(1)Mea Hoʻokaʻawale ʻAʻohe Uwahi Haʻahaʻa Halogen Polyethylene (XLPE) i hoʻopili ʻia:
Hana ʻia ka mea hoʻokaʻawale XLPE ma ka hoʻohui ʻana i ka polyethylene (PE) a me ka ethylene vinyl acetate (EVA) ma ke ʻano he matrix kumu, me nā mea hoʻohui like ʻole e like me nā mea pale ahi halogen-free, lubricants, antioxidants, a me nā mea ʻē aʻe, ma o ke kaʻina hana hoʻohuihui a me ka pelletizing. Ma hope o ke kaʻina hana irradiation, hoʻololi ʻo PE mai kahi ʻano molekala linear i kahi ʻano ʻekolu-dimensional, e hoʻololi ana mai kahi mea thermoplastic i kahi plastic thermosetting insoluble.
He nui nā pono o nā kaula hoʻokaʻawale XLPE i hoʻohālikelike ʻia me ka PE thermoplastic maʻamau:
1. Hoʻomaikaʻi i ke kūpaʻa ʻana i ka deformation thermal, hoʻonui i nā waiwai mechanical i nā mahana kiʻekiʻe, a hoʻomaikaʻi i ke kūpaʻa ʻana i ka haki ʻana o ke kaiapuni a me ka ʻelemakule thermal.
2. Hoʻonui i ke kūpaʻa kemika a me ke kūpaʻa o ka solvent, hoʻemi ʻia ke kahe anu, a mālama ʻia nā waiwai uila. Hiki i nā mahana hana lōʻihi ke piʻi i 125°C a i 150°C. Ma hope o ke kaʻina hana cross-linking, hiki ke hoʻonui ʻia ka mahana pōkole o PE i 250°C, e ʻae ana i kahi mana lawe au kiʻekiʻe loa no nā kaula o ka mānoanoa like.
3. Hōʻike pū nā kaula XLPE-insulated i nā waiwai mechanical, waterproof, a me nā waiwai kū i ka radiation, e kūpono ai lākou no nā noi like ʻole, e like me nā uwea kūloko i loko o nā mīkini uila, nā alakaʻi motika, nā alakaʻi kukui, nā uwea hoʻokele hōʻailona haʻahaʻa kaʻa, nā uwea locomotive, nā uwea subway, nā uwea mining aloha kaiapuni, nā uwea moku, nā uwea 1E-grade no nā mea kanu mana nukelea, nā uwea pamu submersible, a me nā uwea hoʻoili mana.
ʻO nā kuhikuhi o kēia manawa i ka hoʻomohala ʻana i nā mea hoʻokaʻawale XLPE e pili ana i nā mea hoʻokaʻawale uwea mana PE irradiation cross-linked, nā mea hoʻokaʻawale aerial PE irradiation cross-linked, a me nā mea uhi polyolefin flame-retardant irradiation cross-linked.
(2)Mea Hoʻokaʻawale Polypropylene i Hoʻopili ʻia (XL-PP):
ʻO Polypropylene (PP), ma ke ʻano he plastic maʻamau, he mau ʻano like me ke kaumaha māmā, nā kumu waiwai maka he nui, ka pono o ke kumukūʻai, ke kūpaʻa maikaʻi loa i ka palaho kemika, ka maʻalahi o ka hoʻoheheʻe ʻana, a me ka hiki ke hana hou ʻia. Eia nō naʻe, he mau palena kona e like me ka ikaika haʻahaʻa, ke kūpaʻa wela maikaʻi ʻole, ka hoʻololi nui ʻana o ka shrinkage, ke kūpaʻa kolo maikaʻi ʻole, ka brittleness haʻahaʻa o ka mahana, a me ke kūpaʻa maikaʻi ʻole i ka wela a me ka ʻelemakule oxygen. Ua kaupalena kēia mau palena i kona hoʻohana ʻana i nā noi kaula. Ke hana nei nā mea noiʻi e hoʻololi i nā mea polypropylene e hoʻomaikaʻi i kā lākou hana holoʻokoʻa, a ua lanakila maikaʻi ka irradiation cross-linked modified polypropylene (XL-PP) i kēia mau palena.
