108results about How to "Conditions are easy to achieve" patented technology

The invention relates to a method for producing environment-friendly rubber filling oil, which comprises the following steps: performing extraction through back flow and sufficient contact in an extraction tower by using the specific gravity difference of raw oil and a solvent; dissolving polycyclic aromatic hydrocarbon in the raw oil into the solvent, and depositing the polycyclic aromatic hydrocarbon to the bottom area of the tower automatically; raising the raw oil after the extraction to the top of the tower automatically; performing solvent recovery through a steam stripping process; and removing the carried solvent to obtain the environment-friendly rubber filling oil. The method has the advantages that the environmental protection of an oil product meets European Union requirements, the oil product has good compatibility with rubber, and the adopted solvent recovery process has the advantages of high solvent recovery rate, easily achieved conditions and the like.

The invention discloses a magneto-calorific system, comprising a heat energy collecting device used for collecting heat energy, a heat energy transmission device used for transmitting heat energy, a magneto-calorific machine set used for converting heat energy into mechanical energy and outputting the mechanical energy, and a heat dissipating system used for exhausting residual heat; the heat energy collecting device and the magneto-calorific machine set are connected through the heat energy transmission device, and the magneto-calorific machine set and the heat dissipating system are connected through the heat energy transmission device; and the magneto-calorific machine set comprises at least one magneto-calorific machine unit used for converting heat energy into mechanical energy, and a power shaft connected with the magneto-calorific machine unit, and the magneto-calorific machine unit drives the power shaft to rotate. The magneto-calorific system is operated in the medium and low temperature region, is low in cost, simple to manufacture, long in service life and is suitable for large-scale construction and production.

The invention relates to a method for preparing nano molybdenum carbide (Mo2C) flake powder with a regular-hexagon structure. According to the method, water-soluble ammonium dimolybdate (or ammonium heptamolybdate) and glucose (or saccharose) are respectively adopted as a molybdenum source raw material and a carbon source raw material; and through precursor solution drying, molecular-level uniform mixing of all elements in a reactant system is realized, the temperature for carbothermal reduction reaction is lowered, the reaction time for the carbothermal reduction reaction is shortened, and the synthesis of nano Mo2C is realized. In addition, during the reaction, a molten halogenating agent provides a uniformly-heated stable-state system for a reaction system, so that the homogeneous growth of regular-hexagonal nano flaky Mo2C is promoted.

The invention relates to an antistatic coating and discloses a washing-resistant antistatic coating. The antistatic coating comprises the following components by weight percent: 15-25% of film former, 2-5% of conductive fillers, 0.5-1% of dispersing agents, 0.5-1% of coupling agents, 0.2-0.5% of defoaming agents, 0.3-0.6% of levelling agents, 0.5-1% of anti-settling agents and the balance of solvents. The preparation method can be implemented to prepare the antistatic coating which is efficient, has low toxicity and strong adhesion, is resistant to washing with water and organic solvents and is convenient to use, prepare and process; the components of the antistatic coating are the raw materials which are easily available, so the cost of the prepared antistatic coating can be effectively lowered; and the preparation method is carried out under normal temperature and pressure, the conditions required by the preparation process are easy to reach, the preparation flow is simple and the operability is strong.

The invention discloses a carbon brush of a motor of a drum washing machine. The carbon brush of the motor is characterized by comprising, by weight, from 80% to 90% of graphite powder, from 7% to 15% of asphalt and from 2% to 5% of tungsten powder. A method for manufacturing the carbon brush of the motor of the drum washing machine includes steps of adding the graphite powder, the asphalt and the tungsten powder into a mixer according to the respective weight percentages, and sufficiently mixing the graphite powder, the asphalt and the tungsten powder; feeding a mixture into a grinder after the graphite powder, the asphalt and the tungsten powder are sufficiently mixed to obtain the mixture, grinding the mixture, and sieving powder obtained after the mixture is ground; performing compression moulding for the powder; sintering; cutting and grinding surfaces after sintering is completed; coating solid glue on two surfaces of a crude product of the carbon brush of the motor after the surface grinding is completed to obtain the crude product; and then punching, embedding wires and grinding arcs to obtain a finished product. The grain size of screen cloth is 100 meshes. The carbon brush and the method have the advantages that a process is simple, conditions are easy to realize, the carbon brush obtained by the method is low in breakage rate and long in service life, loss can be effectively reduced, and the production cost can be effectively saved.

