34 results about "Sodium laurate" patented technology

The application discloses a kind of metal-loaded starch aerogel and its preparation method and application, comprising the following steps: (1) starch and water are prepared into starch milk, starch milk is heated, and gelatinized starch solution is obtained;(2) sodium laurate is added to the gelatinized starch solution and heated to react, and after the reaction is completed, starch-sodium laurate complex solution is obtained;(3) metal nitrate solution is added to the above-mentioned complex solution, and after stirring uniformly, a reducing agent is added to reduce metal ions, and metal-loaded starch hydrogel is obtained;(4) the above-mentioned hydrogel is pre-frozen and freeze-dried to obtain metal-loaded starch aerogel.The metal-loaded starch aerogel of the application has excellent ethylene adsorption capacity, with an adsorption capacity of about 32 mL / g, good adsorption stability, and the adsorption process can be carried out at normal temperature and pressure, which can be used for fruit preservation.

The invention discloses an organic fertilizer suitable for tea yield increase and insect killing and a preparation method thereof, and relates to the technical field of organic fertilizer and microbial fertilizer manufacturing. The organic fertilizer is prepared from straw, chicken manure, radix inulae, clinacanthus nutans, affine cudweed, periploca forrestii schltr, ellagic acid-rice protein zymolyte, sodium laurate modified diatomite, sodium humate, urea, compound microorganism bacteria and water. The compound microorganism bacterium is composed of candida utilis saccharomycetes and neurospora intermedia. The compound microorganism bacteria in the organic fertilizer are beneficial to accelerating fermentation decomposition of the straw, the chicken manure, the sodium humate, the urea and the traditional Chinese medicine plants and promoting macromolecular substances to be converted into micromolecular active ingredients, then ellagic acid-rice protein zymolyte and sodium laurate modified diatomite are supplemented, and the yield of tea tree planting is increased through reasonable proportion of nutritional ingredients.

The invention relates to a specific culture medium for detecting propionibacterium acnes in cosmetics and a detection method thereof, and belongs to the technical field of microbiological detection. Every 1000 mL of the specific culture medium contains 5-25 g of a nitrogen source, 5-10 g of a carbon source, 0.02-16 g of an inhibitor, 0.01-0.02 g of a color indicator, 0.1-13 g of a conditioning agent and the balance of a solvent. The inhibitor comprises Tween 80, a tea tree oil extract, cholate, sodium laurate and hydroxyproline. The specific culture medium provided by the invention is a propionibacterium acnes selective culture medium which is free of antibiotics, high in selectivity, sensitive in color development and low in cost. By optimizing the components of the culture medium and adding the selective inhibitor and the color indicator, the growth of other facultative anaerobic bacteria such as lactic acid bacteria can be effectively inhibited, specific culture and color development detection of propionibacterium acnes are carried out, and the accuracy and reliability of detection are improved.

The invention provides a bentonite cat litter enhanced, dust-reducing and deodorant agent and application thereof. The bentonite cat litter enhanced, dust-reducing and deodorant agent comprises coconut oil monoethanolamide and sodium laurate. The bentonite cat litter comprises bentonite and the bentonite cat litter enhancing, dust falling and deodorant distributed in bentonite particles and on the surfaces of the bentonite particles. The coconut oil monoethanolamide and the sodium laurate in the cat litter have an enhancing effect in the dry cat litter, and have the effects of deodorizing and enhancing caking strength after absorbing moisture and dissolving; sodium laurate also has the effects of assisting in dissolving coconut oil monoethanolamide and precipitating degenerated proteins and nucleotides as well as generated larger molecular nitrogen-containing compounds. Therefore, bentonite cat litter particles obtained by using the bentonite cat litter enhancing, dust-settling and deodorant have the characteristics of high strength, no dust, strong deodorization capability, high water absorption rate and high caking strength, and are suitable for popularization and application.

