He palaki PET i hoʻololi ʻia ʻo PETG. He palaki moakaka ia, he copolyester non-crystalline, ʻo ka comonomer PETG i hoʻohana pinepine ʻia ʻo 1,4-cyclohexanedimethanol (CHDM), ʻo ka inoa piha ʻo polyethylene terephthalate-1,4-cyclohexanedimethanol. Ke hoʻohālikelike ʻia me PET, ʻoi aku ka nui o nā comonomers 1,4-cyclohexanedimethanol, a ke hoʻohālikelike ʻia me PCT, ʻoi aku ka nui o nā comonomers ethylene glycol. No laila, ʻokoʻa loa ka hana o PETG mai ko PET a me PCT. He moakaka loa kāna huahana a he kūpaʻa hopena maikaʻi loa, kūpono loa no ka hana ʻana i nā huahana moakaka mānoanoa.
Ma ke ʻano he mea hoʻopili,PETGnā pono aʻe:
1. ʻOi aku ka mālamalama kiʻekiʻe, hiki i ka 90% o ka hoʻoili ʻana o ka mālamalama, hiki ke hiki i ka mālamalama o ka plexiglass;
2. He ikaika kona paʻakikī a me ka paʻakikī, kūpaʻa maikaʻi loa i ke kahakaha ʻana, kūpaʻa hopena a me ka paʻakikī;
3. Ma ke ʻano o ke kūpaʻa kemika, ke kūpaʻa aila, ka hana kūpaʻa i ke aniau (melemele), ka ikaika mechanical, a me ka hana pale i ka oxygen a me ka mahu wai, ʻoi aku ka maikaʻi o PETG ma mua o PET;
4. ʻAʻohe ʻawahia, hana hoʻomaʻemaʻe hilinaʻi, hiki ke hoʻohana ʻia no ka meaʻai, nā lāʻau lapaʻau a me nā ʻōpala ʻē aʻe, a hiki ke hoʻomaʻemaʻe ʻia e nā kukuna gamma;
5. Hoʻokō ia i nā koi o ka palekana o ke kaiapuni a hiki ke hana hou ʻia me ka hoʻokele waiwai a me ka maʻalahi. Ke puhi ʻia ka ʻōpala, ʻaʻohe mea ʻino e hoʻoweliweli i ke kaiapuni e hana ʻia.
Ma ke ʻano he mea hoʻopili,PETnā pono aʻe:
1. He maikaʻi nā waiwai mechanical, ʻo ka ikaika hopena he 3 ~ 5 mau manawa o nā kiʻiʻoniʻoni ʻē aʻe, maikaʻi ke kūpaʻa pelu ʻana, a he paʻakikī maikaʻi nō hoʻi ma -30°C;
2. Kūleʻa i ka ʻaila, ka momona, ka waikawa dilute, ka alkali dilute, a me ka hapa nui o nā mea hoʻoheheʻe;
3. Ka permeability haʻahaʻa o ke kinoea a me ka wai, ke kū'ē maikaʻi loa i ke kinoea, ka wai, ka aila a me ke ʻala;
4. ʻAʻohe ʻawahia, ʻono ʻole, maʻemaʻe a palekana hoʻi, hiki ke hoʻohana pololei ʻia i loko o ka ʻōpala meaʻai;
5. ʻOi aku ka haʻahaʻa o ke kumukūʻai o nā mea maka ma mua o PETG, a he māmā ke kaumaha o ka huahana i hoʻopau ʻia a kū i ka haki ʻana, he mea kūpono ia no nā mea hana e hōʻemi i nā kumukūʻai hana a me ka halihali, a kiʻekiʻe ka hana kumukūʻai holoʻokoʻa.
ʻOi aku ka maikaʻi o ka PETG ma mua o ka PET maʻamau i nā waiwai o ka ʻili e like me ka paʻi ʻana a me ka hoʻopili ʻana. Ua like ka transparency PETG me PMMA. ʻOi aku ka ikaika o ka paʻakikī, ka laumania, a me nā hiki ke hana ma hope o ka PETG ma mua o ka PET. Ke hoʻohālikelike ʻia me ka PET, ʻike maopopo ʻia ka hemahema o PCTG, ʻo ia hoʻi, he kiʻekiʻe loa ke kumukūʻai, ʻo ia hoʻi he 2 ~ 3 mau manawa o ka PET. I kēia manawa, ʻo ka hapa nui o nā mea ʻōmole hoʻopili ma ka mākeke he mau mea PET nui. Loaʻa i nā mea PET nā ʻano o ke kaumaha māmā, ke kiʻekiʻe o ka transparency, ke kūpaʻa i ka hopena a ʻaʻole palupalu.
Hōʻuluʻulu Manaʻo: ʻO PETG kahi mana i hoʻonui ʻia o PET, me ka ʻoi aku ka maopopo, ka paʻakikī kiʻekiʻe, ka pale ʻana i ka hopena maikaʻi aʻe, a ʻoiaʻiʻo hoʻi ke kumukūʻai kiʻekiʻe.
Ka manawa hoʻouna: Iulai-21-2023
