38 results about "Sodium polycarboxylate" patented technology

The invention discloses a battery diaphragm and a preparation method thereof, and a secondary battery, and belongs to the field of secondary batteries, the battery diaphragm comprises a base film and a coating laminated on at least one side surface of the base film, and the coating comprises organic colloidal particles, inorganic particles, a first dispersant, a second dispersant, a first binder, a second binder, a first thickener and a second thickener. The organic colloidal particles are arranged on the surface, away from the base film, of the coating in a protruding mode, and the inorganic particles, the first dispersing agent, the second dispersing agent, the first binding agent, the second binding agent, the first thickening agent and the second thickening agent are embedded in the coating. The first dispersing agent is selected from at least one of polyoxyethylene ether derivatives, polyol ester and siloxane, and the second dispersing agent is selected from at least one of sodium polycarboxylate, ammonium polyacrylate and sulfonate. The battery diaphragm has good adhesion, liquid absorption and retention properties, heat resistance and mechanical strength.

The application discloses a preparation method of modified cerium oxide for high-toughness and ultraviolet-resistant nylon and the nylon. The preparation method comprises the following steps: S10, adding modified cerium oxide and sodium polycarboxylate into water according to a mass ratio of (9-12):1, and performing first sand grinding to obtain a first solution; S20, uniformly mixing the first solution and octamethylcyclotetrasiloxane according to a mass ratio of (8-10):1, and performing second sand grinding to obtain a second solution; S30, drying the second solution to obtain solid modified cerium oxide; and S40, crushing the solid modified cerium oxide to obtain modified cerium oxide. The sodium polycarboxylate and the octamethylcyclotetrasiloxane are used to modify the cerium oxide, so that the obtained modified cerium oxide is uniformly dispersed when used for preparing the nylon, and meanwhile, the toughness and the ultraviolet resistance of the prepared nylon are improved.

The invention provides an electrolyte soaking-resistant coating high-temperature-resistant diaphragm and a preparation method thereof.The high-temperature-resistant diaphragm comprises a diaphragm substrate and a diaphragm coating, the diaphragm coating is formed by coating high-temperature-resistant fiber polymer slurry, and the high-temperature-resistant fiber polymer slurry comprises, by mass, 2-5 parts of PPS fibers and 8-15 parts of PI polymers. The coating comprises the following components in parts by weight: 65-80 parts of inorganic ceramic powder, 4-8 parts of a CMC thickener, 3-6 parts of an acrylic resin adhesive and 0.1-0.5 part of a sodium polycarboxylate surfactant. The fiber polymer is coated on the basis of the polyolefin diaphragm, so that the high-temperature resistance of the diaphragm and the stability of the diaphragm in an electrolyte can be improved, the stability of the diaphragm can be maintained in a battery cell baking stage to prevent black leakage of a pole piece, and the cohesiveness of a coating and the pole piece after liquid injection of the battery cell can be improved; the swelling phenomenon caused by thermal runaway due to fluffy battery cells is prevented, and the safety of the battery is improved.

The invention provides a high-wear-resistance temperature-sensitive butyronitrile glove and a preparation method thereof, and belongs to the technical field of rubber, the high-wear-resistance temperature-sensitive butyronitrile glove comprises the following raw materials by mass: 100-120 parts of butyronitrile latex; 5 to 15 parts of chlorinated polyvinyl chloride; 8-12 parts of a temperature sensing material; 1.2 to 3 parts of ethanol; 0.5-2 parts of a sodium polycarboxylate dispersant; 0.3 to 1 part of sodium dodecyl benzene sulfonate; 3-5 parts of a wear-resistant additive; 1-2 parts of a vulcanizing agent; 0.5 to 1 part of accelerant; 2-3 parts of a compatibilizer; 0.5-1 part of an anti-aging agent; and 20-40 parts of pure water. According to the glove, the butyronitrile latex is used as a main raw material, and the temperature sensing material, the wear-resistant additive and other functional additives are added, so that the combination of high wear resistance and a temperature regulation function is realized, and the problems of insufficient wear resistance and poor temperature adaptability of the traditional butyronitrile glove in an extreme environment are solved.

