72results about How to "Good dispersion" patented technology

The invention provides a catheter with an antibacterial coating. The catheter consists of a guide part and a handheld part. According to the catheter with the antibacterial coating, multiple shaping rings are transversely and horizontally arranged on the outer wall of a guide pipe, so that the catheter has good elasticity and rigidity, and the elasticity is gradually reduced but the rigidity is gradually enhanced along with the increase of the length of the guide pipe; and an oval soft head part is arranged at the upper part of the guide pipe, so that the guide pipe is easy to steer, has enough longitudinal thrust, and can easily enter bent and blocked parts. A plurality of flow guide lines are vertically arranged on the inner wall of the guide pipe in the longitudinal direction, and the antibacterial effect can be achieved by attaching antibacterial materials to the flow guide lines while drainage is performed.

The invention discloses a preparation method of nano silver with a controllable particle size. The preparation method comprises the following steps that 1), soluble silver salt is dissolved in dihydric alcohol to obtain a solution A; 2), a dispersing agent and a reducing agent are mixed and dissolved in the dihydric alcohol, and the pH value is adjusted to be 2-8 by using a pH regulator to obtaina solution B; 3), under the condition of 100-180 DEG C, the solution A is added into the stirred solution B at a feeding rate of 4-10 mL/min to obtain a solution C; and 4), the solution C is cooled and separated to prepare the nano silver. The preparation method adopts a non-toxic, pollution-free, low-energy-consumption and easy-to-operate liquid phase reduction method to obtain the spherical nanosilver with excellent dispersity and controllable and uniform particle size, and the method is simple, rapid and efficient.

The invention relates to a modified production method for nano silicon dioxide for special rubber, relating to the technical field of inorganic silicon material modification. The method is characterized by comprising the following steps of taking sodium silicate and sulfuric acid as the raw material; firstly preparing silica gel in a reaction kettle, wherein the temperature is 20-180 DEG C, and the reaction time is 1-12 hours; adding a coupling reagent KH590 or SI69 which are taken as a modifier; simultaneously adding isobutanol and reacting for 1-8 hours continuously; washing sulfate radical particles, chlorine particles and other particles with deionized water; drying for 8 hours at 80-900 DEG C, thus obtaining the modified hydrophobic nano silicon dioxide powder body. According to the method, the silicon dioxide can be well combined with bond bases and dispersed for application in the rubber, so that the nano silicon dioxide has wider application fields; an in situ modification method for nano silicon dioxide, which has better applicability, is provided, so that nano silicon dioxide powder body with better dispersibility is prepared.

The invention discloses the preparation methods of perovskite LnCrO3 nanomaterial powder and LnAlO3 nanomaterial powder and in particular relates to a process which adopts the novel thermal decomposition method of organic complex precursor to synthetize perovskite LnCrO3 nanometer powder and LnAlO3 nanometer powder. The preparation method comprises the following steps: in the preparation process of the precursor, using La(NO3)3 and M(NO3)3 (M=Cr, Al) to prepare a certain concentration of mixed solution according to the stoichiometric proportion, then adding ethylene glycol and nitric acid in the mixed solution, using nitric acid as oxidant to perform a series of oxidation, condensation and complex reactions under solvothermal condition and obtain the spherical organic complex precursor with uniform size; and roasting the precursor at 700-1200 DEG C to prepare the perovskite LnCrO3 nanomaterial powder and LnAlO3 nanomaterial powder. The preparation method of the invention has the advantages of stable production process, uniform product and good quality.

The invention discloses an all-insulation pouring starting end bus, and relates to the technical field of power equipment. The bus comprises conductors, a pouring shell and branch connecting bars, thenumber of the branch connecting bars is consistent with the number of the conductors. One end of each conductor is positioned outside the pouring shell, and the other end of the conductor extends into the pouring shell and is connected with the end, located in the pouring shell, of the corresponding branch connecting bar, and the pouring shell is prepared from, by mass, 10% of quartz powder, 7% of light calcium carbonate, 5% of high-temperature aluminum oxide, 15% of refined calcined kaolin, 60% of resin and 3% of curing agent. The pouring shell is formed by accurately preparing and pouring various inert inorganic minerals according to strict process requirements, the tensile strength, the elongation at break, the chemical resistance and the electrical property of the pouring shell are improved, the chemical resistance is improved, the water absorption is reduced, and the shock resistance is improved.

The invention discloses spherical nano-porous hydroxylapatite prepared through shells and a preparation method thereof, and belongs to the technical field of material preparation. According to the hydroxylapatite prepared through the method, the hydroxylapatite is in a spherical shape, the diameter is 4-5 micrometers, the dispersity is good, the specific surface area is 270 cm<2>/g, the average pore diameter is 18 nm, carbonate radicals are contained, the components are similar to those of hydroxylapatite in the bones, and the biocompatibility is good. The preparation method comprises the following steps that the shells are washed, dried and ground, acetic acid with the concentration of 0.1 g/mL is added to fully react with the ground shells, an H3PO4 solution is dropwise added into a prepared calcium acetate solution, trisodium citrate is added, urea is added after reacting under stirring are performed, a prepared solution is stirred to be subjected to a reaction for 5 min in a water bath at the temperature of 80 DEG C-90 DEG C, standing is performed until precipitates occur, and the obtained precipitates are filtered, washed, dried and then collected. According to the method, shell powder does not need to be calcined, the reaction time is short, the pH does not need to be adjusted, operation is easy, the repeatability is good, the raw materials are easy to obtain, and not only is waste utilization achieved, but also energy conservation and emission reduction are facilitated.

