35results about How to "Enhanced mesh structure" patented technology

The invention discloses humidity and ultraviolet dual-cured polyurethane woodware coating and a preparation method thereof. A synthesis method includes synthesizing initial polyurethane polymer I, polyurethane pre-polymer II, polyurethane pre-polymer III, polyurethane acrylate oligomer and ultraviolet cured woodware coating. The humidity and ultraviolet dual-cured polyurethane woodware coating is mainly prepared by aliphatic diisocyanate, dihydric alcohol pre-polymer, polyhydroxy acid, epoxy resin and hydroxy acrylic ester and the like, and by adding auxiliaries such as photoinitiators, flatting agents, defoamers, substrate wetting agents and catalysts, the ultraviolet cured woodware coating is prepared. The ultraviolet cured woodware coating can form films and be cured under irradiation of ultraviolet, also can be cured by humidity in the air within 5 hours at the room temperature, and has the advantages of high solid, NCO (isocyanate) group content and adhesion force, fine resistance to chemical corrosion, high film coating hardness and fine storage stability and the like, can be used for irregular coating surfaces, hone finished UV (ultraviolet) paint and UV colored paint and the like where cannot be irradiated by the ultraviolet.

The invention discloses an aluminum-zinc polysilicate composite flocculating agent and application thereof. Sodium silicate solution and excessive sulfuric acid are mixed with each other to prepare polysilicate solution, zinc sulfate and aluminum sulfate solution, polyacrylamide, calcium hydroxide and sodium hypochlorite are sequentially added into the polysilicate solution, and reaction is carried out to obtain the aluminum-zinc polysilicate composite flocculating agent. The aluminum-zinc polysilicate composite flocculating agent and the application have the advantages that the aluminum-zinc polysilicate composite flocculating agent can be applied to the field of water treatment, accordingly, excellent effects of removing colors, turbidity and carbon can be realized, coagulated floc particles are large, the aluminum-zinc polysilicate composite flocculating agent is high in floc settling velocity, excellent net capturing effects can be realized, and the excellent effects of removing the colors and the turbidity can be realized; raw materials for the aluminum-zinc polysilicate composite flocculating agent can come from wide sources, the aluminum-zinc polysilicate composite flocculating agent is easy to prepare and can be widely applied to the field of wastewater from dyeing and printing and papermaking industries and the like and the field of advanced municipal sewage treatment, and the like.

The invention discloses controllable clay and cement seepage-proof reinforcement paste. The controllable clay and cement seepage-proof reinforcement paste is mainly prepared from clay raw stock, cement and water, wherein the clay raw stock is mainly obtained by stirring clay and water. A modifier is added in the controllable clay and cement seepage-proof reinforcement paste; the doping amount of the modifier is 1 to 3 percent; the modifier mainly comprises mineral additives, sulfate and bentonite in a mass ratio of a:b:c; and a:b:c is 5:(5-0):(0-5). The product has the advantages of high stability and water flow dilution resistance, controllable setting time, adjustable strength, high antiseepage performance, low cost, environment friendliness and the like.

The invention discloses an organic-resin-free inorganic zinc silicate shop primer which is composed of a component A and a component B at a weight ratio of 2: 1. The component A comprises the following ingredients in parts by weight: 30 to 60 parts of zinc powder, 15 to 30 parts of ferro-phosphorus powder, 0.5 to 2 parts of gas phase silicon dioxide, 0.2 to 0.6 pat of liquid rheological agent, 5 to 15 part of isopropanol, 5 to 15 parts of methyl isobutyl ketone, and 2 to 8 parts of propylene glycol methyl ether. The component B comprises the following ingredients in parts by weight: 30 to 50 parts of ethyl silicate, 30 to 60 parts of anhydrous alcohol, and 3 to 6 parts of acidified water. The shop primer provided by the invention can improve the temperature tolerance and reduce the water absorptivity of varnish films, is compatible to ballast chamber paints, and meets the requirements listed in the PSPC (performance standard of protective coatings). The shop primer has good rheological effects, so as to prevent gelatination or sedimentation of the zinc slurry during 15-day storage at 50 DEG C. The steel plate coated with the shop primer produces less smoke during welding, so that the construction environment is improved.

