Iyo sheath kana yekunze sheath ndiyo yekunze yekudzivirira musara mune yemaziso tambo chimiro, inonyanya kugadzirwa nePE sheath zvinhu uye PVC sheath zvinhu, uye halogen-isina murazvo-inodzoreredza sheath zvinhu uye yemagetsi yekutevera inopikisa sheath zvinhu zvinoshandiswa muzviitiko zvakakosha.
1. PE sheath zvinhu
PE ndiyo chidimbu che polyethylene, inova musanganiswa wepolymer wakaumbwa ne polymerization ye ethylene. Iyo yakasviba polyethylene sheath zvinhu inogadzirwa nekufanana kusanganisa uye granulating polyethylene resin ine stabilizer, kabhoni nhema, antioxidant uye plasticizer mune imwe chikamu. Polyethylene sheath zvinhu zve optical tambo sheaths inogona kukamurwa kuita yakaderera-density polyethylene (LDPE), mutsara yakaderera-density polyethylene (LLDPE), yepakati-density polyethylene (MDPE) uye yakakwirira-density polyethylene (HDPE) zvichienderana nekuwanda. Nekuda kwehukuru hwavo hwakasiyana uye mamorekuru zvimiro, vane hunhu hwakasiyana. Low-density polyethylene, inozivikanwawo seyakanyanya-kumanikidza polyethylene, inoumbwa necopolymerization ye ethylene pakakwirira (pamusoro pe1500 atmospheres) pa 200-300 ° C neokisijeni sechinhu chinokonzera. Nokudaro, ketani ye molecular ye-low-density polyethylene ine matavi akawanda ehurefu hwakasiyana, nehupamhi hwemaketani emaketani, maitiro asina kukwana, pasi crystallinity, uye kushanduka kwakanaka uye kureba. High-density polyethylene, inonziwo low-pressure polyethylene, inoumbwa ne polymerization ye ethylene pakadzika pasi (1-5 atmospheres) uye 60-80 ° C ine aluminium uye titanium catalysts. Nekuda kwekutetepa kwema molecular uremu kugovera kwepamusoro-density polyethylene uye kurongeka kurongeka kwemamorekuru, ine yakanaka michina zvimiro, yakanaka makemikari kuramba uye tembiricha yakawanda yekushandiswa. Medium-density polyethylene sheath material inogadzirwa nekusanganisa high-density polyethylene uye yakaderera-density polyethylene muchikamu chakakodzera, kana ne polymerizing ethylene monomer uye propylene (kana yechipiri monomer ye1-butene). Nokudaro, kushanda kwepakati-density polyethylene iri pakati peiyo yepamusoro-density polyethylene uye yakaderera-density polyethylene, uye ine zvose zviri zviviri kushanduka kwepasi-density polyethylene uye yakanakisa kupfeka kusagadzikana uye kusimba kwekusimba kwepamusoro-density polyethylene. Linear yakaderera-density polyethylene inopolymerized neyakaderera-kudzvanywa gasi chikamu kana mhinduro nzira ine ethylene monomer uye 2-olefin. Iyo branching degree yemutsara yakaderera-density polyethylene iri pakati pepasi density uye yakakwira density, saka ine yakanakisa kwezvakatipoteredza kusagadzikana kuputsa kuramba. Kwemamiriro ekunze kusagadzikana kuputsa kuramba chiratidzo chakanyanya kukosha chekuona kunaka kwePE zvinhu. Inoreva chiitiko chekuti chidimbu chebvunzo chakaiswa mukukotama kushushikana kutsemuka munzvimbo ye surfactant. Zvinhu zvinokanganisa kutsemuka kwechinhu zvinosanganisira: huremu hwemamorekuru, kugovera huremu hwemamorekuru, crystallinity, uye microstructure yemamorekuru cheni. Kukura kwehuremu hwemamorekuru, kupfupika kwehuremu hwema molecular, kuwedzera kwakabatana pakati pemawaferi, zviri nani kushushikana kwemamiriro ekunze kuputsa kuramba kwezvinhu, uye kurebesa hupenyu hwesevhisi; panguva imwecheteyo, iyo crystallization yezvinhu inobatawo chiratidzo ichi. Iyo yakaderera iyo crystallinity, zviri nani kushushikana kwezvakatipoteredza kuputsa kuramba kwezvinhu. Iko kusimba kwesimba uye kurebesa pakuputsika kwezvinhu zvePE chimwe chiratidzo chekuyera mashandiro echinyorwa, uye zvakare inogona kufanotaura kupera kwekushandiswa kwezvinhu. Iyo kabhoni yemukati mune PE zvinhu inogona kunyatso kurwisa kukukurwa kwemirairo yeultraviolet pane izvo zvinhu, uye antioxidants inogona kunyatso kuvandudza antioxidant zvimiro zvezvinhu.
