135results about How to "Dispersion system is stable" patented technology

The invention discloses a graphene-modified anti-wear water-based glass coating, which comprises a first component and a second component, wherein the first component is a base film forming agent and comprises 20-40% of modified epoxy resin, 0.5-7% of additive, 0.1-5% of graphene, 1-2% of coupling agent and the balance of water in percentage by weight; the second component is an amine curing agent; the first component is mixed with the second component in the using process; and the weight percentage of the second component in a mixture is 3-30%. The coating has the characteristics of high hardness, good wear resistance, high affinity and adhesion with a glass base, water resistance, good ethanol resistance and the like, and meets the green environment-friendly development trend and requirement. In addition, the coating is simple to prepare and convenient to use, and has an important commercial application value.

The invention discloses a preparation method of an ester type viscosity reduction type polycarboxylate superplasticizer. The method comprises the following steps: (1) preparing an esterified monomer; (2) conducting the copolymerization reaction; (3) conducting the neutralization reaction. According to the technical scheme of the preparation method, methyl methacrylate and dimethylaminoethanol, remaining after the preparation of the esterified monomer, are subjected to ester exchange in the same condition of preparing the esterified monomer so as to obtain dimethylaminoethyl methacrylate as a functional monomer. Therefore, the preparation method is cost-saving and simple in operation. In addition, the functional monomer is directly introduced into the copolymerization reaction to react with other cationic monomers. During the polymerization process, anions, cations and tertiary amine groups are attached to polycarboxylic acid molecular chains, so that the surface adsorbability of cement particles can be improved. The electrostatic repulsion effect between cement particles is improved. Not only the ester type viscosity reduction type polycarboxylate superplasticizer is good in anti-sludge effect for sand and gravel materials high in cement content, but also the ester type viscosity reduction type polycarboxylate superplasticizer is good in dispersibility and viscosity-reducing effect.

The invention discloses a preparation method of an ether viscosity reduction type polycarboxylate superplasticizer, which comprises the following steps: (1) copolymerization reaction; and (2) neutralization reaction. According to the preparation method disclosed by the invention, amide groups are connected to superplasticizer molecules, and then a polycarboxylate molecular chain has anion and cation groups, so that adsorbability on the surfaces of cement particles can be increased, the electrostatic repulsion effect between the cement particles can be increased, and a better viscosity reduction effect on concrete is achieved. Moreover, the amide groups are hydrolyzed under alkaline conditions so as to release potential carboxyl groups again, thereby being favorable for improving the dispersibility and slump retentivity of the superplasticizer and realizing high adaptability to cement of different varieties.

The invention discloses aqueous polyurethane, and a preparation method and application thereof. The preparation method comprises: 1) dissolving isocyanate, polyethenoxy ether and a catalyst in a solvent, reacting at 45-95 DEG C for 0.5-3 h to obtain a polyurethane prepolymer, wherein isocyanate is diisocyanate and / or polyisocyanate, polyethenoxy ether is polyether with a single hydroxyl group, the catalyst is triethylenediamine, stannous octoate or dibutyltin dilaurate, and the solvent is one or more of acetone, ethyl acetate, toluene and cyclohexane; 2) reacting the polyurethane prepolymer with a compound containing two or more hydroxyl groups or amino groups, replenishing the solvent of the step 1) to a solid content of 50%-80%, and keeping the reaction until the content of isocyanate is zero, wherein the compound containing two or more hydroxyl groups or amino groups is one or more of a diol, a triol, a dihydric phenol and a diamine; and 3) removing the solvent. The aqueous polyurethane provided by the invention is low in surface tension and good in wetting performance; and after prepared, the aqueous polyurethane can be adsorbed by the surface of a pigment / filling material, helps to prevent the pigment / filling material from flocculating and helps the pigment / filling material to form a stable disperse system.

