Chlorosulfonated Polyethylene (CSPE)

Definition - What does Chlorosulfonated Polyethylene (CSPE) mean?

Chlorosulfonated polyethylene (CSPE) refers to a group of chemical substances that are chlorinated elastomers. They are formed via the reaction of polyethylene with chlorine and sulfur dioxide. They are often used as corrosion prevention coatings on metallic substrate surfaces.

Corrosionpedia explains Chlorosulfonated Polyethylene (CSPE)

Chlorosulfonated polyethylene elastomers (CSPE) are used for electrical insulation applications and in corrosive environments as preventative agents. They function well in a wide temperature range between -20°C and +125°C (-4°F and 257°F).

In addition, CSPEs have excellent heat, fuel, ozone and UV resistance, therefore offering a good set of properties to various substrates.

Example uses of CSPEs include:

  • Wires - Increased toughness and abrasion resistance
  • Hoses and pipes - Dynamic adhesion and weathering resistance to fluids
  • Roofing - Reduced wear and tear due to UV exposure, moisture and weather variations

However, chlorosulfonated polyethylene may pose certain health and safety concerns due to their emission of hydrogen chloride (HCl), carbon monoxide (CO) and sulfur dioxide (SO2). All of these compounds may pose lethal repercussions to humans and animals in the event of exposure.

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