxy apatite, beta-tricalcium phosphate / hydroxy apatite-coral, calcium phosphate / hydroxy apatite, calcium carbonatel tricalcium phosphate, etc.
Owner:徐小良
Medicament release structure carrying apertured and polyalcohol as well as its preparing method
ActiveCN101161299AReduce contentReduce the risk of long-term thrombosisSurgeryProsthesisControl releaseElution
The present invention relates to a hole for the medicine elution apparatus and a polymer carrying medicine releasing structure and the preparing method thereof. The invention includes an apparatus body which is arranged with large numbers of holes, the large number of holes are nano-scale holes with single dimension or double dimensions of a plurality of dimensions, namely n nano-scale holes with equal dimension arrangement or two or more asymmetrical dimension arrangement with the statistical average value including the pore diameter of pore depth, the holes are structure of medicine-carrying groove or pore, and the apparatus body includes or not includes an outermost membrane layer, the mixture of medicine and polymer exists in the hole and the mixture adheres to the surface of the apparatus body; the carrier carrying the medicine is no longer the simple hole or polymer, the holes and a few polymers commonly supports the active medicine and does controlled-releasing to the medicine, facilitates that the medicine has a strong adsorbability and a good controlled-releasing effect, as the content of the polymer is small the invention has the advantages of reducing the risk formed by the long-period thrombus and safer using and better treating effect.
Owner:LEPU MEDICAL TECH (BEIJING) CO LTD
Low-temperature-resistance flame-retardant photodiffusion polycarbonate composite material and preparation method thereof
ActiveCN103724972AImprove low temperature performanceDoes not affect light transmittanceTransmittancePolycarbonate
The invention discloses a low-temperature-resistance flame-retardant photodiffusion polycarbonate composite material and a preparation method thereof. The polycarbonate composite material comprises the following components in parts by weight: 400-900 parts of polycarbonate resin, 100-500 parts of organosilicone copolymer PC (polycarbonate) resin, 0.5-20 parts of sulfonate flame retardant, 1-20 parts of photo-diffusant, and 5-50 parts of an auxiliary. The preparation method comprises the following steps: uniformly mixing polycarbonate resin, organosilicone copolymer PC resin, a sulfonate flame retardant, a photo-diffusant and an auxiliary in a high-speed mixer; putting the mixture in a feed hopper of a double-screw extruder; and melting, extruding and granulating. The low-temperature-resistance flame-retardant photodiffusion polycarbonate composite material prepared by the method can fulfill high light transmittance, high haze of photodiffusion PC, various processing requirements and mechanical performance, has high flame retardance and excellent low temperature performance, and can be applied to various transparent products in the optical field, in particular applicable to products applied in a rigorous environment.
Owner:SHANGHAI CHANGWEI JINCI ENG PLASTIC
Ultraviolet screening agent, preparation method thereof, polylactic acid film containing ultraviolet screening agent and preparation method of polylactic acid film
ActiveCN104845301ANo effect on mechanical propertiesAdd lessFlat articlesPigment treatment with organosilicon compoundsScreening effectUltraviolet
The invention provides an ultraviolet screening agent, a preparation method thereof, a polylactic acid film containing the ultraviolet screening agent and a preparation method of the polylactic acid film. The ultraviolet screening agent prepared by taking nanometer titanium dioxide as a nuclear material and n-silicate ester as a nanometer silicon dioxide raw material and coating a nanometer silicon dioxide layer on the surface of nanometer titanium dioxide simultaneously has favorable ultraviolet screening effect and visible light permeating effect; the polylactic acid film prepared by preparing masterbatches through adding the ultraviolet screening agent and a thermal stabilizer into polylactic resin and then carrying out film pressing on the prepared masterbatches has favorable transparency and ultraviolet screening property; and the ultraviolet screening agent is nontoxic and strong in stability and is not easy to seep.
