26results about How to "Good low temperature stability" patented technology

The invention relates to the technical field of organic silicon toughening agents, in particular to a long-chain alkyl modified organic silicon toughening agent and a preparation method thereof.The long-chain alkyl modified organic silicon toughening agent is prepared through sulfydryl double-bond reaction of vinyl silicone oil and long-chain alkyl mercaptan, organic silicon hydrolysis is conducted under a certain temperature condition to synthesize silicon emulsion, long-chain alkyl is preliminarily obtained, and the long-chain alkyl modified organic silicon toughening agent is prepared. Then dropwise adding a first mixed emulsion obtained by mixing an acrylate soft monomer, octadecyl methacrylate, a functional monomer, an emulsifier and an initiator, dropwise adding a second mixed emulsion obtained by mixing an acrylate hard monomer, a functional monomer, an emulsifier and an initiator, and carrying out emulsion copolymerization reaction to obtain a long-chain alkyl group again to form an interpenetrating network system; compared with the prior art, the weather resistance and temperature stability of a polymer are improved, the molecular weight of the polymer is greatly improved, the polymer has good toughness, the toughening effect on a plastic material, especially the low-temperature toughening effect, is greatly improved, and the dosage of a toughening agent in an alloy material can be reduced.

The invention discloses a preparation method and application of low-sensitization high-nutrition pea protein egg custard liquid. The preparation method comprises the following steps: (1) extracting pea protein A from a pea variety A; extracting pea protein B from the pea variety B; uniformly mixing the pea protein A and the pea protein B to obtain the low-sensitization high-nutrition pea protein; (2) performing compound modification on the low-sensitization high-nutrition pea protein to obtain modified low-sensitization high-nutrition pea protein; and (3) mixing and emulsifying the modified low-sensitization high-nutrition pea protein, calcium chloride, edible vegetable oil, edible polysaccharide and water to obtain the low-sensitization high-nutrition pea protein egg custard liquid. The pea protein egg custard liquid prepared by the preparation method disclosed by the invention can be kept uniform and stable after being stored at low temperature for a long time, and can be used as an egg substitute in the food field; the pea protein egg custard is used for preparing the pea protein egg custard, the formed egg custard is uniform in tissue structure, and the structure and the taste of the egg custard can be simulated to a certain extent.

The utility model discloses an InAs / GaSb superlattice medium / long wave double-color infrared detector based on an nBn structure, which belongs to the technical field of optoelectronic devices and comprises a GaSb substrate, a non-doped GaSb buffer layer, a 14ML InAs / 7ML GaSb superlattice Si doped layer, a 14ML InAs / 7ML GaSb superlattice unintentional doped layer, a 4ML InAs / 7ML GaSb superlattice unintentional doped layer, a 8ML InAs / 6ML GaSb superlattice unintentional doped layer and a 8ML InAs / 6ML GaSb superlattice Si doped layer which are sequentially arranged from bottom to top. The medium / long wave absorption layers of 14ML InAs / 7ML GaSb superlattices and 8ML InAs / 6ML GaSb superlattices are combined, so that high absorption efficiency and low crosstalk of medium / long wave band response are realized, and low dark current and wide temperature range working capability are realized.

The application discloses oily gel microbeads, a preparation method thereof, skin care products and application. The oily gel microbeads comprise polar oil 60-93%, oil phase gel 5-30%, low freezing point oil 2.5-20% and semi-solid oil 0.1-5%, % is the mass percentage of each component in the total mass of the gel microbeads; the polar oil is one or more of glyceryl tri(ethylhexanoate), white pool seed oil, isononyl isononanoate, dicaprylyl carbonate, diethylhexyl carbonate, C12-15 alcohol benzoate, isopropyl myristate, ethylhexyl stearate, ethylhexyl palmitate, castor seed oil, wheat germ oil, sunflower seed oil, wild soybean oil and coconut oil; the freezing point of the low freezing point oil is lower than-65 DEG C. The oily gel microbeads prepared by the application have good low-temperature stability, are spherical in shape, have good uniformity, are easy to spread and absorb, have strong skin adhesion, and have strong moisturizing and repairing functions.

