Dab tsi yog Tritan thiab PCTG yog dab tsi?
Tritan yog PCTG-qhov kub-txias, nrog qhov kub tsis kam ntawm 99-109 degrees. Cov qauv sawv cev yog TX1001, TX2001, EX401 (hais tawm: Eastman sau npe cov cim lag luam). PCTG keeb kwm los ntawm Eastman txij thaum pib. Raws li kev coj ua, PCTG yog lub npe khoom lag luam loj, thiab Tritan yog cov lag luam sau npe los ntawm Eastman, uas yog qhov peb hu LOGO (tam sim no tsuas yog ib qho). Nws tseem tuaj yeem raug hu sib txawv raws li cov neeg sib txawv' s lub hom phiaj. Piv txwv li, TX1001. Piv txwv li, feem ntau cov neeg uas ua cov khob haus dej, cov tais me nyuam, thiab cov taub mis menyuam hu ua Tritan. Yog tias lawv tsuas yog cov khoom zoo tib yam nkaus, feem ntau cov neeg hu ua PCTG TX1001. Tritan thiab PCTG muaj qhov tsis sib xws: qib zaub mov, tsis muaj bisphenol A (BPA). Nws' s tsuas yog tias Tritan txawv me ntsis ntawm PCTG zoo tib yam. Yog li Tritan (TX1001 TX2001 EX401) kuj yog hom PCTG, tab sis lub npe txawv. Tritan raw khoom: lub npe tag nrho: Tritan Copolyester, lub cim tshiab ntawm copolyester tsim los ntawm Eastman Lub Tuam Txhab. Vim cov neeg' s nrhiav kev ua lub neej zoo thiab noj qab haus huv, kev ua lag luam' s kev tiv thaiv ib puag ncig rau cov khoom siv yas yas tseem nce ntxiv. Piv txwv li, PC yuav tsim BPA (bisphenol-A) tom qab hydrolysis. Cov kev tshawb fawb tsis ntev los no tau pom tias kev mus sij hawm ntev ntawm cov kab BPA los ntawm tib neeg (suav nrog tsiaj) yog qhov yuav muaj kev cuam tshuam loj dua ntawm kev muaj me nyuam thiab cuam tshuam qhov sib npaug ntawm kev sib deev. Yog li, qee lub tebchaws thiab cheeb tsam tau txwv lossis txwv tsis pub PC. Cov neeg tsim khoom tau ntsib qhov kev nyuaj siab ib puag ncig thiab tab tom nrhiav rau cov ntaub ntawv uas tuaj yeem hloov PC. Nws yog nyob rau hauv cov ntsiab lus no kev ua lag luam uas Eastman tau tsim lub cim tshiab ntawm copolyester Tritan.
PCTG yas ua raw khoom: pob tshab yas, amorphous copolyester, cov neeg siv tshuaj feem ntau ntawm PCTG yog 1,4-cyclohexane dimethanol (CHDM), lub npe tag nrho yog polyethylene terephthalate -1,4-Cyclohexane dimethanol ester. Nws yog cov khoom lag luam polycondensation ntawm terephthalic acid (PTA), ethylene glycol (EG) thiab 1,4-cyclohexanedimethanol (CHDM) los ntawm cov txheej txheem transesterification, uas yog 1,4 ntau dua li PET -Cyclohexane dimethanol comonomer muaj ntau ethylene glycol comonomer ntau dua PCT Cov. Yog li ntawd, qhov ua tau zoo ntawm PCTG yog qhov txawv ntawm PET thiab PCT. PCTG yog amorphous copolyester. Nrog rau qhov nce ntawm CHDM hauv cov copolymer, lub ntsiab lus melting poob, lub iav hloov kub nce zuj zus, thiab cov crystallinity tsawg zuj zus, thiab thaum kawg ib qho amorphous polymer tau tsim. Feem ntau, cov ntsiab lus ntawm CHDM hauv PCTG yog 30% -40%.
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