16results about How to "Good low temperature stability" patented technology

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 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 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.

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 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.

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 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.