What is the hardness of silicone products, what are the factors that affect the hardness?

The hardness of silicone products is one of the important test indicators. In general, the higher the content of rubber, the lower the hardness. The hardness of silicon is based on Shore hardness standard, and the instrument is also measured by Shore hardness tester. The hardness is between 0 and 100 degrees, and its use varies depending on the purpose of the product. Silicon products according to the different process, hardness is also different, the process has liquid-solid method and liquid-solid method.

Liquid silicone processing can be used to make 0-20 degrees of "low grade" silicone rubber products, even if you have this material on hand, it is still very sticky. Such silicone products are usually rare, and developing a set of liquid silicone product molds is particularly expensive. For a small number of people, it usually costs thousands of dollars. Most fluidized bed processes are at 1020 degrees. Some silicone rubber products are produced with liquid technology, and silicone rubber products produced with liquid technology are easy to produce uneven edges due to material reasons. The liquid process is suitable for low order silicone products and does not require very strict automatic assembly.

The second is the solid process, at present, the softness of the solid silicone process is at least 30 degrees, and the maximum is about 80 degrees, although it can also reach a higher degree, but the failure rate is too high, the product is very brittle, and it is not easy to disassemble by itself. Therefore, the best hardness of solid state processing is between 30 degrees and 70 degrees. Can not make softer products, but can automatically discharge the edge, the product appearance is beautiful, no burrs.

Generally, the hardness of silicone rubber products is between 30-80, which is also the hardness of silicon gel commonly used in most silicone products. Silicone rubber products have good toughness, good elasticity, because the external force is not easy to deform, there will be a layer of oily substances, so the touch is very smooth.