The main chain of the injection molded plastic part EPDM rubber is a fully saturated linear structure without double bonds, and the side chain has a diene ruthenium, so that it can be vulcanized with sulfur. EPDM rubber has excellent aging resistance, ozone resistance, weather resistance, heat resistance (long-term use in 120 ° C environment), chemical resistance (such as alcohol, acid, alkali, oxidant), but not Resistant to aliphatic and aromatic solvents. EPDM rubber has the lowest density in rubber and has high filling characteristics, but lacks self-adhesiveness and mutual adhesion. In addition, EPDM rubber has outstanding steam resistance and can be used to make sealing products such as steam-resistant membranes. EPDM rubber has been widely used in washing machines, accessories and door and window sealing products in television sets, or in the production of various composite profiles.
Strips are also known as sealing strips, strips, and rubber strips. According to the different raw materials, it can be divided into natural rubber sealing strips, EPDM sealing strips, PVC rubber sealing strips and silicone products. Now I will introduce the performance price of several sealing strips. Natural rubber seals are used in relatively small quantities and at relatively high prices. Compared with most synthetic rubbers, natural rubber has good comprehensive mechanical properties, cold resistance, high resilience and wear resistance. Natural rubber is not resistant to mineral oil, but it is more stable in vegetable oils and alcohols. In the hydraulic brake system of brake fluid composed of mixed liquid of n-butanol and refined castor oil, the rubber ring is made of natural rubber, and the general sealant is also made of natural rubber.
The EPDM seal has good elasticity, smooth surface, and the service life is about 14 years. The cost is high, and the high quality EPDM seal can be recycled. For injection molding plastic parts, it can also be counted as one. A way to reduce costs. EPDM sealing strip is resistant to high and low temperature, good weather resistance, aging resistance and corrosion resistance. Conductive flame retardant insulation.