EPR (Ethylene Propylene Rubber) thiab EPDM (Ethylene Propylene Diene Monomer) yog cov elastomers zoo sib xws, tab sis lawv muaj qee qhov sib txawv ntawm cov khoom, cov khoom, thiab kev siv. Nov yog qhov kev sib piv ntxaws:
| Feature | EPR (Ethylene Propylene Roj Hmab) | EPDM (Ethylene Propylene Diene Monomer) |
|---|---|---|
| Kev sib xyaw | Copolymer ntawm ethylene thiab propylene (tsis muaj diene) | Terpolymer ntawm ethylene, propylene, thiab diene monomer |
| Unsaturation | Saturated (tsis muaj ob daim ntawv cog lus) | Muaj me me ntawm unsaturation los ntawm diene, tso cai rau vulcanization |
| Curing / Vulcanization | Nws tuaj yeem kho nrog peroxide | Nws tuaj yeem kho nrog sulfur lossis peroxide; sulfur curing ua tau vim muaj cov ntsiab lus ntawm cov khoom noj |
| Huab cua / Ozone Resistance | Zoo heev, tab sis me ntsis tsawg dua EPDM | Kev tiv thaiv siab heev rau tshav kub, ozone, thiab UV |
| Thaum tshav kub kub Resistance | Nruab nrab, feem ntau mus txog ~ 120 degree | Siab, mus txog ~ 150℃nyob ntawm kev tsim |
| Mechanical Properties | Zoo yooj thiab elongation, me ntsis qis zog tensile | Zoo heev elasticity, tensile zog, thiab abrasion kuj |
| Cov ntawv thov siv | Hlau thiab cable rwb thaiv tsev, hoses, automotive seals | ru tsev membranes, huab cua seals, gaskets, automotive weatherstripping |
| Nqi | Feem ntau me ntsis pheej yig dua EPDM | Me ntsis kim dua vim cov ntsiab lus diene thiab vulcanization xaiv |
| Tshuaj tiv thaiv | Resistant rau dej, acids, thiab alkalis | Cov tshuaj tiv thaiv zoo sib xws, tab sis zoo dua ozone thiab huab cua tsis kam |
Cov ntsiab lus:
EPRfeem ntau yog siv qhov chaw tshuaj lom neeg thiab hluav taws xob tiv thaiv tseem ceeb, xws li rwb thaiv tsev thiab hoses.
EPDMNws yog qhov zoo dua rau kev siv sab nraum zoov uas xav tau huab cua zoo, ozone, thiab UV tsis kam, zoo li lub ru tsev thiab cov ntsaws ruaj ruaj.
Qhov sib txawv tseem ceeb yog qhovDiene monomer hauv EPDM, uas tso cai rau sulfur vulcanization thiab muab zoo elasticity thiab durability sab nraum zoov.
