What about the Poisson's ratio and modulus of elasticity of three yuan ethylene propylene rubber (EPDM)?
Three yuan ethylene propylene rubber is ethylene, propylene and non conjugated diene three yuan copolymer, began commercial production in 1963. The consumption of the whole world is 800 thousand tons every year. The most important feature of EPDM is its superior oxidation resistance, ozone resistance and corrosion resistance. Because three yuan ethylene propylene rubber belongs to polyolefin family, it has excellent curing property. Of all rubbers, EPDM has the lowest specific gravity. It absorbs large amounts of fillers and oils and has little effect on properties. Therefore, rubber compounds with low cost can be made.
Three yuan ethylene propylene is ethylene, propylene and non conjugated diene three copolymer. Diene has a special structure, only one of the two keys to copolymerization, unsaturated double bond, mainly as the chain. Another unsaturated polymer will not become the main chain and will only become side chains. The main polymer chain of three yuan ethylene propylene is completely saturated. This property allows three yuan ethylene propylene to resist heat, light, oxygen, especially ozone. Three yuan propylene is essentially non-polar, resistant to polar solutions and chemicals, low water absorption, and good insulation properties.
The Poisson's ratio and modulus of elasticity of three yuan ethylene propylene rubber (EPDM) are approximately:Rubber elastic modulus 0.0078GPa, Poisson's ratio 0.47.
