Sheath ko kwasfa na waje shine mafi ƙarancin kariya a cikin tsarin kebul na gani, galibi an yi shi da kayan kwalliyar PE da kayan kwasfa na PVC, kuma ana amfani da kayan sheath mara ƙarancin harshen wuta da kayan sawun lantarki a cikin lokuta na musamman.
1. PE sheath abu
PE shine raguwar polyethylene, wanda shine fili na polymer wanda aka kafa ta hanyar polymerization na ethylene. Baƙar fata polyethylene kayan an yi shi ta hanyar haɗawa iri ɗaya tare da resin polyethylene tare da stabilizer, baƙar fata carbon, antioxidant da filastik a cikin wani yanki. Polyethylene sheath kayan don na gani na USB sheaths za a iya raba zuwa low-yawa polyethylene (LDPE), mikakke low-yawa polyethylene (LLDPE), matsakaici-yawa polyethylene (MDPE) da high-yawa polyethylene (HDPE) bisa ga yawa. Saboda nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i)). Ƙananan ƙananan polyethylene, wanda kuma aka sani da polyethylene mai girma, yana samuwa ta hanyar copolymerization na ethylene a babban matsa lamba (sama da 1500 yanayi) a 200-300 ° C tare da oxygen a matsayin mai kara kuzari. Sabili da haka, ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar cuta ta ƙunshi nau'i mai yawa na rassan rassan rassan rassan rassan rassan rassan, tsarin da ba daidai ba, ƙananan crystallinity, da kuma sassauci mai kyau da haɓakawa. Polyethylene mai girma, wanda kuma aka sani da ƙananan polyethylene, an samo shi ta hanyar polymerization na ethylene a ƙananan matsa lamba (1-5 yanayi) da 60-80 ° C tare da aluminum da titanium catalysts. Saboda kunkuntar nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'i)) da kuma tsarin tsari na kwayoyin halitta, yana da kyawawan kaddarorin inji, mai kyau juriya na sinadarai da kuma yawan zafin jiki na amfani. Matsakaici-yawan kayan sheath na polyethylene ana yin su ta hanyar haɗaɗɗen polyethylene mai girma da ƙananan polyethylene mai ƙarancin yawa a cikin daidaitaccen rabo, ko ta hanyar polymerizing ethylene monomer da propylene (ko monomer na biyu na 1-butene). Sabili da haka, aikin polyethylene mai tsaka-tsaki yana tsakanin na polyethylene mai girma da ƙananan polyethylene, kuma yana da nau'i-nau'i na ƙananan ƙananan polyethylene da kuma kyakkyawan juriya na juriya da ƙarfin ƙarfi na polyethylene mai girma. Polyethylene mai ƙarancin ƙima na layi yana polymerized ta hanyar ƙarancin iskar gas ko hanyar mafita tare da ethylene monomer da 2-olefin. Matsayin reshe na polyethylene mai ƙarancin ƙima yana tsakanin ƙananan yawa da yawa, don haka yana da kyakkyawan juriya na damuwa na muhalli. Juriya na fatattaka danniya na muhalli alama ce mai mahimmanci don gano ingancin kayan PE. Yana nufin al'amarin da cewa kayan gwajin yanki ya fuskanci lankwasa damuwa a cikin yanayin surfactant. Abubuwan da ke shafar fatattakar damuwa na kayan sun haɗa da: nauyin kwayoyin halitta, rarraba nauyin kwayoyin halitta, crystallinity, da microstructure na sarkar kwayoyin halitta. Mafi girman nauyin kwayoyin halitta, kunkuntar rarraba nauyin kwayoyin halitta, mafi yawan haɗin kai tsakanin wafers, mafi kyawun juriya na damuwa na muhalli na kayan aiki, da kuma tsawon rayuwar sabis na kayan; a lokaci guda, crystallization na kayan kuma yana rinjayar wannan alamar. Ƙananan crystallinity, mafi kyawun yanayin damuwa na fatattaka juriya na abu. Ƙarfin ƙarfi da haɓakawa a lokacin karya kayan PE wata alama ce don auna aikin kayan, kuma yana iya hango ƙarshen ƙarshen amfani da kayan. Abubuwan da ke cikin carbon a cikin kayan PE na iya tsayayya da yashewar hasken ultraviolet akan kayan, kuma antioxidants na iya inganta ingantaccen kaddarorin antioxidant na kayan.
