Chloroprene

 It may also be used in outdoor applications, as it has a good resistance to temperature changes, ozone action and adverse weather conditions. CR or Chloroprene is a homo polymer of this product or chloro butadiene. It has excellent mechanical and good abrasion properties even without reinforcing filters and has a resonable resilience in grades over 60 degrees shore A. This product displays a good resistance to heat, ozone and weathering and also gives good adhesion to metal. The recommended operating temperature range is between -40 degrees Celcius to +125 degrees Celcius.

Neoprene, which is the trade mark name of Chloroprene has good resistance to inorganic hydrocarbons. It is moderately resistant to both petroleum oils and weather (ozone, Ultra Violet rays, oxygen). Neoprene is classified as a general purpose elastomer which has relatively low compression set, good resilience and abrasion, and is flex cracking resistant. It is used extensively for sealing refrigeration fluids due to its excellence resistance to ammonia.

Chemically known as polychloroprene but often referred to by the trade name Neoprene, this substance was one of the first synthetic materials developed as an oil-resistant substitute for natural rubber. Neoprene’s molecular structure closely mirrors that of natural rubber, with the exception that a chlorine atom has replaced a methyl (CH3) side group. Presence of a chlorine atom in each repeating unit increases the compound’s polarity and improves its resistance to hydrocarbon fluids despite the presence of a double bond in the main chain. Because the chlorine atom essentially deactivates the double bond, neoprene is more resistant to oxygen, ozone, and UV light than similarly unsaturated polymers.

Due to the similarity of their structures, natural rubber and neoprene are generally comparable in their good strength, abrasion resistance, resilience, elongation, and strain crystallization characteristics. Both also offer a similar low fatigue property, low heat build up, low temperature flexibility, and high bondability. Neoprene surpasses natural rubber in its resistance to aging, heat, oils, ozone, and solvents. Neoprene has also gained Food and Drug Administration department approval for use in the food and beverage industries.

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