This invention relates to the field of rubber processing aids, and more particularly to a sodium polycarboxylate stripping dispersant for rubber, its preparation method, and its application. This invention uses a ternary copolymer system composed of acrylic acid, maleic anhydride, and acrylamide in a reasonable ratio. The prepared sodium polycarboxylate can withstand harsh stripping conditions (high temperature and high shear) and has highly efficient anti-caking properties. The sodium polycarboxylate prepared by this invention forms a stable protective layer on the surface of rubber particles through a triple mechanism of electrostatic repulsion, steric hindrance, and hydrogen bonding adsorption, effectively preventing the rubber from sticking and agglomerating at high temperatures.

The present patent application discloses a high-temperature resistant multifunctional liquid desulfurizer for drilling fluid and a preparation method thereof. The desulfurizer comprises the following raw materials in parts by weight: main agent 1: 1,3,5-tributyl-hexahydro-s-triazine, 30-40%; main agent 2: triethanolamine, 10-15%; main agent 3: nano zinc oxide, 10-15%; solvent: sulfolane, 5-10%; adsorbent: graphene oxide, 10-15%; suspending agent: carboxymethyl cellulose, 0.1-0.2%; defoaming agent: one or more of methyl silicone oil, ethyl silicone oil, phenyl silicone oil, and methylphenyl silicone oil, 0.1-0.5%; dispersant: one or two of sodium polyacrylate and sodium polycarboxylate, 1-5%; and the remainder is water. The desulfurizer of the present invention is based on the high-efficiency desulfurization of triazine and alcoholamine liquid desulfurizers, and introduces graphene oxide and nano zinc oxide to improve the adsorption capacity and temperature resistance of the desulfurizer, reduce the drilling fluid loss, and improve the rheological properties. It can be used in both water-based and oil-based drilling fluids, has high desulfurization efficiency and fast speed, and meets the needs of on-site drilling desulfurization construction.

The invention discloses a preparation method of environment-friendly water-based metal colored paint, and relates to the technical field of preparation of environment-friendly water-based metal colored paint. The method comprises the following steps: preparing 35 to 55 parts of polyacrylate emulsion, 7 to 15 parts of anti-freezing thickening liquid intermediate, 15 to 25 parts of deionized water, 5 to 10 parts of environment-friendly pigment, 2 to 7 parts of sodium polycarboxylate, 2 to 4 parts of polyether modified siloxane, 1 to 3 parts of fluorocarbon, 5 to 10 parts of water-based aluminum paste, 2 to 6 parts of 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 1 to 3 parts of sodium benzoate and 0.5 to 1.5 parts of pH regulator. The anti-freezing thickening liquid intermediate is added to prepare the environment-friendly water-based metal colored paint, the freezing point of the paint can be effectively reduced, it is ensured that the paint cannot be frozen in a low-temperature environment, and therefore the good flowability and construction performance of the paint are maintained, the viscosity and consistency of the paint are improved, and the service life of the paint is prolonged. The phenomena of sagging, flowing or splashing of the coating during construction are prevented, the smoothness and covering power of coating are improved, and the layering condition of the coating after the metallic colored paint is shaken up is reduced.

The invention relates to a preparation method of high-dispersion gradient crystallized ferric sodium pyrophosphate, and belongs to the technical field of sodium ion batteries. The preparation method comprises the following steps: firstly, uniformly stirring iron phosphate, a sodium source, a carbon source and water to obtain initial slurry; then grinding the initial slurry under the action of sodium polycarboxylate, polyvinyl alcohol and polyethylene glycol to obtain fine ground slurry; and carrying out spray drying and sintering on the finely ground slurry to obtain the high-dispersion gradient crystallized ferric sodium pyrophosphate. A staged sanding process is adopted, different dispersants are added in each stage, the viscosity and particle size uniformity of the slurry are accurately regulated and controlled, meanwhile, a spray drying process is optimized to inhibit secondary agglomeration of particles after spray drying, and a multi-stage rotary kiln is further utilized subsequently, so that the secondary agglomeration of the particles after spray drying is inhibited. And the uniformity of the sintering process and the integrity of crystal form growth are guaranteed through atmosphere regulation and control and accurate setting of the platform temperature, and finally the electrical property of the material is effectively improved.

