Corrosion resistance of common materials for valves — EPDM

Ethylene propylene rubber is a synthetic rubber with ethylene and propylene as the main monomers. According to the composition of monomers in the molecular chain, it can be divided into ethylene propylene diene monomer and ethylene propylene diene monomer. The former is a copolymer of ethylene and propylene, expressed as EPM, while the latter is a copolymer of ethylene, propylene and a small amount of non conjugated diene third monomer, expressed as EPDM. Both are collectively referred to as ethylene propylene rubber.

It has good resistance to various polar chemicals such as alcohol, acid, alkali, oxidant, refrigerant, detergent, animal and vegetable oil, ketone and grease; However, it has poor stability in aliphatic and aromatic solvents (such as gasoline, benzene, etc.) and mineral oils. Under the action of concentrated acid for a long time, the performance will also decline. It is widely used in automobile parts, waterproof materials for construction, wire and cable sheaths, heat-resistant hose, adhesive tape, automobile seals, lubricating oil additives and other products.


Post time: Jun-21-2021

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