PETG yog ib hom yas PET uas tau hloov kho. Nws yog ib hom yas pob tshab, ib hom copolyester uas tsis yog crystalline, 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 dua ethylene glycol comonomers. Yog li ntawd, kev ua tau zoo ntawm PETG txawv ntawm PET thiab PCT. Nws cov khoom yog pob tshab heev thiab muaj kev tiv thaiv zoo heev, tshwj xeeb tshaj yog tsim rau kev tsim cov khoom pob tshab tuab.
Ua ib yam khoom ntim khoom,PETGmuaj cov txiaj ntsig zoo li nram no:
1. Kev pom tseeb dua, lub teeb xa mus txog 90%, tuaj yeem ncav cuag qhov pom tseeb ntawm plexiglass;
2. Nws muaj zog dua thiab tawv dua, tiv taus khawb zoo heev, cuam tshuam tsis kam thiab tawv;
3. Hais txog kev tiv thaiv tshuaj lom neeg, kev tiv thaiv roj, kev tiv thaiv huab cua (daj), lub zog kho tshuab, thiab kev ua haujlwm thaiv cov pa oxygen thiab dej pa, PETG kuj zoo dua PET;
4. Tsis muaj tshuaj lom, kev ua haujlwm huv si, siv tau rau khoom noj, tshuaj thiab lwm yam ntim khoom, thiab tuaj yeem tua kab mob los ntawm gamma rays;
5. Nws ua tau raws li qhov yuav tsum tau ua ntawm kev tiv thaiv ib puag ncig thiab tuaj yeem rov ua dua tshiab tau yooj yim thiab pheej yig. Thaum cov khib nyiab raug hlawv, yuav tsis muaj cov tshuaj lom neeg uas ua rau ib puag ncig muaj kev phom sij.
Ua ib yam khoom ntim khoom,Tus tsiajmuaj cov txiaj ntsig zoo li nram no:
1. Nws muaj cov khoom siv kho tshuab zoo, lub zog cuam tshuam yog 3 ~ 5 npaug ntawm lwm cov yeeb yaj kiab, kev tiv thaiv zoo, thiab tseem muaj kev tawv zoo ntawm -30 ° C;
2. Tiv taus roj, rog, dilute acid, dilute alkali, thiab feem ntau cov kuab tshuaj;
3. Cov pa roj thiab dej tsis tshua muaj zog, cov roj zoo heev, dej, roj thiab tsw ntxhiab;
4. Tsis muaj tshuaj lom, tsis muaj saj, huv si thiab muaj kev nyab xeeb, siv tau ncaj qha rau hauv cov khoom noj khoom haus;
5. Tus nqi ntawm cov khoom siv raw pheej yig dua PETG, thiab cov khoom tiav lawm yog lub teeb hauv qhov hnyav thiab tiv taus kev tawg, uas yooj yim rau cov chaw tsim khoom kom txo cov nqi tsim khoom thiab kev thauj mus los, thiab tag nrho cov nqi ua tau zoo siab.
PETG zoo dua li PET ib txwm muaj hauv cov yam ntxwv ntawm qhov chaw xws li kev luam tawm thiab kev nplaum. PETG pob tshab zoo ib yam li PMMA. Qhov nyuaj, du, thiab kev ua tiav tom qab ntawm PETG muaj zog dua li PET. Piv nrog PET, qhov tsis zoo ntawm PCTG kuj pom tseeb, uas yog, tus nqi siab heev, uas yog 2 ~ 3 npaug ntawm PET. Tam sim no, feem ntau ntawm cov khoom siv ntim khoom hauv khw feem ntau yog cov khoom siv PET. Cov khoom siv PET muaj cov yam ntxwv ntawm qhov hnyav sib dua, pob tshab siab, tiv taus kev cuam tshuam thiab tsis yooj yim tawg.
Kev xaus lus: PETG yog ib qho kev hloov kho dua tshiab ntawm PET, nrog rau kev pom tseeb dua, kev tawv dua, kev cuam tshuam zoo dua, thiab tau kawg tus nqi siab dua.
Lub sijhawm tshaj tawm: Lub Xya Hli-21-2023
