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The difference of rubber materials between of NBR with EPDM

Views: 4259     Author: Hardy He     Publish Time: 2016-08-30      Origin: Site

The difference of rubber materials between of NBR with EPDM

NBR has a better oil resistant compared with EPDM, but EPDM has a good wear resistance, aging resistant and heat-resisting. EPDM is usually made into water pipe.
NBR is an  unsaturated carbon rubber,  which is polymer made from acrylonitrile and butadiene. The acrylonitrile amount from low to high, and oil resistant will enhance and cold resistance will decline during the producing.
The main feature of NBR is oil resistance. Good resistant and tolerant to petroleum base and non-polar solvent, however, not good resistant to polar oil and polar solvent
 ood antistatic property 
Bad Ozone resistance
NBR can be consistence with PVC, POM and nylon, and could made into polymer materials
Common NBR temperature:-20~120, low-temperature resistant NBR can work in -50 environment.
EPR is made from the ethylene and propylene, which have two types: EPM and EPDM
ozone aging resistance
Weather aging resistance
heat resistance
 The above property is the best one in commonly used rubber. EPDM Still has the other property:
Good water resistant, good super-heated water and good  steam resistance
Good chemical resistant
(EPR chemically nonreactive with most of the  chemical because of its  stability and nonpolar, which is incompatible or a little compatible with polar substance.  alcohol-resistant, acid-resisting,  strong alkali, antioxidant,  strong detergents and so on .)
NBR is a little softer than EPDM. And EPDM rubber also have different smell

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