Ihe ndị a na-ahụkarị maka rọba——Ihe e ji mara EPDM
Uru:
Nguzogide ịka nká dị mma nke ukwuu, iguzogide ihu igwe, mkpuchi eletriki, iguzogide nchara kemịkalụ na mgbanwe mmetụta.
Ihe ọghọm:
Ọsọ ọgwụgwọ nwayọ nwayọ; Ọ na-esiri ike ịgwakọta ya na roba ndị ọzọ na-enweghị afọ ojuju, njikọta onwe na njikọta ibe ha adịghịkwa mma nke ukwuu, yabụ arụmọrụ nhazi adịghị mma.
Ningbo Yokey Automotive Parts Co., Ltd na-elekwasị anya n'ịdozi nsogbu ihe eji eme roba nke ndị ahịa na imepụta usoro ihe eji eme ihe dị iche iche dabere na ọnọdụ ngwa dị iche iche.
Njirimara: nkọwa
1. Njupụta dị ala na njupụta dị elu
Ethylene propylene roba bụ ụdị roba nwere obere njupụta nke 0.87. Na mgbakwunye, enwere ike ijupụta nnukwu mmanụ ma tinye ihe ndị na-ejupụta ya, nke nwere ike ibelata ọnụ ahịa ngwaahịa roba ma mejupụta ọnụ ahịa dị elu nke roba ethylene propylene roba. Na mgbakwunye, maka roba ethylene propylene nke nwere uru Mooney dị elu, ike anụ ahụ na nke mekaniki mgbe e mechara ya nke ọma agaghị ebelata nke ukwuu.
2. Mgbochi ịka nká
Roba Ethylene propylene nwere ezigbo iguzogide ihu igwe, iguzogide ozone, iguzogide okpomọkụ, iguzogide acid na alkali, iguzogide uzuoku mmiri, nkwụsi ike agba, arụmọrụ eletriki, njupụta mmanụ na mmụba okpomọkụ ụlọ. Enwere ike iji ngwaahịa roba Ethylene propylene ruo ogologo oge na 120 ℃, enwere ike iji ya nwa oge ma ọ bụ mgbe ụfọdụ na 150 – 200 ℃. Enwere ike ịbawanye okpomọkụ ojiji site na itinye antioxidant kwesịrị ekwesị. Enwere ike iji EPDM crosslinked na peroxide n'ọnọdụ siri ike. Mgbe mkpokọta ozone nke EPDM bụ 50 ppm na oge ịgbatị bụ 30%, EPDM nwere ike iru awa 150 na-enweghị mgbawa.
3. Mgbochi ire ere
N'ihi enweghị polarity na obere enweghị afọ ojuju nke roba ethylene propylene, ọ na-eguzogide ọgwụ kemịkalụ dị iche iche dịka mmanya, acid, alkali, oxidant, refrigerant, saterant, mmanụ anụmanụ na akwụkwọ nri, ketone na mmanụ; Agbanyeghị, ọ naghị akwụsi ike na ihe mgbaze abụba na aromatic (dịka petrol, benzene, wdg) na mmanụ mineral. Arụmọrụ ya ga-ebelatakwa n'okpuru ọrụ ogologo oge nke acid concentrated. Na ISO/TO 7620, a na-anakọta data gbasara mmetụta nke ihe fọrọ nke nta ka ọ bụrụ kemịkalụ gas na mmiri mmiri 400 na ihe onwunwe nke rọba dị iche iche, a na-akọwapụtakwa ọkwa 1-4 iji gosi mmetụta ha. Mmetụta nke kemịkalụ corrosion na ihe onwunwe nke rọba bụ ndị a:
Mmetụta nke Ọkwa Ọzịza Olu/% Mbelata Ike na Njirimara
1<10<10 Obere ma ọ bụ ọ dịghị
2 10-20 <20 pere mpe
3 30-60<30 Ọkara
4>60>30 dị njọ
4. Mgbochi uzuoku mmiri
EPDM nwere ezigbo iguzogide uzuoku ma a na-eme atụmatụ na ọ ka mma karịa iguzogide okpomọkụ ya. N'ime uzuoku a na-ekpo oke ọkụ nke 230 ℃, ọdịdị ya anaghị agbanwe mgbe ihe fọrọ nke nta ka ọ bụrụ awa 100 gachara. Agbanyeghị, n'otu ọnọdụ ahụ, ọdịdị nke roba fluorine, roba silicon, roba fluorosilicone, roba butyl, roba nitrile na roba eke mebiri nke ukwuu n'ime obere oge.
5. Mgbochi mmiri ọkụ gabigara ókè
Ethylene propylene roba nwekwara ezigbo iguzogide mmiri ọkụ, mana ọ nwere njikọ chiri anya na sistemụ vulcanization niile. Njirimara mekaniki nke ethylene propylene roba (EPR) nke e ji dimorphine disulfide na TMTD mee agbanweghị obere mgbanwe mgbe e mikpuru ya na mmiri ọkụ 125 ℃ ruo ọnwa 15, ọnụego mmụba olu ahụ dịkwa naanị 0.3%.
6. Arụmọrụ eletriki
Ethylene propylene roba nwere ezigbo ihe mkpuchi eletriki na iguzogide corona, ihe onwunwe eletriki ya dịkwa mma karịa ma ọ bụ dị nso na nke styrene butadiene roba, chlorosulfonated polyethylene, polyethylene na cross-linked polyethylene.
7. Nkwụsi ike
Ebe ọ bụ na roba ethylene propylene enweghị ihe ndị na-anọchi anya polar n'ime nhazi molekul ya na ike njikọ molekul dị ala, agbụ ígwè molekul ya nwere ike ịnọgide na-enwe mgbanwe n'ọtụtụ ebe, nke abụọ karịa roba eke na roba cis polybutadiene, ma ka nwere ike ịnọgide na-enwe ya n'okpomọkụ dị ala.
8. Nrapado
N'ihi enweghị otu ndị na-arụ ọrụ na nhazi molekul nke roba ethylene propylene, ike njikọ ahụ dị obere, roba ahụ dịkwa mfe ịgbasa, yabụ njikọta onwe ya na njikọta ibe ya adịghị mma nke ukwuu.
Oge ozi: Ọktoba-10-2022