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The processing works that use Silicone as the main raw material are called silicone products. Silicone is a porous material with different particle sizes formed by dehydration of silicic acid gel. It has an open porous structure and can adsorb many substances.
It is a good desiccant, adsorbent, and catalyst carrier. Silicone is a granular, glass, porous form of silica prepared from synthetic sodium silicate. Silica gel has higher hardness than ordinary household gel-like gelatin and agar.
It is a naturally occurring mineral refined and processed into any granular or beaded form. As a desiccant, it has an average pore diameter of 2.4 nanometers and has a strong affinity for water molecules. A small (usually 2×3 cm bead) file package that silicone gel most often encounters in daily life. In this form, it is used as a desiccant to control local humidity to avoid damage to some cargo or degradation. Because silicone can add chemical indicators and absorb moisture very well, the silicone bag usually bears the content warning that users do not eat.
The adsorption of silicone is mainly physical adsorption, which can be regenerated and used repeatedly. Add acid to the alkali metal silicate (such as sodium silicate) solution to acidify it, and then add a certain amount of electrolyte to stir, that is, generate a silicic acid gel; or add acid to a more concentrated sodium silicate solution or Ammonium salts can also generate silicic acid gel. Allow the silicic acid gel to stand for several hours to age, then wash away the soluble salts with hot water, dry at 60-70°C and activate at about 300°C to obtain silicone. Soak the silicic acid gel with the cobalt chloride solution, then dry and activate it to obtain discolored silicone.
Food grade silicone is non-toxic and tasteless, insoluble in water and any solvent, and is a highly active green product. Food grade silicone has inherent thermal stability (-40℃-230℃). It is suitable for different occasions. The product has good flexibility to meet different needs.
The superior performance, coupled with the fact that silicone is a non-petroleum product and does not rely on increasingly scarce petroleum resources, has made silicone products a substitute for similar plastic products. It is also a general trend. At the same time, silicone products can be applied to many areas where plastic products cannot. Such as baby nipples, human organs, etc., the application prospects are very broad.