The invention relates to bead-shaped dry particles, calcined light fine glaze ceramic and a preparation method, the calcined light fine glaze ceramic is composed of a green body and a glaze layer, the glaze layer is composed of, by weight, 20-40% of bead-shaped dry particles and 60-80% of suspension liquid, and the suspension liquid is composed of, by weight, 3-10% of organic bentonite, 2-5% of sodium polycarboxylate, 0-5% of polyamide wax, 0-3% of fumed silica, 0.5-1% of AMP-95 and 5-10% of propylene glycol. The cleaning agent is prepared from the following components in percentage by weight: 1 to 3 percent of high-molecular dispersant, 5 to 10 percent of isopropyl alcohol, 0.03 to 0.1 percent of sodium benzoate and 60 to 83 percent of deionized water. The preparation method of the calcined light fine glaze ceramic comprises the following steps: (1) carrying out ball milling and pulping on the green body powder, and conveying to a spray drying tower to obtain green body powder; (2) feeding the powder into a mold cavity of a press for pressing to obtain a ceramic green body; (3) feeding the ceramic green body into a roller kiln for drying; (4) spraying engobe on the green bricks; (5) spraying calcined smooth glaze on the green brick; (6) green brick infrared drying; (7) performing multi-channel digital process decoration on the green body pattern to form a decorative pattern layer; and (8) feeding the green brick into a roller kiln, and firing to obtain the calcined light fine glaze finished product ceramic tile.

The invention discloses an insecticidal suspension which comprises the following components in percentage by weight: 5-20% of chlorfenapyr, 10-40% of lufenuron, 1-5% of a modified rosin polyether modifier, 0.5-10% of sodium polycarboxylate, 0.1-2% of an organic silicon synergist, 0.1-1% of a light stabilizer, 0.3-1% of an anti-crystallization agent, 0.1-0.5% of nano titanium dioxide and the balance of deionized water. By adding the complexing agent, the settling suspension resistance and the photolysis resistance of the insecticidal suspension are improved through the mutual synergistic effect.

This invention discloses a low-temperature rapid-fired high-density building ceramic brick and its preparation method, belonging to the technical field of building ceramic materials. The ceramic brick uses potassium-sodium feldspar, kaolin, clay, quartz sand, calcined talc, wollastonite, waste ceramic powder, a low-temperature eutectic densifying component, sodium carboxymethyl cellulose, sodium polycarboxylate dispersant, and water as raw materials. The low-temperature eutectic densifying component has a borosilicate glassy phase coating layer, lithium aluminum silicon crystal nuclei, and a calcium-magnesium flux phase. The brick is prepared by ball milling, spray granulation, aging, pressing, drying, and rapid firing. This invention can promote liquid phase wetting, interstitial filling, and glassy phase bridging under low-temperature rapid firing, improving density, mechanical properties, and the utilization rate of waste ceramic powder.

The invention provides a composite multifunctional battery diaphragm as well as a preparation method and application thereof, and belongs to the field of new energy batteries. The composite multifunctional battery diaphragm comprises a polyolefin base membrane and a composite coating positioned on at least one side surface of the polyolefin base membrane, the composite coating is prepared from the following raw materials: an alpha-crystal-form aluminum oxide raw material, a sodium-containing boehmite raw material, a ZIF-8 metal organic framework raw material, a water-based adhesive, a sodium polycarboxylate dispersant, disodium ethylene diamine tetraacetate, polyvinyl alcohol and a water-based polyether modified organic silicon wetting agent. The problems of dissolution of manganese ions in an LMFP battery system and poor stability of a high-energy-density battery system are synchronously solved, the interface resistance can be effectively reduced, the pore structure is optimized, the high-temperature resistance of the diaphragm is improved, the growth and thermal runaway of lithium dendrites are inhibited, the affinity of the diaphragm to an electrolyte is improved while the side reaction of the electrolyte is reduced, and the service life of the diaphragm is prolonged. Meanwhile, the industrial cost advantage is realized.

