The copolymer EPDM rubber roller synthesized based on ethylene and propylene monomers has outstanding aging resistance, electrical insulation performance and ozone resistance, and has elasticity close to natural rubber and good cold resistance.
1. Aging resistance
The aging resistance is the best among the existing general-purpose rubbers, with outstanding ozone resistance, excellent weather resistance and water vapor resistance, and can be used in sunny, humid and cold natural environments for a long time.
2. Physical and mechanical properties
Good elasticity and compression deformation resistance, good elasticity retention at low temperature, harden when frozen at -57°C, and brittle at -77°C.
3. Heat resistance
At 150°C, it can generally be used for a long time, and it can withstand high temperatures of 200°C for intermittent use.
4. Medium resistance
It has good resistance to various polar chemicals such as alcohols, ketones, ethylene glycol and phosphate lipid hydraulic oils and acids and bases (except concentrated and strong acids), and its performance does not change much after long-term contact. Poor stability in solvents (such as gasoline) and mineral oil.
5. electrical properties
The insulation performance and corona resistance performance are very good, and the water absorption is small, and the electric resistance performance after immersion in water is also very good.
6. Processing performance
It is easy to accommodate reinforcing agents and softeners, and can be filled with a large amount of oil and fillers without affecting the characteristics. The vulcanization speed is slow, and it cannot be used together with unsaturated rubber. The self-adhesive and mutual-adhesive properties are very poor, which brings certain difficulties to the processing technology.
6. Processing performance
good processing performance, easy to mix with fillers and compounding agents, and can be used with most synthetic rubbers.
7. Uses
Mainly used in several fields that require aging resistance, water resistance, corrosion resistance, and electrical insulation, such as wire, cable sheathing and high-voltage, ultra-high-voltage insulation materials, sealing in high-temperature water vapor environments, bathroom equipment seals or parts, outdoor protective sleeves, Rubber parts in braking (braking) systems, etc.
Post time: Feb-07-2023