Epdm(Ethylene Propylene diene Monomer) yog cov roj hmab siv hluavtaws hluav taws xob hluavtaws nrog cov yam ntxwv hauv qab no:
Cov Qauv Tshuaj
Tus txha qaum: Solatated carbon saw tsim los ntawm ethylene (c₂h₄) thiab propylene (c₃h₆ (muab cov kev laus tiv thaiv zoo.
Sab Nquag: Diene monomers (piv txwv li, ENB, DCPD) muab cov qauv sib txawv: - (ch}}} -} lu)) Y -.
Cov Khoom Siv Tseem Ceeb
Kub tiv thaiv: {{- 50 Qib rau 150 Qib (siv tas mus li), luv luv-lub sij hawm luv nqi txog 180 degree.
Huab Cua Kuj: Tsis kam UV, ozone, thiab oxidation, nrog sab nraum zoov kev pabcuam lub neej ntev tshaj 20 xyoo (piv txwv li, vov tsev rollbranes).
Kev Rwb Hluav Taws Xob: Volume resistivity >10¹⁵ ω ω ω. Haum rau qhov siab-} voltage cable rwb thaiv tsev cable.
Dej tiv: Dej nqus<0.5% (ASTM D570 test).
Cov Ntawv Thov
Automotive: Qhov rooj ntsaws ruaj ruaj, cov hos rading radiator (tiv taus coolant castant cepant ethylene glycol).
Kev tsa tsev: Choj expansion sib koom tes seev suab, kab hlau rhuav cov gaskets (UV- tiv taus).
Lub zog: Pawg Vaj Huam Sib Luag Cheeb Tsam Ntsej Muag (TIV CUA KUB CUA KUB THIAB VASTION).
Piv nrog lwm cov ntaub ntawv
| Ntiag tug | Epdm | Leeg | Silicone |
|---|---|---|---|
| Temp. Qho deb | -50 ~ 150 Qib | -30 ~ 120 degree | -60 ~ 230 degree |
| Roj ua | ★☆☆☆☆ | ★★★★★ | ★★☆☆☆ |
| Tus nqi | Nruab nrab ($ 5 ~ 10 / kg) | Tsawg ($ 3 ~ 6 / kg) | Siab ($ 20 ~ 50 / kg) |
Kev txwv
Cov roj tsis zoo: Unsuitable for fuel/lubricant exposure (swelling rate >50%).
Complex vulcanization: Yuav tsum muaj peroxide lossis sulphur kho cov tshuab, nrog kev ua lag luam ntev dua.