The invention discloses a saline-alkali-resistant moisturizing preparation for promoting germination of seeds in saline-alkali soil as well as a preparation method and an application of the saline-alkali-resistant moisturizing preparation. The salt and alkali resistant moisturizing preparation is prepared from the following raw materials in percentage by weight: 8 to 15 percent of mineral source potassium fulvate, 5 to 10 percent of sodium polyacrylate, 0.5 to 2 percent of sugar alcohol chelated zinc, 0.1 to 0.5 percent of indolebutyric acid, 0.2 to 0.8 percent of sodium polycarboxylate, 0.1 to 0.3 percent of sodium benzoate and the balance of water. By scientifically compounding the mineral source potassium fulvate, the water-soluble high-molecular polymer and the bioactive components, efficient germination of seeds in the saline-alkali soil and stress-resistant growth of seedlings are achieved, and the method is suitable for precise water supplementing scenes such as drip irrigation and spray irrigation.

The invention discloses a bactericide containing fluxapyroxad and epoxiconazole, which is prepared from the following raw materials in percentage by weight: 5 to 20 percent of epoxiconazole, 5 to 20 percent of fluxapyroxad, 0.01 to 0.5 percent of defoaming agent and the balance of solvent. The weight ratio of the fluxapyroxad to the epoxiconazole is 1: (1-5), the fluxapyroxad and the epoxiconazole are prepared into the suspension liquid, the prepared pesticide suspension liquid can improve the sterilization and antibacterial capacity of a system and cannot generate cross resistance, and formed pesticide spray is small in particle size and can be used for spraying pesticide. The wetting dispersant adopts the combination of sodium polycarboxylate and alkyl naphthaldehyde condensate, so that the wetting permeability of the liquid medicine can be improved, fog drops are prevented from falling off in the spraying process, the adhesion of the liquid medicine is enhanced, and the deposition amount of the liquid medicine on the surface of a target is increased.

The invention discloses a preparation process of a rubber passing ring and a meson of a high glass fiber halogen-free injection molding machine, and particularly relates to the technical field of rubber passing ring and meson preparation. The metal ceramic slurry is prepared from the following raw materials in percentage by weight: 10.5 to 31.5 percent of polyethylene glycol, 5.0 to 25.5 percent of sodium alginate, 2.0 to 10.5 percent of sodium silicate, 0.5 to 5.9 percent of silane coupling agent, 0.01 to 0.10 percent of sodium polycarboxylate, 0.01 to 1.00 percent of NXZ defoaming agent, 23.5 to 38.5 percent of Mo powder, 1.6 to 4.8 percent of binary boride powder, 1.3 to 7.5 percent of Cr powder, 0.3 to 4.2 percent of V2B powder and 13.0 to 22.8 percent of Ni powder. The metal boride ceramic coating is formed on the whole surface of the rubber ring and the meson of the injection molding machine, and the metallographic structure of the ceramic coating is Ni-based solid solution + Mo2NiB2 ceramic, so that the corrosion resistance and the wear resistance of the surfaces of the rubber ring and the meson of the injection molding machine are synchronously improved, and compared with the prior art, the service life of the rubber ring and the meson of the injection molding machine is greatly prolonged in a high-glass-fiber halogen-free injection molding environment.

The invention relates to the technical field of coatings, and discloses a sand velvet texture coating. The sand velvet texture coating comprises deionized water, hydrophobic modified cellulose, an organic silicon defoaming agent, a sand velvet thixotropic agent, a polycarboxylic acid sodium salt dispersing agent, a wetting agent, rutile titanium dioxide, spherical silica powder, an acrylic emulsion, a PH value regulator, propylene glycol, an alkyd 12 film-forming agent, a sterilizing agent and an alkali swelling thickening agent. The components such as the spherical silica powder and the sand velvet thixotropic agent are added in the ratio of the coating, so that the formed coating has better sand velvet texture, stronger stereoscopic impression and better visual effect.

