日本ShinEtsu信越硅凝胶可在-65～200℃温度范围内长期保持弹性，它具有优良的电气性能和化学稳定性能、具有生理惰性。是一种特殊的有机硅橡胶，分A、B双组份，按1:1比例混合后加热硫化成型。

Silicone Gel Application Characteristics

resistant to moisture, dirt and other atmospheric components; Reduce mechanical stress and tension caused by mechanical, thermal shock and vibration; Easy to repair, good self-repair ability, can be damaged and self-repaired many times; Good transparency and high light transmittance; Good electrical performance, long-term stability; No solvents, no curing by-products released; Fully compliant with EU ROHS directives.

silicone gel application areas

silicone gel is widely used in the electronics industry as moisture-proof, insulating coating and potting materials for electronic components, inner coating materials for transistors and integrated circuits, elastic adhesives for optical instruments, and organs in the human body.

difference between silicone gel and silicone rubber

silicone rubber products belong to solid state molding processing, it is based on polymethyl vinyl siloxane, raw materials through silica, siloxane and silicone resin and other compounds combined into auxiliary materials are combined, the finished product is produced and processed by high temperature molding with good softness, hardness and softness between 20-80 degrees, silicone gel belongs to a kind of silica gel, mainly liquid molding can reach -40 degrees of flexibility, and higher purity, strong elasticity, it belongs to the semi-solidified state after molding and solidification, used as a variety of auxiliary sealing basic materials have good sealing, have a certain high temperature resistance, raw material modulation is the same as silicone rubber raw materials will not appear in the solidification state, and after the fixed line can form a solidified body, there is no reaction change in the fixed line process.

silicone gel is different from silicone products in terms of processing method and product material, silicone gel has better adaptability and environmental properties to be used in any substance, and silicone gel can be automatically healed after being squeezed and damaged, and the density can be obtained moisture-proof and waterproof effect, silicone gel can be divided into a variety of usage types, and our common medical materials and other materials will use medical-grade silicone gel materials, because it has sub-zero softness and automatic healing conditions, and can be in contact with the skin and the human body for a long time.

How to synthesize silicone gels

sulfuric acid method. Water glass and sulfuric acid are diluted to a certain concentration and then neutralized to form a hydrogel, which is made by aging, washing, adding additives for homogenization, spray drying, air flow crushing, and drying.

hydrochloric acid decomposition method. First, the water glass solution and sodium chloride solution are salted, and then decomposed with 31% hydrochloric acid to precipitate the microparticle silica gel, which is washed, dehydrated, dried, crushed and sieved to prepare the finished product.

carbonization method. It is melted by silica sand and high purity ash, first dissolve the melt, pass carbon dioxide gas for carbonization for 6~8h, wash with water, add sulfuric acid to adjust the pH value to 6~8 for the second wash, dehydrate, dry, and crush, and the finished product is obtained.