This application relates to the field of refrigeration systems, disclosing a refrigeration oil, a working fluid composition for refrigeration machines, and a refrigeration system. By adding a specific type of surfactant, this application significantly reduces the surface tension of the refrigeration oil, improves its compatibility with refrigerants such as hydrofluorocarbons, and reduces oil film formation or oil residue in the refrigeration system. The refrigeration oil described in this application has suitable viscosity and solubility viscosity, meeting the normal operating requirements of the compressor, while also effectively inhibiting the formation of oil film on the heat exchanger surface, thereby improving heat exchange efficiency. Furthermore, this refrigeration oil has good lubricity, low-temperature fluidity, and thermochemical stability, which can promote the circulation of the refrigeration oil in the refrigeration system pipeline, improve oil return efficiency, and extend the compressor's service life.

The invention relates to a grain fiber-PVC (polyvinyl chloride) composite foamed sheet with a surface co-extrusion layer and a preparation method of the grain fiber-PVC composite foamed sheet. Comprising a middle foaming layer and a surface co-extrusion layer, and the middle foaming layer and the surface co-extrusion layer both comprise PVC resin and rice hull powder. The rare earth composite stabilizer is added, so that the environment-friendly function is achieved, the rare earth stabilizer further has the coupling, reinforcing and brightening functions in the PVC material, and in addition, the rare earth composite stabilizer can further adjust the decomposition temperature of the foaming agent and achieve the effects of toughening and capacity increasing; the foaming agent is prepared by compounding an AC foaming agent and an NC foaming agent, so that the extrusion rate can be increased, meanwhile, the dimensional deviation of the product is reduced, and the surface hardness can reach about Shore D hardness 80; the weight ratio of the rare earth compound stabilizer to the foaming agent to the foaming regulator is (1-5): (0.5-1.6): (3-9). Plasticization in the processing process can be promoted, and meanwhile, the mechanical property of the material is improved.

The application relates to the field of lubricating oil, and more particularly to a novel wind power gear oil compound and a preparation method thereof. The novel wind power gear oil compound comprises, in mass parts, at least the following raw materials: a base agent 60-80 parts, an oily agent 1-8 parts, an antioxidant 3-6 parts, an anti-wear agent 3-8 parts and an improver 4-10 parts. The application provides a novel wind power gear oil compound which can be directly used as a wind power gear lubricating oil or used as an additive of other lubricating oil systems, can effectively enhance the extreme pressure resistance, corrosion and rust resistance, low-temperature flow and stability of the lubricating oil under the guarantee of excellent lubricating wear resistance and weather resistance and aging resistance of the lubricating oil, and meets the performance requirements of more complex wind power speed-up gear boxes.

This invention belongs to the field of environmentally friendly fuel technology, specifically relating to a method for preparing a green, low-carbon, and highly efficient modified fuel for alcohol-hydrogen engines. This invention comprehensively improves fuel performance through a progressive synergistic architecture of a bio-methanol platform – an oxygen-containing combustion-promoting system – a stability barrier – and a low-energy-consumption blending path. Using bio-methanol as a base, it optimizes combustion by compounding with oxygen-containing components such as 2-MTHF and DMM / MF, achieving rapid ignition, emission reduction, and noise reduction. Phase behavior is regulated by isobutanol and polyether-modified silicon, achieving a reversible and stable phase without the need for high-HLB surfactants, preventing deposition and gas lock. A four-fold protective barrier is constructed using GMO and fluorinated silica polyethers, combined with antioxidant synergy to achieve corrosion resistance and aging resistance. The process adopts a sequential design of front-end purification – mid-stage two-phase construction – and end-stage static mixing, achieving low-energy homogenization and ensuring storage, transportation, and operational stability.