The invention relates to the field of sandy soil improvement, in particular to a sandy soil improver which comprises the following raw materials in parts by mass: 1 part of nano clay, 5-10 parts of a plant polymer adhesive, 5-15 parts of soluble plant hemicellulose and 5-15 parts of charcoal. Comprising the following steps: adding sodium polycarboxylate into nano-clay according to 0.1-0.5% of the nano-clay, and mixing; the amylopectin is prepared by crushing glutinous rice or extracting from glutinous rice or corn starch, adding rice bran powder into the amylopectin according to 10-20% of the amylopectin, and mixing; the glucomannan is extracted from the konjak; the straw or the rice husk is pyrolyzed in a high-temperature oxygen-deficient closed container to prepare the biochar. The sandy soil improver and sandy soil or sand are applied to ecological restoration of the following application scenes according to the proportion of 1: 10000: tailing pond ecological restoration, ecological restoration after sand making of mine solid waste, desert gobi ecological restoration and stony desertification ecological restoration. By adopting the technical scheme, the physical characteristics of the sandy soil or the sand can be optimized, and the moisture and fertilizer retention and maintenance capabilities of the sandy soil or the sand are improved.

The invention discloses a method for preparing an environmentally friendly water-based metallic paint, and relates to the technical field of preparing an environmentally friendly water-based metallic paint. The method comprises the following steps: 35-55 parts of polyacrylate emulsion, 7-15 parts of antifreeze thickening liquid intermediate, 15-25 parts of deionized water, 5-10 parts of environmentally friendly pigment, 2-7 parts of sodium polycarboxylate, 2-4 parts of polyether modified siloxane, 1-3 parts of fluorocarbon compound, 5-10 parts of water-based aluminum silver paste, 2-6 parts of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, 1-3 parts of sodium benzoate, and 0.5-1.5 parts of pH regulator. The present invention prepares an environmentally friendly water-based metallic paint by adding an antifreeze thickening liquid intermediate, which can effectively reduce the freezing point of the paint, ensure that the paint will not freeze in a low-temperature environment, thereby maintaining its good fluidity and construction performance, and increase the viscosity and consistency of the paint, prevent the paint from sagging, flowing or splashing during construction, improve the smoothness and covering power of the coating, and reduce the paint stratification after the metallic paint is shaken.

The invention relates to the technical field of building coatings, in particular to a heat-insulation and heat-preservation water-based colorful exterior wall coating and a preparation method thereof. The coating is prepared from the following raw materials in parts by weight: 15-25 parts of a water-based film-forming emulsion, 10-18 parts of nano silicon dioxide aerogel, 6-12 parts of ceramic far infrared powder, 7-10 parts of hollow silicon dioxide glass beads, 18 parts of hydroxypropyl starch, 3 parts of glycerol, 5 parts of phthalocyanine blue, 1.5 parts of a sodium polycarboxylate dispersant, 0.8 part of a fatty acid polyoxyethylene ether wetting agent, 0.6 part of an organic silicon defoaming agent and 0.8-1.8 parts of a thickening agent. The coating is prepared from the following components in parts by weight: 1 part of a silane coupling agent KH560, 3-5 parts of a coalescing agent, 12 parts of talcum powder and 18-20 parts of deionized water. According to the heat-insulation and heat-preservation water-based colorful exterior wall coating and the preparation method thereof, multiple inherent technical defects in the prior art are effectively overcome, the comprehensive performance of a product is remarkably improved, and the heat-insulation and heat-preservation water-based colorful exterior wall coating and the preparation method thereof have outstanding substantive features and remarkable progress.

The invention discloses a magnetic bead preserving fluid as well as a preparation method and application thereof. According to the magnetic bead preserving fluid, the dispersity of magnetic beads preserved at an extreme temperature is improved through the combined action of polyethylene glycol, sodium polycarboxylate and a surfactant. When the magnetic beads are preserved by using the magnetic bead preserving fluid disclosed by the invention, the extraction performance is not influenced and even the extraction efficiency is improved when the magnetic beads are preserved at normal temperature to 40 DEG C for a long time, and the nucleic acid recovery rate is relatively high when the magnetic beads are preserved at-20 DEG C to 50 DEG C.

The invention discloses a high-performance repairing material and a preparation method and application thereof, and belongs to the technical field of building materials and structural durability repairing, the high-performance repairing material comprises a component A and a component B, the component A comprises high belite sulphoaluminate cement, nano silicon dioxide, a polycarboxylic acid anti-freezing water reducing agent, a nano self-repairing component, a polycarboxylic acid sodium salt dispersing agent and quartz sand; the component B comprises an anti-freezing agent, water and a functional anti-erosion agent. The repairing material prepared by the invention forms compact C-(A)-S-H gel in situ in an interface area and constructs multiple barriers of hydrophobic, compact and barrier, and has good construction adaptability, early mechanical property and durability at the temperature of-20 DEG C or above under the action of salinized environment and freeze-thaw cycle; and the concrete has excellent freeze-thaw cycle resistance, and is suitable for durability repair of cold-region infrastructures such as ultrahigh-voltage power transmission tower footing and expressway roadbed.