Owner:BEIJING INST OF CLOTHING TECH +1
Medicament elution instrument nanometer class colon washer machineole drug releasing structure and preparing method thereof
ActiveCN101199873AReduce the risk of long-term thrombosisNo effect on mechanical propertiesStentsSurgeryMicro arc oxidationPercent Diameter Stenosis
Owner:LEPU MEDICAL TECH (BEIJING) CO LTD
Compound medicament intravascular stent and preparation method thereof
ActiveCN101327343ANo effect on mechanical propertiesEffect on mechanical propertiesStentsSurgeryBiocompatibility TestingThrombus
The invention relates to a composite drug stent and a preparation method thereof. The stent includes a stent body and active drugs; wherein, the stent body is a perforated medical material with good biocompatibility, which can be made by optionally using stainless steel, cobalt-based alloy, titanium alloy, nickel-titanium alloy, or polylactic acid bio-polymer material; the active drugs include special endothelial progenitor cell antibody drug and anti-smooth muscle cell proliferation drug. The internal surface of the perforated stent body is fixedly provided with the special endothelial cell antibody drug, while the external surface of the perforated stent body is coated with the anti-smooth muscle cell proliferation drug. The preparation method includes as follows: (1) pretreating the surface of the stent body; (2) making holes; (3) post-treating the surface of the stent body; (4) dispensing medicines; (5) coating the external surface; (6) fixing the internal surface; (7) drying at low temperature. The preparation method can selectively absorb endothelial progenitor cells and facilitate in repairing endodermis, and can effectively inhibit the proliferation and migration of vascular smooth muscle cells, persistently and effectively reduce the newborn endangium, effectively prevent the stent from narrowing, and avoid the risk of tardive thrombosis.
Owner:LEPU MEDICAL TECH (BEIJING) CO LTD
Surface grafting and coating compound modification method for polyvinylidene fluoride membrane
ActiveCN107213803ANo effect on mechanical propertiesFirmly attachedMembranesSemi-permeable membranesHydrophilic coatingHydrophilic monomer
The invention relates to a surface grafting and coating compound modification method for a polyvinylidene fluoride membrane. The method comprises the following steps: generating a grafting point on the surface of the polyvinylidene fluoride membrane under a mild grafting modification condition without influencing the mechanical performance of the membrane; polymerizing a hydrophilic monomer on the surface of the membrane to form a hydrophilic grafted high-molecular chain, wherein the grafted high-molecular chain plays a role in anchoring on the surface of the membrane; finally, self-polymerizing and depositing polyphenol, and hybridizing the hydrophilic grafted high-molecular chain to form a hydrophilic coating layer. Under the anchoring effect of the grafted high-molecular chain between the coating layer and the membrane, the polyvinylidene fluoride membrane is attached stably, is prevented from falling easily, and has a good modification effect.
Owner:WUHAN UNIV OF TECH
Method for manufacturing silver-plated conductive fiber
InactiveCN102051803ANo effect on mechanical propertiesSave energyPhysical treatmentIonPlasma treatment
The invention provides a method for manufacturing a silver-plated conductive fiber. The method comprises the following steps of: a, performing plasma treatment on a fiber base material by using gas, and controlling discharge power of plasma to be 30 to 500W, vacuum air pressure to be 20 to 300 Pa, and the movement speed of the base material to be 0.5 to 50 m / min; b, placing the fiber base material which is subjected to plasma treatment in 20 to 500 g / L silver nitrate solution, and soaking for 5 to 60 minutes with stirring; c, performing plasma treatment on the fiber base material which is treated by the silver nitrate solution by using reduction gas, controlling the ion discharge power to be 30 to 500 W, vacuum air pressure to be 20 to 300 Pa and the movement speed of the base material to be 0.5 to 50 m / min, and reducing to form a silver-plated film; or controlling the movement speed of the fiber base material which is treated by the silver nitrate solution to be 0.5 to 50 m / min in a reduction gas furnace at the temperature of between 20 and 150 DEG C and under the air pressure of 20 to 300 Pa, and reducing to form the silver-plated film.
