The main component of silica gel, what is the chemical composition of silica gel

The main component of silica gel is silica, which is chemically stable and does not burn. Silica gel is an amorphous silica, and the dust content of the workshop should be controlled not more than 10 mg cubic meters, and the exhaust should be strengthened, and masks should be worn during operation. Silica gel has a strong adsorption capacity and can have a drying effect on people, so you should wear good work clothes when operating.

If silicone gets into the eye, rinse with plenty of water and see a doctor as soon as possible**. Blue silica gel contains a small amount of cobalt chloride, which is potentially toxic, so it should be avoided from contact with food and inhalation, and if poisoning occurs, you should immediately consult a doctor**. Silica gel adsorbs water vapor or other organic substances in the medium during use, and the adsorption capacity is reduced, and it can be reused after regeneration.

Safety term: S22 do not breathe dustNever inhale dust. ”

Silicone glue-mixture (denzione oxime silicone): terminal hydroxy dimethicone + silicon dioxide + methyl tributanone oxime silane + vinyl tributanone oxime silane.

Silicone is also called silicone rubber.

Silicic acid gel, its chemical formula is MSIO2·NH2O. Silica gel is a highly active adsorption material, is an amorphous material, not a plastic, silica gel in the production process of the material will be relatively superior, but the cost is lower than the cost of plastic. It is neither naturally grown nor artificially refined, but a special synthetic rubber, the main component of which is silica.

The appearance of silica gel is transparent or milky white, and the inside has nano-scale voids and pores, this microporous structure makes it an adsorption material with good adsorption function, in the air flow of 60% humidity, the moisture contained in the silica gel absorption gas can reach 50% of its own mass, so it is usually used for dry high humidity gas adsorption. In addition, the silicone material is also extremely resistant to high temperatures, aging, and can be used for a long time under natural conditions.

Small silicone, the use is not ordinary, how much in life, it is not difficult to find that all walks of life have its figure.

Silicone was invented to adsorb vapors and gases from gas masks. This is because of the chemical properties of silica gel.

Stable and insoluble in water, non-toxic and tasteless, except for strong acids and hydrofluoric acid.

It does not react with any chemicals.

Some people may ask: since the silicone material is non-toxic and odorless, why does the silicone material product I get in my hands still smell so much? This really can't be carried by silicone.

In order to achieve their own requirements for softness, elasticity, and design requirements, each manufacturer will add some other formulas for synthesis in addition to using silicone as the base material, which also causes odor. For example, common silicone phone cases, etc.

Traditionally, we divide silicone into organic silicone and inorganic silicone. Inorganic silicone can be used alone and has strong mechanical properties.

Its essence is silicic acid, which is generally used to adsorb moisture in the air and play a drying role, such as the desiccant used in food bags.

The surface of the silicone is smooth and flexible.

It is also better, it has a certain corrosion resistance and insulation, and is usually used between mechanical parts to play the role of buffering and sealing, and many toys are made of silicone materials.

Silica gel] chemical formula SiO2·XH2O or MSIO2·NH2O, also known as silicone oxide gel or silicic acid gel. Silica gel into colorless transparent or milky white particles. Usually contains about 3 7 moisture

Has a porous structure. It has strong adsorption, and the moisture absorption can reach about 40. It is mainly used for gas drying, gas absorption, liquid dehydration, catalyst, catalyst carrier and used as gas chromatography analysis reagent, thin layer chromatography analysis reagent, column chromatography packing material.

In order to indicate the degree of water absorption, the market's most advanced color-changing silica gel is a desiccant prepared by soaking the silicic acid gel with cobalt chloride solution, drying and activation. It is made by reacting sodium silicate solution (water glass) with hydrochloric acid or dilute sulfuric acid, and is made by gelling, washing, drying and drying.

The main component of silica sol is silicon dioxide. Silica sol is a nano-scale dispersion of silica particles in water or solvent, odorless, non-toxic, there are different ways to prepare silica sol, the most commonly used methods are ion exchange method, silica powder one-step hydrolysis method, silane hydrolysis method, etc., silica sol can be used as a variety of refractory binders, with strong adhesion, high temperature resistance and other characteristics, used in the coating industry, can make the coating firm, but also anti-fouling and dustproof, anti-aging, fire prevention, etc.

<>1. Silica gel alias: silicate gel, which is a highly active adsorption material and an amorphous substance. The main component of silica gel is silica, which is chemically stable and does not burn.

2. Chemical formula XSIO2·YH2O. Clear or milky granular solids. It has an open porous structure, strong adsorption, and can adsorb a variety of substances.

Dilute sulfuric acid (or hydrochloric acid) is added to the aqueous solution of water glass and allowed to stand, it becomes a hydrous silicate gel and solids. The electrolyte Na+ and SO4 2-(Cl-) ions dissolved in it are removed by washing with water, and silica gel can be obtained after drying. If it absorbs water, some silica gels absorb about 40% or even 300% of the moisture.

It is used for gas drying, gas absorption, liquid dehydration, color layer analysis, etc., and is also used as a catalyst. If cobalt chloride is added, it will be blue when it dries and red when absorbed. Recyclable and reusable.

1. The main components of silica gel are silicone-based glue, silicon dioxide, calcium carbonate, curing agent, etc., which are divided into hot vulcanization type (high-temperature vulcanized silica gel HTV) and room temperature vulcanization type (RTV), among which the room temperature vulcanization type is divided into polycondensation reaction type and addition anti-front type. High-temperature silicone rubber is mainly used to manufacture various silicone rubber products, while room temperature silicone rubber is mainly used as adhesives, potting materials or molds.

2. The amount of hot vulcanized type is the largest, and the hot vulcanized type is divided into methyl silicone rubber (MQ), methyl vinyl silicone rubber (VMQ, the most dosage and product grade), methyl vinyl styrene silver beam silicone rubber PVMQ (low temperature resistance, radiation resistance), and other eye silicone rubber, fluorosilicone rubber, etc.

<>1. The main components of silica gel are silicone-based glue, silicon dioxide, calcium carbonate, curing agent, etc., which are divided into hot vulcanization type (high temperature vulcanized silica gel HTV) and room temperature vulcanization type (RTV), of which room temperature vulcanization type is divided into polycondensation reaction type and addition reaction type. High-temperature silicone rubber is mainly used in the manufacture of various silicone rubber products, while room temperature silicone rubber is mainly used as a mountain adhesive, filling and sealing material or mold.

2. The amount of hot vulcanized type is the largest, and the hot vulcanized type is divided into methyl silicone rubber (MQ), methyl vinyl silicone rubber (VMQ, the largest amount and product grade), methyl vinyl phenyl silicone rubber PVMQ (low temperature resistance, radiation resistance), and other silicone rubber, fluorosilicone rubber, etc.