The invention provides a novel polymer asphalt waterproof coating and a preparation method of the novel polymer asphalt waterproof coating. The waterproof coating is prepared from the following raw materials: 35 to 55 parts of SBS (styrene-butadiene-styrene) modified asphalt, 22 to 28 parts of styrene-acrylic emulsion, 8 to 12 parts of epoxy modified acrylate emulsion, 4 to 7 parts of furan modified polybutadiene dynamic crosslinking agent, 3 to 5 parts of silane coupling modified nano cerium dioxide, 10 to 14 parts of calcined kaolin, 6 to 9 parts of wollastonite, 2.0 to 3.0 parts of nonionic emulsifier, 0.4 to 0.7 part of polyether modified silicone oil defoaming agent and 0.6 to 1.0 part of sodium polycarboxylate. The water-based paint is prepared from the following components in parts by weight: 0.6-1.0 part of a polyurethane associative thickener, 0.2-0.4 part of a pH regulator, 0.1-0.2 part of a pH buffering agent, 18-23 parts of deionized water and 0.1-0.3 part of an anti-settling agent. All the components act together, so that the coating has good comprehensive properties such as water resistance, mechanical property, aging resistance and storage stability.

The invention discloses alumite paint capable of enhancing the color development effect and a preparation method of the alumite paint, and relates to the technical field of alumite paint. The water-based paint is prepared from the following components in parts by weight: 28 to 35 parts of modified polyacrylate emulsion, 8 to 12 parts of epoxy resin E-44, 12 to 18 parts of composite pigment of nano titanium dioxide and vanadium yellow, 6 to 15 parts of pigment component, 1 to 3 parts of monopotassium phosphate, 1 to 2 parts of silane coupling agent KH-560, 0.8 to 1.2 parts of sodium polycarboxylate dispersing agent and 25 to 32 parts of deionized water. According to the invention, a series of structures are arranged, and the triple dynamic pigment and the natural coloring agent are cooperated, so that a multi-layer developing effect of temperature change, light change, iridescent gradual change and natural ground color fusion is realized.

The present invention provides a manganese-zirconium surface conditioner composed, by weight, of the following ingredients: 15-19% manganese fluoride, 13-16% manganese nitride, 6-8% manganese dihydrogen phosphate, 7-12% zirconium boride, 5-9% zirconium carbide, 15-20% sodium polycarboxylate, 5-10% polyethylene glycol, and the balance sodium hydride. Due to the presence of zirconium, the manganese-zirconium surface conditioner significantly improves the hardness and acid and alkali resistance of the manganese phosphate film. Scanning electron microscopy reveals crystal sizes of 1-3 microns and virtually zero porosity.

The invention discloses an automotive iron-nickel-based electromagnetic shielding material and a preparation method thereof, and relates to the technical field of electromagnetic shielding of new energy automobiles. The iron-nickel-based electromagnetic shielding material for the vehicle comprises the following raw materials in parts by weight: 30-50 parts of modified iron-nickel-based alloy powder, 40-60 parts of polyurethane resin, 5-15 parts of modified polyethylene glycol terephthalate short fibers, 2-8 parts of nano-zinc oxide, 3-10 parts of linen fibers, 1-3 parts of a silane coupling agent KH550, 2-5 parts of a foaming agent, 0.3-0.8 part of 2, 3, 5-trimethyl-1, 3-pentanediol monoisobutyrate, 1-3 parts of a coupling agent KH550, 1-3 parts of a coupling agent KH550 and 1-3 parts of a coupling agent KH550. And 0.5-2 parts of sodium polycarboxylate, and a sufficient amount of electromagnetic shielding non-woven fabric. According to the material, full-band electromagnetic shielding is achieved through the synergistic effect of the modified iron-nickel-based alloy powder and the electromagnetic shielding non-woven fabric. Multiple modified raw materials and an optimized process are selected, light weight and excellent shielding performance are considered, the requirements of new energy automobiles are met, and the application value is high.

