13 results about "Sodium polycarboxylate" patented technology

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 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.

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 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 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 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 invention discloses a vapor-permeable polymer cement waterproof coating and a preparation method thereof. The invention relates to a high-temperature-resistant coating which is composed of a liquid material and a powder material, and the mixing mass ratio of the liquid material to the powder material is 1: (2.0-2.3) when the coating is used. Wherein the liquid material is mainly composed of an elastic acrylate-organic silicon-fluorocarbon ternary composite emulsion, a tetrabutyl orthosilicate hydrolysate, a sodium polycarboxylate dispersant, a fatty acid macrogol ester dispersant, a composite anti-aging aid, a sodium bicarbonate micro-foaming agent, a citric acid micro-foaming agent, an aluminum sulfate coagulant and permeable epoxy resin; the powder material is prepared from a nano-porous silicon dioxide-micron diatomite composite vapor permeable material, modified graphene oxide, nano-cellulose, sulphoaluminate cement, Portland cement, sodium sulfate and quartz sand. Through innovation of a component system, optimization of structural design and improvement of a preparation process, synergistic improvement of six performance dimensions of vapor permeability, water resistance, toughness, durability, environmental protection and construction is realized, and the technical problem of a traditional product is solved.

The invention discloses a near-infrared absorption coating and a preparation method thereof, and relates to the technical field of coatings. The invention discloses a near-infrared absorption coating. The high-temperature-resistant plastic comprises the following raw materials in parts by weight: 45-60 parts of polyvinyl acetate resin, 15-25 parts of modified ferrite powder, 3-7 parts of modified graphite powder, 3-8 parts of sodium polycarboxylate, 2-6 parts of dioctyl adipate, 1-4 parts of an antioxidant 168, 15-25 parts of ethyl acetate, 8-15 parts of nano calcium carbonate, 2-5 parts of a titanate coupling agent, 10-20 parts of talcum powder, 1-3 parts of fatty alcohol-polyoxyethylene ether and 2-5 parts of urea resin. And 0.1-0.3 part of ammonia water. The near-infrared absorption coating is scientific in formula, and the ratio of the film-forming substance to the functional filler is reasonable. And the modified ferrite and the graphite powder are subjected to multi-step accurate treatment, so that the dispersity and the absorption performance are improved. In the preparation process, stirring speed, temperature and other parameters are regulated step by step to ensure uniform mixing of the raw materials. The grinding of the sand mill ensures that the fineness reaches the standard, the assistant synergistically optimizes the stability and constructability of the coating, and the technical logic is complete and reliable.

This invention discloses a refractory and anti-oxidation coating for carbon electrodes and its preparation and application methods. The coating is a homogeneous and stable aqueous suspension, comprising, by weight: 28-35 parts potassium silicate, 12-18 parts sodium silicate, 18-25 parts α-alumina micro powder, 10-15 parts boron carbide micro powder, 6-10 parts nano-silicon powder, 4-7 parts cryolite micro powder, 1-3 parts magnesium fluoride micro powder, 3-5 parts mullite whiskers, 1.5-3 parts rare earth composite oxide, and silane coupling agent KH560. 0.3~0.8 parts, sodium polycarboxylate dispersant 0.6~1.2 parts, deionized water 8~15 parts; rare earth composite oxide is composed of La2O3 and CeO2 in a mass ratio of 1:1. The coating has a solid content of 68~75%, pH value of 8.8~9.5, viscosity of 35~50s, particle size D90≤4.5μm, porosity≤8%, and storage stability≥90d. Through the synergistic effect of rare earth-silane dual modification, mullite whisker reinforcement and low-temperature activation of nano-silicon powder, the coating achieves a high-temperature adhesion strength ≥2.2MPa, thermal shock resistance ≥25 cycles, and can be sintered at low temperature with excellent construction performance. It is suitable for various high-temperature working conditions such as electrolytic aluminum and ferroalloy smelting.