Ta hanyar ethylene, propylene da diolefin wanda ba a haɗa shi da copolymerization na ethylene propylene diene roba (EPDM) kamar yadda waya da kebul na rufi abu yana da fiye da shekaru 60 na tarihi. EPDM da polyvinyl chloride (PVC) da polyethylene mai haɗin gwiwa (XLPE) da sauran kayan rufewa suna da matsayi iri ɗaya da ba za a iya maye gurbinsu ba, kuma fa'idodinsa na musamman shine: tsawon rayuwar sabis, mafi kyawun juriya ga ruwa da oxygen da kwanciyar hankali na thermal, yanayin yanayin zafi mai faɗi. Kamar yadda aikace-aikacen EPDM a fagen rufin lantarki ya fi girma kuma yana da yawa, buƙatun alamomin maɓalli na EPDM suma suna da buƙatu, musamman a cikin wasu aikace-aikace masu tsayi, sarrafa maɓallan maɓalli na EPDM yana da ƙarin buƙatu masu tsauri, kawai lokacin da alamun maɓalli masu dacewa suna cikin kewayon ma'ana, don haka EPDM don saduwa da sarrafawa, aiki da amfani da buƙatun. Ɗauki EPDM a matsayin misali ga kera na matsakaici-ƙarfin lantarki waya da na USB rufi, idan tensile ƙarfi, tearing elongation, rushewar ƙarfi, dielectric asarar, girma resistivity da sauran muhimman inji da lantarki Properties na samfurin iya saduwa da bukatun, da albarkatun kasa EPDM ethylene abun ciki, mooney danko, diolefin abun ciki da kuma tsarki da sauran key Manuniya dole ne a yi m iyaka. Akwai abubuwa da yawa da ke shafar juriya ta karyewar waya ta EPDM da kebul na kebul. Baya ga abubuwan da aka ambata na ethylene da aka ambata a sama, abun ciki na diolefin da tsabta, abun ciki na gel a cikin EPDM, da daidaitawa da haɓaka tsarin sarrafawa suna da tasiri mai mahimmanci akan juriya na rushewar samfurin. Ba kawai guda ɗaya ba ne da keɓantattun abubuwan tasiri, amma kuma suna aiki tare don samun cikakkiyar tasiri akan juriya na lalacewar lantarki na samfuran. A cikin wannan takarda, an zaɓi wasu abubuwan da ke shafar juriya na EPDM don bincike da bincike na tsari, don samar da mahimman bayanai don haɗakar samfuran EPDM don wayar da kebul na USB.
1 Tasirin abun ciki na ENB akan ƙarfin rushewa
Abubuwan da ke cikin ENB (ƙasassun taro) <4.5%, kuma tare da haɓaka abun ciki na ENB, ƙarfin rushewar samfurin yana raguwa; Abubuwan da ke cikin ENB (ƙasassun taro) ≥4.5%, kuma tare da haɓaka abun ciki na ENB (ƙaramar juzu'i), ƙarfin rushewar samfurin yana ƙaruwa.
2. Tasirin tsarkin roba akan karfin rushewa
Lokacin da aka yi amfani da EPDM a cikin sarrafa kayan da aka rufe na lantarki, ana buƙatar tsabtar kayan zuwa wani matsayi. Tsabtace EPDM yawanci ana bayyana shi cikin abubuwan da ke cikin ash, wanda galibi ya ƙunshi gishirin inorganic wanda ke ɗauke da ions ƙarfe (vanadium, aluminum, iron, sodium, da dai sauransu) waɗanda aka gabatar a lokacin polymerization da post-processing, da ƙazanta na waje. Kasancewar ash, daidai da na zahiri 'lalacewar', cikin sauƙin zama nasara a cikin samfuran roba ta hanyar girgiza wutar lantarki. Yayin da abun cikin ash a cikin EPDM ya karu, abun cikin ion karfe a cikin samfurin kuma yana ƙaruwa, kuma ƙarfin rushewar samfurin da aka gama yana raguwa. Ash (ions karfe, ƙazanta na waje) yana da wani tasiri akan aikin lalacewar lantarki na samfurin. Yin la'akari da tasirin ions na ƙarfe akan juriya na rushewar samfurin, ions ƙarfe a cikin samfurin gwajin za su samar da fili a cikin samfurin a ƙarƙashin aikin filin lantarki na waje, wanda za'a sanya shi tare da filin waje don lalata samfurin. Yayin da abun ciki na ions na karfe a cikin samfurin ya karu, ƙarfin filin na ciki yana ƙaruwa a hankali, kuma yiwuwar haɗuwa da ƙananan ƙarfe na ƙarfe kuma yana ƙaruwa, yana haifar da ƙarfin filin gida mara kyau, kuma duk waɗannan abubuwan zasu rage juriya na samfurin. Abu na biyu, yi la'akari da tasirin da ƙazantar ƙazantar ƙazantar ƙazantar da samfuran ke yi, samfuran roba a cikin ƙazantar ƙasashen waje galibi sun haɗa da yashi da tsatsa, da sauransu, yawanci, waɗannan ƙazanta da samfuran roba ba su da kyau sosai, kuma kasancewarsu ga samfuran roba daidai yake da 'lalacewar', lalata daidaito da amincin samfuran roba. Lokacin da babban ƙarfin wutar lantarki na waje yayi aiki akan samfuran rufin lantarki na EPDM tare da 'lalacewar', zai zama da sauƙi a warware ta cikin samfuran rufin lantarki a 'rabin lahani', don haka rage juriyar samfurin ga lalacewar lantarki.