The present application relates to the technical field of curing glue paint, in particular to a preparation method of water-based single-component plastic paint. The water-based single-component plastic paint prepared by the present application overcomes the problems of poor environmental protection and difficult balance of comprehensive performance of paint film. The water-based single-component plastic paint is prepared by optimizing the preparation method and raw material system; the alicyclic isocyanate is selected and step-by-step reaction is combined with ring-opening epoxy resin, quercetin and disulfide to form a dense coating, so as to improve corrosion resistance and adhesion; hydrolyzed KH560 and polyurethane-polyurea composite system are used to introduce fluorine-containing monomers, so as to enhance water resistance and low-temperature stability; a three-dimensional network is constructed by free radical copolymerization, triethylamine is added to inhibit polymerization, and the feeding and post-ripening steps are optimized to balance the hardness, drying speed and surface state after cooking. The water-based single-component plastic paint of the present application is suitable for various plastic substrates such as automobile interior and exterior trim and 3C products, and has significant advantages in protection performance and construction adaptability.

According to the light superconductive carbon fiber composite cable and the preparation method thereof provided by the invention, the problem of resistance loss caused by grain boundary scattering in a graphene cable is solved by combining a graphene grain boundary repairing technology of a metal state on the surface of a topological insulator. The preparation method comprises the following steps: directionally depositing Bi2Se3 nanosheets on a graphene crystal boundary by using argon current carrying under the condition of 450-550 DEG C through a chemical vapor deposition process to form a continuous conductive channel. According to the method, complex lattice matching is not needed, the strict requirement of double-layer graphene on the magic angle precision is avoided, and the process error-tolerant rate is high. The surface metal state of the topological insulator improves the conductivity of the graphene by 20%-30%, and meanwhile, a dissipation-free topological edge state is reserved. The technology is combined with the light superconductive carbon fiber composite cable, so that the conductivity and mechanical stability of the cable are remarkably improved, and the light superconductive carbon fiber composite cable has a wide application prospect.

The invention provides a high-molecular conductive agent and a preparation method and application thereof, and belongs to the technical field of fine chemical assistants. Heptamethyltrisiloxane is firstly used for graft modification of oil-based dimethyl tertiary amine, and then the high-molecular conductive agent is synthesized with compounded monochloroalkane and maleic anhydride. The polymer conductive agent prepared by the invention has excellent storage stability, is not easy to freeze in winter and has strong conductivity, and the conductivity of the polymer conductive agent in a coating film can be kept for a long time. The polymer conductive agent has good compatibility with various resins, does not influence the transparency of a paint film, has small influence on the performance of the paint film, and does not rust the tank.

The application discloses a method for refining and removing impurities from Chinese torreya seed kernels by gradient pressing, and at least comprises the following steps: S3, segment refining: pumping the mixed Chinese torreya crude oil obtained in step S2 into a refining system, and sequentially performing low-temperature step-by-step treatment in the following five stages: S3.1, enzymatic ultrasonic low-temperature degumming: adding water and a composite enzyme preparation into the mixed Chinese torreya crude oil, stirring to form a mixed emulsion, controlling the reaction temperature of the mixed emulsion to be 40-45 DEG C, applying ultrasonic cavitation treatment for 30-40 minutes, then centrifugally separating and removing gum to obtain degummed oil. The application adopts low-temperature step-by-step segment refining, and through five-step low-temperature step-by-step synergistic refining of degumming, deacidification, decolorization, deodorization and dewaxing, an integrated synergistic impurity removal system is formed: enzymatic ultrasonic degumming completely removes gum, provides low-impurity and high-quality oil phase raw materials for the subsequent deacidification section, reduces the interference of impurities on the mass transfer efficiency of microbubble stripping, and lays the foundation for synergistic impurity removal.