The embodiment of the invention discloses a 3D printing modified waterborne polyurethane and a preparation method thereof. The modified waterborne polyurethane comprises the following components in percent by mass: 60-94% of waterborne polyurethane, 5-10% of a silane coupling agent and 1-3% of nanometer silicon dioxide. The preparation method of the modified waterborne polyurethane comprises the following steps: dehydrating polyol, and then carrying out a prepolymerization reaction between the dehydrated polyol and isocyanate to obtain a polyurethane prepolymer; carrying out an end-capping reaction between the polyurethane prepolymer and small molecular diol, adding acetone for diluting and emulsifying, and then adding an amine chain extender for a chain extension reaction to obtain a polyurethane dispersion; removing the acetone in the polyurethane dispersion to obtain the waterborne polyurethane; putting the waterborne polyurethane, the silane coupling agent and the nanometer silicondioxide into a stirring kettle according to a mass ratio, sufficiently mixing, adding an emulsifier, and emulsifying to obtain the modified waterborne polyurethane. Through addition of the nanometersilicon dioxide for modifying the waterborne polyurethane, the pressure resistance is improved and a net structure is increased, so that the 3D printing effect can be enhanced and no collapse exists during 3D printing.

The invention discloses a high-strength high-speed iron waterproof material and a preparation method thereof. The high-strength high-speed iron waterproof material includes component A and component B, and component A is prepared from the following raw materials in parts by weight: polyether polyol 95‑105 parts, 1‑10 parts of plasticizer, 10‑20 parts of bis(4‑isocyanatophenyl) methane, 3‑30 parts of graphene/methanesulfonic acid solution, 5‑50 parts of additives; component B It is prepared from the following raw materials in parts by weight: 50-80 parts of amino-terminated polyether, and 20-40 parts of amine chain extender. The present invention optimizes the type and amount of amino-terminated polyether and amine chain extender suitable for high-strength high-speed iron waterproof materials through reasonable proportioning, and has excellent physical and mechanical properties, temperature resistance, weather resistance, chemical medium resistance and Outstanding wear resistance, convenient construction and high efficiency.

The invention provides clean high-temperature water-base fracturing fluid. The clean high-temperature water-base fracturing fluid comprises components including, by weight, 0.5%-6% of clay stabilizers, 2%-6% of accelerators, 0.01%-0.1% of bactericides, 0.6%-3.0% of alcohol with a low molecular weight, 0.4%-2% of zwitterionic surfactants, 0%-0.5% of polysaccharide compounds and the balance water. The components are mixed with one another to obtain the clean high-temperature water-base fracturing fluid. The clean high-temperature water-base fracturing fluid has the advantages that as proved by indoor evaluation, the temperature resistance of the clean high-temperature water-base fracturing fluid can reach 150 DEG C at least, and accordingly the clean high-temperature water-base fracturing fluid is superior to general clean fracturing fluid systems; the dosage of betaine is 0.4%-2% (a weight ratio) and is far lower than the dosage (2%-5%) of amphoteric surfactants in formulas for conventional fracturing fluid; the clean high-temperature water-base fracturing fluid is convenient to use and operate, excellent in sand suspension ability and superior to common cross-link guar gum and quaternary ammonium salt systems, and cross-link can be omitted.

