Izinto ezivamile zenjoloba——Isici se-EPDM

Izinto ezivamile zenjoloba——Isici se-EPDM

Inzuzo:
Ukumelana nokuguga okuhle kakhulu, ukumelana nesimo sezulu, ukwahlukanisa ugesi, ukumelana nokugqwala kwamakhemikhali kanye nokunwebeka komthelela.

Ububi:
Ijubane lokuphulukisa eliphansi;Kunzima ukuhlanganisa namanye amarabha angagcwalisiwe, futhi ukuzinamathela nokunamathelana kumbi kakhulu, ngakho-ke ukusebenza kokucubungula akukuhle.

I-Ningbo Yokey Automotive Parts Co., Ltd igxile ekuxazululeni izinkinga zezinto zenjoloba zamakhasimende kanye nokuklama ukwakheka kwezinto ezihlukene ngokusekelwe ezimweni ezihlukene zohlelo lokusebenza.

Izakhiwo: imininingwane
1. Ubuningi obuphansi nokugcwalisa okuphezulu
Irabha ye-ethylene propylene iwuhlobo lwerabha enesisindo esiphansi esingu-0.87.Ngaphezu kwalokho, inani elikhulu lamafutha lingagcwaliswa futhi kufakwe izigcwalisi, ezinganciphisa izindleko zemikhiqizo yenjoloba futhi zenze intengo ephezulu yerabha eluhlaza yerabha ye-ethylene propylene.Ngaphezu kwalokho, irabha ye-ethylene propylene enenani eliphakeme le-Mooney, amandla angokwenyama kanye nemishini ngemva kokugcwalisa okuphezulu ngeke ancishiswe kakhulu.

2. Ukumelana nokuguga
Irabha ye-ethylene propylene inokumelana okuhle kakhulu kwesimo sezulu, ukumelana ne-ozone, ukumelana nokushisa, ukumelana ne-asidi ne-alkali, ukumelana nomhwamuko wamanzi, ukuzinza kombala, ukusebenza kukagesi, ukugcwaliswa kwamafutha kanye nokushisa kwegumbi.Imikhiqizo yerabha ye-ethylene propylene ingasetshenziswa isikhathi eside ku-120 ℃, futhi ingasetshenziswa isikhashana noma ngezikhathi ezithile ku-150 - 200 ℃.Izinga lokushisa lokusebenzisa linganyuswa ngokungeza i-antioxidant efanelekile.I-EPDM exhunywe nge-peroxide ingasetshenziswa ngaphansi kwezimo ezinzima.Lapho ukuhlushwa kwe-ozone ye-EPDM kungu-50 phm futhi isikhathi sokwelula singama-30%, i-EPDM ingafinyelela ku-150 h ngaphandle kokuqhekeka.

3. Ukumelana nokugqwala
Ngenxa yokuntuleka kwe-polarity kanye ne-unsaturation ephansi yerabha ye-ethylene propylene, inokumelana okuhle namakhemikhali e-polar ahlukahlukene njengotshwala, i-asidi, i-alkali, i-oxidant, isiqandisi, okokuhlanza, amafutha ezilwane nemifino, i-ketone namafutha;Kodwa-ke, inokungaqini kahle kwezincibilikisi ezinamafutha nezinephunga elimnandi (ezifana nophethiloli, ibenzene, njll.) namafutha amaminerali.Ukusebenza kuzokwehla futhi ngaphansi kwesenzo sesikhathi eside se-asidi egxilile.Ku-ISO/TO 7620, idatha yemiphumela cishe yamakhemikhali egesi egqwalayo nama-400 ezakhi zamarabha ahlukahlukene iyaqoqwa, futhi amabanga 1-4 acacisiwe ukukhombisa imiphumela yawo.Imiphumela yamakhemikhali agqwalayo ezakhiweni zamarabha imi kanje:

Umthelela Wezinga Lokuvuvukala Kwevolumu Yebanga/% Ukuncishiswa Kokuqina Ezimpahleni
1<10<10 Kancane noma akukho
2 10-20<20 encane
3 30-60<30 Medium
4>60>30 serious

4. Ukumelana nomhwamuko wamanzi
I-EPDM inokumelana nomusi okuhle kakhulu futhi kulinganiselwa ukuthi iphakeme kunokumelana nokushisa kwayo.Ku-230 ℃ umusi oshisa kakhulu, ukubukeka akushintshi ngemva kwamahora acishe abe yi-100.Kodwa-ke, ngaphansi kwezimo ezifanayo, ukubukeka kwerabha ye-fluorine, irabha ye-silicon, irabha ye-fluorosilicone, irabha ye-butyl, irabha ye-nitrile nerabha yemvelo kwawohloka kakhulu ngesikhathi esifushane.

5. Ukumelana namanzi ashisayo
Irabha ye-ethylene propylene nayo inokumelana okuhle namanzi ashisayo, kodwa ihlobene eduze nazo zonke izinhlelo ze-vulcanization.Izakhiwo zemishini yerabha ye-ethylene propylene (EPR) eshiswe nge-dimorphine disulfide kanye ne-TMTD yashintshwa kancane ngemva kokucwiliswa emanzini ashisayo angu-125 ℃ izinyanga ezingu-15, futhi izinga lokunwetshwa kwevolumu lalingu-0.3% kuphela.

6. Ukusebenza kukagesi
Irabha ye-ethylene propylene ine-insulation kagesi enhle kakhulu futhi imelana ne-corona, futhi izakhiwo zayo zikagesi ziphakeme noma zisondele kunezo zenjoloba ye-styrene butadiene, i-chlorosulfonated polyethylene, i-polyethylene kanye ne-polyethylene exhunywe ngokuphambana.

7. Ukuthambekela
Ngenxa yokuthi i-ethylene propylene rubber ayinayo i-polar substituents esakhiweni sayo samangqamuzana kanye namandla aphansi okuhlangana kwamangqamuzana, uchungechunge lwawo lwamangqamuzana lungakwazi ukugcina ukuguquguquka okubanzi, okwesibili kuphela kwerabha yemvelo kanye ne-cis polybutadiene irabha, futhi isengakwazi ukugcina emazingeni okushisa aphansi.

8. Ukunamathela
Ngenxa yokuntuleka kwamaqembu asebenzayo esakhiweni samangqamuzana enjoloba ye-ethylene propylene, amandla okuhlangana aphansi, futhi irabha kulula ukuyifafaza, ngakho-ke ukuzihlanganisa nokunamathelana kubi kakhulu.