Ihe eji eme rọba a na-ahụkarị—— njirimara EPDM
Uru:
Nguzogide ịka nká dị mma, nguzogide ihu igwe, mkpuchi ọkụ eletrik, nguzogide corrosion kemịkalụ na mmetụta elasticity.
Ihe ọghọm:
Ọsọ ọgwụgwọ dị nwayọ;Ọ na-esiri ike ịgwakọta ya na rubbers ndị ọzọ na-adịghị mma, na njide onwe onye na ntinye aka dị nnọọ njọ, ya mere nhazi nhazi adịghị mma.
Ningbo Yokey Automotive Parts Co., Ltd na-elekwasị anya n'ịdozi nsogbu ihe onwunwe nke ndị ahịa na ịmepụta usoro ihe onwunwe dị iche iche dabere na ọnọdụ ngwa dị iche iche.
Njirimara: nkọwa
1. Njupụta dị ala na njuputa dị elu
Ethylene propylene roba bụ ụdị roba nwere obere njupụta nke 0.87.Tụkwasị na nke ahụ, a ga-ejupụta nnukwu mmanụ ma tinye ihe ndị na-emepụta ihe, nke nwere ike ibelata ọnụ ahịa ngwaahịa rọba ma mee ka ọnụ ahịa dị elu nke raw rubber nke ethylene propylene roba.Tụkwasị na nke ahụ, maka ethylene propylene roba nwere uru Mooney dị elu, ike anụ ahụ na nke arụ ọrụ mgbe ejuputa dị elu agaghị ebelata nke ukwuu.
2. Nguzogide ịka nká
Ethylene propylene roba nwere ezigbo nguzogide ihu igwe, nguzogide ozone, nguzogide okpomọkụ, acid na alkali, mgbochi mmiri, nkwụsi ike agba, arụmọrụ eletriki, ndochi mmanụ na mmiri ọkụ ụlọ.Enwere ike iji ngwaahịa roba Ethylene propylene mee ogologo oge na 120 ℃, a pụkwara iji ya mee ihe na nkenke ma ọ bụ obere oge na 150-200 ℃.Enwere ike ịbawanye okpomọkụ nke ojiji site na ịgbakwunye antioxidant kwesịrị ekwesị.Enwere ike iji EPDM gafere na peroxide n'okpuru ọnọdụ siri ike.Mgbe ntinye ozone nke EPDM bụ 50 pphm na oge mgbatị ahụ bụ 30%, EPDM nwere ike iru 150 h na-enweghị mgbawa.
3. Nguzogide corrosion
N'ihi enweghị polarity na ala unsaturation nke ethylene propylene roba, ọ nwere ezigbo nguzogide dị iche iche pola chemicals dị ka mmanya, acid, alkali, oxidant, refrigerant, detergent, anụmanụ na akwukwo nri mmanụ, ketone na griiz;Otú ọ dị, ọ nwere nkwụsi ike na-adịghị mma na ihe mgbaze abụba na aromatic (dị ka mmanụ ụgbọala, benzene, wdg) na mmanụ ịnweta.Arụmọrụ a ga-adakwa n'okpuru omume ogologo oge nke acid gbadoro ụkwụ.Na TS ISO / TO 7620, a na-anakọta data na nsonaazụ ihe fọrọ nke nta ka ọ bụrụ 400 kemịkalụ ikuku na-emebi emebi na kemịkalụ mmiri dị iche iche, yana akara 1-4 ka akọwapụtara nsonaazụ ha.Mmetụta nke kemịkalụ corrosive na njirimara nke rubbers bụ ndị a:
Mmetụta nke Ọzịza Olu Ọzịza Ọsọ/% Mbelata Ike na Njirimara
1 <10 <10 Obere ma ọ bụ enweghị
2 10-20 <20 pere mpe
3 30-60 <30 Ọkara
4>60>30 dị njọ
4. Mmiri na-eguzogide mmiri
EPDM nwere ezigbo nguzogide uzuoku ma na-eche na ọ dị elu karịa nguzogide okpomọkụ ya.Na uzuoku dị ọkụ nke 230 ℃, ọdịdị ahụ anaghị agbanwe mgbe ihe fọrọ nke nta ka ọ bụrụ 100 awa.Otú ọ dị, n'okpuru otu ọnọdụ ahụ, ọdịdị nke roba fluorine, silicon rubber, fluorosilicone rubber, butyl rubber, roba nitrile na roba eke dara nke ukwuu n'ime obere oge.
5. Nguzogide mmiri dị ọkụ
Ethylene propylene roba nwekwara ezigbo nguzogide mmiri na-ekpo ọkụ, mana ọ nwere njikọ chiri anya na sistemu vulcanization niile.Ihe eji arụ ọrụ nke ethylene propylene roba (EPR) vulcanized na dimorphine disulfide na TMTD gbanwere ntakịrị mgbe etinyere ya n'ime mmiri 125 ℃ ekpo oke ọkụ maka ọnwa 15, yana mmụba olu bụ naanị 0.3%.
6. Ọrụ eletriki
Ethylene propylene roba nwere ezigbo mkpuchi eletriki na nguzogide corona, na ihe ọkụ eletrik ya dị elu karịa ma ọ bụ nso nke rọba styrene butadiene, chlorosulfonated polyethylene, polyethylene na cross-linked polyethylene.
7. Ngbanwe
N'ihi na ethylene propylene roba enweghị polar substituents na ya molekụla Ọdịdị na obere molekụla njikọ ike, ya molekụla yinye nwere ike ịnọgide na-enwe mgbanwe na a dịgasị iche iche, nke abụọ naanị eke roba na cis polybutadiene roba, ma ka nwere ike ịnọgide na-enwe na obere okpomọkụ.
8. Adhesion
N'ihi enweghị otu ndị na-arụsi ọrụ ike n'ime usoro ihe omimi nke ethylene propylene roba, ike na-ejikọta ike dị ala, na roba dị mfe ịgbasa, ya mere njigide onwe onye na nkwekọ ọnụ dị nnọọ njọ.
Oge nzipu: Ọktoba 10-2022