2. PVC sheath zvinhu
PVC flame retardant material ine maatomu eklorini, ayo anopisa mumurazvo. Kana ichitsva, inoora uye inosunungura huwandu hwakawanda hwehutu uye hunotyisa HCL gasi, iyo inokonzera kukuvadza kwechipiri, asi inodzima pachayo painosiya murazvo, saka ine hunhu hwekusaparadzira murazvo; panguva imwecheteyo, PVC sheath material ine yakanaka flexibility uye extensibility, uye inoshandiswa zvakanyanya mumukati optical cables.
3. Halogen-isina murazvo unodzosera sheath zvinhu
Sezvo polyvinyl chloride ichizoburitsa magasi ane muchetura pakutsva, vanhu vakagadzira hutsi hushoma-shoma, husina halogen, husina chepfu, hwakachena murazvo unodzoreredza sheath zvinhu, kureva, kuwedzera inorganic flame retardants Al(OH)3 neMg(OH)2 kune zvakajairwa sheath zvinhu, izvo zvinoburitsa mvura yekristaro kana ikasangana nemoto uye inotora kupisa kwakawanda, nekudaro ichidzivirira tembiricha yesheath zvinhu kubva pakukwira uye kudzivirira kupisa. Sezvo inorganic flame retardants inowedzerwa kune halogen-isina murazvo retardant sheath zvinhu, conductivity yemapolymers ichawedzera. Panguva imwecheteyo, resin uye inorganic flame retardants akasiyana zvachose maviri-chikamu zvinhu. Panguva yekugadzira, zvinodikanwa kudzivirira kusanganiswa kusina kuenzana kwemoto retardants munharaunda. Inorganic flame retardants inofanirwa kuwedzerwa muhuwandu hwakakodzera. Kana chikamu chacho chakanyanya kukura, simba remagetsi uye elongation pakuputika kwezvinhu zvichaderedzwa zvikuru. Zviratidzo zvekuongorora mirazvo inodzoreredza zvimiro zvehalogen-isina murazvo retardants indekisi yeokisijeni uye kusungirirwa kwehutsi. Iyo okisijeni indekisi ndiyo shoma yeokisijeni inodiwa kuti zvinhu zvichengetedze zvakaringana kupisa mugasi rakasanganiswa reokisijeni nenitrogen. Iyo yakakura iyo okisijeni indekisi, zviri nani iyo murazvo unodzora zvimiro zvezvinhu. Hutsi hwehutsi hunoverengerwa nekuyera kufambiswa kwechiedza chakafanana chichipfuura nemuutsi hunogadzirwa nekupisa kwechinhu mune imwe nzvimbo uye yekuona nzira kureba. Kudzikira kwehutsi hwehutsi, kunobva kwadzikira kuburitsa utsi uye zvinoita kuti zvinhu zvifambe zvakanaka.
4. Electric mark resistant sheath material
Kune akawanda uye akawanda-midhiya anozvitsigira optical tambo (ADSS) akarara mushongwe imwe chete ine mitsetse yakakwira yemagetsi pamusoro mumagetsi ekutaurirana system. Kuti vakunde pesvedzero yeakakwira voltage induction munda wemagetsi pane tambo sheath, vanhu vakagadzira uye vakagadzira chitsva chemagetsi chinodzivirira sheath material, iyo sheath zvinhu nekunyatso kudzora zviri mukati kabhoni dema, saizi uye kugovera kwekabhoni nhema zvimedu. , kuwedzera akakosha ekuwedzera kugadzira iyo sheath zvinhu ine yakanakisa yemagetsi mavanga anodzivirira kuita.
Nguva yekutumira: Aug-26-2024