32results about How to "High thixotropy" patented technology

The invention provides a heatproof oil-resistant phenolic epoxy static anticorrosive paint and a preparation method thereof, belonging to the field of paints. The paint comprises a component A and a component B. The component A comprises, by mass, 15 to 21% of a phenolic epoxy resin, 2 to 8% of a modified resin, 0.1 to 0.3% of an antifoaming agent, 0.2 to 0.5% of a coupling agent, 0.5 to 0.7% of a thixotropic agent, 12 to 17% of conductive mica powder, 7 to 12% of ferrophosphorous powder, 1 to 5% of titanium dioxide, 10 to 17% of talcum powder, 12 to 18% of feldspar powder and 15 to 20% of a solvent. The component B comprises, by mass, 65 to 75% of a curing agent and 25 to 35% of a solvent. The paint has effectively improved heat resistance and can resist a temperature as high as 200 DEG C; the paint has an excellent anticorrosive effect and excellent tolerance to acid, alkali, salt, oil and chemicals and is capable of enhancing an anti-rust effect and effectively reducing cost while providing conductive performance.

The invention discloses a suspended seed coating for preventing and curing corn smut and a preparation method thereof. The suspended seed coating for preventing and curing corn smut is characterized by being prepared from the following raw materials in percentage by weight: 3.0-7.0% of imidacloprid, 7.0-12.0% of thiram, 0.2-0.6% of diniconazole, 1.5-2.5% of wetting dispersant, 0.5-1.5% of thickening agent, 2.0-6.0% of antifreezing agent, 0.1-0.3% of preservative, 2.0-6.0% of film-forming agent, 3.0-7.0% of warning colouration, 1.0-5.0% of microelements and the balance of water. The suspended seed coating disclosed by the invention is free of harmful effect on the emergence of seedlings and growth of corn, medicine is wrapped around seeds in a concentrated manner, and the medicine is slowly released. The average control effect for corn underground insects is 77.5%-83.5%, the control effect for head smut is 81.7%-88.4%, and the average growth rate is 16.4%-22.6%.

The invention belongs to the field of building materials, and in particular relates to an admixture for improving the anti-cracking and thixotropic properties of super-high-rise pumped concrete. The admixture is composed of silica fume, fly ash microbeads, superfine limestone powder, modified montmorillonite and microcrystalline cellulose modified superabsorbent resin fiber. Based on the theory of close packing of particles, the invention uses silica fume, fly ash microbeads and ultra-fine limestone powder to optimize the particle composition of super-high-rise pumped concrete cementitious materials, and utilizes the strong water absorption and slow penetration of modified montmorillonite to release water Function and microcrystalline cellulose modified superabsorbent resin fiber surface hydrophilic and super-adsorption characteristics, improve the thixotropic performance and crack resistance of concrete, reduce the risk of concrete pumping pipe plugging and construction difficulty.

The application relates to gypsum decorative materials, in particular to a high-strength plastic water-resistant gypsum decorative material and a preparation method thereof. In parts by weight, the raw materials for preparing the high-strength plastic water-resistant gypsum decorative material include: 40-60 parts of high-strength gypsum, 10-30 parts of heavy calcium carbonate, 5-15 parts of vitrified microbeads, 0.05-0.1 part of water-repellent agent, Water-retaining thickener 0.05-0.1 part, hydrophobic redispersible latex powder 0.5-1.5 part, gypsum retarder 0.05-0.13 part, cream dispersant 0.05-0.1 part, fumed silica 0.1-0.5 part, hydroxypropyl 0.1-0.2 parts of methyl cellulose ether; the average particle diameter of the vitrified microspheres is 70-120 mesh. The high-strength plastic water-resistant gypsum decorative material provided by this application has small shrinkage, adjustable opening time for construction, high thixotropy, good adhesion, good water resistance, no foaming, no cracking, no powder falling after immersion, and high strength. .

The invention belongs to the technical field of construction materials, and particularly relates to a low-temperature repairing material for a high-speed rail base concrete in a severe cold region and application of the concrete low-temperature repairing material. The low-temperature repairing material comprises the following components: 425 ordinary Portland cement, 425 sulphoaluminate cement, 725 sulphoaluminate cement, a waterproof admixture, rubber powder, an aggregate, a water reducer, a construction improver, a water-retaining agent, an early strength agent, a nano multifunctional water repellent agent, and PP (polypropylene) fiber. The low-temperature repairing material for the high-speed rail base concrete in the severe cold region, provided by the invention, has a repairing construction time meeting a skylight time requirement of a high-speed rail, has compression strength after completion of hydration matching with that of the base concrete, is high in tensile bond strength with the base concrete, is slightly expanded and strong in anti-freezing circulation capability at -40 DEG C, can avoid secondary detachment, and well meets requirements on the low-temperature repairing material for the high-speed rail base concrete in the severe cold region.

The present invention provides a thixotropic two-component silicone rubber foam sealant, which is characterized in that it includes component A and component B, and the ratio of component A and component B is A:B=0.5~5:1 The mass ratio is mixed; wherein, the A component includes by weight: 100 parts of liquid silicone rubber, 0.5-5 parts of foaming agent, 1-5 parts of thixotropic agent, 15-35 parts of flame retardant, and 0.25-5 parts of catalyst 2 parts; wherein, the B component includes by weight: 100 parts of liquid silicone rubber, 15-25 parts of reinforcing agent, 1-5 parts of cross-linking agent, and 0.5-2 parts of inhibitor.

The invention relates to machine-spraying-type plastering gypsum and a preparation technology thereof and belongs to the technical field of building materials. The machine-spraying-type plastering gypsum is characterized by being prepared from the following raw materials: 200-400 parts of gypsum, 10-60 parts of cement, 520-650 parts of fine aggregate, 80-160 parts of heavy calcium powder, 2-4 parts of redispersible emulsion powder, 2-4 parts of hydroxypropyl methyl cellulose ether, 0.15-0.25 part of an air entraining agent, 5-10 parts of expanded perlite, 0.3-0.8 part of a gypsum retarder and 200-300 parts of water. The machine-spraying-type plastering gypsum is applicable to being directly sprayed to a wall surface by adopting a mortar spraying machine, both time and labour are saved, construction efficiency can be improved, and cost is reduced; bonding performance with the wall surface is good, rebounce is not caused, anti-sagging performance is good, both bonding strength and compressive strength can meet requirements, and cracking of a wall body can be reduced; and usage amount of gypsum is low, and cost can be effectively reduced.

The invention discloses cement paste comprising cement, water and an admixture, wherein the admixture comprises a biogum tackifier and a polycarboxylate superplasticizer. The invention simultaneously discloses a preparation method of the cement paste. The method comprises the following processing steps of: 1) adding and dissolving the admixture containing the iogum tackifier and the polycarboxylate superplasticizer in the first batch of water, so as to form an admixture solution; 2) mixing the cement with second batch of water, and agitating, so as to prepare cement slurry; 3) mixing the cement slurry with the admixture solution, agitating and evenly mixing to obtain the cement paste. The cement paste disclosed by the invention has excellent performances of high thixotropy and water resistance, and is suitable for grouting in macropore stratums such as karst holes, wide fissures of rock mass and rockfills.