According to some chemistry books, "silica gel" should be a condensate of silica with a molecular formula of mSiO2·H2O. The "silica gel" is a highly active adsorbent material, which is an amorphous substance, insoluble in water and any solvent, non-toxic and tasteless, chemically stable, and does not react with any substance except strong alkali and hydrofluoric acid. And we often say rhinoplasty, the silica gel filled in the breast is this kind of silica gel.
However, in the mold industry, the "silica gel" we mentioned is usually not the silica gel of the hydrate of silica mentioned above. Silicone in the mold industry is usually a kind of polysiloxane. Simply put, the "silicone" in the mold industry is a kind of synthetic rubber. Because it contains silicon atomic components, it is called silicone rubber, so it is referred to as "silicone" for short.
The “silica gel” in the mold industry has a wide variety of uses and uses. As far as product performance is concerned, there is a big gap depending on the raw materials, but in general this "silicone" (exactly silicone rubber) will show a tendency to replace rubber in the future.
In many cases, we mention that "silica gel" is not simply a condensate of silica, nor is it a silicified synthetic rubber on the mold industry. Instead, the above two types of products are called "silicone." At this time, we divided the "silica gel" into organic silica gel and inorganic silica gel. Inorganic silica gel is the first "silica gel" we mentioned - the hydrate of silica.
Silicon-containing synthetic rubber in the mold industry is called organosilicone because it contains hydrocarbon groups. When it comes to "silicone rubber" in some places, it will be defined as "between organic matter and inorganic matter", but more manufacturers of silicone rubber are still producing silicone.