EPDM rubber mat is a terpolymer of ethylene, propylene, and non-conjugated diolefins, which began commercial production in 1963. Among all rubbers, EPDM has the lowest specific gravity. It can absorb large amounts of fillers and oils without affecting its properties much. Therefore, it is possible to make low-cost rubber compounds.

Here we look at EPDM rubber this material has what excellent performance?

1, aging resistance: EPDM rubber has excellent weather resistance, ozone resistance, heat resistance, acid and alkali resistance, water vapor resistance, color stability, electrical properties, oil-filled and room temperature fluidity.

2, low density and high fillability: EPDM rubber is a low density rubber. Plus a large number of oil and filler can be added, thus reducing the cost of rubber products, to make up for the high price of EPDM rubber raw rubber shortcomings, and the high value of EPDM rubber, high filler after the physical and mechanical properties of the reduction is not large.

3, water vapor resistance: EPDM rubber has excellent water vapor resistance and better than its heat resistance. In 230 ℃, no change in the appearance of superheated steam.

4, corrosion resistance: because of the low saturation of EPDM rubber, and thus a variety of polar chemicals such as alcohols, acids, alkalis, oxidizers, refrigerants, detergents, animal and vegetable oils, ketones and grease have good resistance; but in lipid and aromatic solvents (such as gasoline, benzene, etc. and mineral oil stability is poor. In the long-term action of concentrated acid performance is also to decline.

5, electrical properties: EPDM rubber has excellent electrical insulation properties and corona resistance, electrical properties better than or close to styrene butadiene rubber, chlorosulfonated polyethylene, polyethylene and cross-linked polyethylene.

6, superheated water resistance: EPDM rubber superheated water resistance is also good, but closely related to the vulcanization system used. Dithiodimorpholine, TMTD for the vulcanization system of ethylene propylene rubber, in hot water after 1-5 months of immersion, mechanical properties change very little, volume expansion rate of only 0.3%.

7, adhesion: EPDM rubber due to the lack of active groups in the molecular structure, low cohesion energy, coupled with the rubber easy to spray frost, self-adhesive and mutual adhesion is very poor.

8, elasticity: EPDM rubber molecular structure without polar substituents, molecular cohesion energy is low, the molecular chain can be maintained in a wide range of flexibility, second only to natural rubber and paraben rubber, and at low temperatures can still be maintained.