Izinto zerabha ezivamile——isici se-EPDM

Izinto zerabha ezivamile——isici se-EPDM

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

Okubi:
Isivinini sokulungisa esihamba kancane; Kunzima ukuhlanganisa nezinye irabha ezingagcwali, futhi ukuzinamathela kanye nokunamathelana kuphansi kakhulu, ngakho ukusebenza kokucubungula kubi.

I-Ningbo Yokey Automotive Parts Co., Ltd igxile ekuxazululeni izinkinga zezinto zerabha zamakhasimende kanye nokuklama ukwakheka kwezinto ezahlukene ngokusekelwe ezimweni ezahlukene zokusetshenziswa.

Izakhiwo: imininingwane
1. Ukuminyana okuphansi kanye nokugcwalisa okuphezulu
Irabha ye-ethylene propylene uhlobo lwerabha olunobuningi obuphansi obungu-0.87. Ngaphezu kwalokho, inani elikhulu lamafutha lingagcwaliswa futhi kufakwe ama-filler, okunganciphisa izindleko zemikhiqizo yerabha futhi kulungise intengo ephezulu yerabha eluhlaza yerabha ye-ethylene propylene. Ngaphezu kwalokho, ngerabha ye-ethylene propylene enenani eliphakeme leMooney, amandla angokomzimba nawomshini ngemva kokugcwalisa okuphezulu ngeke ancishiswe kakhulu.

2. Ukumelana nokuguga
Irabha ye-ethylene propylene inokumelana okuhle kakhulu nesimo sezulu, ukumelana ne-ozone, ukumelana nokushisa, ukumelana ne-asidi ne-alkali, ukumelana nomhwamuko wamanzi, ukuqina kombala, ukusebenza kukagesi, ukugcwaliswa kwamafutha kanye nokugeleza kokushisa kwegumbi. Imikhiqizo yerabha ye-ethylene propylene ingasetshenziswa isikhathi eside ku-120 ℃, futhi ingasetshenziswa isikhashana noma ngezikhathi ezithile ku-150 - 200 ℃. Izinga lokushisa lokusetshenziswa lingakhushulwa ngokungeza i-antioxidant efanele. I-EPDM exhunywe nge-peroxide ingasetshenziswa ngaphansi kwezimo ezinzima. Lapho ukuhlushwa kwe-EPDM kwe-ozone kungu-50 pphm futhi isikhathi sokunwebeka singama-30%, i-EPDM ingafinyelela amahora angu-150 ngaphandle kokuqhekeka.

3. Ukumelana nokugqwala
Ngenxa yokuntuleka kwe-polarity kanye nokungagcwali kahle kwerabha ye-ethylene propylene, inokumelana okuhle namakhemikhali ahlukahlukene e-polar njengotshwala, i-asidi, i-alkali, i-oxidant, i-refrigerant, insipho, uwoyela wezilwane nemifino, i-ketone kanye namafutha; Kodwa-ke, ayinakho ukuzinza okuhle kuma-solvents anamafutha namakha (njengephethiloli, i-benzene, njll.) kanye namafutha amaminerali. Ukusebenza kwayo kuzoncipha ngaphansi kwesenzo sesikhathi eside se-asidi egxilile. Ku-ISO/TO 7620, idatha ngemiphumela yamakhemikhali e-gaseous kanye noketshezi acishe abe ngu-400 abhidlizayo ezimpahleni zamarabha ahlukahlukene iyaqoqwa, kanti amagremu angu-1-4 acacisiwe ukukhombisa imiphumela yawo. Imiphumela yamakhemikhali abhidlizayo ezimpahleni zamarabha yile elandelayo:

Umphumela Wokunciphisa Ukuqina Kwezinga Lokuvuvukala/% Kwezinga Lokuqina Ezimpahleni
1<10<10 Kancane noma akukho lutho
2 10-20<20 encane
3 30-60<30 Okuphakathi
4>60>30 okungathi sína

4. Ukumelana nomhwamuko wamanzi
I-EPDM inokumelana okuhle kakhulu nomusi futhi kulinganiselwa ukuthi ingcono kunokumelana kwayo nokushisa. Kumusi oshiswe kakhulu ongu-230 ℃, ukubukeka akushintshi ngemva kwamahora acishe abe yi-100. Kodwa-ke, ngaphansi kwezimo ezifanayo, ukubonakala kwerabha ye-fluorine, irabha ye-silicon, irabha ye-fluorosilicone, irabha ye-butyl, irabha ye-nitrile kanye nerabha yemvelo kubohloke kakhulu ngesikhathi esifushane.

5. Ukumelana namanzi ashisayo kakhulu
Irabha ye-ethylene propylene nayo inokumelana okuhle namanzi ashisayo kakhulu, kodwa ihlobene eduze nazo zonke izinhlelo ze-vulcanization. Izakhiwo zemishini zerabha ye-ethylene propylene (EPR) evutshiwe nge-dimorphine disulfide kanye ne-TMTD azishintshanga kangako ngemva kokucwiliswa emanzini ashisayo kakhulu angu-125 ℃ izinyanga ezingu-15, kanti izinga lokukhula kwevolumu lalingu-0.3% kuphela.

6. Ukusebenza kukagesi
Irabha ye-ethylene propylene inokushisa okuhle kakhulu kukagesi kanye nokumelana ne-corona, futhi izakhiwo zayo zikagesi ziphakeme noma ziseduze nezerabha ye-styrene butadiene, i-polyethylene e-chlorosulfonated, i-polyethylene kanye ne-polyethylene exhumene.

7. Ukunwebeka
Ngenxa yokuthi irabha ye-ethylene propylene ayinazo izinto ezithatha indawo ye-polar esakhiweni sayo sama-molecule kanye namandla aphansi okuhlangana kwama-molecule, uchungechunge lwayo lwama-molecule lungagcina ukuguquguquka okubanzi, okwesibili kuphela kunerabha yemvelo kanye nerabha ye-cis polybutadiene, futhi lusakwazi ukulondoloza emazingeni okushisa aphansi.

8. Ukunamathela
Ngenxa yokuntuleka kwamaqembu asebenzayo esakhiweni sama-molecule enjoloba ye-ethylene propylene, amandla okuhlangana aphansi, futhi injoloba kulula ukuyifutha, ngakho-ke ukuzinamathela kanye nokunamathelana kuphansi kakhulu.