The invention discloses a high-impact resistance surface functional group treated carbon nanotube modified reactive powder concrete. The high-impact resistance surface functional group treated carbonnanotube modified reactive powder concrete is characterized in that the raw materials of the high-impact resistance surface functional group treated carbon nanotube modified reactive powder concrete comprise cement, functionalized multi-walled carbon nanotubes, silica fume, fly ash, sands, a water reducer and water; and the functionalized multi-walled carbon nanotubes are carboxylated multi-walledcarbon nanotubes or hydroxylated multi-walled carbon nanotubes. The functionalized multi-walled carbon nanotubes can significantly enhance the dynamic compressive strength, dynamic peak strain and impact toughness of the reactive powder concrete. When the strain rate is in a range of 200-800/s and the dosage of the multi-wall carbon nanotubes is 0.25-0.5%, the dynamic compressive strength of concrete can be increased by 71.3%, the dynamic peak strain can be increased by 101. 1%, and the impact toughness can be increased by 100.8%.

The invention relates to a polyurethane modified asphalt waterproof paint and a preparation method thereof. The paint is prepared from a polyurethane prepolymer, 90# petroleum asphalt, modified nano calcium carbonate, vinyl trichlorosilane, a tackifier, n-butyl acetate, citric acid, dibutyltin dilaurate, polyoxyethylene polyoxypropylene ether and fumed silica. The preparation method includes: modifying the 90# petroleum asphalt with the polyurethane prepolymer and modified nano calcium carbonate; then adding vinyl trichlorosilane, citric acid and n-butyl acetate into a reaction kettle, and stirring the substances evenly; then adding fumed silica, the tackifier and dibutyltin dilaurate, and stirring the substances evenly; then adding polyoxyethylene polyoxypropylene ether; further performing stirring till no powder flotation; shearing all the materials in the reaction kettle on a high speed shearing machine again until the 90# petroleum asphalt and other materials are evenly dispersed,thus obtaining the polyurethane modified asphalt waterproof paint. The product provided by the invention has the advantages of high bonding strength, high tensile strength and good dispersibility.

The invention belongs to the field of food processing and particularly relates to a method for producing a health type yeast glucan/surimi composite product capable of removing fishlike smell and enhancing gel. The method comprises the following steps: cleaning a fresh silver carp, removing a head, scales and internal organs, separating meat and then rinsing. The rinsed fish meat is centrifugally drained, chopped into minced fish meat in a food conditioning machine and blended with salt; yeast glucan which is 1-5 percent of the total mass of a compound is added in the minced fish meat; a minced fish meat product is prepared through molding and gelation. Compared with a traditional minced fish meat product, the minced fish meat product made by adopting the method provided by the invention is fine in mouth feeling, high in gel strength and low in fishlike smell, has special smell of the yeast glucan, can significantly increase the appetite and also has a health effect of the yeast glucan; therefore, the added value of the minced fish meat product can be significantly improved.

The invention belongs to the technical field of hydrogel, and particularly relates to a preparation method of magnetic hydrogel. In the preparation process, calcium oxide is taken as a raw material, firstly, the raw material and nanometer titania are heated, then the effect of carbon dioxide is utilized, nano calcium carbonate is formed, and under the effect of an auxiliary agent, the nano calciumcarbonate is continuously combined with the nanometer titania; dispersion performance is added for polyvinylpyrrolidone, then the polyvinylpyrrolidone, ferric chloride and ferrous chloride are mixed,magnetic particles are formed and uniformly distributed on the surfaces of mixed particles at the same time, the crystal form is improved through a guiding agent, and finally, polyacrylamide is formed for wrapping; groups on the surfaces of the particles can be combined with polyacrylamide well, the effect is utilized that the nano calcium carbonate is combined with the nanometer titania, gaps can be formed well for loading the magnetic particles, and by utilizing formation of a nano-substance, the mechanical performance and magnetic performance of the hydrogel can be effectively improved.