The invention discloses an etching method for a mask layer. The mask layer at least comprises a middle mask layer and an organic matter mask layer; the mask layer is etched with a plasma dry process; and in an etching process, a plasma radiofrequency excitation voltage is applied to generate plasma. The etching of the mask layer comprises the following steps of: forming a patterned middle mask layer by taking a patterned photoresist layer as a middle mask layer below mask etching; and applying a pulse bias radiofrequency voltage, and forming a patterned organic matter mask layer by taking the patterned middle mask layer as an organic matter mask layer below mask etching, wherein the frequency of the plasma radiofrequency excitation voltage is higher than that of the pulse bias radiofrequency voltage. The invention further provides an etching device for the mask layer and an etching method for an interlayer dielectric layer. Due to the adoption of the technical scheme provided by the invention, an implementation condition is simple and cost is low.

The invention discloses a rate gyroscope calibrating method which is used for solving the technical problem of complicated error calibration process of an existing rate gyroscope. According to the technical scheme, a carrier respectively rotates around an X axis, a Y axis and a Z axis and a rotation angle rate of the carrier is calculated according to output data change of a magnetic sensor so as to be used as a reference angle rate of calibrating a rate gyroscope, and a scale factor and a zero offset error of each axis of the rate gyroscope are respectively calibrated. According to the rate gyroscope calibrating method, a rate rotary table is not needed, realizing conditions are simple and online rapid calibration is facilitated. Through testing, the static precision of the gyroscope can drift within 2.5 DEG for 10min, and when an input angle rate is less than 25 DEG / s under a dynamic condition, errors of three axes can be kept to be within + / -2 DEG.

The invention discloses a nucleic acid extraction kit comprising a nucleic acid binding solution and a magnetic adsorbent. The nucleic acid binding solution comprises polyethylene glycol and sodium chloride, and the magnetic adsorbent is magnetic Fe3O4 nano particles with the surfaces covered with polydopamine coatings. The magnetic adsorbent provided by the invention has the superparamagetic nanoparticles, the polydopamine coatings on the surfaces of the nano particles are rich in amino groups and hydroxyl groups, under the salt solution environment provided by the nucleic acid binding solution, nucleic acids can be efficiently adsorbed, the nucleic acid adsorbing efficiency and quality of the existing magnetic nano particles are improved, and the nucleic acids can be extracted efficiently and rapidly; and when the nucleic acid extraction kit is applied to extraction of human whole blood, blood treatment is not needed, and the nucleic acid extraction kit is suitable for gene diagnosis and treatment of clinical diseases. The nucleic acid extraction method provided by the invention uses the nucleic acid extraction kit, the quality and efficiency of extracting of the nucleic acids are improved, and the nucleic acid extraction method is suitable for application and promotion of clinical diagnosis and basic scientific research.

The invention provides a preparation method of environment-friendly rubber tire filling oil, belongs to the technical field of petrochemical engineering, and particularly relates to a method for manufacturing the rubber tire filling oil by using coking gas oil. The preparation method comprises the following steps of: fractionating by taking the coking gas oil as raw oil; then carrying out raw material hydrogenation pre-refining, hydrogenation modification, and hydrogenation post-refining three-stage one-section serial hydrogenation contact reaction under the conditions that a hydrogen partial pressure is 15-18 MPa, the reaction temperature is 350-390 DEG C, the liquid air speed is 0.7-1.0 per hour and the hydrogen / oil volume ratio is 500-700; and finally, fractionating to obtain a three-section product. The preparation method utilizes a secondary-machine poor-quality coking gas oil petroleum fraction as a raw material to expand a new raw material source for the raw materials. The product has good compatibility with rubber; the utilization rate of three raw materials is high; and the conditions are easy to realize.

