2025 年 98 巻 2 号 p. 18-24
Chlorosulphonated polyethylene (CSM) is a special synthetic rubber made from chlorination and chlorosulphonation of polyethylene. There are several types of CSM product which have different these factors. For example, higher chlorine CSM shows better oil resistance. In addition, the features of CSM are also influenced by formulation. However, the formulations of CSM are different from those of other rubbers (eg. NR, SBR, NBR...etc) . For example, it is not good for CSM even though zinc oxide (ZnO) or stearic acid is used for various other rubbers. In this report, we introduce the features and basic formulations of CSM.