Owner:TIANNUO PHOTOELECTRIC MATERIAL
Synthetic method and application of epoxy vinyl ester resin with high bromine content
The invention belongs to the technical field of synthesizing resin flame retardant additives, and relates to a synthetic method and application of epoxy vinyl ester resin with high bromine content. The synthetic method is characterized by comprising the following steps: calculating components in a container by weight parts, firstly, adding 50-75 parts of bisphenol A epoxy resin with high bromine content and 8-20 parts of unsaturated carboxylic acid, raising the temperature to 80-140 DEG C for reacting in the presence of a catalyst and a polymerization inhibitor until the acid value is less than 30mgKOH / g, and then adding 10-40 parts of a diluent for stirring, diluting and cooling to obtain the final reaction product of epoxy vinyl ester resin with high bromine content. The product is used as a reactive-type flame retardant additive to mix with the non-flame retardant epoxy vinyl ester resin or unsaturated polyester resin by any proportion to obtain flame-retardant resin with different flame-retardant levels and prepare resin-based composite materials meeting the flame-retardant requirements. The preparation method in the invention has the characteristics of simple process, convenient operation and the like.
Owner:HUACHANG POLYMER EAST CHINA UNIV OFSCI & TECH
Hyperbranched poly(aryl ether ketone), preparation method and application thereof in viscosity modifier
The invention relates to a hyperbranched poly (ether ketone), a preparation method thereof and application of the material in viscosity modifiers. The hyperbranched poly(ether ketone) is prepared wit BB2-type monomers 2, 4, 6 trifluoro phenyl ketone and A2-type monomers hydroquinone, resorcin, bisphenol A, and hexafluoro-bisphenol A or biphenyl diphenol as reactants, potassium carbonate or sodium carbonate or the mixture of the potassium carbonate and the sodium carbonate as a salification agent, and sulfolane or N, N-dimethyl ketopyrrolidine as a solvent through mixing, salification, polycondensation reaction and after treatment. The solid content is 20 to 30 percent; the dosage of the salification agent is 1 to 1.1 time of the dosage of the A2 monomers. Fluorine terminated hyperbranched polyaryletherketone and hydroxy terminated superbranched polyaryletherketone are got respectively by adjusting the ratio of the dosages of the BB2-type and A2-type monomers. The hyperbranched poly (ether ketone) is characterized in that by adding the superbranched polyaryletherketone, the mechanical property and the thermostability of linear polyaryletherketone are not reduced while the melt viscosity of the linear polyaryletherketone is reduced.
Owner:JILIN UNIV
Method for synthesizing reactive halogen-free flame-retardant unsaturated polyester resin
The invention discloses a method for synthesizing reactive halogen-free flame-retardant unsaturated polyester resin. The method is characterized by taking dihydric alcohol, dibasic acid or dibasic acid anhydride, reactive phosphorus flame retardants such as 2- carboxyethyl (phenyl) phosphinic acid and phenyl hydroxymethyl phosphinic acid, and reactive silicon flame retardants such as dihydroxy diphenyl silane and dihydroxy dimethyl silane as basic materials, conducting esterification and polycondensation under the conditions of catalysts such as dibutyltin oxide and sodium acetate, and then adding diluent, thus preparing the halogen-free flame-retardant unsaturated polyester resin. The resin prepared by the method is especially applicable to the production of unsaturated polyester resin moulding compounds, glass fiber reinforced plastics and electrical plastic products, can meet the requirements of products on flame retarding and lightweight and has good properties.