2. PVC sheath abu
Abubuwan da ke hana wuta na PVC sun ƙunshi atom ɗin chlorine, waɗanda za su ƙone a cikin harshen wuta. Lokacin konewa, zai rushe kuma ya saki babban adadin iskar HCL mai lalata da guba, wanda zai haifar da lahani na biyu, amma zai kashe kansa lokacin barin harshen wuta, don haka yana da halayyar rashin yada harshen wuta; a lokaci guda, kayan kwalliyar PVC yana da sassauci mai kyau da haɓakawa, kuma ana amfani dashi sosai a cikin kebul na gani na cikin gida.
3. Abun da ba shi da harshen wuta mara halogen
Tun da polyvinyl chloride zai haifar da iskar gas mai guba lokacin konewa, mutane sun sami ƙananan hayaki, marasa halogen, mara guba, kayan ƙwanƙwasa mai tsaftar harshen wuta, wato, ƙara ƙarancin wutan wuta Al (OH) 3 da Mg (OH) 2 zuwa kayan kwasfa na yau da kullun, wanda zai saki ruwa mai kristal lokacin fuskantar wuta kuma ya sha zafi mai yawa, ta yadda zai hana yanayin zafi na kayan kwasfa daga tashi da hana konewa. Tunda ana ƙara masu kashe wuta na inorganic zuwa kayan sheath marasa harshen wuta marasa halogen, halayen polymers zai ƙaru. A lokaci guda, resins da inorganic harshen wuta retardants ne gaba daya daban-daban mataki biyu kayan. A lokacin sarrafawa, ya zama dole don hana haɗuwar rashin daidaituwa na masu hana wuta a gida. Yakamata a kara masu kashe wutar da ba a iya gani ba cikin adadin da suka dace. Idan rabo ya yi girma sosai, ƙarfin injiniya da haɓakawa a karya na kayan za a ragu sosai. Alamomi don kimanta kaddarorin masu kare harshen wuta na masu kare harshen wuta marasa halogen sune ma'aunin iskar oxygen da tattara hayaki. Ma'anar iskar oxygen ita ce mafi ƙarancin iskar oxygen da ake buƙata don kayan don kiyaye daidaitaccen konewa a cikin gauraya gas na iskar oxygen da nitrogen. Mafi girman ma'aunin iskar oxygen, mafi kyawun abubuwan da ke hana wutan abu. Ana ƙididdige ƙaddamarwar hayaki ta hanyar auna watsawa na daidaitattun hasken haske da ke wucewa ta cikin hayakin da aka haifar ta hanyar konewa na kayan a cikin wani wuri da tsawon hanya na gani. Ƙananan ƙaddamarwar hayaki, ƙananan hayaƙin hayaki da mafi kyawun aikin kayan aiki.
4. Electric alamar resistant abu sheath abu
Ana samun ƙarin hanyoyin sadarwa na kai-da-kai (ADSS) da ke kwance a cikin hasumiya ɗaya tare da manyan layukan da ke kan wutar lantarki a tsarin sadarwar wutar lantarki. Don shawo kan tasirin babban ƙarfin lantarki shigar da wutar lantarki akan kullin kebul, mutane sun haɓaka kuma sun samar da sabon kayan da ke jure tabo ta lantarki, kayan sheath ta hanyar sarrafa abubuwan da ke cikin baƙar fata na carbon, girman da rarraba ƙwayoyin baƙar fata na carbon. , Ƙara abubuwan ƙari na musamman don yin kayan sheath yana da kyakkyawan aikin juriya na tabo na lantarki.
Lokacin aikawa: Agusta-26-2024