The invention relates to the field of preparation of micro-beads, in particular to a method for preparing a medium-density, high-strength and multi-purpose zirconium silicate composite micro-bead by using surplus materials. The formula comprises the raw materials in mass percentage: 48%-88% of zirconium silicate micro-powder surplus material having D50 of smaller than 7 microns discarded in the process of preparing zirconium silicate polishing micro-powder, 9%-49% of aluminum sesquioxide micro-powder surplus material having D50 of smaller than 7 microns discarded in the process of preparing aluminum sesquioxide polishing micro-powder and 3% of lignin. The method comprises the preparation steps of proportioning materials, drily mixing the materials, wetly mixing the materials, ageing the mixture, tightly compacting the mixture, crushing the mixture, screening the mixture, pelletizing the mixture, tightly molding the pelletized balls, selecting balls, drying the balls, screening the balls, sintering the balls, carefully selecting the sintered balls, polishing the balls, cleaning the balls and drying the balls. The prepared micro-bead has a particle size of 63-600 microns and a density of 3.8-4.0 g/cm3 and a sphericity of more than 95%. According to the method for preparing the medium-density, high-strength and multi-purpose zirconium silicate composite micro-bead by using the surplus materials, the industrial residual materials are utilized, the cost is low, the product application is wide, the process is simple, and the method is an innovation in the preparation method of the zirconium silicate composite microbead.

The invention relates to the field of manufacturing of glass ware and in particular relates to highly wear-resistant anti-freezing glass ware and a preparation process thereof. The glass ware is prepared from the following raw materials in parts by weight: 60-75 parts of silica powder, 10-20 parts of sodium carbonate, 3-10 parts of potassium carbonate, 2-6 parts of calcium oxide powder, 15-25 parts of fly ash, 4-8 parts of powdered titanium dioxide, 3-7 parts of boric oxide powder, 4-9 parts of phosphoric acid and 1-6 parts of powdered aluminium. The preparation method comprises the followingsteps: heating, melting, extrusion forming, annealing and tempering, thereby obtaining the highly wear-resistant anti-freezing glass ware. According to the technical scheme provided by the invention,the defects in the prior art that the made glass ware has poor freezing resistance and poor wear resistance can be effectively overcome, and the highly wear-resistant anti-freezing glass ware is worthy of popularization.

The invention discloses a cationic asphalt emulsifier and a preparation method thereof, and a method for preparing an asphalt emulsion by using the cationic asphalt emulsifier. The cationic asphalt emulsifier is formed by taking dimer acid, polyamine, a cationic etherifying agent CHPTAC and paraformaldehyde as raw materials, according to corresponding weight components. The cationic asphalt emulsifier is obtained through amidation reaction and quaternization reaction, the net structure of the asphalt emulsifier is increased through addition of paraformaldehyde, and the bonding strength of asphalt and stone is enhanced. The asphalt emulsifier has excellent emulsifying performance aiming at different types of asphalt, can be widely compatible with various aggregates, is good in wrapping performance, and can adapt to micro-surfacing construction of high-activity stones and high-temperature weather.

The invention belongs to the technical field of building waterproof materials, and particularly relates to a preparation method of a waterproof roll. The preparation method comprises the following steps: heating, stirring and mixing asphalt and turpentine, adding rubber powder to obtain modified asphalt, acidifying the other part of industrial protein powder with acetic acid, dispersing with cornstarch at a high speed to obtain a biomass waterproof adhesive, uniformly mixing polyimide, acrylic fiber waste sweater threads, polystyrene, dioctyl adipate, asphalt latex, epoxy fatty acid butyl ester and other raw materials, extruding and molding the uniformly mixed raw materials, stretching, cooling, and rolling to obtain an anti-aging isolation layer, compounding the anti-aging isolation layer, a waterproof roll base and an isolation film layer from top to bottom, bonding layers by using the biomass waterproof adhesive to form bonding layers, and performing roller pressing rolling after compounding to obtain the waterproof roll. The waterproof roll prepared in the preparation method disclosed by the invention is relatively good in weather resistance, relatively long in use durability,relatively good in anti-leakage effect, not easy to leak water due to water mixing, and wide in application prospect.