The invention discloses a reagent group for synergistically promoting sedimentation and rheological properties of high-alkali flotation copper tailings and application, and belongs to the technical field of tailings treatment. The agent group comprises an interface regulating agent A and a flocculating agent B; the interface regulating agent A simultaneously contains sodium stearate and sodium laurate; and the flocculant B is anionic polyacrylamide. In the treatment process of the high-alkali flotation copper tailings, an interface regulating agent A and a flocculating agent B are added at the same time to treat fine particles of the copper tailings. The interface regulating agent A is used for copper tailing surface modification, the flocculating agent B is used for copper tailing fine particle aggregation, the copper tailing fine particles are rapidly flocculated and settled through the synergistic effect of the interface regulating agent A and the flocculating agent B, and the rheological property of ore pulp is improved. Through the synergistic effect of the trace interface regulating agent and the flocculating agent, the sedimentation rate of the ore pulp can be effectively increased, meanwhile, the flowability of the ore pulp is improved, the conveying energy consumption of the ore pulp is reduced, and pipeline abrasion is reduced.

The invention discloses high-content wrinkle-free solid gum, and relates to the field of solid gum, the high-content wrinkle-free solid gum comprises the following components by mass: 30-35% of deionized water, 38-45% of modified starch, 22-25% of dextrin, 2-3% of sodium laurate, 0-1% of sucrose, 3-10% of a humectant, 0-0.5% of a pH regulator, and 0.3-0.5% of a preservative; according to the high-content wrinkle-free solid gum, the double breakthrough of high solid content and wrinkle resistance in the field of solid gum is realized, and the problem of deformation after paper bonding is remarkably solved; depending on the core formula of natural bio-based materials such as starch and dextrin, the product thoroughly eliminates the volatilization of organic solvents, and achieves the green and environment-friendly characteristics of no pollution and zero VOC in the whole process; through cooperation of starch molecule modification and plasticization of dextrin, the fluidity and ductility of colloid are fundamentally improved, the filling efficiency is greatly improved, the gluing process is smoother and more uniform, and the terminal use experience is remarkably optimized.

This invention discloses a gas-liquid dual-channel microporous layer, its preparation method, and its application, comprising the following steps: Step S1, zinc acetate is dissolved in methanol solution and dispersed to obtain solution A, 2-methylimidazole, hexadecyltrimethylammonium bromide, and sodium laurate are sequentially dissolved in methanol solution and dispersed to obtain solution B; Step S2, solution A is added to solution B, and after stirring, the solvent is removed to obtain a precipitate. The precipitate is vacuum dried to obtain a precursor p-ZIF-8, and the precursor p-ZIF-8 is subjected to high-temperature heat treatment to obtain porous carbon material p-ZIF-8-C; Step S3, the porous carbon material p-ZIF-8-C, a hydrophobic agent, and a solvent are mixed, dispersed, and prepared into a slurry. The slurry is coated onto a carbon fiber substrate in multiple applications. After coating, the solvent is removed by drying, and after calcination, a gas-liquid dual-channel microporous layer with a cracked surface is obtained. This invention improves the water management and gas transport capabilities inside the membrane electrode by precisely controlling the pore size of the carbon material and achieving adjustable microporous layer cracks, thereby enhancing the performance of the fuel cell.

The application discloses a silk protein composition for hair growth, and belongs to the technical field of hair growth silk protein compositions. The composition comprises moisturizing agents, fragrance imparting agents, cationic surfactants, acidity adjusting agents, co-emulsifiers, preservatives, antioxidants, oily ingredients, trace ingredients, lauroylsarcosine sodium, cocoyl glutamic acid TEA salt, sodium lauroamphoacetate, sodium chloride, phenoxyethanol, sodium laurate, citric acid, allantoin, cocamide propyl betaine, hydroxybenzoic acid ester, nicotinamide and a silk protein solution. The application has the beneficial effect that the product contains proteins and amino acids, can supplement the required nutrients for damaged and fragile hair, can stimulate the cell proliferation of human head hair papilla cells and hair matrix cells, can make the head of people with thinning hair or baldness regenerate hair, and can prevent hair loss for people with normal hair.

