Indlela yokuthuthukisa ukumelana nokushisa kwerabha?

Ukumelana nokuguga komoya oshisayo noma ukuguga kokushisa kuya ngokuya kubaluleke kakhulu, ikakhulukazi ezinsizeni zezimoto lapho izingxenye zenjoloba zisetshenziswa kakhulu ezindaweni ezimboziwe ezinamazinga okushisa aphezulu. Abakhiqizi bezimoto bazizwele ingcindezi ekhulayo yokuzibophezela empilweni ende yesevisi yezingxenye zabo zenjoloba. Izici zokuguga zokushisa kwe-Anaerobic kanye nezindawo zokushisa nomoya zokuguga zihlukile. Irabha inokumelana nokushisa okungcono, kodwa kungenzeka ingamelani nokuhlaselwa komoyampilo.

Qaphela: Lezi zinqubo zokuhlola ezivamile zingase zingasebenzi esimweni ngasinye. Noma yikuphi okuguquguqukayo okungathuthukisa ukumelana nokuguga komoya noma ukumelana nokushisa kuzothinta ngokuqinisekile ezinye izakhiwo, zibe ngcono noma ezimbi kakhulu.

1. I-Perfluoroelastomer

Uma impahla yenjoloba idingeka ukuze ibe nokumelana nokushisa okuhle kakhulu, kufanele ukhethe irabha ene-perfluorinated. Kubikwa ukuthi izinga lokushisa lokusebenzisa i-perfluoroelastomer lifika ku-316℃.

2. Irabha ye-Fluorine

Irabha ye-Fluorine FKM inokumelana nokushisa okuhle kakhulu, futhi ingasetshenziswa emazingeni okushisa afika ku-260 ℃. Ukuze uqhubeke uqinisa ukumelana nezinga lokushisa eliphezulu kwerabha ye-fluorine, udinga ukukhetha isamukeli se-asidi esilungile (emunca i-asidi), njengomsebenzi ophansi we-magnesium oxide, umsebenzi ophezulu we-magnesium oxide, i-calcium oxide, i-calcium hydroxide, i-zinc oxide, njll. Ukusebenza komoya okumelana nokushisa kwe-Fluoroelastomer nakho kuhle kakhulu, futhi izinga lokushisa lokusetshenziswa lingafika ku-200℃. Ngokukhetha i-bisphenol AF njengohlelo lwe-vulcanization, ukumelana nokushisa kokuguga kwerabha kuzoba ngcono. Isetshenziswa endaweni kawoyela wenjini enokhahlo, ukumelana nokushisa kokuguga kwe-ternary fluoroelastomer eyenziwe nge-vinylidene fluoride, tetrafluoroethylene ne-propylene kungcono kune-fluoroelastomer evamile. Lokhu kungenxa yokushintshwa kwe-hexafluoropropylene nge-propylene kunqubo ye-polymerization.

3, HNBR

Uma izinga le-hydrogenation liphakeme, kuba ngcono ukumelana nokushisa kwe-HNBR, ngoba cishe ayikho ibhondi ephindwe kabili engagcwalisiwe kuketango eliyinhloko elingazinzile. Amanye ama-HNBR asengavuthwa ngesibabule ngoba asenamabhondi aphindwe kabili angagcwele. Kodwa-ke, uma i-vulcanized nge-peroxide, ukumelana nokushisa kwenhlanganisela kuzothuthukiswa. Ngerabha ye-HNBR, i-TOTM inganikeza ukumelana nokushisa okungcono kune-DOP ngenxa yokuguquguquka okuphansi kanye nesisindo samangqamuzana aphezulu alawa mapulasitiki angama-trioctyl.

4. I-Neoprene

I-W-type neoprene inokumelana okungcono nokuguga kokushisa kunohlobo lwe-G-neoprene. I-Diphenylamine octanoate iyi-antioxidant engcono ye-neoprene, engathuthukisa ngempumelelo ukumelana nokushisa.

