Why do silicone products smell bad?

Silica gel itself is odorless, but the smell may be the use of inferior silica gel raw materials, and there is the smell of vulcanization agent volatilization.

In this pay attention to green society, silica gel products have gradually become a trend. With silica gel as the main raw material processing works, are known as silica gel products. Silica gel is a porous material of different particle sizes which is properly dehydrated from silicic acid gel. It has an open porous structure and can adsorb many substances. It is a good carrier for desiccant, adsorbent and catalyst. The adsorption of silica gel is mainly physical adsorption, regeneration and repeated use. In alkali metal silicate (such as sodium silicate) solution add acid, make it acidified, and then add a certain amount of electrolyte for stirring, namely the formation of silicic acid gel; Alternatively, silicic acid gels can be formed by adding acid or ammonium salts to a concentrated sodium silicate solution. Silicic acid gel is left to age for a few hours, then washed with hot water to remove soluble salts, dried at 60 ~ 70℃ and activated at about 300℃ to get silica gel. The silica gel was soaked in cobalt chloride solution and then dried and activated to obtain color-changing silica gel. Silica gel is a kind of highly active adsorption material, belongs to the amorphous substance, its chemical molecular formula is msio2·nh2o. Insoluble in water and any solvent, non-toxic tasteless, stable chemical properties, in addition to strong alkali, hydrofluoric acid does not react with any substance. Silica gel itself is odorless, but the smell may be the use of inferior silica gel raw materials, and there is the smell of vulcanization agent volatilization. So silicone products can have a bad smell.