This invention provides a method for improving the compatibility of layered bimetallic hydroxides with coatings, comprising the following steps: S1, using a mixed solution of divalent and trivalent metal nitrates as a precursor, preparing nitrate-intercalated layered bimetallic hydroxides via co-precipitation; S2, preparing a long-chain fatty acid sodium solution, wherein the long-chain fatty acid sodium solution is at least one selected from sodium laurate solution, sodium dodecyl sulfate solution, and sodium dodecyl sulfonate solution; S3, adding the nitrate-intercalated layered bimetallic hydroxide to the long-chain fatty acid sodium solution, magnetically stirring at room temperature, and centrifuging, washing, drying, and grinding the resulting solution. The method for improving the compatibility of layered bimetallic hydroxides with coatings described in this invention improves the compatibility of layered bimetallic hydroxides with coatings by changing the terminal functional groups of long-chain fatty acids, thereby enhancing the physical barrier effect of the layered bimetallic hydroxides in the coating and increasing the anti-corrosion performance of the coating.

The invention relates to a construction method of Pickering emulsion with stable mineralized probiotic solid particles. Metal cations (Ca < 2 + >) and urease are locally enriched through the physical property of the bacterial surface, then urea is catalyzed in situ through urease to generate carbonate ions, and the carbonate ions and Ca < 2 + > chelated on the bacterial surface are subjected to a mineralization reaction to obtain mineralized probiotics. The preparation method comprises the following steps: preparing a Pickering emulsion, modifying by using a sodium laurate solution to endow the Pickering emulsion with wettability, and constructing a water-in-oil Pickering emulsion system by using modified and mineralized probiotic particles as a stabilizer. The system synergistically resists multiple extreme stresses through physical barrier and interface regulation, so that bacteria are protected from external invasion, the storage stability of probiotics and the tolerance to severe environments (high temperature and acid) are improved, and the system is matched with a high-fat food matrix and can be used for processing and manufacturing functional foods (toast, coffee, butter, cakes and the like).

The present invention relates to personal cleansing compositions. In particular, the present invention relates to skin cleansing compositions that provide improved antimicrobial benefits. This is achieved by the combination of sodium laurate and two activity enhancers, at least one of which is selected from the list of known chelating agents.

The invention provides a steel part nitriding method, and relates to the technical field of steel surface treatment. According to the method, a specific energizing agent is adopted in the steel part nitriding treatment process, in the energizing agent, yttrium oxide and lanthanum oxide belong to rare earth elements, in the nitriding process, the rare earth elements can adsorb hydrogen and react with hydrogen to generate rare earth hydrides, the rare earth hydrides are subjected to an interface reaction on the steel surface, and rare earth nitrides are generated; the rare earth nitride can permeate into the surface layer of the steel according to defects such as vacancy and short circuit mechanisms, so that the nitriding process is accelerated. And permeation of rare earth elements can refine grains, so that the surface hardness of the steel part is enhanced. Sodium laurate is used as a penetration enhancer and can promote penetration of nitrogen atoms on the surface of the steel part, so that the nitrogen atoms penetrate into the steel part more deeply, and formation of a deeper effective hardened layer is facilitated. In conclusion, by means of the steel part nitriding method, the surface hardness and the effective hardened layer depth of the steel part subjected to nitriding treatment can be improved.

The present invention belongs to the field of fertilizers, and specifically relates to a soil conditioner and its application. The soil conditioner comprises the following ingredients in parts by weight: 20-60 parts of biochar, 10-50 parts of silicon calcium potassium magnesium, 10-30 parts of bentonite, 15-35 parts of surfactants, and 3-15 parts of biostimulants; the surfactant comprises one or more of sodium lignin sulfonate, sodium laurate taurate, or rhamnolipid, and the biostimulant comprises one or more of humic acid, chitosan, trehalose, or polyglutamic acid. This conditioner is a compound of multiple surfactants and biostimulants, and has extremely significant three major soil conditioning properties of "breathability, fertilization, and water retention." It can break up soil compaction, loosen the soil, improve soil permeability, reduce soil bulk density, promote soil microbial activity, enhance soil fertilizer and water penetration, and increase crop yields.