The invention belongs to the field of environmental protection and particularly relates to a modified preparation method for a corn straw capable of adsorbing arsenic in water. Middle nodules of the air-dried corn straw are removed, the corn straw is cut into short sticks, the short sticks are washed and dried to reach constant weight, the hard barks on the surfaces are removed, the short sticks are cut into straw particles, the straw particles are soaked in isopropyl alcohol for 8-10 hours, washed with deionized water and dried, then the processed straw particles are soaked in a NaOH solution with the concentration of 0.8-1.2mol / L for 6-8 hours, washed with deionized water and dried, then the processed straw particles are soaked in oxalic acid with the concentration of 0.18-0.22mol / L, washed with deionized water, and dried, so as to finally obtain a modified corn straw adsorbent, wherein the maximum saturated adsorption is up to 94[mu]gAs(III) / g (straw). The materials are easy to get, the cost is low, the toxicity is low, the modified method is simple in operation steps, the conditions are easy to achieve, high temperature or high pressure is not needed, the method is easy to realize, and the arsenic adsorption effect of the modified corn straw is good.

The invention discloses a method for increasing the leaching rate of polyphenols in dendrobium officinale kimura et migo. The method comprises the steps of pre-treatment, extraction and post-treatment, and specifically comprises the following steps of cleaning and air-drying raw materials fresh dendrobium officinale kimura et migo twigs, drying the dendrobium officinale kimura et migo twigs for 3.0 to 3.5h at 95 to 100 DEG C until the water content is 15 to 30 percent, and cutting the dendrobium officinale kimura et migo twigs into 3.0 to 4.0cm short twigs a; performing expansion wall breaking and crushing on the short twigs a, sieving the crushed short twigs a to obtain dendrobium officinale kimura et migo extract prepared material b by virtue of a 100 to 300-mesh sieve, adding an alcohol solvent in an amount which is 4 to 8 times the weight of the dendrobium officinale kimura et migo extract prepared material b, performing extraction 3 to 4 times at 60 to 80 DEG C for 1 to 3h every time, mixing extracting solutions, and performing filtration and concentration to obtain extract c with relative density of 1.1 to 1.3; drying, crushing and sieving the extract c to obtain a target extract. The method is less in production equipment investment, a process is easy to operate, conditions are easily reached, a preparation process is low in energy consumption and cost, convenience in processing is achieved, and adopted reagents are nontoxic, harmless, safe and environment-friendly; the polyphenols in a prepared dendrobium officinale kimura et migo product can be easily leached, and the leaching rate of the polyphenols in the dendrobium officinale kimura et migo is increased.

The invention relates to a passion fruit planting method which comprises the following steps: A, digging fixed planting furrows in a place with a water source, loosened and fertile soil and good water drainage; B, erecting a passion fruit shed frame; C, planting passion fruit seedlings; D, performing daily maintenance on passion fruit, irrigating the passion fruit, and applying earthworm faeces to parts around roots of the passion fruit every 9-19 days so as to fertilizer the passion fruit; and F, pinching off buds of main stems of the passion fruit, and trimming old twigs of the passion fruit every year. The passion fruit planting method is good in applicability, convenient in field operation, easy in condition meeting and high in planting efficiency; the fruit setting rate of the passion fruit can be greatly increased, the yield of the passion fruit can be increased, the passion fruit can be interplanted with other vegetables if the planting times of one vegetable and the passion fruit are reasonably arranged, and as various organic fertilizers are applied when the vegetable is planted, no more fertilizer is needed for planting, and the cost can be reduced; the passion fruit and the vegetable can grow together without being influenced by each other; a greenhouse protection land can be sufficiently utilized, and thus the economic benefits can be increased.

The invention particularly relates to an indium sulfide photocatalyst with hierarchical structures and a preparation method thereof. The cubic-phase beta-In2S3 catalytic material can be prepared by a simple hydrothermal method and adopting polystyrene sodium sulfonate (PSS) as a special surfactant. Experimental conditions are easy to reach, no acid or base needs to be added to adjust the pH of the reaction solution so that the environmental pollution is reduced; the synthesized material is small in size and uniform in particle size which is between 100nm and 200nm and the specific surface area between 70m<2> / g and 82m<2> / g and the adsorption of pollutants molecules during the catalytic reaction is facilitated; by regulating and controlling the structure of PSS, the In2S3 material has the special hierarchical structures formed by assembling nanosheets; due to the morphologic characteristic, the In2S3 material has larger specific surface area and more active sites are generated; by the staggered nanosheets, light can be reflected for many times among the structures of the catalyst and thus the utilization rate of light is increased; and when 2,4-dichlorophenol is subjected to photocatalytic degradation for 80 minutes by the nanomaterial, the degradation rate can reach 91%.