Owner:SICHUAN DONGFANG INSULATING MATERIAL
Drain-type pipe piece for tunnel lining
ActiveCN102979535ANo need to increase intensityEnsure safetyUnderground chambersDrainageReinforced concreteSlurry
The invention discloses a drain-type pipe piece for tunnel lining. The drain-type pipe piece comprises a reinforced concrete pipe piece (1), a slurry injection hole (or a hoist hole) (1a) in the pipe piece (1), a load bearing steel bar (1b), and a concrete protective layer (1c) on the outer side; a water stop rubber block (2) capable of being expanded when being in contact with water is preburied in the concrete protective layer (1c) right opposite to one or two slurry injection holes (1a) of the pipe piece (1); a self-advancing type hollow anchor rod (3) is inserted in the slurry injection holes (or the hoist hole) (1a) of the pipe piece (1), then penetrates the water stop rubber block (2), and shoots out of the concrete protective layer (1c); and drain holes (3a) are formed in the rod wall of the outer end of the self-advancing type hollow anchor rod (3), and a filter column (4) used for filtering sand is plugged in the inner cavity of the self-advancing type hollow anchor rod (3). Lining built with the pipe pieces has a reliable drain function, and can reduce water pressure around the structure to ensure tunnel safety; and construction is convenient, small damage is caused to the pipe piece lining structure, and construction cost of the pipe piece lining is low.
Owner:SOUTHWEST JIAOTONG UNIV
Heat resistant paint for iron and steel
ActiveCN101067067ANo effect on physical propertiesNo effect on mechanical propertiesAnti-corrosive paintsOxidation-Reduction AgentRedox
The heat temperature resistant paint for iron and steel is prepared with ethyl borate 20-25 weight portions, silicone resin 15-25 weight portions, 5-10 wt% concentration polyvinyl butyal solution 5-10 weight portions, aluminum powder 15-20 weight portions, solvent 10-20 weight portions, and dispersant 1-2 weight portions. The present invention has three kinds of matter, including boric oxide, silicone resin and alumnia layer with reactive protection, melt film shielding protection and redox protection at high temperature separately combined, so that the paint has excellent high temperature iron and steel protecting function and capacity of reducing surface scale generating amount.
Owner:江阴市大阪涂料有限公司
Quaternary phosphonium salt pillared layered zirconium phosphate material, and preparation method and application thereof
The invention discloses a quaternary phosphonium salt pillared layered zirconium phosphate material, and a preparation method and an application thereof. The chemical formula of the quaternary phosphonium salt pillared layered zirconium phosphate material is as follows, R is methyl, butyl, phenyl or alkane with the length of a carbon chain of 8-20; X is Cl or Br; and m is 1, and n is 0.00288-0.174462. The preparation method comprises the steps of utilizing methylamine to prop up an interlayer spacing interval of zirconium phosphate, obtaining a methylamine-zirconium phosphate precursor, then adding a quaternary phosphonium salt into the methylamine-zirconium phosphate precursor for continuously carrying out reaction for a certain time, replacing the methylamine in the precursor and obtaining the quaternary phosphonium salt pillared layered zirconium phosphate material with white or light gray external appearance, and the quaternary phosphonium salt pillared layered zirconium phosphate material can be added into plastics, rubber, fibers, coatings, adhesives, paper and other materials for preparing an antibacterial or flame-retardant functional material, and be also used for removing algae in water and governing large-area red tide and water blooms in fresh water.
Owner:JINAN UNIVERSITY
Extrusion-type backing plate for photovoltaic cell and preparation method of backing plate
ActiveCN105462238AGuaranteed encapsulation effectImprove flame retardant performanceFinal product manufactureSynthetic resin layered productsPolyamideEngineering
The invention discloses an extrusion-type backing plate for a photovoltaic cell. The backing plate comprises an upper surface layer, a core layer and a lower surface layer, wherein the upper surface layer is composed of polyamide resin, filler, a flame retardant and additives, the core layer is composed of polypropylene resin and grafted polyethylene modified polyamide resin, filler, flame retardant and additives, the lower surface layer is composed of polyamide resin, flame retardant, a coupling agent and additives, the flame retardant is composed of a nanoscale inorganic flame retardant subjected to surface treatment and red phosphorus, the nanoscale inorganic flame retardant is selected from aluminum hydroxide and / or magnesium hydroxide of 10-100 nm, and a used surface treating agent is ethylene-based polyhedral oligomeric silsesquioxane of 1-5 nm. The extrusion-type backing plate is good in flame-retardant effect which reaches the A level through combustion tests, and it can be guaranteed that the flame retardant has no influence on the mechanical property, aging-resistant property, waterproof property, insulating property and the like of the extrusion-type backing plate.