The application discloses an organic fertilizer suitable for tea yield increase and insect killing and a preparation method thereof, and relates to the technical field of organic fertilizer and microbial fertilizer manufacturing. The organic fertilizer comprises straw, chicken manure, Tibetan wood incense, worry grass, mouse grass, black bone vine, tannic acid-rice protein enzymatic hydrolysate, sodium laurate modified diatomite, sodium humate, urea, compound microbial bacteria and water. The compound microbial bacteria are composed of Candida utilis and intercalary neura. The compound microbial bacteria in the organic fertilizer are helpful to accelerating the fermentation and decomposition of the straw, chicken manure, sodium humate, urea and traditional Chinese medicine plants, promoting the conversion of macromolecular substances into small-molecule active ingredients, and then assisting with the tannic acid-rice protein enzymatic hydrolysate and sodium laurate modified diatomite, so that the yield of tea tree planting is improved through reasonable proportioning of nutritional ingredients.

The invention relates to a scribable painting glue stick and a preparation method thereof.The scribable painting glue stick forms a double-soap-base system of sodium stearate and sodium laurate, under the cooperation of polyethylene glycol, the double-soap-base system enables the glue stick to generate the pseudoplastic fluid characteristic, namely, the glue stick is kept in a solid state during standing, and the paint.The scribable painting glue stick has the advantages that the paintable painting glue stick is not prone to cracking; the viscosity of the glue stick is reduced by 60-70% due to shear thinning during smearing, so that the tactile smoothness is improved, acrylic resin serves as a main adhesive, the basic viscosity of the glue stick is guaranteed, meanwhile, the adhesion and the tactile smoothness of the glue stick are ingeniously balanced due to the pseudoplastic fluid characteristics, and the smoothness of a smeared line of the glue stick is effectively improved; the silane coupling agent is adopted to modify the nano color paste, so that the nano color paste and a double-soap-base system form a hydrogen bond network structure, the color adhesion degree is greatly improved, and excellent color fastness is considered on the basis of high color concentration; the hydrogenated castor oil is adopted, so that the film forming efficiency and the storage durability of a painting scene are improved.

The invention discloses a starch-based gel carrier for collaborative delivery of vitamin D-calcium and a preparation method thereof. According to the invention, calcium ions and vitamin D nutrients are delivered by preparing a starch-based gel carrier, and the release of the carrier in a simulated in-vitro stomach and intestine digestion stage is determined. The starch-based gel carrier prepared by the invention can realize targeted release of calcium ions and vitamin D in an intestinal digestion stage, and is relatively low in cost and simple in process. By taking common corn starch and sodium laurate as examples, after a starch-sodium laurate compound and a starch-vitamin D compound suspension are added into nano calcium carbonate, formation of gel is induced in situ, and slow release of calcium ions and vitamin D in a gastric digestion stage and rapid release of calcium ions and vitamin D in an intestinal digestion stage are realized. The gel carrier can realize protection of vitamin D in a stomach digestion stage and targeted release of vitamin D in an intestinal digestion part, and can effectively improve absorption of vitamin D by a human body so as to assist absorption of calcium ions by the human body.

The invention discloses a sodium laurate modified molybdenum disulfide lubricant as well as a preparation method and application thereof, and belongs to the technical field of lubricating materials. The sodium laurate modified molybdenum disulfide lubricant is prepared from the following components in parts by mass: 75-85 parts of base oil, 12-18 parts of sodium laurate modified molybdenum disulfide powder, 2-4 parts of an antioxidant, 1.5-3 parts of an anti-wear agent and 1-2 parts of a rust remover, and the sodium laurate modified molybdenum disulfide powder is prepared by matching sodium laurate and molybdenum disulfide with deionized water and absolute ethyl alcohol; compared with modification by using unmodified molybdenum disulfide or other modifiers, the molybdenum disulfide is modified by sodium laurate, the dispersity of molybdenum disulfide is better and more stable, and even if an antioxidant, an anti-wear agent and a rust remover are similarly applied to the base oil, the service life of the base oil is prolonged. The sodium laurate modified molybdenum disulfide lubricant is more excellent in high-temperature oxidative decomposition resistance, lubricating performance and wear resistance.

