What is chlorosulphonated polyethylene (CSM)?

Part of the book series: Springer Series on Polymer and Composite Materials ( (SSPCM)) Chlorosulphonated polyethylene (CSM) occupies an emerging field due to its immense flexibility, excellent heat resistance, excellent oil resistance as well as water resistance, good flame resistance and weathering resistance, and desirable compression set.

Does CSM rubber have a sulphur content?

Generally, this rubber contains 27–45 % chlorine and very nominal sulphur content (approximately 0.8–2.2 %). The enormous improvement in physical, mechanical, and dielectric properties as well as electrical and thermal conductivity of the entire CSM rubber composites is due to the addition of the particulate fillers including conductive fillers.

Why is CSM used in rubber engineering?

CSM is used in rubber engineering due to its prodigious properties resulting from the saturated polymer structure. The vulcanized form of CSM can be used in the production of conveyor belt lining or cable and conductor insulation . Organic acids, thiazoles, dithiocarbamates, or metal oxides are used in CSM crosslinking.

Why is CSM a special-purpose elastomer?

CSM is a special-purpose elastomer on account of its ideal balance of holdings such as ozone, oxygen, weather, heat, oil, and chemicals resistance with good mechanical properties. Due to the presence of the sufficient polarity of the chlorine group in CSM, it is widely used as blends.

How many CSM materials were made in 1991?

An estimated 110,000 tons/y were produced in 1991. DuPont Performance Elastomers announced on May 7, 2009, that it intended to close its manufacturing plant in Beaumont, Texas, by June 30, 2009. This was DPE's sole plant for CSM materials.

Why is CSM rubber used in outer sheath?

The CSM is such a special-purpose one which is normally included in the inner sheath material for its effective adhesion with metal due to its polar moiety (chlorine group) which interacts with the metal as well as outer sheath compound; besides, this CSM rubber is also used in outer sheath also (Scheme 4).