Neoprene Rubber or Polychloroprene (CR) is a versatile synthetic rubber with exceptional resistance to oil, petroleum, and weathering. It also offers good UV, ozone and chemical stability; flexibility over a wide temperature range, and superior abrasion resistance. Neoprene is often found in laptop sleeves, electrical insulation, automotive fan belts, and various other industries and applications.
Neoprene production involves the free-radical polymerization of chloroprene. In commercial production, however, it is prepared by free-radical emulsion polymerization. Chloroprene polymerization is initiated with potassium persulfate. Bifunctional nucleophiles, metal oxides, and thioureas are then used to cross-link individual polymer strands.
Although natural rubber offers better mechanical properties, Neoprene’s resistance to degradation is far better than both natural and synthetic rubber. As a result, it is ideal for particularly demanding applications: gaskets, hoses, tubing, corrosion-resistant coatings.
Advantages of Neoprene Rubber
Exceptional physical toughness
Hydrocarbon oil resistance
Sun, ozone and weathering resistance
Wide temperature range for continuous use
Superior flame retardant properties relative to hydrocarbon-based elastomers
Resistance to twisting and flexing damage
Versatile compounding capabilities
Properties of Neoprene Rubber
ASTM D-2000 Classification BC, BE (Standard Classification System for Rubber Products in Automotive Applications)
Refrigerant Halofluorocarbons with Oil: R-11, R-12, R-22
Silicone Oil: Fair – Excellent
Solvent Resistance: Fair
Low Temperature Range: -70ºF – -30ºF
Minimum for Continuous Use (Static): -80ºF
Brittle Point: -85ºF
High Temperature Range: +200ºF – +250ºF
Maximum for Continuous Use (Static): +250ºF
Flame Resistance: Fair – Good
Gas Permeability: Fair – Good
Odor: Fair – Good
Ozone Resistance: Good – Excellent
Oxidation Resistance: Good – Excellent
Radiation Resistance: Fair – Good
Steam Resistance: Fair – Good
Sunlight Resistance: Good – Excellent
Taste Retention: Fair – Good
Weather Resistance: Fair – Good
Water Resistance: Fair – Good
Applications of Neoprene Rubber
Neoprene rubber is a versatile synthetic rubber often used in a wide variety of industries and applications:
Automotive: Transmission belts, brake and steering system components, vibration mounts
Construction: Window seals and gaskets, highway and bridge seals, washers
Music: Speaker Cones, Piano hammer tips
Home accessories: Laptop sleeves, remote controls, mouse pads
Qualiform ISO Certified Neoprene Rubber Manufacturer
Qualiform is an ISO-certified Neoprene manufacturer offering a wide range of custom rubber molding services. We also offer capabilities in molding standard OEM replacement stars as well as custom finger lengths and configurations. If you are looking to develop a recycling star for your Neoprene application or media processing, contact our expert technical staff for consultation on design and property requirements.
Qualiform offers 40+ years of experience in rubber parts manufacturing, so customers can rely on us to create the high-quality Neoprene products they need. Contact the Qualiform technical staff at (330) 336-6777 to learn more about how we can help you.
Qualiform Proprietary Blend
Qualiform also offers a proprietary blend with reinforcing fibers for Neoprene. Our proprietary blend puts high-strength reinforcing fibers directly into the Neoprene, so the material has increased resistance against abrasions and impacts as well as improved durometer, toughness and performance. We also offer this blend for our other offered materials:
Rigid & Flexible Rubber
Thermoplastic Elastomers (TPE)
Interested in Neoprene or Qualiform’s other rubber materials? Contact Qualiform today to receive expert material recommendations.