Owner:SUZHOU DUCHAMPS ADVANCED MATERIALS CO LTD
Adhesion promoter of optical fiber coating and preparation method thereof
InactiveCN102167925AImprove adhesionGood water dispersionGroup 4/14 element organic compoundsCoatingsIsocyanateChemistry
The invention provides an adhesion promoter of an optical fiber coating, which comprises a compound represented by a formula I in the specification, wherein R1 is a methyl or an ethyl; R2 is a diisocyanate cyclic trimer group; R3 is an acrylic ester group; m and n are the numbers of repeated units, m is not less than 1 and not more than 30, n is not less than 1 and not more than 50; and X is -S-, -NH-. The adhesion promoter can be well aqueously dispersed in an aqueous ultraviolet curable coating, and has polymerization activity, so that the polymerization speed of the optical fiber coating is promoted, and the adhesion of the cured coating on an optical fiber substrate is improved. The invention also provides a preparation method of the adhesion promoter of the optical fiber coating, which comprises the step of synthesizing the adhesion promoter by using raw materials of polyethylene glycol monomethyl ether, diisocyanate cyclic trimer, siloxane and the like. All the raw materials are aqueous compounds, thus the environment is protected, the synthesis conditions are mild, and the operation is easy.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Composition for processing polystyrene porous material, polystyrene porous material and preparation method thereof
The invention discloses a composition for processing a polystyrene porous material, a polystyrene porous material and a preparation method thereof. The composition comprises the following components in percentage by weight: 65-88% of polystyrene, 7-30% of conductive filler and 0.1-5% of assistant, wherein the assistant at least comprises antioxidant. The porous material can be subjected to extrusion molding or injection molding by an extruder or other corresponding apparatuses, and has the advantages of permanent antistatic performance, electric conduction and low cost. Compared with the traditional material, the porous material disclosed by the invention can lower the cost by about 20% on the premise of keeping the volume resistivity and surface resistivity.
Owner:5ELEM HI TECH CORP
Biology polypeptide medicament blood vessel bracket and preparation method thereof
ActiveCN101313873ANo effect on mechanical propertiesEffect on mechanical propertiesStentsOrganic active ingredientsProgenitorBiopolymer
The invention relates to a biologic polypeptide medicine blood vessel support and a preparation method thereof. The biologic polypeptide medicine blood vessel support comprises a support body and active medicines. The support body which is medical material with pores and good biocompatibility is made from stainless steel, cobalt-base alloy, titanium alloy, nickel-titanium alloy or polylactic acid biopolymer; the active medicines comprise a biologic polypeptide medicine and a smooth muscle cell proliferation inhibition medicine. The support is characterized in that: the support body with the pores has the biologic polypeptide medicine fixed on the internal surface of the body and the smooth muscle cell proliferation inhibition medicine coated on the external surface of the body. The preparation me(3) carrying out the after-treatment of the surface of the support body; (4) preparing the medicines; (5) coating the external surface; (6) fixing the medicine onto the internal surface; (7) carrying out the process step of low temperature drying. The support can selectively absorb endothelium progenitor cells which quickly differentiate into endothelium cells to promote the restoration of the endothelium after the support is built in; the support can also effectively inhibit the proliferation and migration of vascular smooth muscle cells, persistently and effectively reduce the formation of a new inner membrane, effectively prevent restenosis inside the support, and avoid the risk of potentially fatal late thrombosis.