This invention relates to a hair-cleansing composition that uses a specific olefin sulfonic acid or its salt, which improves its performance when applied to hair and exhibits excellent low-temperature stability. Specifically, this invention relates to a hair-cleansing composition comprising the following components (A) to (C): (A) an olefin sulfonic acid or its salt having 16 carbon atoms, obtained by sulfonating a raw olefin having 16 carbon atoms with an average double bond position of 3.9 to 4.5; (B) an amphoteric surfactant; and (C) a nonionic surfactant, wherein the mass ratio of component (A) to component (B) is 1 to 50.

The invention relates to an elastomeric toothed belt comprising a fabric spanning the teeth of the toothed belt, wherein the elastomer mixture forming the teeth contains at least 70% by weight of crosslinked ethylene-propylene rubber (EPM) and / or crosslinked ethylene-propylene terpolymer rubber (EPDM) based on the proportion of polymers of the elastomer mixture, and wherein an intermediate layer is arranged between the fabric and the elastomer mixture forming the teeth, which intermediate layer contains at least 70% by weight of hydrogenated acrylonitrile-butadiene rubber (HNBR) based on the proportion of polymers of the intermediate layer. This elastomeric toothed belt is halogen-free and is characterized by improved durability and good low-temperature stabilization properties. The invention further relates to a method for producing these elastomeric toothed belts and the use of a hydrogenated acrylonitrile-butadiene rubber (HNBR) layer in these toothed belts to increase the service life, improve the low-temperature stabilization and improve the adhesion between the teeth and the fabric.

The application discloses a kind of quaternary ammonium salt cationic surfactants and its preparation method and application in defoaming glass water, it is related to surfactant technical field.The quaternary ammonium salt cationic surfactant is prepared by the following method: bis-trimethylsiloxy methyl silane is reacted with 4-vinyl phenyl glycidyl ether to generate intermediate 1;Heptaglycol monomethyl ether is reacted with intermediate 1 to generate intermediate 2;Dodecyl dimethyl tertiary amine is reacted with 3-bromo-2,2-bis(bromomethyl) propionic acid to generate quaternary ammonium salt compound;Intermediate 2 is reacted with quaternary ammonium salt compound to generate surfactant.The surfactant prepared in the application has lower surface tension and contact angle, and shows excellent low-temperature stability and detergency.

The present invention belongs to the technical field of polymer materials, and specifically relates to a starch-based waterborne polyurethane emulsion and its preparation method and application. The present invention mixes glycerol and polyethylene glycol, stirs and warms to 90-100°C, then adds starch, stirs and warms to 120-140°C, keeps warm and stirs for 1-2h, then adds methanesulfonic acid, stirs for 0.5-1h, cools to room temperature, and obtains starch-based polyols; isophorone diisocyanate, 2,2-dihydroxymethylbutyric acid, and solvent are mixed, stirred and warmed to 60-80°C, then a catalyst is added, stirred and reacted for 2-3h, then starch-based polyols are added, stirred and reacted for 2-3h, cooled to room temperature after the reaction ends, triethylamine is added, stirred and neutralized for 20-40min, then 3-aminopropyltriethoxysilane is added, stirred and reacted for 1-2h, then water is added, high-speed stirring and emulsification is performed for 1-2h, and the solvent is removed by rotary evaporation to obtain. The starch-based waterborne polyurethane emulsion of the present invention has good stability and mechanical properties, and has good degradation ability, safety and environmental protection.

This invention belongs to the field of wastewater treatment technology, specifically relating to a reagent for treating mineral processing wastewater and its preparation method. The reagent comprises the following components by weight: 5-15 parts flocculant, 10-20 parts coagulant aid, 8-12 parts nonionic surfactant, 10-15 parts anionic surfactant, 1-3 parts foaming agent, 10-15 parts starch, and 20-30 parts water. This invention utilizes carbon nanotube-acetyloxyoxime acid complex-modified polyacrylamide as a flocculant, and combines it with samarium-doped polyaluminum magnesium chloride as a coagulant aid, to synergistically achieve the efficient and simultaneous removal of heavy metal ions, COD, and suspended solids.