The present application relates to a kind of high drug loading density somatostatin oral nanoparticles, the nanoparticles are spherical hydrophobic polyester material as carrier, several hydrophobic somatostatin ion pair complex particles are uniformly wrapped inside, and hydrophilic hydroxyethyl starch is grafted on the outer surface of polyester material, wherein the hydrophobic somatostatin ion pair complex is composed of somatostatin and counterion compound, and the counterion compound is at least one of sodium dodecyl sulfate, 8- (2-hydroxybenzamide) sodium octanoate, sodium oleate, sodium octanoate, sodium caprate, sodium laurate, sodium dodecyl sulfonate, sodium dioctyl sulfosuccinate;The hydrophobic polyester material is lactic acid-glycolic acid copolymer, polycaprolactone, polylactic acid.The nanoparticles are modified by hydroxyethyl starch, can quickly penetrate mucus barrier during oral delivery, and have high enterocyte penetration efficiency, can effectively improve the oral bioavailability of somatostatin.

The present application provides a bentonite cat litter reinforcing, dust-reducing and deodorizing agent and its application. The bentonite cat litter reinforcing, dust-reducing and deodorizing agent comprises coconut monoethanolamide and sodium laurate. The bentonite cat litter comprises bentonite and the above-mentioned bentonite cat litter reinforcing, dust-reducing and deodorizing agent distributed in and on the bentonite particles. In the present application, the coconut monoethanolamide and sodium laurate play the role of reinforcement in dry cat litter, and after hygroscopic dissolution, they play the role of deodorization and enhancement of the clumping strength; the sodium laurate also plays the role of assisting the dissolution of the coconut monoethanolamide and the precipitation of the denatured protein and nucleotide and the generation of larger molecular nitrogen-containing compounds in the present application. Therefore, the bentonite cat litter particles obtained by using the above-mentioned bentonite cat litter reinforcing, dust-reducing and deodorizing agent have the characteristics of high strength, no dust, strong deodorizing ability, high water absorption rate and high clumping strength, and are suitable for popularization and application.

The invention provides a combined collecting agent for flotation of scheelite and application of the combined collecting agent, the combined collecting agent comprises a main collecting agent and an auxiliary collecting agent, and the molar ratio of the main collecting agent to the auxiliary collecting agent is 1: (1-3); the main collecting agent is at least one of alkyl glycoside, sodium oleate, benzohydroxamic acid, oxidized paraffin soap, lauryl sodium sulfate, sodium laurate, sodium palmitate and sodium stearate; and the auxiliary collecting agent is at least one of alkyl dimethyl betaine, sulphobetaine, phosphate betaine, octadecyl betaine, cocoyl propyl betaine and coconut oil dimethyl betaine. The two collecting agents with different properties are combined for use, so that the scheelite selectivity can be remarkably improved, and the flotation separation effect of the scheelite and associated gangue of the scheelite is enhanced.

The application belongs to the technical field of composite materials, and relates to a preparation method of a metal hydroxide-cellulose composite material, which comprises the following steps: firstly, preparing a zinc salt precursor reaction solution; then, according to the proportion of biomass fiber aluminum film and the precursor reaction solution being 50-100 g / L, immersing the biomass fiber aluminum film in the precursor reaction solution; carrying out hydrothermal reaction at 60-120 DEG C for 5-10 h; cooling, filtering, washing and drying to obtain biomass cellulose-metal hydroxide nanosheets; then, according to the material ratio of biomass cellulose-metal hydroxide nanosheets and sodium laurate solution being 60-120 g / L, in-situ growing the hydrophobic biomass cellulose-metal hydroxide nanosheets; and then, electrospinning on the surface of the hydrophobic biomass cellulose-metal hydroxide nanosheets to deposit cellulose acetate, so that the metal hydroxide-cellulose composite material is obtained. The prepared material is applied to energy-saving packaging materials, has asymmetric infrared radiation performance, can effectively control humidity, dissipate heat and inhibit bacteria, and can be used for fresh-keeping packaging of food and fresh materials.