The invention discloses a water-based electrothermal coating and a preparation method of the water-based electrothermal coating. The coating comprises a water-based dispersion containing a matrix resin, nickel coated carbon nanotube composite powder and auxiliary materials which can be selectively added, wherein the composite powder comprises a carbon nanotube and nickel coated on the carbon nanotube. The preparation method of the water-based electrothermal coating comprises the following steps: the surface of a carboxylated carbon nanotube is subjected to the adsorption of nickel ions, and the nickel ions are reduced to a nickel elementary substance to be served as a nucleation core, chemical nickel-plating is carried out to form the nickel coated carbon nanotube composite powder, and then the composite powder is mixed with the water-based dispersion containing the matrix resin and ground to obtain a composite dispersion paste, and the composite dispersion paste is further compounded with the other auxiliaries to prepare the electrothermal coating. According to the invention, the contact resistance of the original carbon nanotube network can be greatly reduced, so that the coating has the advantages of being low in resistance, high in electrothermal conversion efficiency and the like, is suitable for being used as various electrothermal coatings driven by low voltage, and further has convenience in construction, safety and environmental protection and wide application prospects.

The invention discloses water-base scaling powder and a preparation method and application thereof. The water-base scaling powder is prepared from, by mass, 2.0-4.% of water-soluble rosin resin, 4.5-7.0% of formulated organic acid, 0.1-0.4% of formulated surfactant, 4-8% of organic solvent, 0.1-0.3% of other additives and the balance deionized water. On one hand, the water-base scaling powder is completely suitable for a wave-soldering welding technology, and has the advantages that the weldability is high, the tin penetration property is excellent, postwelding residues are few on the plate surface, the surface insulation resistance is extremely high and the water-base scaling powder is easy to clean; on the other hand, the water-base scaling powder is mild in smell, and in the welding process, the scaling powder is low in smog, high in wettability, free of flashing point and safe to use, and the affinity of the scaling powder is good for water. The preparation method is environmentally friendly and safe, harmless to human body and free of flashing point, the technological conditions are easy to control, and the properties of the prepared water-base scaling powder are stable.

The invention discloses a conductive plugging slurry and a preparation method and application thereof. The conductive plugging slurry comprises the following components in mass percentage: 0.5 to 5% of graphene, 50 to 80% of metal conductive powder, 10 to 30% of resin, 1 to 5% of curing agents, 0.1 to 3% of auxiliaries, and 1 to 10% of solvents. In addition, the preparation method includes: preparing a graphene conductive slurry; preparing a metal powder conductive slurry, and mixing the graphene conductive slurry and the metal powder conductive slurry. The conductive plugging slurry has the uniform and stable slurry dispersion system; and the storage time is long. After solidification, the formed conductive plugging solidified film has stable conductivity, high-temperature-resistant and heat-resistant characteristics, and high stability; and a breaking phenomenon is avoided.

The invention relates to a water-based wetting dispersant which comprises sulfonate, sulfate and polycarboxylate, wherein weight percentage of sulfonate to sulfate is 5-15%: 85-95%, weight percentage of sulfate to polycarboxylate is 10-30%: 70-90%, sulfate is one selected from the group consisting of sodium dodecyl benzene sulfonate, sodium butylnaphthalenesulfonate and sodium sulfanilate, sulfate is one selected from the group consisting of sodium dodecyl sulfate, sodium alcohol ether sulfate and sodium amine ether sulfate, and polycarboxylate is one selected from the group consisting of polyacrylic acid, polymethacrylic acid and maleic-acrylic acid. The invention is advantaged in that the anionic water-based wetting dispersant with a plurality of surfactants as main components is brought forward and has a stable structure, good dissolvability in water and good wetting dispersibility.

The invention discloses a preparation method of a high-fixation-rate nano liquid disperse dye. The method comprises the following steps of: mixing a grinding aid with a certain amount of deionized water to fully swell the grinding aid; adding a disperse dye, propylene glycol, a basic dispersing agent and a wetting agent, carrying out pre-grinding; and adding the residual deionized water; adding ahyperbranched dispersant into the ground system, and perform further grinding; carrying out suction filtration by using a filter screen; adding an anti-flocculating agent and a preservative into a filtrate; and carrying out high-speed shearing emulsification to obtain the high-fixation-rate nano liquid disperse dye. The liquid disperse dye is applied to the printing process of polyester fiber fabric; the fixation rate of the liquid disperse dye on the fabric can be increased; color flooding on the surface of the fabric is prevented; the effect of wash-free printing is achieved; the printed fabric can be endowed with good wearing fastness; the soft hand feeling of the fabric can be guaranteed; and the discharge amount of printing and dyeing wastewater can be reduced.

