ʻO ka polyethylene terephthalate ʻO ke ʻano kemika ʻo -OCH2-CH2OCOC6H4CO- inoa Pelekane: polyethylene terephthalate, i hoʻopau ʻia ʻo PET, he polymer kiʻekiʻe, i loaʻa mai ka hopena condensation dehydration o ka ethylene terephthalate.Loaʻa ka Ethylene terephthalate e ka esterification reaction o terephthalic acid a me ka ethylene glycol.He waiu keʻokeʻo a i ʻole melemele ʻōmaʻomaʻo ʻo PET, polymer crystalline kiʻekiʻe me ka ʻili ʻālohilohi.Loaʻa iā ia nā waiwai kino a me nā mechanical i kahi ākea ākea.Hiki i ka mahana hoʻohana lōʻihi ke hiki i 120 ° C.ʻOi aku ka maikaʻi o ka insulation uila.ʻOiai i ka wela kiʻekiʻe a me ke alapine kiʻekiʻe, ʻoi aku ka maikaʻi o kāna mau waiwai uila, akā maikaʻi ʻole ka pale corona.He maikaʻi loa ke kūpaʻa ʻana o ka creep, ka luhi luhi, ka friction, a me ke kūpaʻa dimensional.
pono
1, loaʻa iā ia nā waiwai mechanical maikaʻi, ʻo ka ikaika o ka hopena he 3 ~ 5 mau manawa o nā kiʻiʻoniʻoni ʻē aʻe, a maikaʻi ke kūpaʻa ʻana.
2, kū'ē i ka aila, ka momona, dilute acid, dilute alkali, a me ka hapa nui o nā solvents.
3, loaʻa iā ia ke kūpaʻa wela kiʻekiʻe a haʻahaʻa.Hiki ke hoʻohana ʻia no ka manawa lōʻihi i ka pae wela o 120 ℃, a hiki ke kū i ka wela kiʻekiʻe o 150 ℃ a me ka haʻahaʻa haʻahaʻa o -70 ℃ i ka hoʻohana pōkole, a ʻo nā mea mechanical o ke kiʻekiʻe a me ka haʻahaʻa haʻahaʻa he liʻiliʻi ka hopena.
4, kinoea a me ka wai mahu permeability haʻahaʻa, 'o ia hoʻi, he maikai kinoea, ka wai, ka aila a me ka ala kū'ē.
5, ke aniani kiʻekiʻe, hiki ke pale i nā kukui ultraviolet, nani maikaʻi.
6, non-toxic, tasteless, good hygiene and safety, hiki ke hoʻohana pololei ʻia no ka ʻai meaʻai.
ʻO ka PET he keʻokeʻo keʻokeʻo a i ʻole melemele māmā polymer crystalline maikaʻi loa me ka ʻili maʻemaʻe a ʻālohilohi.ʻO ke kūpaʻa creep maikaʻi, ke kūpaʻa luhi, ke kūpaʻa friction a me ke kūpaʻa dimensional, ka haʻahaʻa haʻahaʻa a me ka paʻakikī kiʻekiʻe, me ka ʻoi loa o ka paʻakikī ma waena o nā mea thermoplastic: ʻoi aku ka maikaʻi o ka uila, ka haʻahaʻa haʻahaʻa haʻahaʻa, akā maikaʻi ʻole ka pale corona.ʻO ka mahana, ke kū'ē i ka wā, ke kūpaʻa kūpaʻa maikaʻi, ka haʻahaʻa haʻahaʻa o ka wai, ke kū'ēʻana i nā meaʻawaʻawa nāwaliwali a me nā mea hoʻohenehene, akā,ʻaʻole i hoʻokomoʻia i loko o ka wai wela a me ka alkali.ʻO ka PET resin he kiʻekiʻe ke aniani hoʻololi wela, lohi crystallization wikiwiki, lōʻihi pōʻaiapili pōʻaiapuni, lōʻihi pōʻaiapili shrinkage, nui molding shrinkage, ilihune dimensional paʻa, brittleness o ke aniani molding, a me ka haʻahaʻa wela kū'ē.Ma o ka hoʻomaikaʻi ʻana i ka mea nucleating agent, crystallization agent a me ke aniani fiber reinforcement, PET nā hiʻohiʻona aʻe i hoʻohui ʻia i nā waiwai o PBT:
1, ʻo ka wela wela a me ka mahana hoʻohana lōʻihi ka mea kiʻekiʻe loa ma waena o nā mea hana maʻamau thermoplastic.
2, ma muli o kona kūpaʻa wela kiʻekiʻe, hoʻokomo ʻia ʻo PET i loko o kahi ʻauʻau solder ma 250 ° C no 10 kekona, a aneane ʻaʻole e loli ke kala.He kūpono loa ia no ka hoʻomākaukau ʻana i nā ʻāpana uila a me nā ʻāpana uila.
3, ʻo ka ikaika kulou ʻo 200Mpa, ʻo ka modulus elastic he 4000Mpa, maikaʻi loa ke kolo a me ke kūpaʻa luhi, kiʻekiʻe ka paʻakikī o ka ʻili, a ua like nā ʻano mechanical me nā plastic thermosetting.
4, no ka mea, ʻo ka ethylene glycol i hoʻohana ʻia i ka hana ʻana i ka PET ʻaneʻane ka hapalua o ke kumu kūʻai o ka butylene glycol i hoʻohana ʻia i ka hana ʻana, ʻo ka resin PET a me ka PET hoʻoikaika ʻia ke kumu kūʻai haʻahaʻa loa ma waena o nā plastics engineering a loaʻa ke kumu kūʻai kiʻekiʻe.