The invention discloses a process for extracting polysaccharide from milkvetch roots. The process is characterized by including the following steps of step a, using a dry milkvetch root powder as a raw material, placing the dry milkvetch root powder in a reaction vessel, and adding a mixed solvent to the reaction vessel; step b, heating a solution obtained after the mixing reaction in the step a, and adding a multienzyme complex to the mixed solution, wherein the multienzyme complex comprises cellulose and pectinase with the weight ratio of 1:1; step c, cooling the mixed solution obtained after enzymolysis reaction, and removing lower layer precipitates after the cooling to obtain supernatant; step d, concentrating the supernatant obtained from the step c to be paste, adding ethanol for precipitation, and performing filtering to obtain a milkvetch root polysaccharide crude product; and step e, refining the milkvetch root polysaccharide crude product to obtain a milkvetch root polysaccharide refined product. The process for extracting the polysaccharide from the milkvetch roots has the advantages of being simple in operation, conditions are easy to achieve, the yield rate of the polysaccharide is high, and the purity is high.

The invention discloses a method for extracting scandium from scandium-containing iron-rich acid liquor through P507. The method comprises a step of extracting to remove iron and a step of extracting to gain scandium. The method specifically comprises the following steps of: firstly, extracting through an N235-containing organic phase to remove the iron from the scandium-containing iron-rich acid liquor, wherein the extraction rate is up to more than 99.5%, and the loss ratio of scandium is less than 0.5%; and secondly, extracting the scandium through a P507-contianing organic phase. According to the method, the scandium-containing iron-rich acid liquor contains 5 to 50mg / L of scandium based content, 5 to 45g / L of iron based on content, and 1 to 5.5mol / L of H<+> based on concentration; and the extracting rate of the scandium is up to 99%. The method disclosed by the invention is a novel method which is low in cost and high in scandium recovery rate, can meet the demand of industrial production, and has a wide prospect.

The invention relates to a Rayleigh scattering PMMA plate, which comprises a transparent polymethyl methacrylate matrix and nano oxide particles uniformly distributed in the transparent polymethyl methacrylate matrix, and the diameter of the nano oxide particles is 5-100 nm. According to the Rayleigh scattering PMMA plate provided by the invention, when a light source passes through the prepared PMMA plate, Rayleigh scattering is formed, so that the effects of diffusing blue sky and simulating sunlight are realized; the preparation method of the Rayleigh scattering PMMA plate is simple in process, conditions are easy to realize, the Rayleigh scattering PMMA plate is convenient to efficiently prepare, and the application value is high.

The invention relates to a method for preparing aromatic hydrocarbon and derivative compound thereof, especially a preparation method of 5-chlorosulfonyl isophthaloyl acid chloride. The method in the invention comprises: using sodium 3,5-dicarboxybenzene sulfonic acid and phosphorus pentachloride in ratio of 1:3-6 to perform chlorination reaction; washing by after reaction; extracting by ether; distilling and drying to obtain a transparent colorless oily liquid, cooling into a white crystal which is the object product. The advantages of the invention is that: the product yield and purity are high, the chlorination agent amount is low, the operation is easy; the condition is easy to obtained, the reaction is easily controlled, and the environmental pollution is reduced.

The invention discloses a quenching agent, belonging to the field of heat treatment of metals. The quenching agent comprises the following components in parts by weight: 15-20 parts of polyoxyethylene ether, 5-8 parts of triisopropanolamine, 3-7 parts of polyvinyl acetate, 1-4 parts of sodium benzoate, 0.5-2 parts of a defoaming agent and 70-80 parts of water. By applying the quenching agent to the heat treatment of the metals, the high-temperature cooling speed can be effectively increased, the high-temperature cooling time can be prolonged, and the cracking of workpieces can be prevented; furthermore, the quenching agent is safe and environmental friendly in use, extremely low in environmental pollution and cost, and easy to industrially produce.

The invention mainly provides a production method of environmental protection biologic rubber tire filling oil, which uses the technologies of hydrogenation, extraction, fractionation in a combination way and provides a new idea for preparing the rubber filling oil by using mineral oil and vegetable oil together as raw material oil. A conventional device in traditional processing industry can be used. The production method has mature technology, simple production process and lower cost. The produced environmental protection rubber filling oil not only enables the environmental protection performance of an oil product to achieve European Union requirements, but also has good compatibility with rubber, and various main indicators all meet the quality indicator requirement of environmental protection tire oil.