Hiki i nā uea hoʻokaʻawale ʻia ʻo XL-PP ke hoʻokō i nā hoʻāʻo lapalapa UL VW-1 a me nā kūlana uea UL-rated 150°C. I nā hoʻohana uwea maoli, hoʻohui pinepine ʻia ʻo EVA me PE, PVC, PP, a me nā mea ʻē aʻe e hoʻoponopono i ka hana o ka papa hoʻokaʻawale uwea.
ʻO kekahi o nā hemahema o ka irradiation cross-linked PP ʻo ia ka hoʻopili ʻana i kahi hopena hoʻokūkū ma waena o ka hoʻokumu ʻana o nā hui hopena unsaturated ma o nā hopena degradation a me nā hopena cross-linking ma waena o nā molekala i hoʻoulu ʻia a me nā molekala nui free radical. Ua hōʻike ʻia nā haʻawina ʻo ka ratio o ka degradation i nā hopena cross-linking ma ka irradiation cross-linking PP ma kahi o 0.8 i ka wā e hoʻohana ai i ka irradiation gamma-ray. No ka hoʻokō ʻana i nā hopena cross-linking maikaʻi ma PP, pono e hoʻohui ʻia nā mea hoʻolaha cross-linking no ka irradiation cross-linking. Eia kekahi, ua kaupalena ʻia ka mānoanoa cross-linking maikaʻi e ka hiki ke komo o nā kukuna electron i ka wā o ka irradiation. Alakaʻi ka irradiation i ka hana ʻana o ke kinoea a me ka hua, he mea maikaʻi ia no ka cross-linking o nā huahana lahilahi akā kaupalena i ka hoʻohana ʻana i nā kaula paia mānoanoa.
(3) Mea Hoʻokaʻawale ʻEthylene-Vinyl Acetate Copolymer i Hoʻopili ʻia (XL-EVA):
I ka piʻi ʻana o ke koi no ka palekana o ke kaula, ua ulu wikiwiki ka hoʻomohala ʻana o nā kaula halogen-free flame-retardant cross-linked. Ke hoʻohālikelike ʻia me PE, ʻo EVA, ka mea e hoʻokomo i nā monomers vinyl acetate i loko o ke kaulahao molekala, he haʻahaʻa ka crystallinity, e hopena ana i ka hoʻomaikaʻi ʻana i ka maʻalahi, ke kū'ē i ka hopena, ka hoʻohālikelike ʻana o ka mea hoʻopihapiha, a me nā waiwai sila wela. Ma keʻano laulā, pili nā waiwai o ka resin EVA i ka ʻike o nā monomers vinyl acetate i loko o ke kaulahao molekala. ʻO ka ʻike vinyl acetate kiʻekiʻe e alakaʻi i ka hoʻonui ʻana i ka transparency, ka maʻalahi, a me ka paʻakikī. Loaʻa i ka resin EVA ka hoʻohālikelike ʻana o ka mea hoʻopihapiha a me ka cross-linkability maikaʻi loa, e hoʻonui ana i kona kaulana i nā kaula halogen-free flame-retardant cross-linked.
ʻO ka resin EVA me ka nui o ka vinyl acetate ma kahi o 12% a 24% ka mea maʻamau i hoʻohana ʻia i ka insulation uea a me ke kaula. I nā noi kaula maoli, hoʻohui pinepine ʻia ʻo EVA me PE, PVC, PP, a me nā mea ʻē aʻe e hoʻoponopono i ka hana o ka papa insulation uea. Hiki i nā ʻāpana EVA ke paipai i ka cross-linking, e hoʻomaikaʻi ana i ka hana uea ma hope o ke cross-linking.
(4) Mea Hoʻokaʻawale ʻEthylene-Propylene-Diene Monomer i Hoʻopili ʻia (XL-EPDM):
ʻO XL-EPDM kahi terpolymer i haku ʻia me ka ethylene, propylene, a me nā monomers diene i hoʻohui ʻole ʻia, i hoʻopili ʻia ma o ka irradiation. Hoʻohui nā kaula XL-EPDM i nā pono o nā kaula polyolefin-insulated a me nā kaula rubber-insulated maʻamau:
1. Ka maʻalahi, ke kūpaʻa, ka ʻaʻole e pipili i nā mahana kiʻekiʻe, ke kūpaʻa lōʻihi i ka ʻelemakule, a me ke kūpaʻa i nā aniau ʻino (-60°C a i 125°C).