Owner:乐普(深圳)国际发展中心有限公司
Modified polypropylene fiber and preparing method
ActiveCN109778335AImprove compatibilityGood electrical conductivityElectroconductive/antistatic filament manufactureFlame-proof filament manufactureThermal conductivityMelt spinning
The invention relates to the field of modified polypropylene fibers, in particular to a modified polypropylene fiber and a preparing method. The preparing method includes the steps that graphene oxideand sulfydryl alkylamine react, and sulfydryl-modified graphene oxide is obtained; the sulfydryl-modified graphene oxide and vinyl POSS are subjected to a sulfydryl-alkene click chemical reaction, and vinyl-POSS-modified graphene oxide is obtained; the vinyl-POSS-modified graphene oxide and alkyl sulfhydryl are subjected to a sulfydryl-alkene click chemical reaction, then the graphene oxide is reduced, and a POSS / graphene composite material is obtained; the POSS / graphene composite material is added into polypropylene granules, melting granulation is conducted, and modified polypropylene master granules are obtained; the modified polypropylene master granules and polypropylene granules are subjected to melt spinning, and the modified polypropylene fiber is obtained. The modified polypropylene fiber obtained with the method has the good conductivity, thermal conductivity, fire resistance and mechanical property, and can be applied to spinning.
Owner:福建省银河服饰有限公司
Coloring master batches for polyethylene and preparation method thereof
The invention discloses coloring master batches for polyethylene and a preparation method thereof. The coloring master batches for polyethylene disclosed by the invention comprise the following components in percentage by mass: 70%-90% of pigment, 10%-20% of polyethylene resin, 3%-5% of dispersant, 0.1%-1% of antioxidant and 0.1%-1% of antistatic agent. Compared with the prior art, the coloring master batches for polyethylene have the beneficial effects that the prepared coloring master batches for polyethylene are applied to coloring of polyethylene products, have the characteristics of good dispersibility, uniform coloring, high concentration, little dosage and no influence on the mechanical property of the polyethylene products, and are low in cost, easy to color, convenient to use and capable of saving production time and raw materials and the like.
Owner:QINGDAO SANLI ZHONGDEMEI WATER EQUIP
Phosphorus-containing flame retardant system polyester after-treatment and preparation and application thereof
Owner:DONGHUA UNIV
Electrostatic prevented corrugated paper plate coating and preparation method thereof
The invention discloses antistatic corrugated board paint and a preparation method thereof. The antistatic corrugated board paint is characterized in that a conductive filler is positioned in a dry box and is dried to constant weight; a coupling agent is sprayed on the conductive filler, is sequentially added with film-forming resin, a mixed solvent and a dispersant and is evenly stirred to form a primary mixture; and the viscosity of the primary mixture after ball milling is regulated through a diluent for the ball milling of the primary mixture so as to obtain the antistatic corrugated board paint. The antistatic corrugated board paint has a more compact conductive structure to form a good interbedded communication structure and has a smoother conductive passage, thereby reducing the resistivity of the paint; the paint conducts through a few conduction mechanisms of a seepage theory, tunnel effect, a field emission theory and a thermodynamics theory; according to different proportioning proposals, the resistivity of the surface of the paint can be adjusted; the method has a simple and feasible process, convenient construction and lower cost, can improve production efficiency and does not generate influence on the prior performances of paperboard, such as mechanical performance and obstruction performance.
Owner:JIANGNAN UNIV
Chemical cleaning agent for superheater heat exchange pipe of station boiler
The invention relates to a chemical cleaning agent of a superheater heat exchange pipe of a station boiler, which comprises the components by mass percent: 1.0-50.0% of MAC, 0.1-0.5wt% of corrosion inhibitor, 0.05-1.5wt% of reducing agent, 0.05-0.2wt% of surfactant and de-mineralized water, wherein the MAC is a key component, and the other components are auxiliary components. The process condition is to control pH at 1.0-7.0. The cleaning formula has an excellent dissolving and dispersing effect on scale of various superheater heat exchange pipes, and simultaneously can control the material corrosion within a safety range and standard set value. The chemical cleaning agent is suitable for chemical cleaning of superheater heat exchange pipes of various station boilers, boilers and other equipment.