The invention relates to the field of biological information, in particular to the function of a surfactant, and a signal amplification method for SPR (Surface Plasma Resonance) detection on low molecular weight substances. According to the method, molecules with smaller relative molecular mass are aggregated into micelles through the surfactant to form macromolecules, and the macromolecules react with enzymes, the sensitivity is very high, and the reaction speed is very fast, so that the method is suitable for quick and sensitive detection; compared with other signal amplification methods, the signal amplification method provided by the invention is on the basis of the principle that the micelles can be formed by aggregating through the surfactant, simple and convenient to operate, and high in experimental repeatability.

The invention discloses a preparation method of a graphite crucible, which is characterized by comprising the following steps: a, adding 40-50wt% of natural graphite, 9-15wt% of metallic silicon and 30-40wt% of petroleum coke particle into a container, stirring, and then adding 8-15wt% of phenol formaldehyde resin into the container; b, further stirring, and molding with a compression molding machine; c, roasting the molded crucible green body, and controlling the roasting time at 10-20 hours to obtain a roasted crucible; d, drying the roasted crucible for 20-40 hours, and controlling the drying temperature at 100-200 DEG C; and e, preparing an SiC inner layer on the surface of the roasted crucible in the step d through a CVD (chemical vapor deposition) method, and densifying the SiC inner layer. The invention has the following advantages: the technological conditions are simple; the conditions are easy to implement; and the graphite crucible manufactured by the method has high product qualification rate, low resource waste rate and obvious energy saving effect.

The invention discloses an improved fruit and vegetable sterilization preservative comprising the following components in percent by weight: 10-30% of chitosan, 20-30% of activated aluminium oxide, 5-8% of citric acid, 0.5-1% of acrylate, 5-20% of sulphite and balance of water. The preparation method of the improved fruit and vegetable sterilization preservative comprises the following steps of: a, mixing 10-30 parts by weight of chitosan, 20-30 parts by weight of active alumina oxide and 30-60 parts by weight of water, blending, and centrifuging to obtain supernate; b, adding 5-8 parts by weight of citric acid and 0.5-1 part by weight of acrylate into the supernate obtained by the step a, and controlling the temperature at 60-80 DEG C; c, washing a mixed solution obtained by the step b; and d, after cooling is carried out, adding 5-20 parts by weight of sulphite into the mixed solution obtained by the step c, stirring, and standing to obtain the improved fruit and vegetable sterilization preservative. The invention has the advantages that the sterilization preservative is safe, non-toxic and pollution-free and the preparation method of the sterilization preservative is simple.

The invention relates to the field of flame-retarding products, in particular to a flame retardant, polyester, a flame-retarding epoxy resin cured material and a preparation method thereof. The flame retardant obtains high flame retardancy under the synergistic action of nitrogen and phosphorus, and the strength of epoxy resin is enhanced through amino and hydroxyl in a molecule. The flame-retarding epoxy resin cured material is high in flame retardancy and relatively high in mechanical property.

The invention discloses a fruit preservative, which is characterized in that the fruit preservative is prepared by using the following components in percent by weight in an even mixing way: 1-2 percent of calcium peroxide, 10-30 percent of konjak refined flour, 0.4-1.0 percent of sodium hydrogen carbonate, 0.03-0.15 percent of citric acid and 80-95 percent of water. The preparation method of the fruit preservative comprises the following steps of: at normal temperature, adding 1-2 parts of calcium peroxide by weight, 10-30 parts of konjak refined flour by mass and 0.003-0.15 part of citric acid by mass into a reaction kettle; feeding steam into the reaction kettle and starting up for agitation; increasing the internal temperature of the reaction kettle to 85-95DEG C, adding 0.4-1 part of sodium hydrogen carbonate by mass into the reaction kettle, agitating the mixture for 40-60 minutes and adding 80-95 parts of water by mass; and stopping heading, continuously agitating the mixture, decreasing the temperature to 30-40DEG C and discharging the mixture. The fruit preservative ahs the advantages that the materials are easy to obtain and the cost is low; and the preparation method of the fruit preservative has the advantages that the method is simple to operate, the conditions are easy to realize and the used raw materials do no harm to human bodies.

