(1)Zvinhu zvekudzivirira zveCross-Linked Low Smoke Zero Halogen Polyethylene (XLPE):
Zvinhu zvinodzivirira zveXLPE zvinogadzirwa nekuwedzera polyethylene (PE) uye ethylene vinyl acetate (EVA) se base matrix, pamwe chete nezvimwe zvinhu zvakasiyana-siyana zvakaita se halogen-free flame retardants, lubricants, antioxidants, nezvimwewo, kuburikidza ne compounding uye pelletizing process. Mushure mekugadzirwa kwemwaranzi, PE inoshanduka kubva pa linear molecular structure kuenda pa three-dimensional structure, ichichinja kubva pa thermoplastic material kuenda pa insoluble thermosetting plastic.
Tambo dzekudzivirira dzeXLPE dzine zvakanakira zvakawanda zvichienzaniswa nePE yethermoplastic yakajairika:
1. Kuramba kuri nani pakuchinja kwekupisa, kuvandudza hunhu hwemakanika pakupisa kwakanyanya, uye kuvandudza kuramba kuri nani pakuputika kwezvinonetsa zvakatipoteredza uye kukwegura kwekupisa.
2. Kugadzikana kwemakemikari uye kuramba kuchinjika kwe solvent, kuderera kwemvura inotonhora, uye kuchengetedza hunhu hwemagetsi. Kupisa kwenguva refu kunogona kusvika 125°C kusvika 150°C. Mushure mekugadzirisa cross-linking, tembiricha ye PE inogona kuwedzerwa kusvika 250°C, zvichibvumira kugona kwekutakura magetsi kwakanyanya kune tambo dzine ukobvu hwakafanana.
3. Tambo dzakadzivirirwa neXLPE dzinoratidzawo hunhu hwakanaka hwemakanika, husingapindi mvura, uye hunodzivirira mwaranzi, zvichiita kuti dzikwanise kushandiswa zvakasiyana-siyana, zvakaita sekubatanidza waya dzemukati mumidziyo yemagetsi, marobhoti emota, marobhoti emwenje, waya dzemotokari dzinodzora masaini ane simba shoma, waya dzemotokari, tambo dzepasi pevhu, tambo dzemigodhi dzisingakuvadzi nharaunda, tambo dzengarava, tambo dze1E-grade dzezviteshi zvemagetsi zvenyukireya, tambo dzepombi dzinonyudzwa mumvura, uye tambo dzemagetsi dzinotumira simba.
Mafambiro aripo pari zvino mukugadzirwa kwezvinhu zvinodzivirira kupisa zveXLPE anosanganisira zvinhu zvinodzivirira kupisa zvePE, zvinodzivirira kupisa zvePE, uye zvinodzivirira kupisa zvepolyolefin.
(2)Zvinhu zvekudzivirira zvePolypropylene (XL-PP):
Polypropylene (PP), sepurasitiki yakajairika, ine hunhu hwakadai sekurema kwakareruka, zvinhu zvakawanda zvakabikwa, kushanda zvakanaka kwemutengo, kuramba ngura kwemakemikari, nyore kuumba, uye kugona kudzokorodza. Zvisinei, ine zvipingamupinyi zvakaita sesimba shoma, kuramba kupisa kwakaderera, kushanduka kwakakosha kwekupwanyika, kuramba kutsvedza kwakaderera, kupwanyika kwakaderera, uye kuramba kupisa nekukwegura kweokisijeni. Zvipingamupinyi izvi zvakaderedza kushandiswa kwayo mumashandisirwo etambo. Vaongorori vanga vachishanda kugadzirisa zvinhu zvepolypropylene kuti vavandudze mashandiro azvo, uye irradiation cross-linked modified polypropylene (XL-PP) yakakunda zvipingamupinyi izvi zvinobudirira.
Waya dzakadzivirirwa neXL-PP dzinogona kusangana nemiyedzo yemurazvo yeUL VW-1 uye mwero wewaya we150°C wakayerwa neUL. Mukushandiswa kwewaya dzinoshanda, EVA inowanzo sanganiswa nePE, PVC, PP, nezvimwe zvinhu kuti igadzirise mashandiro ewaya yekudzora waya.
Chimwe chezvakaipa zvekushandiswa kwemurazvo wePP wakabatana nemagetsi ndechekuti zvinosanganisira kukwikwidzana pakati pekuumbwa kwemapoka ekupedzisira asina kuguta kuburikidza nekuita kwekuora uye kuita kwekubatanidza pakati pemamorekuru anokurudzirwa uye mamorekuru makuru akasununguka. Zvidzidzo zvakaratidza kuti chiyero chekuora kwemurazvo kune kuita kwekubatanidza muPP irradiation cross-linking chingangoita 0.8 kana uchishandisa gamma-ray irradiation. Kuti uwane kuita kwekuita kwekubatanidza muPP, zvinokurudzira kubatanidza zvinofanirwa kuwedzerwa kuti zvibatanidzwe nemurazvo. Pamusoro pezvo, ukobvu hwekubatanidza hunoshanda hunogumira nekugona kupinda kwemaerekitironi panguva yekurasira. Kurasira kunotungamira mukugadzirwa kwegasi nefuro, izvo zvinobatsira pakubatanidza zvigadzirwa zvitete asi zvinoderedza kushandiswa kwetambo dzakakora.
