Characteristics of silicone products

Features of silicone products 1 Introduction of silicone products The processed products with silica gel as the key raw material are called silicone products. Silica gel is a porous material with different particle sizes formed by moderate drying of silicic acid. With open porous material, it can adsorb many substances, and it is a good moisture-proof agent, absorbent and catalyst carrier. The adsorption function of silica gel is mainly physical adsorption, which can be regenerated and used repeatedly. Add acid to alkali metal silicate (such as sodium silicate) solution to make it acidified, and then add a certain amount of electrolyte to carry out mixing, that is to generate silicic acid gel; or add acid to a relatively concentrated sodium silicate solution Or ammonium salts can also generate silicic acid gum. Let the silicic acid gel stand for a few hours to make it aged, then wash off the soluble salts with boiling water, dry it at 60-70 °C, and activate it at about 300 °C to obtain silica gel. The silicic acid gel is soaked in cobalt chloride solution and then dried and activated to obtain discolored silica gel. Food-grade silica gel is non-toxic and tasteless, insoluble in water and any solvent, and is a highly active and environmentally friendly product. Food-grade silica gel has inherent thermal stability (-40°C-230°C). It is suitable for different occasions. The product has excellent flexibility and can meet different requirements. 2. Characteristics of silicone products Heat resistance: applicable temperature range -40 to 230 ° C, can be used in microwave ovens and ovens. Easy to clean: The silicone products produced from silicone are washed in cold water after use It can be repaired and cleaned in a dishwasher. Long life: The chemical properties of the silicone material are very stable, and the products produced have a longer life than other materials. Soft and comfortable: Thanks to the flexibility of the silicone material, the cake mold The product is comfortable to the touch, extremely flexible, and does not deform. Variety of shades: it can be formulated into different bright colors according to the needs of customers. Environmentally friendly and non-toxic: no toxic and harmful substances are produced from the incoming raw materials to the finished product shipment. Insulation properties : Silicone has strong resistance, and its resistance value can remain stable in a wide temperature range and frequency range. At the same time, silica gel has good resistance to high-voltage arc discharge and arc discharge, such as high-voltage insulators, TV high-voltage caps, electrical components, etc. Low temperature resistance: Generally, the minimum application temperature critical point of rubber is -20 degrees to -30 degrees, but silica gel still has good elasticity at -60 degrees to -70 degrees, and some special recipes of silica gel can also withstand extremely low temperatures , such as low temperature sealing rings, etc. Conductivity: When conductive fillers (such as carbon black) are added, silica gel has excellent conductivity, such as keyboard conductive contact points, electric heating material components, anti-static components, shielding for high-voltage cables, medical physiotherapy conductive films, etc. Weather resistance: ordinary rubber seals degrades rapidly under the effect of ozone generated by arc discharge, while silica gel is not affected by ozone, and its physical properties only change slightly under ultraviolet light and other climatic conditions for a long time, such as sealing materials for outdoor applications, etc. . Heat transfer: When some thermal conductive fillers are added, silica gel has excellent thermal conductivity, such as radiators, heat transfer gaskets, printers, fax machine heat transfer rollers, etc. Radiation resistance: The radiation resistance of silica gel containing phenyl is greatly improved, such as electrically insulated cables, connectors for nuclear power plants, etc.
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