The most important characteristic of EPDM bellows expansion joint is its superior resistance to oxidation, ozone and erosion.
Compared with other commonly used general rubber or special rubber, the main performance advantages of EPDM bellows expansion joint are as follows:
- Highly cost-effective.
Raw rubber density of EPDM is only 0.86 ~ 0.90g / cm3. It is the most common rubber density of raw rubber, and can be filled in a large amount to reduce the cost of rubber. - Excellent aging resistance.
Excellent resistance to weather, ozone, sunlight, heat, water, vapor, UV, radiation, etc. When used in combination with other unsaturated diene rubbers such as NR, SBR, BR, NBR, and CR, EPDM can function as a polymeric antioxidant or anti-aging agent. - Excellent chemical resistance.
Resist to acid, alkali, detergent, animal and vegetable oil, alcohol, ketone, etc. - Excellent insulation performance
Volume resistivity 1016Q/cm, breakdown voltage 30～40MV/m, dielectric constant (1kHz, 20°C) 2.27. - Applicable temperature range
The minimum use temperature is -40 ~ -60 ° C, can be used at 130 ° C for a long time.