Owner:XIAN THERMAL POWER RES INST CO LTD
Cemented carbide extrusion molding adhesive and preparation thereof
InactiveCN101372556ADegreasing good shape retentionImprove the shortcomings of difficult degreasing and long degreasing timeParaffin waxAdhesive
The invention relates to a binder, in particular to a binder for extrusion molding of a hard alloy and a preparation method thereof. The binder is made from the following components by weight percentage: 65-80% of paraffin wax, 10-20% of styrene butadiene rubber, 3-5% of dibutyl phthalate, 3-5% of rapeseed oil, 3-5% of stearic acid, and the rest of organic solvents. The preparation method is as follows: the styrene butadiene rubber is dissolved into the organic solvents at normal temperature to prepare a rubber solution for spare use; the paraffin wax is added to a blender and heated to the temperature of 65-75 DEG C for melting, and then added with the dibutyl phthalate, the rapeseed oil, the stearic acid and the rubber solution and stirred for 2-5min to obtain the binder. The binder has the advantages of available and cheap raw materials, simple preparation process, good degreasing and shape retention properties, short degreasing time, improving the production efficiency and saving the production cost.
Owner:JINAN INSTITUTE OF METALLURGICAL SCIENCE CO LTD
Modified polyester fiber and preparation method
ActiveCN109943902AGood dispersionImprove conductivityElectroconductive/antistatic filament manufactureFlame-proof filament manufactureChemical reactionClick chemistry
The invention relates to the field of polyester fiber modification, in particular to modified polyester fiber and a preparation method. Graphene oxide reacts with a vinyl-containing silane coupling agent, a vinyl modified graphene oxide is obtained and then subjected to a thiol-ene clock chemical reaction with octo(3-mercaptopropyl)POSS, then, the product reacts with allyl alcohol and then is reduced to obtain a hydroxyl modified POSS / graphene composite material, the material and epsilon-caprolactone are subjected to a loop opening reaction in a catalyst, and polyester / graphene / cage type polysilsesquioxane particles are obtained. The polyester / graphene / cage type polysilsesquioxane particles and polyester slices are subjected to fusion spinning to obtain modified polyester fiber. The obtained modified polyester fiber has the good electricity conductivity, heat conductivity, flame resistance and mechanical performance, and can be applied to spinning.
Owner:福建省银河服饰有限公司
Quaternary ammonium cation and quaternary phosphonium cation-containing modified clay, its preparation and application
ActiveCN102816461AGood stabilityGood weather resistanceCoatingsInorganic compound additionQuaternary ammonium surfactantWeather resistance
Belonging to the field of organic-inorganic hybrid materials, the invention provides a quaternary ammonium cation and quaternary phosphonium cation-containing organic cation modified clay, its preparation method and application. The preparation method comprises: reacting a suspending solution of a sodium base treated clay mineral with quaternary ammonium cations and quaternary phosphonium cations, conducting filtering, washing, drying and crushing, thus obtaining the quaternary ammonium cation and quaternary phosphonium cation-containing organic cation modified clay with a synergistic effect. The organic cation modified clay provided in the invention has good stability, excellent weather resistance, and no toxicity. The organic cation modified clay contains quaternary ammonium cation modified clay and quaternary phosphonium cation modified clay simultaneously, and shows a synergistic antibacterial activity, so that it can be applied to plastics, rubber, fibers, coatings, adhesives, paper, wood-plastic composite materials and a variety of polymer materials to improve the antibacterial property, the flame retardance and the barrier property of polymers, and has no influence on the mechanical properties of the polymers.
Owner:JINAN UNIVERSITY
Preparation method of colored polyethylene fiber with ultrahigh relative molecular mass
ActiveCN103590128ASimplify the manufacturing processReduce manufacturing costDyeing processMonocomponent polyolefin artificial filamentSolventChemistry
The invention relates to a preparation method of a colored polyethylene fiber with ultrahigh relative molecular mass. The preparation method comprises the following steps: mixing dye or pigment powder with a solvent and stirring, while carrying out ultrasonic vibration to obtain uniform dyed bath liquid; (2) extracting and drying UHMWPE (Ultrahigh Molecular Weight Polyethylene) jelly fiber, and winding the fiber to obtain dried UHMWPE jelly fiber; (3) placing the dried UHMWPE jelly fiber to the dyed bath liquid which is obtained in the step (1) to carry out ultrasonic vibration for 10-50 min, taking out and drying the fiber to obtain colored dried UHMWPE jelly fiber; (4) carrying out multistage thermal stretch and winding the colored dried UHMWPE jelly fiber to obtain the colored UHMWPE fiber. The technical process is simple, low in production cost, easy to realize industrial production, wide in selection of dye or pigment powder, will not influence the original excellent mechanical property of the UHMWPE fiber, and is suitable for the fields with the color requirement such as civil use, military use and national defense.