The invention discloses a waterborne polyurethane emulsion with high stretch intensity and a preparation method thereof, and belongs to the technical field of paint. The waterborne polyurethane emulsion is prepared from the following raw materials in parts by weight: 30 to 90 parts of polyether polyol, 20 to 60 parts of polyisocyanate monomers, 3 to 13 parts of hydrophilic chain-extending agents,2 to 7 parts of salt-forming agents and 2 to 5 parts of quadrol. The invention also discloses a preparation method of the waterborne polyurethane emulsion with high stretch intensity. The method has the advantages that the polyether polyol, polyisocyanate monomers and hydrophilic chain-extending agents are gradually polymerized according to a certain proportion; under the chain expansion effect ofamine chain extenders, the anionic waterborne polyurethane emulsion is synthesized by a self-emulsification method. After the coating deformation film forming by the waterborne polyurethane emulsionwith high stretch intensity, the fracture intensity is higher than or equal to 45 MPa; the stretch resistance performance is good.

The invention relates to the field of biological information, in particular to the function of a surfactant, and a signal amplification method for SPR (Surface Plasma Resonance) detection on low molecular weight substances. According to the method, molecules with smaller relative molecular mass are aggregated into micelles through the surfactant to form macromolecules, and the macromolecules react with enzymes, the sensitivity is very high, and the reaction speed is very fast, so that the method is suitable for quick and sensitive detection; compared with other signal amplification methods, the signal amplification method provided by the invention is based on the principle that the micelles can be aggregated through the surfactant, simple and convenient to operate, and high in environmental repeatability.

The invention discloses a 360-degree holographic real-time interaction device which can solve the problem that the conventional holographic devices are limited in content, and cannot perform interaction operations. The 360-degree holographic real-time interaction device includes a real-time information acquisition device, a real-time information processing device, and a real-time information reproduction device; a signal acquired by the real-time information acquisition device is processed by the real-time information processing device, and then is sent to the real-time information reproduction device so as to achieve reproduction of a holographic image. Through the real-time information acquisition device, the real-time information processing device and the real-time information reproduction device, information such as user information and scene information can be acquired in real time, the acquired information can be processed in real time, and finally, the holographic real-time reproduction device performs holographic image reproduction and interaction.

The invention relates to a visual detection method. Visual detection is performed by converting indicating substances of traditional target molecules into catalysts such as nano-particles or enzymes capable of achieving catalysis for gas generation, and then using the catalysts at the positions of the target molecules to catalyze substrates to generate gas. By the aid of the method, detection sensitivity can be greatly improved, and even single molecule detection can be achieved. Generated bubbles are regarded as visual signals to be read, and accordingly the method is high in speed, easy to detect and extremely high in sensitivity and facilitates reading of results, and equipment for analysis is greatly simplified. The technology high in throughput and sensitivity and capable of achieving real-time detection can be obtained. The method high in adaptability is applicable to clinical and common laboratories and even can be used for field detection.

Extraction of zedoary alcohol is carried out by vacuum split-flowing for zedoary oil, flowing out solid-liquid mixture at some vacuum degree and temperature, collecting the fraction, re-crystallizing for the filtered solid from organic solvent or mixed solvent, and obtaining colorless needle crystal zedoary alcohol. Its advantages include simple process, higher recovery rate and purity.

A full-degree-of-spatial-freedom metamorphic mechanism type palletizing robot mechanism comprises a platform, a planar locating mechanism, a spatial driving mechanism and a manipulator assembly, wherein a first controllable motor and a second controllable motor are fixedly mounted on the platform; a platform fixing rod is fixed on the platform to realize assembly of the planar locating mechanism and the platform; a chute is fixed on the platform to realize assembly of the spatial driving mechanism and the platform; a horizontal output fixing rod is horizontally fixed on a vertical rod to realize assembly of the spatial driving mechanism and the planar locating mechanism; and a horizontal rotary slider sleeves a horizontal output slide rod to realize assembly of the manipulator assembly andthe spatial driving mechanism. The full-degree-of-spatial-freedom metamorphic mechanism type palletizing robot mechanism is simple in structure and convenient to machine, manufacture and mount, can realize full-degree-of-spatial-freedom location according to functional demands or environmental changes, and can deal with different work tasks under different working occasions.