The invention discloses a sodium polycarboxylic acid dispersant based on N-(2-quinolyl) acrylamide and a preparation method of the sodium polycarboxylic acid dispersant, and belongs to the technical field of preparation of rubber dispersants. The dispersing agent is prepared by carrying out free radical copolymerization on acrylic acid, maleic anhydride, a functional monomer A, a functional monomer B and N-(2-quinolyl) acrylamide in an organic solvent and then carrying out alkali neutralization. By introducing the N-(2-quinolyl) acrylamide functional monomer, the anchoring capacity and steric hindrance effect of the dispersant on rubber particles are remarkably improved, and the dispersant has good high temperature resistance and oxidation resistance. Meanwhile, the dispersant has fluorescence characteristics due to the existence of quinoline groups, can be used for monitoring the content of the dispersant and the adhesion condition of a glue solution in real time, and is beneficial to optimizing the production process flow of solution polymerized styrene-butadiene rubber and improving the product quality and stability.

The present invention relates to a preparation method of hydroxypropyl methylcellulose ether for neutral putty for interior walls, and belongs to the technical field of cellulose ether building materials. The method comprises the following steps: mixing a hydrophilic modified graphene dispersion with a sodium polycarboxylate liquid dispersant; S2, spraying the liquid obtained by mixing the hydrophilic modified graphene dispersion with the sodium polycarboxylate liquid dispersant on the surface of the HPMC gel material after filter pressing in the HPMC granulation stage; granulating the gel material, crushing at low temperature, and obtaining a modified HPMC powder; and physically mixing the modified HPMC powder with a water reducer, pregelatinized corn starch, and polyethylene glycol through an air flow mixer according to a formula to obtain the hydroxypropyl methylcellulose ether for neutral putty for interior walls. The present invention effectively isolates the viscous material by relying on the material's own effect, improves the smoothness of the scraping process, and realizes efficient linear motion conversion, thereby improving the construction performance.

The invention relates to a CuO-Cr2O3-Al2O3 series coating with high temperature and high infrared emissivity and a preparation method of the CuO-Cr2O3-Al2O3 series coating. According to the technical scheme, chrome corundum powder, alpha-aluminum oxide micro powder, aluminum hydroxide micro powder, copper oxide powder of ferroferric oxide powder and manganese dioxide powder serve as raw materials, phenolic resin is added, and mixing, ageing, forming and drying are conducted; sintering at high temperature to obtain infrared radiation powder; mixing the infrared radiation powder, the alpha-aluminum oxide micro powder, the zirconium oxide powder and the silicon micro powder to obtain mixed powder; the preparation method comprises the following steps: mixing an aluminum dihydrogen phosphate aqueous solution, sodium carboxymethyl cellulose, sodium polycarboxylate and deionized water to obtain a mixed solution; and the mixed powder and the mixed solution are uniformly mixed, and the CuO-Cr2O3-Al2O3 series high-temperature and high-infrared-emissivity coating is prepared. A coating layer prepared from the coating is firmly combined with a furnace lining in an industrial furnace, has high infrared emissivity and small emissivity attenuation in the full wave band of 1-10 microns, can meet the energy-saving requirement of infrared radiation at the temperature of 1400 DEG C or above for a long time, and stably plays a radiation role.

The application belongs to the technical field of coated sand for casting, and particularly discloses high-precision coated sand, a preparation method and application thereof.The coated sand comprises raw sand, zirconium powder, red iron oxide, iron sand, brown corundum powder, nano metal powder, modified phenolic resin, potassium tripolyphosphate, polyoxypropylene polyoxyethylene propylene glycol ether, sodium polycarboxylate, magnesium dihydrogen phosphate, attapulgite, potassium chloride and the like.Through the synergistic effect of the components, the coated sand has excellent bending strength and shell removal performance in the casting process, small high-temperature expansion and low gas evolution, meets the requirements of high-precision coated sand, effectively solves the problems of pores, sand sticking, cracking and uneven thickness of castings, and the surface quality of the prepared castings is significantly improved, which is suitable for the production requirements of high-precision castings, and the raw materials are widely sourced and low in price, and have high practical value.