The invention provides a water-resistant methane combustion catalyst and a preparation method and application thereof.The water-resistant methane combustion catalyst comprises active components and a carrier, the active components comprise Pd and Pt, the carrier comprises inorganic matter modified by metal elements and / or non-metal elements, the metal elements comprise Ti and / or rare earth elements, and the inorganic matter modified by metal elements and / or non-metal elements comprises inorganic matter modified by metal elements and / or non-metal elements. The non-metallic element comprises Si; the inorganic matter comprises aluminum oxide and / or boehmite. According to the water-resistant methane combustion catalyst disclosed by the invention, Pd and Pt are used as active components, and metal and / or nonmetal modified aluminum oxide is used as a carrier, so that the methane combustion catalyst has excellent water resistance, long service life, stability and low-temperature performance, and the water-resistant methane combustion catalyst can be industrially produced and applied on a large scale.

The present application relates to the field of pesticide technology, and specifically discloses a triclopyr oxyacetic acid·fine glufosinate·flusilazole microemulsion and its preparation method and application, wherein the microemulsion comprises the following components in parts by weight: 104.27-1042.7 parts of triclopyr oxyacetic acid, 100.49-602.97 parts of glufosinate, 23.18-115.9 parts of flusilazole, 60-160 parts of cosolvent, 130-530 parts of emulsifier, and 670-870 parts of water. The triclopyr oxyacetic acid·fine glufosinate·flusilazole microemulsion prepared in the present application has good herbicidal effect, good control effect, good stability, simple preparation method, and is easy to produce.

The invention provides a liquid crystal composition and a liquid crystal display device thereof. The liquid crystal composition comprises at least one compound as shown in a general formula I and at least one compound as shown in a general formula N, wherein the compound as shown in the general formula I accounts for 0.1-50% of the liquid crystal composition in percentage by weight. The invention also provides a liquid crystal display device containing the liquid crystal composition. The liquid crystal composition provided by the invention has relatively high optical anisotropy, relatively high clearing point, relatively high transmittance, relatively high epsilon perpendicular to / delta epsilon, relatively large Kave and good low-temperature stability, so that a liquid crystal display device comprising the liquid crystal composition provided by the invention has relatively high transmittance and relatively low light scattering; according to the liquid crystal composition disclosed by the invention, a liquid crystal display device containing the liquid crystal composition can obtain a good display effect. # imgabs0 #

The application discloses a low-temperature denitration catalyst and a preparation method thereof, and belongs to the technical field of flue gas denitration catalysts. 60 The catalyst is prepared by doping fullerene C 60 The pi electron system of C 60 is highly delocalized on the three-dimensional curved surface thereof, so that C 60 has excellent electron transfer capacity; and the doping proportion of C 60 can effectively promote the rapid progress of the catalytic reaction. Therefore, the catalyst prepared by the application can be applied to low-temperature flue gas denitration, can significantly improve the denitration efficiency, can widen the active temperature range of the catalyst, and can solve the problems of poor low-temperature activity, insufficient sulfur resistance and easy poisoning of traditional catalysts.

The invention relates to the technical field of green methanol preparation processes, in particular to a controllable micro-channel reactor green methanol preparation method based on low-temperature plasma activation, which comprises the following steps: (1) preparing a micro-channel reactor; (2) preparing a catalyst, wherein the catalyst comprises a main catalyst Cu / ZnO / Al2O3 and a cocatalyst rare earth doped CeO2; (3) preparing a micro-channel wall surface coating; (4) generating low-temperature plasma; (5) introducing a mixed gas of CO2, H2 and Ar into the microchannel reactor, and reacting at the temperature of 120-180 DEG C and the pressure of 3-5 MPa at the air speed GHSV of 5000-10000 h <-1 >; (6) adjusting reaction parameters in real time by adopting an intelligent control system; and (7) obtaining a high-purity methanol product, and realizing efficient activation of CO2 and H2 under relatively mild conditions by adopting a dielectric barrier discharge (DBD) plasma technology.

