The vulcanization reaction of one-component room temperature vulcanized silicone rubber is initiated by moisture in the air. The commonly used cross-linking agent is methyl triacetoxy silane. Its Si-OC bond is easily hydrolyzed. The acetoxy group combines with the hydrogen group in the water to form acetic acid, and the hydroxyl group in the water is moved to the original acetoxy group. In positio

The vulcanization reaction of one-component room temperature vulcanized silicone rubber is initiated by moisture in the air. The commonly used cross-linking agent is methyl triacetoxy silane. Its Si-OC bond is easily hydrolyzed. The acetoxy group combines with the hydrogen group in the water to form acetic acid, and the hydroxyl group in the water is moved to the original acetoxy group. In positio

The advantages and disadvantages of the three kinds of room temperature vulcanization silicone rubber: the advantage of single-component room temperature vulcanization silicone rubber is that it is easy to use, but the deep curing speed is more difficult; the advantage of two-component room temperature vulcanization silicone rubber is that it does not emit heat during curing and has a small shrink

The raw rubbers of one-component and two-component condensation RTV silicone rubbers are all α,ω-dihydroxy polysiloxanes; addition-type RTV silicone rubbers contain alkenyl groups and hydrogen side groups (or end groups) Polysiloxane, because it can get a good curing effect at a temperature slightly higher than room temperature (50～150℃) when it is cured, it is also called low temperature vulcaniz

Room temperature vulcanized silicone rubber can be divided into single-component and two-component room temperature vulcanized silicone rubber according to its packaging method, and can be divided into condensation type and addition molding according to the vulcanization mechanism. Therefore, room temperature vulcanization silicone rubber can be divided into three types according to the compositio

Room temperature vulcanized silicone rubber is known as liquid silicone rubber due to its low molecular weight. Its physical form is usually a flowable fluid or a viscous paste, and its viscosity is between 100 and 1,000,000 centistokes. According to the requirements of use, the compound before vulcanization can be made into a self-leveling potting compound or a putty that does not flow but can be

Room temperature vulcanized silicone rubber (RTV) is a new type of silicone elastomer that came out in the 1960s. The most notable feature of this rubber is that it can be cured on-site without heating and pressing at room temperature, and it is extremely convenient to use. Therefore, as soon as it came out, it quickly became an important part of the entire silicone product. Now room temperature v

The three main materials of electronic packaging are substrate materials, plastic packaging materials, lead frames and solders. Among plastic packaging materials, epoxy plastic packaging materials (EMC) are the mainstream of integrated circuit packaging at home and abroad. In EMC, the content of silicon dioxide powder accounts for 60% to 90%. In electronic packaging, high moisture resistance, low

Nano-silica is physiologically inert and highly absorbent, and is often used as a carrier in the preparation of fungicides. When nano silica is used as a carrier (UG-S07AG), it can absorb antibacterial ions to achieve antibacterial purposes. It can be used in the manufacture of refrigerator shells and computer keyboards. Nano-silica has large specific surface area, high porosity and many surface a

First of all, silica is the main component of quartz ceramics. Secondly, as an additive, it can also effectively enhance the performance of ceramics. For example, using silica instead of nano Al2O3 to add to 95 porcelain, it can not only play the role of nano particles, but also the second phase particles, not only improve the strength and toughness of the ceramic material, but also increase the h