The invention provides a novel green synchronous grouting material and a preparation method thereof, and the synchronous grouting material is prepared from the following raw materials in parts by weight: 5 to 12 parts of cement, 8 to 20 parts of slag, 12 to 25 parts of steel slag, 250 to 350 parts of fine sand containing mud powder, 0.1 to 1.0 part of sodium laurate, 0.03 to 0.2 part of cellulose fiber, 2 to 10 parts of biomass carbon, 0.2 to 1.5 parts of sodium dodecyl sulfate and 20 to 60 parts of water. According to the invention, the silt-containing fine sand is used as a main raw material and is matched with the cement, the slag, the steel slag and the specific additive, so that the obtained synchronous grouting material has excellent strength and also has excellent hydrophobicity and corrosion resistance.

The invention provides an arotinolol hydrochloride quick-release tablet and a preparation method thereof, and belongs to the technical field of pharmaceutical preparations, the arotinolol hydrochloride quick-release tablet comprises a tablet core and a coating layer, the tablet core comprises arotinolol hydrochloride, dextran, a stabilizer, a diluent, a disintegrating agent and an adhesive, and the stabilizer is sodium laurate. According to the arotinolol hydrochloride quick-release tablet, the dextran is matched with the stabilizer sodium laurate, so that the defects of instability and poor solubility of arotinolol hydrochloride can be overcome, and the problems of slow dissolution and poor stability of the prepared arotinolol hydrochloride quick-release tablet are avoided.

The application discloses a kind of natural cream essence and preparation method, the method is added flavour protease 30~45 ℃ in the whipped cream treated by ultra-high pressure and hydrolyzed for 5~6h, after enzyme inactivation, pH value is adjusted to 7.0~8.0;Add anhydrous ethanol, water and sodium laurate, heat to 35~45 ℃, after homogenization emulsification, add lipase and hydrolyze for 30~60 minutes;Add NaCl solution of 0.2~0.5 times of the mass of whipped cream, and the amount of NaCl added is 0.1~0.5% of the mass of whipped cream, continue to hydrolyze for 3~4h at 35~45 ℃;Add CaCl2 solution of 0.2~0.5 times of the mass of whipped cream, stir evenly, and the amount of CaCl2 added is 0.2~1.0% of the mass of whipped cream, the reaction temperature is reduced to 15~25 ℃ within 20~30 minutes, keep the temperature and continue to hydrolyze for 1~2h;Inactivate enzyme, and obtain natural cream essence.The natural cream essence prepared by the application has no sour taste, and the fragrance intensity is sufficient.

The present application relates to a kind of specific culture medium for detecting propionibacterium acnes in cosmetic and its detection method, belong to microorganism detection technical field.The specific culture medium of the present application contains 5-25g nitrogen source per 1000mL culture medium, 5-10g carbon source, 0.02-16g inhibitor, 0.01-0.02g color indicator, 0.1-13g regulator, and the rest is solvent;The inhibition includes Tween 80, tea tree oil extract, bile salt, sodium laurate and hydroxyproline.The specific culture medium provided by the present application is a kind of antibiotic-free, high-selectivity, color-sensitive and low-cost propionibacterium acnes selective culture medium.By optimizing the composition of culture medium, adding selective inhibitor and color indicator, the growth of other facultative anaerobes such as lactic acid bacteria can be effectively inhibited, the specificity of propionibacterium acnes is cultured and color detection is carried out, and the accuracy and reliability of detection are improved.

The invention relates to the technical field of fiber materials, in particular to a method for producing porous maguey fibers through fermentation, which comprises the following steps: cleaning maguey leaves and crushing to obtain a fiber raw material; mixing a fiber raw material with deionized water to obtain a fiber suspension; adding a compound enzyme into the fiber suspension to obtain enzyme-treated fibers; inoculating microorganisms into the fiber subjected to enzyme treatment, fermenting, and carrying out gas exchange and stirring once every 12 hours during the fermentation so as to promote metabolism of the microorganisms; when the total fermentation time reaches 1 / 2, adding a nanocrystallization plant polyphenol compound and sodium laurate, and continuing fermentation; after fermentation is completed, filtering, washing and then carrying out low-temperature vacuum drying treatment to obtain the porous agave fiber. According to the method, the porosity and the mechanical property of the maguey fiber can be effectively improved by adopting a process of combining mixed strain fermentation and nanocrystallization of the plant polyphenol compound.

