What is EPDM rubber?
EPDM(Ethylene Propylene Diene tripolymer) rubber is made by copolymerizing ethylene and propylene in solution. It is a saturated polymer.
What are the characteristics?
EPDM rubber has excellent weather resistance, aging resistance, chemical resistance, and electrical insulation. It is flexible and impact resistant, and the most important features are:
- Good filling
EPDM has a low density of 0.87, which means that fillers can be added to reduce costs to make up for the high price of EPDM. Fillers do not seriously affect mechanical properties.
EPDM rubber has excellent weather resistance, ozone resistance, heat resistance, acid and alkali resistance. It can work at 120℃ for a long time and 150-200℃ for a short time. Adding certain antioxidants can increase the working temperature. Ozone concentration 50pphm, stretching 30%, EPDM rubber can be used for more than 150 hours without cracking.
- Corrosion resistance
EPDM rubber lacks polarity and has low unsaturation. Therefore, it is resistant to polar chemicals such as alcohols, acids, bases, oxidants, refrigerants, ketones, and fats.
- Steam resistance
EPDM rubber has excellent steam and heat resistance. No change in appearance after 230°C superheated steam test for 100 hours. While other rubber nitrile rubber will deteriorate in appearance under the same conditions.
- What are the applications
Because of its excellent performance, it is widely used in wires, gaskets, seals, waterproof materials, protective sleeves, hoses and rubber sheets in the fields of automobile, shrinkage, military industry, aerospace and other fields.