34 results about "Polysol solution" patented technology

The present invention discloses a silicon sol adhesive modified by using high polymer and its preparation method. Its composition comprises alkaline silicon sol containing 20-30%, SiO2 and PVA whose content is less than [(32-100XSiO2%) / 320]X100%. Its preparation method includes: a. preparing PVA aqueous solution; b. preparing alkaline silicon sol solution; and c. mixing said two solution uniformly, in which after the alkaline silicon sol solution is prepared or after the two solutions are mixed uniformly its pH value must be regulated. Said silicon sol adhesive can accelerate drying speed when it is used in investment casting industry, and can raise the normal temp. strength of pattern shell in the investment casting, and can reduce retained strength.

Disclosed is an allicin microcapsule and its preparation method, wherein garlicin and starch are used as the core, hydrosol is used as the inner layer membrane, the grease collosol is an outer layer membrane structure, the garlicin, starch, hydrosol and grease collosol accmounts to 0.1-50%, 10-90% and 0.5-10% of the total product weight. The preparing process consists of attaching the garlicin onto the starch carrier, coating a layer of hydrosol solution onto the granule surface, forming an inner layer hydrosol covering film through drying and dehydration, than coating a layer of grease collosol solution, drying and removing organic solvent to form the outer layer collosol covering film.

The invention discloses a preparation method of a water-based nano ceramic composite coating. The water-based nano ceramic composite coating is prepared from the following components in parts by mass: 5 to 15 percent of water-based acrylic polymer, 5 to 20 percent of silica sol solution, 23 to 40 percent of siloxane, 2 to 15 percent of alcohols, 10 to 15 percent of deionized water and a trace amount of metal oxide. The preparation method of the casing comprises the following steps: stirring at normal temperature and normal pressure for 20 to 60 minutes by a reactor, and generating reaction to form composite resin; then adding 10 to 40 percent of pigment and 0.1 to 5 percent of weak acid; stirring at the normal temperature and the normal pressure for 5 to 60 minutes and curing, thereby finishing the preparation of the coating.

The invention discloses a preparation method of high-purity large-particle-size silica sol, which belongs to the technical field of silica sol preparation. The specific preparation method comprises the following steps of mixing an acidic silica sol solution with a pH value of 2-3 with polyethylene glycol 2000-10000, adjusting the pH value to 8-9.5, and heating and boiling to obtain sol crystal grains, adding acid activated resin, washing the resin until the pH value is 3.0-4.5, adding an aluminum salt modifier and water glass, and carrying out ion exchange reaction on the water glass to obtainaluminum modified silicic acid, and adding aluminum modified silicic acid into the sol crystal grains, adding an alkaline solution to adjust the pH value to 9.5-10.5, synthesizing while performing ultrafiltration, and heating to synthesize the high-purity large-particle-size silica sol. The acidic silica sol is subjected to hydroxylation reaction, so that the gel is aggregated to form a large-particle silica sol matrix, the water glass is used as a raw material, the aluminum-modified active silicic acid is prepared by adopting an ion exchange method, ultrafiltration and synthesis are carriedout simultaneously, the particle size is increased quickly, the energy consumption is low, the synthesis period is short, the production efficiency is improved, and the polishing requirements of noveldevices in electronic industry can be met.

The invention discloses a preparation method of an oil-resistant self-cleaning coating, and relates to the technical field of new materials. The method comprises the following steps: performing ultrasonic treatment on an electrostatic spinning solution, performing secondary ultrasonic treatment on fibers sprayed from a syringe needle before reaching a negative electrode during electrostatic spinning, and enabling the negative electrode to be an aluminum alloy plate during electrostatic spinning, so that the fibers are directly generated on the aluminum alloy plate to form a crossed three-dimensional net-shaped coating; water on the surface of the coating falls off to take away part of oil stains, and the rest oil stains fall off automatically, so that the self-cleaning effect is achieved; and the aluminum alloy with the fiber prepared on the surface is soaked twice, the aluminum alloy is soaked in a foamed polyvinyl alcohol solution for the first time, the aluminum alloy is soaked in a polyvinyl alcohol silica sol solution for the second time and heated, the coating is firmly bonded to the surface of the aluminum alloy, and meanwhile the service life is prolonged.

Provided are low-density colored silica particles having a porous structure, and a preparation method thereof. The preparation method comprises: dropwise adding a sodium silicate solution to a sulfuric acid solution to obtain an acidic silica sol solution; injecting the sulfuric acid solution and hydroxyethyl cellulose into a reaction tank, then adding the acidic silica sol solution and sodium silicate solution simultaneously; after the acidic silica sol solution is added dropwise, continuing to add the sodium silicate solution dropwise until the pH value is 3–4; adding pigment and then adding sodium silicate solution dropwise until a final pH value is reached, then stirring until the system precipitates a gel; adding ethanol and glycerol to the gel and stirring; pressure-filtering, drying, crushing, washing, and drying the gel to obtain colored silica particles. The silica particles have good suspension performance and adsorption performance, and mild friction performance, and are suitable for application in everyday products such as shower gel, facial cleanser, and toothpaste, and thus have good prospects for application.