The invention discloses uniconazole water dispersible granules and a preparation method thereof. The uniconazole water dispersible granules comprises the following raw materials by mass parts: 0.1-90of uniconazole, 1-10 of moistening agent, 1-10 of dispersant agent, 2-20 of disintergrants and 1-10 of binder. The preparation method is as follows: blending all the raw materials forming the uniconazole water dispersible granules, crushing by ultrafine air flow, pelleting, drying and sieving to obtain the uniconazole water dispersible granules. The uniconazole water dispersible granules overcomethe defects of the powder, is safe to environment, people and livestock and other beneficial living beings, does not easily generate chemical disorder, is easily controlled in release and orientation,does not have dust, has fast speed of granule disintegration and is not polluted by packaging, has good storage stability and simple preparation technique and is suitable for industrialization production.

The invention relates to a nano-scale multifunctional liquid premixed feed and a preparation method thereof. The feed is stable, uniform and transparent liquid and is prepared by emulsifying and stabilizing various active ingredients with a surfactant and a cosurfactant in groups. The preparation process mainly has the following innovations that: the characteristic of the action among the surfactant, an emulsifying agent, a stabilizing agent, an inorganic salt and the active ingredients is skillfully utilized to effectively disperse three types of active ingredients consisting of vitamin, natural pigment and amino acid which are difficult to dissolve together in the same system; and the grains of the colloid have nano-scale sizes ranging from 20 to 60nm. The premixed feed is suitable to be used in the breeding of livestock and poultry and has the effects of meeting an emergency, preventing diseases, keeping health, fattening, effectively improving the intrinsic quality and exterior quality of the animal products and the like.

The invention relates to the technical field of modification of flame retardant, and provides whitened red phosphorus with high flame-retardant efficiency and a preparation method of the whitened redphosphorus. The preparation method comprises the steps of: adding penetrant and emulsifier into water to form a first solution, adding red phosphorus and an aluminum salt into the first solution to form a second solution, heating the second solution to prepare an emulsifying dispersion system, dissolving sodium hypophosphite in water to obtain a sodium hypophosphite solution, and adding the sodiumhypophosphite solution into the emulsifying dispersion system so as to obtain a third solution and prepare a first coating layer at the moment; adding aluminum sulfate octadecahydrate into water to obtain an aluminum sulfate solution, adding sodium carbonate decahydrate into water to form a sodium carbonate solution, adding the aluminum sulfate solution and sodium carbonate solution into the third solution to form a fourth solution, and conducting aging to obtain a second coating layer; adding a formaldehyde solution into melamine to obtain a melamine-formaldehyde resin prepolymer; and addingrutile titanium dioxide and the melamine-formaldehyde resin prepolymer into the fourth solution to form a fifth solution to obtain the whitened coated red phosphorus. The whitened red phosphorus hasa low addition amount, high flame-retardant efficiency, high whiteness, good moisture absorption and good oxidation resistance.

The invention belongs to the field of anti-counterfeiting printing inks, and in particular relates to an anti-counterfeiting water-based irreversible temperature-changing ink and a preparation method thereof. The ink comprises the following raw materials in parts by weight: 40-50 parts of water-based acrylic resin; 20-50 parts of diacetylene glycol irreversible color pigments 30 parts; 1-2 parts of emulsifier; 5-10 parts of co-solvent; 2-5 parts of dispersant; 0.1-0.4 parts of defoamer; 20-30 parts of water. The preparation method is simple, wherein a static mixer is used, and the prepared ink is more stable. The main solvent of the anti-counterfeiting water-based irreversible temperature-changing ink provided by the invention is water, and a small amount of non-toxic organic co-solvent is used. It is an environmentally friendly ink and has a better working environment; the ink provided by the invention is in a suitable temperature range ( For example, 50-70°C) can irreversibly change from blue to red, which can prevent criminals from tearing off the label on the genuine product by heating and then using it on the counterfeit product, which has a good anti-counterfeiting effect.