A PFAS-free polymer processing aids mixture, comprising from 2.0 to 40.0 wt.% of one or more inorganic agents based on the total weight of the PFAS-free polymer processing aids mixture wherein the one or more inorganic agents are selected from the group consisting of montmorillonite, zeolite, silica, barium sulfate, calcium silicate, calcium sulfide, silicon dioxide, zinc oxide, aluminum oxide, magnesium oxide, neodymium oxide, and boron nitride; and two or more organic metal salts selected from calcium stearate, zinc stearate, barium stearate, aluminum monostearate, potassium stearate, magnesium stearate, sodium stearate, zinc acetate, sodium acetate, sodium caprylate, sodium laurate, sodium behenate, sodium 1-decane sulfonate, and sodium dodecyl sulfate.

This invention discloses a biomass-based surfactant-type thickener and its preparation method, belonging to the field of thickener technology. The thickener is prepared by emulsion polymerization using biomass-based surfactants such as dodecyl glucoside or sodium lauryl laurate, along with various monomers, including hydrophobic and hydrophilic monomers. The preparation process includes steps such as forming an initial emulsion aqueous phase, preparing a hydrophobic monomer emulsion, mixing functional monomers to form a composite emulsion, and temperature-controlled dropwise addition reaction. Compared with existing technologies, the thickener of this invention exhibits excellent high-temperature shear viscosity retention and structural recovery performance. Furthermore, being derived from biomass, it is environmentally friendly, readily degradable, and suitable for water-based systems such as latex paints and adhesives.

The present invention discloses a silver powder, a preparation method and an application thereof, and belongs to the technical field of silver powder. The preparation method of the silver powder comprises: mixing a silver ion solution, a reducing solution and a dispersant solution to react and obtain a reaction liquid; separating the reaction liquid into solid and liquid, mixing the solid with a coating agent solution, and drying; the coating agent solution comprises at least one of lauric acid, sodium laurate, a silane coupling agent, oleic acid, lauric acid, stearic acid, palmitic acid and benzotriazole, and at least one of acrylic resin, rosin resin and polyvinyl butyral. By introducing a resin with high adhesion in the process of preparing the silver powder and using the resin as a coating agent component, the adhesion of the TOPCon back-side fine grid slurry after printing on the silicon wafer can be improved, thereby avoiding the phenomenon of grid line falling off of the back-side slurry. At the same time, it can ensure that the slurry viscosity is low, improve printing smoothness, and avoid the problem of a large number of broken grids during the printing process.

The invention relates to the technical field of hydrotalcite materials, in particular to ultrathin MnNiFe-LDO and a preparation method and application thereof.The ultrathin MnNiFe-LDO is composed of MnNiFe-A-LDO, A is SLS or SL or SPT or SSA, SLS is lauryl sodium sulfate, SL is sodium laurate, SPT is sodium p-toluenesulfonate, and SSA is 5-sulfosalicylic acid. The preparation method comprises the following steps: 1, dissolving manganese chloride, ferric nitrate and nickel nitrate in deionized water to obtain a mixed solution; step 2, adding urea and sodium citrate into the mixed solution, and finally adding a surfactant; 3, pouring the mixed solution in the step 2 into a polytetrafluoroethylene high-pressure reaction kettle, and filtering, washing and drying after the reaction is finished; and 4, a product obtained in the step 3 is subjected to heat treatment, and MnNiFe-A-LDO is obtained. When the adding amount of the ultrathin MnNiFe-SSA-LDO is 5.0 g / L, the removal rate of 50 mg / L Cu (II) reaches 97.6%. After the ultrathin MnNiFe-SSA-LDO (5.0 g / L) is treated for 4 hours by taking the circuit board wastewater containing Cu < 2 + > as an object, the removal rate is up to 82.34%, and the adsorption capacity is up to 247.02 mg / g.