The Difference Between Liquid Silica Gel And Solid Silica Gel
Time:2021-12-18
Views:324
1、 Shape difference between liquid silica gel and solid silica gel:
- 1. Liquid silica gel is in liquid state and has fluidity. It is a kind of food grade material with high transparency and safety. It is sealed and fed without vulcanizing agent and other auxiliary materials.
- 2. Solid silica gel is in solid state and has no fluidity. It is also a transparent environmental protection material. Vulcanizing agent needs to be added during molding to speed up the vulcanization molding time and open mold feeding molding.
2、 Differences between liquid silica gel and solid in application field:
- Liquid silica gel is generally used in baby supplies, kitchen supplies and medical supplies. It can directly contact food and human body.
- Solid silica gel is generally used in daily necessities, industrial sundries and auto parts.
- Safety of liquid silica gel and solid silica gel: liquid silica gel is a food grade material with high transparency and safety. Vulcanizing agent and other auxiliary materials are not added during molding, and it is sealed and fed for molding. Solid silica gel is a transparent material. Vulcanizing agent needs to be added during molding to speed up the vulcanization molding time and open mold feeding molding.
3、 The difference of forming methods between liquid silica gel and solid silica gel:
- Liquid silica gel is injection molded liquid silicone rubber (LSR): its full name is injection molded liquid silicone rubber, and the vulcanization equipment is injection molding machine. The injection molding machine has a very simple process flow (without manual processes such as batching, mixing, cutting and placing in the high-temperature rubber process, only one worker needs to take the product), high product accuracy (all manual procedures are replaced by the machine before molding) and high output (A / b glue is mixed and formed in a few seconds at a certain temperature), which has the advantages of saving people, electricity and materials. It can produce all products produced by high-temperature glue. In industry, liquid silica gel usually uses ion exchange method to desodium water glass to prepare silica sol. It is a translucent milky white liquid with high stability. Silica sol becomes a porous solid after drying.
- Solid silica gel molding is that the raw materials are solid pieces. After mixing by the mixer, the cutting machine cuts the products into the appropriate size and thickness of the product and mold, and then puts them into the mold. It is molded at a certain temperature under the pressure molding machine. When demoulding, it is similar to plastic products, and the mold also needs to be cleaned.
4、 Storage time difference between liquid silica gel and solid silica gel:
（1）Liquid silica gel can be divided into single component liquid silica gel and two-component (or multi-component) liquid silica gel according to components. Single component liquid silica gel will solidify under certain conditions.
- One component liquid silica gel will solidify in contact with water vapor in air, room temperature or high temperature. The higher the temperature, the faster the curing speed. As for two-component or multi-component silica gel, silica gel binder and catalyst are stored in different components and generally will not solidify.
- Long time storage of liquid silica gel will lead to the increase of viscosity and poor operability.
- The storage life of domestic liquid silica gel is generally set as half a year, and the service life of imported silica gel from delivery to use is generally set as one year.
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