The present application discloses an optical material stripper, wherein the components and mass percentage ratios of the optical material stripper are: 20-25% of an alcohol amine compound, 10-15% of a stripping aid, and the balance is an organic solvent; the stripping aid is an amide solvent; the organic solvent is selected from two or more of N-methylpyrrolidone, piperidine or diethylene glycol ether compounds. The present application has good stability, good stripping effects on various types of photoresists used in the manufacturing process of liquid crystal display devices, fast stripping speed, and extremely weak corrosion to metals, which can effectively improve the manufacturing efficiency of liquid crystal display devices.

This invention discloses a phosphate ester-based pesticide emulsifier suitable for aerial spraying and its preparation method, belonging to the field of pesticide adjuvant technology. The emulsifier is formulated from isomeric alcohol polyoxyethylene ether phosphate, nonionic surfactant, co-emulsifier, and anti-drift modifier in a specific ratio, with isomeric alcohol polyoxyethylene ether phosphate as the core active component. Through precise control of the component ratios and preparation process, the emulsifier possesses excellent emulsifying and dispersing properties, low foaming properties, anti-drift properties, and low-temperature stability. It is suitable for the high dilution ratios, rapid atomization, and complex operating environments of drone aerial spraying, effectively solving the technical pain points of existing aerial spraying emulsifiers such as easy drift, poor emulsification stability, insufficient efficacy, and easy precipitation at low temperatures. The preparation process of this invention is simple, environmentally friendly, and has low production costs. It can be widely applied to aerial spraying operations of various pesticide emulsifiable concentrates, water-in-oil emulsions, and microemulsions, significantly improving pesticide utilization, reducing pesticide waste and environmental pollution, and has extremely high practical value and promising prospects for promotion.

The invention discloses a cyflufenamid-fluopyram composition, the preparation raw materials at least comprise an active compound, the active compound comprises cyflufenamid and fluopyram, and the weight ratio of the cyflufenamid to the fluopyram is 1: (1-5). According to the microemulsion dosage form prepared by the invention, the particle size of the microemulsion is close to nanoscale, the microemulsion can be absorbed by crops more easily, the surface tension of contact with plant leaves is small, the microemulsion is easy to spread on the surfaces of the leaves, and liquid medicine is not easy to lose; the prepared missible oil dosage form and liquid medicine have stronger adhesion, can be mixed with a fertilizer for use, have good compatibility, and do not generate the problems of layering and flocculation; the prepared soluble concentrate can form a true solution after being diluted, and is convenient to apply and good in cold and hot storage stability. The nematicide provided by the invention is a broad-spectrum bactericide, can prevent and control alternaria leaf spot, leaf spot, gray mold, powdery mildew and the like on fruits, vegetables and field crops, is an efficient, green and low-toxicity nematicide, and has unique mobility and low toxicity.

The invention discloses shower gel and a preparation method thereof, and relates to the field of daily chemical products. The shower gel is prepared from the following raw materials in parts by weight: 65 to 70 parts of water, 0.05 to 0.3 part of disodium ethylene diamine tetraacetate, 20 to 30 parts of a surfactant, 7 to 12 parts of a viscosity regulator, 0.3 to 0.7 part of an acidic pH regulator, 0.3 to 0.5 part of phenoxyethanol, 0.4 to 0.8 part of a bacteriostatic agent and 0.2 to 0.4 part of essence. The viscosity modifier is prepared from cocamide MEA, PEG-120 methyl glucose dioleate, sodium carboxymethyl starch, an acrylic acid-acrylate copolymer and sodium chloride. The viscosity modifier prepared from cocamide MEA, PEG-120 methyl glucose dioleate, sodium carboxymethyl starch, acrylic acid-acrylate copolymer and sodium chloride is compounded with the surfactant, so that the formed shower gel has relatively high temperature stability and still keeps proper viscosity in high-temperature and low-temperature environments.