5, EPDM

I-EPDM isazokwazi ukumelana nokushisa okuhle ku-125 ℃ ngemva kokulingana okufanele. Ukusetshenziswa kwe-peroxide vulcanized EPDM, kungenza irabha ibe nokumelana nokushisa okungcono.

6, Indlela yesigaba somphunga we-viscosity ephansi ye-EPDM

Okuqukethwe kwe-ethylene ephezulu kanye ne-ultra-low viscosity vapor phase EPDM, ingagcwaliswa ngenani elikhulu lama-fillers, ngenxa yokuqukethwe okuphezulu kwe-ethylene, ukucubungula akudingi ukujoyina ukucubungula kokuguga komoya okumelana nokushisa okungathandeki kanye ne-resin, kusengenza irabha ibe nezakhiwo ezinhle zokucubungula, ukuze ukumelana nokushisa kwangempela kwerabha kuthuthukiswe.

7. Gwema ukusebenzisa i-styrene resin ephezulu

Gwema ukufaka i-styrene resin ephezulu kurabha esetshenziswa ekushiseni okuphezulu.

8, i-talcum powder

Kurabha yepayipi le-EPDM, buyisela u-40% we-carbon black nge-talcum powder, engathuthukisa ukumelana nokushisa ukuguga kwerabha. Amanye amamaki empushana ye-talcum anezinzuzo ezivelele kunobumba olulashiwe noma olungaphekiwe mayelana nalokhu.

9. I-plasticizer ephezulu ye-viscosity

Phakathi kwama-plasticizers, ama-plasticizers aphezulu angama-viscosity anganikeza ukumelana nokuguga kokushisa okungcono kune-plasticizers ephansi ye-viscosity. Ngenxa yokuthi i-plasticizer ye-viscosity ephezulu ivame ukuba nesisindo samangqamuzana aphezulu, akulula ukuguquguquka, ngaleyo ndlela ukuzinza okuhle nokumelana nokushisa okuhle.

10, Amafutha embewu yokudlwengula ye-neoprene

Ukuze wenze i-neoprene ibe nokusimama okungcono, uwoyela we-canola uyadingeka ngoba une-viscosity ephansi, okwenza irabha ibe ne-hysteresis ephansi kanye nokuguquguquka okuphansi, okungenza irabha ibe nokuphikiswa okuhle kokuguga.

I-11, Isistimu esebenzayo ye-EV/i-SEV engasebenzi kahle

Kuhlelo lwe-vulcanization olusebenzayo noma olungasebenzi kahle, isilinganiso se-accelerator nesibabule siphezulu, okungukuthi, 'ukukhushulwa okuphezulu nesibabule esiphansi', 'nesulphur emzimbeni' esikhundleni sesibabule esisodwa, kulolu hlelo lwe-vulcanization, ingxenye yebhondi yesibabule esisodwa kanye nesibopho sesulfure esiphindwe kabili ngenxa yokuthi le ngxube yenjoloba yanda kakhulu uhlelo, isilinganiso sesibopho esisodwa sesulfure kanye nesibopho sesulfure esiphindwe kabili siphakeme kunesibopho se-multi-sulfur, ngakho-ke, ukuzinza kokumelana nokushisa kwerabha kuyathuthukiswa futhi ukumelana nokushisa ukuguga kuyathuthukiswa.

12, i-zinc oxide

I-Vulcanization / sub-sulfuramide vulcanization system yerabha, egcwele i-zinc oxide eyengeziwe, inganikeza injoloba izici zokuguga ezingcono zokushisa kanye nokumelana kangcono ne-post-sulphur.

13, Irabha ye-EPDM eyenziwe nge-Peroxide

Kunhlanganisela ye-EPDM eyenziwe nge-peroxide, i-ZMTI ikhethwa njenge-antioxidant, enganikeza i-compound ephakeme modulus nokumelana nokushisa ukuguga.