Bere a nneɛma a wɔde yɛ tae no bo kɔ soro no, ɛka a wɔbɔ wɔ bias tae ho no kɔ soro. sɛnea ɛbɛyɛ a wɔbɛtew ka a wɔbɔ wɔ nneɛma a wɔyɛ ho no so, ɛma rɔba nneɛma a wɔde yɛ bias tae a wɔyɛ no yɛ kɛse na ɛtew nneɛma a ɛboa a wɔde di dwuma no so no, ɛyɛ adwuma a ɛsɛ sɛ wɔn a wɔyɛ nnuru a wɔde yɛ nneɛma no tu mpɔn{1}} rɔba nneɛma a wɔde di dwuma ma tire a wɔde yɛ nneɛma a wɔde yɛ nneɛma a wɔde yɛ nneɛma a wɔde bɔ wɔn ti no yɛ nea wɔde ma tire ne nsu a wɔde yɛ nneɛma a wɔde di dwuma titiriw no. pad ne vulcanized nsu tae ano ano pad yɛ de di dwuma wɔ bere tenten bere tenten ɔhyew ne nhyɛso kɛse tebea, rɔba compound a wɔde di dwuma no hia sɛ ɛwɔ yiye ɔhyew-resistant oxygen aging su ne compression set resistance. mprempren, mfitiase raw ade ma rɔba nneɛma ma production of bias tare yɛ titiriw abɔde rɔba (nr). retiponed, it has poor heat, it has the opoor of the heast and whorow Nneɛma a wɔyɛ.
Sunnyjoint EPDM yɛ copolymer a ethylene, propylene ne kakraa bi a ɛnyɛ conjugated diene. ɛyɛ low-unsaturated rɔba a ɛkyɛn ɔhyew resistance, ozone resistance ne wim tebea a ɛko tia sɛ wɔde toto nr{3}} nanso, epdm nanso, slow vulcanization rates ne adhesion rate{4} its newd adhesion{4} addenthesion{ Good. Wɔ tebea horow bi mu no, EPDM dodow bi a wɔde ka ho wɔ NR mu no ntumi mma rɔba aduru no yɛ adwuma yiye nko, na mmom ɛbɛma ɔhyew a ɛko tia ne wim tebea a ɛko tia no atu mpɔn kɛse wɔ vulcanizate.