2. Ke kūpaʻa ʻana o ka ʻozone, ke kūpaʻa ʻana o ka UV, ka hana insulation uila, a me ke kūpaʻa ʻana i ka pala kemika.
3. Ke kū'ē i ka ʻaila a me nā mea hoʻoheheʻe e like me ka insulation rubber chloroprene maʻamau. Hiki ke hana ʻia me ka hoʻohana ʻana i nā lako hana extrusion wela maʻamau, e lilo ia i mea kūpono ke kumukūʻai.
He nui nā ʻano hana o nā uwea i hoʻopaʻa ʻia me XL-EPDM, me ka palena ʻole i nā uwea mana haʻahaʻa voltage, nā uwea moku, nā uwea hoʻā ʻana o nā kaʻa, nā uwea hoʻokele no nā mea hoʻopili hau, nā uwea kelepona mining, nā lako wili, a me nā mea lapaʻau.
ʻO nā hemahema nui o nā kaula XL-EPDM e komo pū ana me ke kūpaʻa haʻalulu maikaʻi ʻole a me nā waiwai hoʻopili palupalu a me nā waiwai hoʻopili ponoʻī, hiki ke hoʻopilikia i ka hana ma hope.
(5) Mea Hoʻokaʻawale Lahopa Silicone
Loaʻa i ka ʻūpā silicone ka maʻalahi a me ke kūpaʻa maikaʻi loa i ka ozone, ka hoʻokuʻu ʻana o ka corona, a me nā lapalapa, e lilo ia i mea kūpono no ka insulation uila. ʻO kāna hoʻohana nui ʻana i ka ʻoihana uila no nā uea a me nā kaula. He kūpono loa nā uea a me nā kaula silicone no ka hoʻohana ʻana i nā wahi wela kiʻekiʻe a me nā wahi koi, me ka lōʻihi o ke ola e hoʻohālikelike ʻia me nā kaula maʻamau. ʻO nā hoʻohana maʻamau e pili ana i nā motika wela kiʻekiʻe, nā mea hoʻololi, nā mea hana uila, nā lako uila a me nā uila, nā kaula hoʻā i nā kaʻa halihali, a me nā kaula mana a me nā kaula kaohi moana.
I kēia manawa, ʻo nā kaula i hoʻopaʻa ʻia me ka silicone rubber e hoʻopili pinepine ʻia me ka hoʻohana ʻana i ke kaomi lewa me ka ea wela a i ʻole ka mahu kiʻekiʻe. Aia kekahi noiʻi e hoʻomau nei i ka hoʻohana ʻana i ka irradiation electron beam no ka cross-linking silicone rubber, ʻoiai ʻaʻole i lilo i mea nui i ka ʻoihana kaula. Me nā holomua hou i ka ʻenehana cross-linking irradiation, hāʻawi ia i kahi koho haʻahaʻa haʻahaʻa, ʻoi aku ka maikaʻi, a me ke kaiapuni no nā mea insulation silicone rubber. Ma o ka irradiation electron beam a i ʻole nā kumu radiation ʻē aʻe, hiki ke hoʻokō ʻia ka cross-linking kūpono o ka insulation silicone rubber me ka ʻae ʻana i ka kaohi ma luna o ka hohonu a me ke kiʻekiʻe o ka cross-linking e hoʻokō i nā koi noi kikoʻī.
No laila, ʻo ka hoʻohana ʻana i ka ʻenehana hoʻopili ʻana irradiation no nā mea hoʻopaʻa ʻana o ka silicone rubber he mea nui ia i ka ʻoihana uea a me ke kaula. Manaʻo ʻia kēia ʻenehana e hōʻemi i nā kumukūʻai hana, hoʻomaikaʻi i ka pono hana, a kōkua i ka hōʻemi ʻana i nā hopena maikaʻi ʻole o ke kaiapuni. Hiki i nā hana noiʻi a me ka hoʻomohala ʻana i ka wā e hiki mai ana ke hoʻoikaika hou aku i ka hoʻohana ʻana i ka ʻenehana hoʻopili ʻana irradiation no nā mea hoʻopaʻa ʻana o ka silicone rubber, e hoʻolilo iā lākou i mea kūpono loa no ka hana ʻana i nā uea a me nā kaula wela kiʻekiʻe a me ka hana kiʻekiʻe i ka ʻoihana uila. E hāʻawi kēia i nā hopena hilinaʻi a paʻa hoʻi no nā wahi noi like ʻole.
Ka manawa hoʻouna: Sep-28-2023