Owner:DONGHUA UNIV
A VOC extractant used for modified polypropylene, and a preparing method and applications thereof
A VOC extractant used for modified polypropylene, and a preparing method and applications thereof are disclosed. The VOC extractant includes 11-50 wt% of a polypropylene carrier and 50-89 wt% of a non-fluorine type nonionic surfactant solution. The non-fluorine type nonionic surfactant solution includes 0.1-2.5 wt% of a non-fluorine type nonionic surfactant and 97.5-99.9 wt% of a solvent. The VOCextractant has characteristics of capabilities of being safe, environmentally friendly, cheap, and the like, and has an extremely high removal rate for VOCs in a modified polypropylene material. In aprocess of preparing the environmentally friendly modified polypropylene material, the VOC extractant is mixed with polypropylene and an auxiliary agent, the mixture is fully stirred by an efficient material mixer, and then the mixture is subjected to twin-screw extrusion and granulation to obtain the environmentally friendly modified polypropylene material.
Owner:WUHAN JINFA TECH CO LTD +1
Nano micropore structure capable of storing and releasing various kinds of medicament for medicament eluting instrument and preparation method
ActiveCN101474455AReduce the risk of long-term thrombosisNo effect on mechanical propertiesStentsSurgerySurgical operationAlfaxalone
The invention relates to a nanometer medicinal elution apparatus in microcellular structure for storing and releasing multiple medicines and a preparation method thereof. The multiple medicines in the invention are selected from medicine therapeutic agents, carrier therapeutic genes and bioactive substances, wherein one or two of the medicine therapeutic agents is / are taxol and / or probucol. The preparation method of the medicinal elution apparatus in the invention mainly comprises the followings: 1) nanometer holes are prepared on the surface of the apparatus body; 2) multiple medicines are coated in the nanometer holes and on the surface of the apparatus body. The apparatus body in the invention does not contain polymers, thereby reducing the risk of long-term thrombus possibly caused by polymers; the nanometer holes on the surface of the apparatus body do not have any influence for mechanical property of the body, thereby being capable of efficiently controlling the releasing rate of medicines and obviously reducing the restenosis rate after surgical operations. The invention can be applied to various medicinal elution implanting apparatuses, particularly having good effects for curing vascular lesion and preventing blood vessel restenosis in vascular stents.
Owner:BEIJING TARGET TECH
High-light-transmittance optical transparent adhesive for pasting touch screen and synthesis method thereof
ActiveCN109627996AEasy to useHigh refractive indexAmide/imide polymer adhesivesEster polymer adhesivesSynthesis methodsRefractive index
The invention discloses a high-light-transmittance optical transparent adhesive for pasting a touch screen and a synthesis method thereof. The raw material formula of the high-light-transmittance optical transparent adhesive comprises, by weight, the following components: 30-50 parts of (meth) alkyl acrylate, 25-40 parts of (meth) hydroxyalkyl acrylate, 1-3 parts of a N-atom-containing polar monomer, 10-20 parts of a crosslinking agent, 0.01-0.02 part of a chain transfer agent and 0.5-1 part of a thermal initiator. The high-light-transmittance optical transparent adhesive is in a pressure-sensitive state after being cured by heat, has the advantages of moderate initial adhesive force, excellent adhesive holding force, no displacement after pasting, and difficulty in falling off, the lighttransmittance is more than 99.5%, the haze value is less than 0.1%, the refractive index is close to a glass refractive index 1.49, and the synthesis method is environment-friendly.
Owner:SOUTH CHINA UNIV OF TECH
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