Liquid silica gel is relative to solid high-temperature vulcanized silicone rubber. It is a liquid adhesive with good fluidity, fast vulcanization, more safety and environmental protection, and can fully meet the requirements of food grade. According to the position of the functional groups (ie cross-linking points) contained in the molecular structure, liquid rubbers with functional groups are often divided into two categories: one type is called the remote claw type liquid rubber with functional groups at both ends of the molecular structure; the other type is The active functional groups are randomly distributed in the main chain, that is, those with functional groups in the molecular structure are called non-telechelic liquid rubbers. Of course, there are also those with both intermediate functional groups and end-group official groups,
The current focus is on the research of remote-claw liquid rubber. For liquid rubber, the chain extender or crosslinking agent with appropriate functional groups should be selected according to the active functional groups it contains.
Liquid silicone has excellent transparency, tear strength, resilience, yellowing resistance, thermal stability, water resistance, good breathability, heat aging resistance and weather resistance, meanwhile, the viscosity is moderate, easy to operate, and the product has high transparency. See if the casting material in the mold has defects such as bubbles, the linear shrinkage rate is ≤0.1%, and the size of the copied product is precise.
Liquid silicone rubber can be used for trademarks, products, pacifiers, medical supplies, coating, dipping and perfusion. Silicone products such as crystal molds, polyurethanes, epoxy resins and other molds, injection molding processes, cake molds, etc., are widely used in the electronics industry as moisture-proof, consignment, insulation coating and potting materials for electronic components , Play a role of dust, moisture, shock and insulation protection for electronic components and assemblies. If the transparent gel is used to encapsulate the electronic components, it can not only play a role in shock and waterproof protection, but also can see the components and can use the probe to detect the failure of the component and replace it. The damaged silicone gel can be potted again repair. It can also be used to manufacture gypsum, wax, epoxy resin, polyester resin, polyurethane resin and low melting point alloy product forming molds, used in high-frequency embossing of artificial leather, shoe surface and bottom modeling, arts and crafts manufacturing, Reproduction of ceramics, toy industry, furniture, household appliances and electronic components, molding of gypsum and cement materials, molding of wax products, manufacturing of models, molding of materials, etc.
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