The difference between silica gel and silicone rubber
According to the name in some chemistry books, "silica gel" should be a condensation of silicon dioxide, with the formula mSiO2 H2O. "Silica gel" is a highly active adsorption material, it is an amorphous substance, insoluble in water and any solvent, non-toxic and tasteless, stable chemical properties, in addition to strong alkali and hydrofluoric acid, does not react with any substance. And we often say that breast augmentation is filled with silica gel is this silica gel.
But in the mold industry, the "silica gel" we refer to is usually not the silica hydrate mentioned above. The organic silicon in the mold industry is usually a polysiloxane. To put it simply, the "silica gel" of the mold industry is a synthetic rubber. It is called silicone rubber because it contains silicon atoms, so it is referred to as "silica gel".
There are many kinds of "silica gel" in the mold industry, and the use is not the same. As for the product performance, there is a big gap according to the raw material, but in general, this "silicone" (to be exact, silicone rubber) will show a trend of replacing rubber in the future. When we talk about "silica gel," we usually don't mean simply silica condensate, or silicide synthetic rubber in the mold industry. Instead, the two products are called "silica gel". At this time, we divide the "silica gel" into organic silica gel and inorganic silica gel. Inorganic silica is the first type of "silica" we mentioned -- the hydrate of silica. The silicone synthetic rubber in the mold industry is called organic silicone because it contains hydrocarbon base. In some places "silicone rubber" is defined as "between organic and inorganic", but more silicone manufacturers still boast that they are producing silicone resins. From the above three cases, the concept of the word "silica gel" is very confused, but unfortunately, so far, the country has not stipulated a clear name.
When we hear the word "silicone," we have to figure out whether it's silica or silicone synthetic rubber, or inorganic or organic. Here it is necessary to mention a few words related to the name of "silicone rubber" : silicone rubber, silicone rubber, silicone Likon.
The relationship between silica gel and silicone rubber has been mentioned above. Silicone rubber is different from and contains silicone rubber, is the organic "silicone rubber" in "silicone rubber". "Silicone rubber" is the name of Hong Kong and Taiwan. In Mainland China, it is called "silicone rubber". A. silicone rubber B. silicone rubber C. silicone rubber D. mainland China Silicon is the transliteration of silica gel, which we usually call "silica gel".