(3) Zvinhu zvekudzivirira zveCross-Linked Ethylene-Vinyl Acetate Copolymer (XL-EVA):
Sezvo kudiwa kwekuchengetedzwa kwetambo kuri kuwedzera, kugadzirwa kwetambo dzine halogen-free flame-retardant cross-linked cables kwawedzera nekukurumidza. Zvichienzaniswa nePE, EVA, iyo inoisa vinyl acetate monomers mu molecular chain, ine crystallinity yakaderera, zvichikonzera kushanduka kuri nani, kuramba kukanganiswa, kukwirirana kwefiller, uye hunhu hwekuvhara kupisa. Kazhinji, hunhu hweEVA resin hunoenderana nehuwandu hwevinyl acetate monomers mu molecular chain. Kuwedzera kwevinyl acetate kunotungamira mukuwedzera kujeka, kushanduka, uye kuoma. EVA resin ine filler compatibility yakanaka uye cross-linkability, zvichiita kuti ive yakakurumbira mu halogen-free flame-retardant cross-linked cables.
Resin yeEVA ine vinyl acetate inenge 12% kusvika 24% inowanzoshandiswa mukudzivirira waya netambo. Mukushandiswa kwetambo chaiyo, EVA inowanzo sanganiswa nePE, PVC, PP, nezvimwe zvinhu kuti igadzirise mashandiro ekudzivirira tambo. Zvikamu zveEVA zvinogona kukurudzira kubatanidza tambo, zvichivandudza mashandiro etambo mushure mekubatanidza tambo.
(4) Zvinhu zvekudzivirira zveCross-Linked Ethylene-Propylene-Diene Monomer (XL-EPDM):
XL-EPDM i terpolymer inoumbwa ne ethylene, propylene, uye non-conjugated diene monomers, dzakabatana kuburikidza nemwaranzi. Matambo eXL-EPDM anosanganisa zvakanakira tambo dzakaputirwa ne polyolefin uye tambo dzakaputirwa nerabha:
1. Kuchinjika, kusimba, kusanamatira pakupisa kwakanyanya, kuramba kukwegura kwenguva refu, uye kuramba mamiriro ekunze akaoma (-60°C kusvika 125°C).
2. Kuramba ozone, kuramba UV, kushanda kwemagetsi kudzivirira ngura, uye kuramba ngura yemakemikari.
3. Kusagona kuoiri nezvinhu zvinonyungudutsa zvakafanana nekushandisa chloroprene rabha inoputira zvinhu. Inogona kugadzirwa uchishandisa michina ye common hot extrusion processing, zvichiita kuti ive nemutengo wakaderera.
Tambo dzeXL-EPDM-insulated dzine mashandisirwo akasiyana-siyana, kusanganisira asi kwete kungogumira patambo dzemagetsi dzine voltage shoma, tambo dzengarava, tambo dzemoto dzinobatidza, tambo dzekudzora dzemacompressor efriji, tambo dzemugodhi dzinofamba, michina yekuboorera, uye zvishandiso zvekurapa.
Dambudziko guru retambo dzeXL-EPDM dzinosanganisira kusasimba kwekubvisa misodzi uye kunamira kusina simba uye kuzvinamira, izvo zvinogona kukanganisa kugadziriswa kunotevera.
(5) Chinhu Chekudzivirira Rubha reSilicone
Rabha reSilicone rine kuchinjika uye rinodzivirira zvakanyanya ozone, corona discharge, uye marimi emoto, zvichiita kuti rive chinhu chakanakira kuputira magetsi. Kushandiswa kwaro kukuru muindasitiri yemagetsi ndeye waya netambo. Waya netambo dzerabha reSilicone dzakanyatsokodzera kushandiswa munzvimbo dzinopisa zvakanyanya uye dzinoda nguva yakawanda, dzine hupenyu hwakareba zvakanyanya kana tichienzanisa netambo dzakajairwa. Mashandisirwo akajairika anosanganisira mota dzinopisa zvakanyanya, matransformer, majenareta, zvishandiso zvemagetsi nemagetsi, tambo dzekupisa mumotokari dzekutakura, uye tambo dzemagetsi nedzekudzora dzemugungwa.
Parizvino, tambo dze silicone rabha dzakaputirwa nesimbi dzinowanzo batanidzwa uchishandisa mhepo inopisa kana steam ine simba guru. Kunewo tsvakurudzo iri kuenderera mberi pakushandisa electron beam irradiation ye silicone rabha inobatanidza simbi, kunyange zvazvo isati yanyanya kushandiswa muindasitiri yetambo. Nekufambira mberi kuri kuitwa mukugadzirwa kwetekinoroji ye irradiation cross-linking, inopa imwe nzira inodhura zvishoma, inoshanda zvakanyanya, uye isingakuvadzi nharaunda ye silicone rabha insulation. Kuburikidza ne electron beam irradiation kana mamwe manyuko emwaranzi, silicone rabha insulation inoshanda zvakanaka inogona kuwanikwa uku ichibvumira kudzora kudzika uye mwero we cross-linking kuti isangane nezvinodiwa zvekushandisa.
Saka, kushandiswa kwetekinoroji yekubatanidza zvinhu zvinodzivirira rabha resilicone kunoratidza vimbiso huru muindasitiri yewaya netambo. Tekinoroji iyi inotarisirwa kuderedza mari yekugadzira, kuvandudza mashandiro ekugadzira, uye kubatsira mukuderedza migumisiro yakaipa yezvakatipoteredza. Kutsvaga nekuvandudza mune ramangwana kunogona kuwedzera kushandiswa kwetekinoroji yekubatanidza zvinhu zvinodzivirira rabha resilicone, zvichiita kuti zvinyanye kushandiswa mukugadzira waya netambo dzinopisa zvakanyanya muindasitiri yemagetsi. Izvi zvichapa mhinduro dzakavimbika uye dzinogara kwenguva refu munzvimbo dzakasiyana siyana dzekushandisa.
Nguva yekutumira: Gunyana-28-2023