The invention discloses a novel intumescent flame-retardant system (IFR) mainly used for flame-retardant asphalt and a preparation method thereof. The novel intumescent flame-retardant system is prepared by fully mixing poly ammonium polyphosphate, melamine and a pentaerythritol polyether dispersing agent according to a ratio of 2: 1: 1 under certain conditions. The intumescent flame-retardant system (IFR) used for flame-retardant asphalt provided by the invention mainly modifies pentaerythritol used in the prior art, so the phenomenon of moisture absorption caused by richness of pentaerythritol in -OH is overcome, and weatherability of an asphalt mixture is strengthened; meanwhile, the modified pentaerythritol polyether has significant dispersity and strengthens storage stability of the asphalt mixture.

The invention provides water-based aramid coating slurry, water-based aramid/ceramic mixed coating liquid, preparation methods and application thereof. The water-based aramid coating slurry comprisesaramid, an acrylate adhesive, a fluorocarbon surfactant, a cellulose ether dispersant, a hydrophilic emulsifier and water. The water-based aramid/ceramic mixed coating liquid is obtained by mixing thewater-based aramid coating slurry with ceramic coating slurry. The ceramic coating slurry comprises aluminum oxide, a dispersant, an adhesion agent, a wetting agent and water. The water-based aramid/ceramic mixed coating liquid can be used for preparing a lithium ion battery separator. The lithium ion battery separator prepared by the water-based aramid/ceramic mixed coating liquid combines the advantages of the traditional oily aramid coating and the water-based ceramic coating, and has excellent performances such as high temperature resistance, high strength, good gas permeability, excellent wettability and strong adhesive force; the water immersion treatment is not needed in the coating process; the coating technology is simple; the environment is not polluted in the coating process, and the ceramic dropping phenomenon is effectively improved.

The invention discloses water-based anticorrosive paint. Thepaint comprises the following raw materials in parts by weight: 45-55 parts of modified water-based epoxy resin, 15-25 parts of hybrid ceramic powder, 5-10 parts of starch assistant, 1-5 parts of silk mica powder, 5-15 parts of water-based ethanol and 1-5 parts of crosslinking agent divinyl benzene. The raw materials are strictly selected, raw materials with corrosivity are eliminated; the adopted water-borne epoxy resin is modified and crosslinked with the raw materials such as the hybrid ceramic powder and the starch assistant underthe action of the crosslinking agent divinyl benzene, a formed paint system is a neutral system, meanwhile, the structural system of the paint is stable, The corrosion resistance of the paint can beobviously improved.

The invention relates to waterborne environment-friendly varnish for tempered glass and belongs to the field of new materials. The waterborne environment-friendly varnish for tempered glass is made from, by mass, 1-95% of water, 0-95% of an environment-friendly solvent, 0.1-5% of a film-forming agent, 0.1-2% of a defoaming agent, 0.1-5% of a wetting dispersant, 0.1-2% of a leveling agent, 2-30% ofa binder, and 1-10% of an anti-settling agent. The waterborne environment-friendly varnish for tempered glass uses water as a basic solvent and accordingly is economical and environmentally friendly;the waterborne environment-friendly varnish for tempered glass has good dispersion with inorganic glass pigments; a film of the waterborne environment-friendly varnish for tempered glass is flat andbright, is tolerant to low temperature weathers and good in leveling property; equipment, tools, containers, a ground, clothes and otherness in contact with the varnish can be washed with tap water.

The invention relates to an antibacterial and antiviral toilet lid and a preparation method thereof. The antibacterial and antiviral toilet lid is prepared from the following components in parts by weight: 60-70 parts of a resin material, 10-20 parts of a flame-retardant filler, 1.0-5.0 parts of a dispersing agent, 1.0-2.0 parts of an antioxidant and 0.5-1.0 part of a modified antibacterial and antiviral treatment agent, wherein the modified antibacterial and antiviral treatment agent adopts an organic silicon modified photocatalyst, and the organic silicon modified photocatalyst is obtained by modifying an inorganic photocatalyst antibacterial agent with an organic silicon release agent. In addition, the invention also discloses a preparation method of the antibacterial and antiviral toilet lid. On the premise of ensuring the antibacterial, antiviral and anti-mite effects of the toilet lid, the use amount of the antibacterial agent is greatly reduced.

The invention relates to a grifola frondosa cookie and a making method thereof, and belongs to the technical field of food processing. The made grifola frondosa cookie comprises, by weight, 350 parts to 400 parts of low gluten wheat flour, 70 parts to 100 parts of grifola frondosa whole powder, 20 parts to 30 parts of chufa powder, 25 parts to 35 parts of chickpea powder, 150 parts to 180 parts of safflower seed oil, 50 parts to 80 parts of butter, 80 parts to 100 parts of white granulated sugar, 150 parts to 200 parts of yolk and 100 parts to 120 parts of unsalted butter. According to the grifola frondosa cookie and the making method, as the raw material mixing sequence is adjusted, the nutrition and the taste of grifola frondosa are kept to the maximum degree in the made grifola frondosa cookie, the cookie is rich in nutrition, fragile in taste, good in quality, high in forming ratio and long in holding time, a person does not get inflamed and does not feel greasy after eating the cookie, the post-harvesting additional value of the grifola frondosa is increased, and transformation and upgrading of the grifola frondosa industry are promoted.