PETG yog hloov PET yas. Nws yog cov yas pob tshab, uas tsis yog-crystalline copolyester, PETG feem ntau siv comonomer yog 1,4-cyclohexanedimethanol (CHDM), lub npe tag nrho yog polyethylene terephthalate-1,4-cyclohexanedimethanol. Piv nrog PET, muaj ntau dua 1,4-cyclohexanedimethanol comonomers, thiab piv nrog PCT, muaj ntau ethylene glycol comonomers. Yog li ntawd, kev ua tau zoo ntawm PETG yog qhov txawv ntawm PET thiab PCT. Nws cov khoom yog pob tshab heev thiab muaj kev cuam tshuam zoo heev, tshwj xeeb tshaj yog tsim rau kev tsim cov khoom tuab-walled pob tshab.
Raws li cov khoom ntim khoom,PETGmuaj qhov zoo hauv qab no:
1. siab dua transparency, lub teeb transmittance mus txog 90%, tuaj yeem ncav cuag lub pob tshab ntawm plexiglass;
2. Nws muaj zog rigidity thiab hardness, zoo heev khawb kuj, tej yam kuj thiab toughness;
3. Nyob rau hauv cov nqe lus ntawm cov tshuaj tiv thaiv, roj kuj, huab cua tsis kam (daj) kev ua tau zoo, txhua yam muaj zog, thiab kev ua haujlwm tsis zoo rau cov pa oxygen thiab dej vapor, PETG kuj zoo dua PET;
4. Tsis muaj tshuaj lom, txhim khu kev noj qab haus huv, tuaj yeem siv rau cov khoom noj, tshuaj thiab lwm yam ntim, thiab tuaj yeem ua kom tsis muaj menyuam los ntawm gamma rays;
5. Nws ua tau raws li qhov yuav tsum tau muaj ntawm kev tiv thaiv ib puag ncig thiab tuaj yeem rov ua dua kev lag luam thiab yooj yim. Thaum cov khib nyiab raug hlawv, yuav tsis muaj cov khoom tsim kev puas tsuaj uas tsim kev puas tsuaj rau ib puag ncig.
Raws li cov khoom ntim khoom,PETmuaj qhov zoo hauv qab no:
1. Nws muaj cov cuab yeej zoo, qhov cuam tshuam lub zog yog 3 ~ 5 npaug ntawm lwm cov yeeb yaj kiab, zoo folding tsis kam, thiab tseem muaj zog toughness ntawm -30 ° C;
2. Resistant roj, roj, dilute acid, dilute alkali, thiab cov kuab tshuaj feem ntau;
3. Tsawg roj thiab dej vapor permeability, zoo heev roj, dej, roj thiab tsw kuj;
4. Tsis muaj tshuaj lom, tsis qab, huv thiab nyab xeeb, tuaj yeem siv ncaj qha rau hauv ntim khoom noj;
5. Tus nqi ntawm cov khoom siv raw yog pheej yig dua PETG, thiab cov khoom tiav yog lub teeb hauv qhov hnyav thiab tiv thaiv kev tawg, uas yooj yim rau cov tuam txhab kom txo cov nqi tsim khoom thiab kev thauj mus los, thiab tag nrho cov nqi kev ua tau zoo yog siab.
PETG yog qhov zoo tshaj rau PET zoo tib yam hauv cov khoom nto xws li luam tawm thiab adhesion. PETG pob tshab yog piv rau PMMA. Lub hardness, smoothness, thiab tom qab ua tiav muaj peev xwm ntawm PETG muaj zog dua PET. Piv nrog PET, qhov tsis zoo ntawm PCTG kuj pom tseeb, uas yog, tus nqi siab heev, uas yog 2 ~ 3 npaug ntawm tus tsiaj. Tam sim no, feem ntau ntawm cov khoom ntim lub raj mis ntawm lub khw yog cov ntaub ntawv PET. PET cov ntaub ntawv muaj cov yam ntxwv ntawm lub teeb yuag, siab pob tshab, cuam tshuam tsis kam thiab tsis tawg.
Cov ntsiab lus: PETG yog ib qho kev hloov kho tshiab ntawm PET, nrog cov pob tshab siab dua, muaj zog dua, kev cuam tshuam zoo dua, thiab tau kawg tus nqi siab dua.
Post lub sij hawm: Lub Xya hli ntuj-21-2023