Ke ʻimi nei i nā kaula a me nā uea maikaʻi loa, ʻo ke koho ʻana i nā mea sheathing kūpono he mea koʻikoʻi. He ʻano hana like ʻole ka puʻu o waho e hōʻoia i ka lōʻihi, palekana a me ka hana o ke kaula a i ʻole ka uea. He mea maʻamau ka hoʻoholo ʻana ma waena o ka polyurethane (PUR) a mepolyvinyl chloride (PVC). Ma kēia ʻatikala, e aʻo ʻoe e pili ana i nā ʻokoʻa hana ma waena o nā mea ʻelua a me nā noi i kūpono i kēlā me kēia mea.
ʻO ka hoʻolālā a me ka hana ma nā kaula a me nā uea
ʻO kahi pū (i kapa ʻia hoʻi ʻo waho a i ʻole sheath) ʻo ia ka papa waho loa o kahi kaula a i ʻole uea a hoʻohana ʻia me ka hoʻohana ʻana i kekahi o nā ʻano extrusion. Mālama ka puʻu i nā mea hoʻokele uwea a me nā mea hana ʻē aʻe mai nā kumu o waho e like me ka wela, ke anu, ka pulu a i ʻole kemika a me nā hopena mechanical. Hiki iā ia ke hoʻoponopono i ke ʻano a me ke ʻano o ka mea alakaʻi i hoʻopaʻa ʻia, a me ka papa pale (inā loaʻa), a laila e hōʻemi i ka hoʻopili ʻana i ke kelepona electromagnetic compatibility (EMC). He mea nui kēia e hōʻoia i ka hoʻoili mau ʻana o ka mana, hōʻailona, a i ʻole ʻikepili i loko o ke kaula a i ʻole ka uea. He kuleana koʻikoʻi ka sheathing i ka lōʻihi o nā kaula a me nā uea.
He mea koʻikoʻi ke koho ʻana i nā mea sheathing kūpono i ka hoʻoholo ʻana i ke kaula maikaʻi loa no kēlā me kēia noi. No laila, he mea nui e ʻike pono i ke kumu e pono ai ke kelepona a i ʻole ka uea a me nā koi e pono ai.
ʻO ka mea maʻamau maʻamau
ʻO ka Polyurethane (PUR) a me ka polyvinyl chloride (PVC) nā mea ʻelua i hoʻohana pinepine ʻia no nā uwea a me nā uea. I ka nānā ʻana, ʻaʻohe ʻokoʻa ma waena o kēia mau mea, akā hōʻike lākou i nā waiwai like ʻole e kūpono ai i nā noi like ʻole. Eia kekahi, hiki ke hoʻohana ʻia kekahi mau mea ʻē aʻe e like me nā mea sheathing, e komo pū ana i ka pāpaʻi kalepa, thermoplastic elastomers (TPE), a me nā pūhui plastik kūikawā. Eia naʻe, no ka mea ʻoi aku ka liʻiliʻi o lākou ma mua o PUR a me PVC, e hoʻohālikelike mākou i kēia mau mea ʻelua i ka wā e hiki mai ana.
PUR - ʻO ka hiʻohiʻona nui loa
ʻO ka Polyurethane (a i ʻole PUR) e pili ana i kahi hui o nā plastics i kūkulu ʻia i ka hopena o nā makahiki 1930. Hana ʻia ia e kahi kaʻina hana kemika i kapa ʻia ka polymerization hoʻohui. ʻO ka ʻaila maʻamau ka mea maka, akā hiki ke hoʻohana ʻia nā mea kanu e like me ka ʻuala, ke kulina a i ʻole ke kō i kāna hana ʻana. ʻO ka polyurethane kahi elastomer thermoplastic. ʻO ia ke ʻano he maʻalahi lākou i ka wā wela, akā hiki ke hoʻi i ko lākou ʻano kumu i ka wā i wela ai.
Loaʻa i ka polyurethane nā waiwai mechanical maikaʻi. ʻOi aku ka maikaʻi o ka ʻaʻahu ʻana, ka ʻoki ʻana a me ka pale ʻana i ka waimaka, a paʻa mau ka maʻalahi a hiki i nā haʻahaʻa haʻahaʻa. He mea kūpono kēia i ka PUR no nā noi e koi ana i ka neʻe ikaika a me nā koi kulou, e like me nā kaulahao huki. Ma nā noi robotic, hiki i nā kaula me ka puʻu PUR ke kū i nā miliona o nā pōʻai kūlou a i ʻole nā ikaika torsional ikaika me ka pilikia ʻole. He kū'ē ikaika ka PUR i ka aila, nā solvents a me ka radiation ultraviolet. Eia kekahi, ma muli o ke ʻano o ka mea, he halogen-free a me ka lapalapa ahi, ʻo ia nā mea koʻikoʻi no nā kaula i hōʻoia ʻia ʻo UL a hoʻohana ʻia ma United States. Hoʻohana maʻamau ʻia nā kaula PUR i ka mīkini a me ka hana ʻana i ka hale hana, ka ʻenehana ʻoihana, a me ka ʻoihana kaʻa.
PVC - ka mea nui loa
ʻO ka Polyvinyl chloride (PVC) he plastic i hoʻohana ʻia e hana i nā huahana like ʻole mai ka makahiki 1920. ʻO ia ka huahana o ka polymerization kaulahao o ka vinyl chloride. ʻO ka ʻokoʻa i ka elastomer PUR, ʻo PVC kahi polymer thermoplastic. Inā deformed ka mea ma lalo o ka wela, ʻaʻole hiki ke hoʻihoʻi ʻia i kona kūlana mua.
Ma ke ʻano he sheathing material, hāʻawi ka polyvinyl chloride i nā ʻano hana like ʻole no ka mea hiki iā ia ke hoʻololi i nā pono like ʻole ma o ka hoʻololi ʻana i kāna ratio haku mele. ʻAʻole i like ke kiʻekiʻe o kona hiki ke hoʻouka me ka PUR, akā ʻoi aku ka maikaʻi o ka PVC; ʻO ke kumukūʻai maʻamau o ka polyurethane ʻehā mau manawa kiʻekiʻe. Eia kekahi, ʻaʻohe mea ʻala o PVC a kū i ka wai, ka waikawa a me nā mea hoʻomaʻemaʻe. ʻO ia ke kumu i hoʻohana pinepine ʻia ai i ka ʻoihana meaʻai a i ʻole i nā wahi humid. Eia nō naʻe, ʻaʻole halogen ka PVC, ʻo ia ke kumu i manaʻo ʻia ʻaʻole kūpono ia no nā noi o loko. Eia kekahi, ʻaʻole ia he ʻaila kūʻokoʻa, akā hiki ke hoʻokō ʻia kēia waiwai e nā mea hoʻohui kemika kūikawā.
Ka hopena
Loaʻa i ka polyurethane a me ka polyvinyl chloride ko lākou mau pono a me nā hemahema e like me ke kaula a me nā mea uea sheathing. ʻAʻohe pane paʻa i ka mea ʻoi aku ka maikaʻi no kēlā me kēia noi; Nui ka hilinaʻi i nā pono pilikino o ka noi. I kekahi mau hihia, ʻoi aku ka maikaʻi o kahi mea sheathing ʻokoʻa loa. No laila, paipai mākou i nā mea hoʻohana e ʻimi i ka ʻōlelo aʻo mai nā poʻe loea i kamaʻāina i nā waiwai maikaʻi a maikaʻi ʻole o nā mea like ʻole a hiki ke kaupaona kekahi i kekahi.
Ka manawa hoʻouna: Nov-20-2024