Polyethylene Haʻahaʻa Haʻahaʻa
Polyethylene Haʻahaʻa Haʻahaʻa,
Polyethylene Haʻahaʻa Haʻahaʻa,
ʻO ka polyethylene haʻahaʻa haʻahaʻa (LDPE) he resin synthetic me ka hoʻohana ʻana i ke kaʻina hana kiʻekiʻe ma o ka polymerization radical manuahi o ka ethylene a no laila ua kapa ʻia ʻo ia ʻo "high-pressure polyethylene".No ka mea he nui nā lālā lōʻihi a pōkole o kāna kaulahao molekala, ʻoi aku ka liʻiliʻi o ka LDPE ma mua o ka polyethylene kiʻekiʻe (HDPE) a ʻoi aku ka haʻahaʻa.Hōʻike ia i ka māmā, hiki ke maʻalahi, maikaʻi ke kūpaʻa hau a me ka hopena.Paʻa kemika ʻo LDPE.He kūpaʻa maikaʻi kona i nā waikawa (koe naʻe nā waikawa oxidizing ikaika), alkali, paʻakai, nā waiwai insulation uila maikaʻi loa.He haʻahaʻa kona komo ʻana i ka mahu.Loaʻa i ka LDPE ka wai kiʻekiʻe a me ka hana maikaʻi.He kūpono ia no ka hoʻohana ʻana i nā ʻano hana hana thermoplastic a pau, e like me ka hoʻoheheʻe ʻana, ka hoʻoheheʻe extrusion, ka hoʻoheheʻe ʻana, ka rotomolding, ka uhi ʻana, ka puaʻa, ka thermoforming, ka welding hot-jet a me ka welding thermal.
Palapala noi
Hoʻohana nui ʻia ka LDPE no ka hana ʻana i nā kiʻiʻoniʻoni.Hoʻohana nui ʻia ia i ka hana ʻana i nā kiʻiʻoniʻoni mahiʻai (mulching film a me shed film), kiʻi ʻoniʻoni (no ka hoʻohana ʻana i nā lole lole, nā mea kanu a me nā meaʻai maloʻo), kiʻi ʻoniʻoni no ka hoʻopili wai (no ka hoʻohana ʻana i ka waiū paʻa, soy sauce, wai, ʻeke pīni a me ka waiu soy), ʻeke ʻeke kaumaha kaumaha, kiʻiʻoniʻoni hoʻohaʻahaʻa, kiʻi elastic, kiʻi ʻoniʻoni, kiʻi hoʻohana hale, kiʻiʻoniʻoni hoʻopihapiha hoʻopihapiha a me nā ʻeke meaʻai.Hoʻohana nui ʻia ʻo LDPE i ka hana ʻana i ka uea a me ke kaula insulation sheath.ʻO LDPE i hoʻopaʻa ʻia ʻo Cross-linked ka mea nui i hoʻohana ʻia i ka papa insulation o nā kaula uila kiʻekiʻe.Hoʻohana pū ʻia ʻo LDPE i ka hana ʻana i nā huahana i hoʻoheheʻe ʻia (e like me nā pua artificial, nā mea lapaʻau, nā lāʻau lapaʻau a me nā mea hoʻopili meaʻai) a me nā paipu extrusion-molded, nā pā, nā uea a me nā uhi kelepona a me nā huahana plastic profiled.Hoʻohana ʻia ʻo LDPE no ka hana ʻana i nā huahana hollow blow-molded e like me nā ipu no ka mālama ʻana i ka meaʻai, ka lāʻau lapaʻau, nā mea hoʻonaninani a me nā huahana kemika, a me nā pahu.
Pūʻolo, Waihona a me ka lawe ʻana
ʻO LDPE kahi pōkole no Low Density Polyethylene.Hana ʻia ka polyethylene e ka polymerization o ka ethylene.(Poly 'o ia ho'i 'nui'; 'oia'i'o, 'o ia ho'i ka nui o ka ethylene).Loaʻa ka Ethylene ma ka haki ʻana i kahi mea hoʻoheheʻe ʻaila māmā e like me ka naphtha.
Loaʻa ka haʻahaʻa haʻahaʻa e ke kaʻina polymerization kiʻekiʻe.Hana kēia i nā molekala me nā lālā ʻaoʻao he nui.ʻO nā lālā ʻaoʻao e hōʻoia i ka haʻahaʻa o ka degere o ka crystallization.ʻO ia hoʻi, ma muli o ko lākou ʻano ʻano like ʻole, ʻaʻole hiki i nā molekole ke moe i loko a i ʻole ma luna o kekahi ma ke ʻano i hoʻonohonoho pono ʻia, i ʻole ka liʻiliʻi o lākou i kahi ākea.ʻO ka haʻahaʻa o ka degere o ka crystallization, ʻo ka haʻahaʻa haʻahaʻa o kahi mea.
ʻO kahi laʻana maikaʻi o kēia i ke ola o kēlā me kēia lā ʻo ka wai a me ka hau.ʻO ka hau ka wai ma kahi kūlana crystallized (kiʻekiʻe), a no laila ʻoi aku ka māmā ma mua o ka wai (hau hehee).
ʻO LDPE kahi ʻano thermoplastic.He plastik ia e palupalu ke hoʻomehana ʻia, ʻaʻole like me ka laʻa.Hana kēia i nā thermoplastics kūpono no ka hoʻohana hou ʻana.Ma hope o ka hoʻomehana ʻana, hiki ke lawe ʻia i nā ʻano ʻē aʻe i makemake ʻia.
