EPDM roj hmab (Ethylene Propylene diene Monomer Roj Hmab) yog hom hluavtaws hluavtaws hluav taws xob uas siv tau ntau daim ntawv thov. Dienes siv hauv kev tsim khoom ntawm Epdm Rubbers yog Ashylidene Sxebornene (Enb), DCPD), thiab VNB NorBornene (VNB). 4-8% ntawm cov monomers yog feem ntau siv. EPDM yog cov roj hmab M-Pawg nyob hauv Astm qauv D-1418; MAS KAWM NTAWV muaj elastomers muaj cov saw satal ntawm polyethylene hom (m ua los ntawm ntau dua cov sij hawm polymethylene). EPDM yog tsim los ntawm ethylene, propylene, thiab ib tug diene comomoner uas ua rau cov neeg hla ntawm cov leej faj. Cov neeg txheeb ze thaum EPDM yog EPRM yog urylene propylene roj hmab (pab tau rau high-voltinkle Cles)
Raws li nrog feem ntau rubbers, EPDM ib txwm siv sib xyaw nrog cov roj hmab dub thiab muaj cov roj hmab carbonate thiab muaj cov tshuaj pulaffinate, thiab muaj cov tshuaj txhuam hniav ua kom muaj txiaj ntsig nkaus xwb thaum hla kev hla. Crosslinking feem ntau yog siv qhov chaw ntawm vulcanisation nrog cov leej faj, tab sis kuj tseem ua tiav nrog parsoxides (rau cov khoom kub ua kom zoo dua) lossis nrog cov khoom siv Phenolic zoo dua. High-zog hluav taws xob xws li los ntawm cov kab teeb hluav taws xob qee zaum siv rau kev ua cov ua npuas thiab hlau thiab cable.
Lub Sijhawm Post: Lub Tsib Hlis-15-2023