PETG ndi kusinthidwa PET pulasitiki. Ndi pulasitiki mandala, si crystalline copolyester, PETG ambiri ntchito comonomer ndi 1,4-cyclohexanedimethanol (CHDM), dzina lonse ndi polyethylene terephthalate-1,4-cyclohexanedimethanol. Poyerekeza ndi PET, pali zowonjezereka za 1,4-cyclohexanedimethanol, ndipo poyerekeza ndi PCT, pali ethylene glycol comonomers ambiri. Choncho, ntchito ya PETG ndi yosiyana kwambiri ndi PET ndi PCT. Zogulitsa zake ndi zowonekera kwambiri ndipo zimakhala ndi mphamvu zotsutsa, makamaka zoyenera kupanga zinthu zowoneka bwino zokhala ndi mipanda.
Monga zinthu zopangira,PETGili ndi zabwino izi:
1. Kuwonekera kwapamwamba, kutulutsa kuwala mpaka 90%, kumatha kufikira kuwonekera kwa plexiglass;
2. Ili ndi kulimba kolimba ndi kuuma, kukana kwambiri kukanda, kukana komanso kulimba;
3. Pankhani ya kukana kwa mankhwala, kukana kwa mafuta, kukana kwa nyengo (chikasu) kugwira ntchito, mphamvu zamakina, ndi ntchito zolepheretsa mpweya ndi mpweya wa madzi, PETG imakhalanso yabwino kuposa PET;
4. Zopanda poizoni, zodalirika zaukhondo, zitha kugwiritsidwa ntchito ngati chakudya, mankhwala ndi zoyika zina, ndipo zitha kutsekedwa ndi cheza cha gamma;
5. Imakwaniritsa zofunikira zachitetezo cha chilengedwe ndipo imatha kubwezeretsedwanso mwachuma komanso mosavuta. Zinyalala zikatenthedwa, palibe zinthu zovulaza zomwe zingawononge chilengedwe zomwe zidzapangidwe.
Monga zinthu zopangira,PETili ndi zabwino izi:
1. Imakhala ndi makina abwino, mphamvu zogwira ntchito ndi 3 ~ 5 nthawi za mafilimu ena, kukana kwabwino kopinda, ndipo kumakhalabe ndi mphamvu yabwino pa -30 ° C;
2. Kusamva mafuta, mafuta, asidi osungunuka, kusungunula alkali, ndi zosungunulira zambiri;
3. Low mpweya ndi nthunzi permeability, mpweya wabwino, madzi, mafuta ndi fungo kukana;
4. Zopanda poizoni, zopanda pake, zaukhondo komanso zotetezeka, zitha kugwiritsidwa ntchito mwachindunji pakuyika chakudya;
5. Mtengo wa zipangizo ndi wotsika mtengo kuposa PETG, ndipo chotsirizidwa ndi chopepuka komanso chosagwirizana ndi kusweka, chomwe chiri choyenera kwa opanga kuti achepetse ndalama zopangira ndi zoyendetsa, ndipo mtengo wamtengo wapatali ndi wapamwamba.
PETG ndi wapamwamba kuposa PET wamba mu katundu pamwamba monga printability ndi adhesion. PETG mandala angafanane ndi PMMA. The kuuma, kusalala, ndi pambuyo processing mphamvu za PETG ndi wamphamvu kuposa PET. Poyerekeza ndi PET, kuipa kwa PCTG kukuwonekeranso, ndiko kuti, mtengo ndi wokwera kwambiri, womwe ndi 2 ~ 3 nthawi za PET. Pakadali pano, zida zambiri zamabotolo zomangira pamsika ndi zida za PET. Zida za PET zili ndi mawonekedwe a kulemera kopepuka, kuwonekera kwakukulu, kukana kukhudzidwa komanso kusalimba.
Mwachidule: PETG ndi mtundu wokwezedwa wa PET, wowonekera kwambiri, wolimba kwambiri, kukana bwino, komanso mtengo wokwera.
Nthawi yotumiza: Jul-21-2023