3. Tasirin abun ciki na gel akan ƙarfin rushewa
Gel wani tsari ne na musamman na 'barbashi na roba' da aka yi a lokacin polymerization na EPDM. Saboda yanayin halittarsa na musamman da tsarinsa, mu'amalarsa da sarkar kwayoyin halitta ta al'ada a cikin samfurin roba ba ta da ƙarfi, kuma ana iya ɗaukar kasancewarsa a matsayin 'ƙazanta' da ta rage a cikin samfurin roba. 'Domin samfurori masu inganci na EPDM na lantarki, abun ciki na gel na iya samun tasiri akan aikin lalacewar lantarki na samfurin. Yayin da abun ciki na gel a cikin EPDM ya karu, ƙarfin rushewar samfurin da aka gama yana raguwa. Tun da gel shine tsarin raga na crosslinked, ilimin halittarsa ya bambanta da na al'ada na EPDM kwayoyin sarƙoƙi, sabili da haka ba shi da jituwa tare da sarkar sarkar DM na yau da kullum fiye da kwayoyin EP. hulɗar da ke tsakanin layin gel da sarƙoƙin ƙwayoyin cuta na yau da kullun yana da rauni fiye da na tsakanin sarƙoƙin ƙwayoyin cuta na EPDM na yau da kullun.
Fuskar gel ɗin ba lallai ba ne 'cika' da sarƙoƙin ƙwayoyin cuta na EPDM, kuma za a iya samun wasu ''rabi'''. Tun da kasancewar gel ɗin zai shafi daidaituwar samfurin, samfuran da aka sarrafa za su samar da gradient filin kusa da gel a ƙarƙashin aikin filin lantarki mai ƙarfi na waje. Mafi girma da bambanci tsakanin ilimin halittar jiki da tsarin gel da kuma kewaye da sassan kwayoyin halitta na EPDM, mafi girma da samuwar gradient filin, da sauƙi shi ne ya karya farfajiyar gel wanda ke da raunin dangi kuma yana iya samun 'rata' a cikin samfurin. Yawancin bambance-bambancen da ke tsakanin sassan kwayoyin halitta na EPDM, mafi girma gradient filin, mafi kusantar halakar da gel surface inda da dangi ya fi rauni kuma za a iya samun ' rata ', forming ' lahani ' a cikin samfurin, haifar da farkon rushewar samfurin, kuma ta haka ne rage rushewar aikin samfurin.
4. Tasirin dabarar sarrafawa akan ƙarfin rushewa
Tsarin sarrafawa shine maɓalli mai mahimmanci a cikin sarrafa samfuran EPDM zuwa samfuran injunan lantarki, amma kuma ɗaya daga cikin mahimman abubuwan da ke shafar ɓarnawar samfuran kayan rufewar lantarki. Daidaitawa da haɓaka ainihin tsarin sarrafa kayan aiki da ƙari na abubuwan da ke hana wutan lantarki na iya haɓaka haɓaka aikin samfuran rufin lantarki sosai. Bayan da aka sarrafa kayan albarkatun EPDM guda ɗaya bisa ga nau'i daban-daban, kayan aikin injiniya ba su canza da yawa ba, kuma na ƙarshe ya kasance kusan 5% mafi girma fiye da na farko, amma ƙarfin rushewar lantarki yana da gagarumin canji, kuma na ƙarshe yana da kusan 60% mafi girma fiye da na farko. Babban dalilin inganta inji da lantarki Properties shi ne cewa marine na USB manufacturer ya inganta da sashi na diisopropyl benzene peroxide a lokacin da aiki na kayayyakin, sabõda haka, biyu shaidu a cikin gefen sarkar na ENB an cikakken crosslinked, da saura biyu shaidu an rage, da kuma kaolin da sauran lantarki insulating Additives an kara da cewa, ƙara da adsorbent kayayyakin, da conductive surface. Abubuwan da ke sama biyu sun isa don tabbatar da mahimmancin tsarin sarrafawa don haɓaka aikin lalacewar wutar lantarki na samfuran rufin lantarki na EPDM.
5.Kammalawa
(1) Haɗin kai biyu a cikin sashin gefe na monomer na uku (ENB) a cikin EPDM ya fi dacewa da haɗin kai.
(1) EPDM a cikin monomer na uku (ENB) a cikin sashin gefe na haɗin haɗin kai biyu, mafi cikakken haɗin haɗin kai, ƙananan adadin ragowar, mafi dacewa ga samfurori na lantarki (waya da kebul na USB) aikin juriya na lantarki.
(2) Mafi girman tsarkin albarkatun albarkatun EPDM (ƙananan abun cikin ash), yana da taimako don haɓaka samfuran sinadarai na lantarki (waya da rufin rufin kebul) juriya na rushewar lantarki.
(3) Ƙananan abun ciki na gel na EPDM albarkatun kasa, mafi yawan yana taimakawa wajen inganta kayan aikin lantarki (waya da kebul na USB) juriya na rushewar lantarki.
(3) Ƙananan abun ciki na gel na EPDM albarkatun kasa, mafi kyawun juriya na juriya na kayan aikin lantarki (waya da kebul na USB).
(4) Daidaita adadin EPDM a cikin tsarin tushe na insulators na lantarki (waya da rufin kebul) da haɓaka shi tare da abubuwan da ke hana wutan lantarki na iya haɓaka juriya na ɓarna na insulators na lantarki (waya da kebul na USB).
