The difference between silicone products and plastic products

With the progress of science and technology, the development of society, people's daily life has been inseparable from plastic products and silicone products. If it is the people who specialize in these two industries, it is easy to mix them together. Well, today, I'd like to talk about the differences between silicone products and plastic products.

First of all, let's start with the difference between plastics and rubber. Simply said, if in the external force, plastic deformation, it is very difficult to restore to the original appearance, and silica gel is very easy to restore to the original state. For example, if the silicone O-ring is stretched, it will be broken and restored to its original appearance. However, if the plastic tarpaulin is deformed, it will not return to the original state. In professional terms, that is, under the action of external force, plastic deformation is plastic deformation, while silica gel deformation is elastic deformation. This is important because of their different molecular structures. The elasticity of plastics individually is less than 100%, while rubber can exceed 1000%.

Secondly, the production process is different, silica gel products have a vulcanization process. The silica gel seal ring has an open porous structure and can adsorb many substances. It is a good desiccant, adsorbent and catalyst carrier. The adsorption of silica gel is mainly physical adsorption, which can be regenerated and reused. In alkaline silicate (such as sodium silicate) solution add acid, acidification, add a certain amount of electrolytes to stir, that is to form silicic acid gel, or in a strong sodium silicate solution, adding acid or ammonium salt can also produce silica gel.

Finally, plastic products may be repeatedly recycled and reused, but rubber products are not. It can only be processed into recycled rubber before it can be reused. The O-ring with large cross-section should be selected as much as possible when selecting O-ring. Under the condition of the same clearance, the volume of O-ring squeezed into the gap should be less than the maximum allowable value. The silica gel seal ring has an open porous structure and can adsorb many substances. It is a good desiccant, adsorbent and catalyst carrier. The adsorption of silica gel is mainly physical adsorption, which can be regenerated and reused. In alkaline silicate (such as sodium silicate) solution add acid, acidification, add a certain amount of electrolytes to stir, that is to form silicic acid gel, or in a strong sodium silicate solution, adding acid or ammonium salt can also produce silica gel.