1. Njupụta dị ala na njuputa dị elu
Ethylene-propylene roba bụ roba nwere obere njupụta, nke nwere njupụta nke 0.87.Na mgbakwunye, ọ nwere ike jupụta na nnukwu mmanụ na EPDM.
Ịgbakwunye ihe ndochi nwere ike ibelata ọnụ ahịa ngwaahịa rọba ma mejupụta ọnụ ahịa dị elu nke ethylene propylene roba raw roba.Maka roba ethylene propylene nwere uru Mooney dị elu, ike anụ ahụ na arụ ọrụ nke njuputa dị elu adịghị ebelata nke ukwuu.
2. Nguzogide ịka nká
Ethylene-propylene roba nwere ezigbo nguzogide ihu igwe, nguzogide ozone, nguzogide okpomọkụ, acid na alkali na-eguzogide mmiri, nkwụsi ike nke agba, ihe ọkụ eletrik, ihe na-ejuputa mmanụ na mmiri na-ekpo ọkụ na ụlọ okpomọkụ.Enwere ike iji ngwaahịa rọba Ethylene-propylene mee ogologo oge na 120 Celsius C, a pụkwara iji ya mee nkenke ma ọ bụ obere oge na 150-200C.Ịgbakwunye antioxidants kwesịrị ekwesị nwere ike ime ka ọnọdụ okpomọkụ ya dịkwuo elu.Enwere ike iji EPDM rọba gafere na peroxide n'okpuru ọnọdụ siri ike.EPDM roba nwere ike iru ihe karịrị 150h na-enweghị mgbawa n'okpuru ọnọdụ nke ozone ịta 50pphm na 30% ịgbatị.
3. Nguzogide corrosion
N'ihi na roba ethylene propylene enweghị polarity na ọkwa dị ala nke unsaturation, ọ nwere ezigbo nguzogide kemịkalụ pola dị iche iche dị ka alcohols, acids, alkalis, oxidants, refrigerants, detergents, mmanụ anụmanụ na akwukwo nri, ketones na griiz.Mana ọ nwere nkwụsi ike na-adịghị mma na ihe mgbaze abụba na aromatic (dị ka mmanụ ụgbọala, benzene, wdg) na mmanụ ịnweta.Ọrụ a ga-ebelatakwa n'okpuru omume ogologo oge nke acid gbadoro ụkwụ.Na ISO / TO 7620, ihe fọrọ nke nta ka ọ bụrụ ụdị 400 na-emebi emebi na kemịkalụ mmiri mmiri anakọtara ozi gbasara akụrụngwa rọba dị iche iche, wee kọwaa ọkwa 1-4 iji gosipụta ogo ọrụ ha yana mmetụta kemịkalụ na-emebi emebi na akụrụngwa roba.
Ọkwa ogo Ọzịza Ọzịza/% uru mbelata ike ike mmetụta na arụmọrụ
1 <10 <10 obere ma ọ bụ mba
2 10-20 <20 pere mpe
3 30-60 <30 ọkara
4>60>30 siri ike
4. Mmiri na-eguzogide mmiri
Ethylene-propylene roba nwere ezigbo uzuoku mmiri na-eguzogide ma na-eche na ọ dị mma karịa nguzogide okpomọkụ ya.N'ime uzuoku dị ọkụ nke 230 ℃, ọdịdị EPDM agbanwebeghị mgbe ihe fọrọ nke nta ka ọ bụrụ 100h.Otú ọ dị, n'okpuru otu ọnọdụ ahụ, rọba fluorine, rọba silicone, rọba fluorosilicone, rubber butyl, rọba nitrile, na roba eke nwere mbelata dị ukwuu n'ọdịdị ka obere oge gasịrị.
5. Mmiri na-eguzogide mmiri
Ethylene-propylene roba nwekwara nguzogide mmiri dị oke ọkụ, mana ọ nwere njikọ chiri anya na sistemu vulcanization niile.Ethylene-propylene roba na dimorpholine disulfide na TMTD dị ka vulcanization usoro, mgbe a na-emikpu na superheated mmiri na 125 ° C maka ọnwa 15, n'ibu Njirimara na-agbanwe nnọọ obere, na olu mgbasawanye ọnụego bụ naanị 0,3%.
6. Ọrụ eletriki
Ethylene-propylene roba nwere ọmarịcha ihe mkpuchi ọkụ eletrik na nguzogide corona, yana akụrụngwa eletrik ya dị mma karịa ma ọ bụ nso nke rọba styrene-butadiene, chlorosulfonated polyethylene, polyethylene na cross-linked polyethylene.
7. Mgbanwe
N'ihi na ọ dịghị polar substituents na molekụla Ọdịdị nke ethylene-propylene roba, na cohesive ike nke molekul dị ala, na molekul yinye nwere ike ịnọgide na-enwe mgbanwe na a dịgasị iche iche, nke abụọ naanị eke negotiable na butadiene roba, na ka nwere ike ịbụ. nọgidere na-enwe obere okpomọkụ.
8. Adhesion
Ethylene-propylene roba enweghị otu ndị na-arụsi ọrụ ike n'ihi usoro ihe omimi ya ma nwee ike imekọ ihe ọnụ.Tụkwasị na nke ahụ, rọba dị mfe oge ntoju, na njide onwe ya na nkwekọ ọnụ dị nnọọ njọ.
Oge nzipu: Nov-17-2021