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Preliminary understanding of silica gel

Author:Jingcheng Rubber Click: Time:2019-05-27 15:38:18



First point: high temperature resistance

 Applicable temperature range -40 to 230 degrees Celsius, can be used in microwave ovens and ovens. Therefore, some lunch boxes and bowls are made of silica gel.

 Second point: easy cleaning

 Silica gel products produced from silica gel can be recovered after being washed with clear water or washed in the dishwasher.

 Third point: long service life

 The chemical properties of silica gel are very stable, and the products produced have a longer life than other materials.

 Fourth point: soft and comfortable

 Thanks to the softness of silicone material, cake mould products are comfortable to touch, extremely flexible and not deformed.

 Number five: Colorful

 According to the needs of customers, different beautiful colors can be prepared. Therefore, there are many silica gel crafts in the market that are very beautiful and fashionable and become the favorite of stars and others.

 Sixth point: environmental protection and non-toxicity

 No toxic and harmful substances are generated from the raw materials entering the factory to the finished products being shipped.

 Point 7: Electrical Insulation Performance

 Silicone rubber has high resistivity and its resistance can remain stable in a wide temperature range and frequency range.  At the same time, silica gel has good resistance to high-voltage corona discharge and arc discharge, such as high-voltage insulators, TV high-voltage caps, electrical components, etc.

 Point 8: Low Temperature Resistance

 The critical point of the lowest use temperature of ordinary rubber is -20 degrees to -30 degrees, while silicone rubber still has good elasticity at -60 degrees to -70 degrees, and some special formula silicone rubber can also withstand extremely low temperatures, such as low-temperature sealing rings, etc.

 Point 9: Conductivity

 When conductive fillers (such as carbon black) are added, silicone rubber has good conductive properties, such as keyboard conductive contact points, electric heating element components, antistatic components, shielding for high-voltage cables, medical physiotherapy conductive films, etc.  Mainly used for keys, etc.

 Point 10: Weather Resistance

 Ordinary rubber degrades rapidly under the action of ozone generated by corona discharge, while silicone rubber is not affected by ozone, and its physical properties have only slight changes under ultraviolet rays and other climatic conditions for a long time, such as sealing materials used outdoors.

 Eleven o'clock: thermal conductivity

 When some thermal conductive fillers are added, silicone rubber has good thermal conductivity, such as heat sink, thermal conductive gasket, copier, fax machine thermal conductive roller, etc.

 Point 12: Radioresistance

 The radiation resistance of silicone rubber containing phenyl is greatly improved, such as electrical insulation cables, connectors for nuclear power plants, etc.

 What are the characteristics and uses of silica gel products?

 A. high and low temperature resistance: it can be used for a long time at 200℃ and still has elasticity at -60℃.

 B. electrical insulation performance: silica gel has excellent dielectric properties, especially at high temperatures, which are much higher than those of ordinary organic rubber, and its dielectric strength is almost unaffected by temperature in the range of 20-200℃.

 C. excellent weather resistance, ozone resistance and ultraviolet radiation resistance, without cracking after long-term outdoor use.  It is generally believed that silicone rubber can be used outdoors for more than 20 years.

 D. excellent high temperature compression set.

 E good processing performance, easy molding and other advantages. various products can be manufactured by extrusion hot air vulcanization molding, mold addition molding, extension molding and other methods.

 Because silica gel products have excellent comprehensive properties and good technical and economic effects, they have played an irreplaceable role in physiotherapy, shipbuilding and industrial production.

 Advantages of silica gel: 1. The silica gel keyboard is environmentally friendly, nontoxic and tasteless, and has good elasticity;  2. Wear resistance, high temperature resistance, no deformation and other characteristics, can be used for a long time;  3. Smooth appearance and strong hand feel are real green and environmental protection products;  4. Monochrome, bicolor, tricolor and mixing with other colors can be done;  5. LOGO on ornaments can be words, patterns or a combination of words and patterns;  Silicone is very environmentally friendly and cheap, and it is the favorite of white collar, trendy people and leaders. Different types of silicone are different foam silicone tubes with gypsum content. This is reflected in the different viscosity of silicone, and the higher the gypsum content, the more viscous it is.  This is marked on the bottle selling silica gel. For example, silica gel H is very loose, and the viscosity of silica gel G is generally moderate.


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