Taw qhia kho suab
Luv luv, PETG yog cov yas pob tshab, uas tsis yog-crystalline copolyester. Feem ntau siv comonomer ntawm PETG yog 1,4-cyclohexane dimethanol (CHDM), uas yog hu ua polyethylene terephthalate. Ester-1,4-cyclohexanedimethanol ester. Nws yog cov khoom ntawm polycondensation ntawm terephthalic acid (PTA), ethylene glycol (EG), thiab 1,4-cyclohexanedimethanol (CHDM). Piv nrog PET, nws muaj ntau dua 1,4-cyclohexane. Alkylene dimethanol comonomer muaj ethylene glycol comonomer ntau dua li PCT. Yog li ntawd, kev ua tau zoo ntawm PETG yog qhov sib txawv ntawm PET thiab PCT, thiab nws muaj nws qhov tshwj xeeb. Txog tam sim no, tsuas yog Eastman ntawm Tebchaws Meskas thiab SK ntawm Kaus Lim Qab Teb tau paub tab hauv ntiaj teb. Cov neeg sawv cev tseem ceeb ntawm Eastman PETG thiab SK PETG ntawm Kaus Lim Qab Teb yog Shanghai Lianmo Chemical Co., Ltd. thiab lwm yam. Raws li CHDM nyob rau hauv lub copolymer nce, lub melting point txo, lub iav hloov kub nce, thiab crystallinity txo, thiab thaum kawg ib amorphous polymer yog tsim. Feem ntau, cov ntsiab lus ntawm CHDM hauv PETG yog 30% -40%. Nws muaj cov viscosity zoo, pob tshab, xim, tshuaj lom neeg tsis kam, thiab tsis kam rau kev ntxhov siab. Nws tuaj yeem yog thermoformed lossis extrusion tshuab molded sai heev. Cov viscosity zoo dua li acrylic (acrylic). PETG' cov khoom lag luam yog pob tshab, zoo toughness, haum rau tsim cov khoom tuab-walled pob tshab, PETG muaj kev ua haujlwm zoo thiab tsim kev ua tau zoo, thiab tuaj yeem tsim nyob rau hauv txhua tus qauv raws li tus tsim qauv' s xav. Nws tuaj yeem siv cov txheej txheem extrusion, txhaj tshuaj molding, tshuab moulding thiab blister molding, thiab lwm yam. Cov txheej txheem molding tuaj yeem siv dav hauv kev ua lag luam ntawm daim hlau, nplooj ntawv, kev ua haujlwm siab shrink films, fwj thiab cov ntaub ntawv profiled. Nyob rau tib lub sijhawm, nws qhov kev ua haujlwm thib ob yog qhov zoo heev, thiab nws tuaj yeem hloov kho los ntawm cov pa machining.
PETG khoom taw qhia editor Suab
PET resin yog homopolyester linear los ntawm polycondensation ntawm glycol (ethylene glycol, EG) thiab dibasic acid (terephthalic acid, TPA), thaum copolyester yog polyester hloov nrog cawv los yog acid, muaj PETG, PCTG thiab PCTA thiab degradable copolyester.
PETG yog non-crystalline copolyester. Hauv nws cov txheej txheem tsim khoom, txij li qee qhov nyiaj ntawm ethylene glycol yog hloov los ntawm 1,4-cyclohexane dimethanol (CHDM), crystallization tuaj yeem tiv thaiv, yog li txhim kho kev tsim khoom thiab pob tshab. Nws cov khoom yog pob tshab heev thiab zoo heev hauv kev cuam tshuam tsis kam. Nws yog tshwj xeeb tshaj yog tsim rau kev tsim cov khoom tuab-walled pob tshab. Nws cov txheej txheem thiab kev ua haujlwm zoo heev. Nws tuaj yeem tsim los ntawm txhua tus qauv raws li tus tsim qauv' lub hom phiaj. Nws tuaj yeem siv cov tsoos extrusion, txhaj tshuaj molding, tshuab moulding thiab suction. Moulding txoj kev xws li cov yas tuaj yeem siv dav hauv kev ua lag luam ntawm daim hlau, cov ntawv txheeb, cov yeeb yaj kiab ua haujlwm siab, lub raj mis thiab cov ntaub ntawv profiled. Nyob rau tib lub sijhawm, nws muaj kev ua haujlwm zoo tshaj plaws theem nrab thiab tuaj yeem hloov kho los ntawm cov pa machining.
Cov yam ntxwv tseem ceeb ntawm PETG
Qhov zoo tshaj plaws thermoforming kev ua tau zoo
PETG nplooj ntawv yog ib qho yooj yim los tsim cov khoom nrog cov duab nyuaj thiab loj stretch ratios. Ntxiv mus, tsis zoo li PC board thiab cuam tshuam-hloov acrylic, lub rooj tsavxwm no tsis tas yuav tsum tau qhuav ua ntej thermoforming. Piv nrog PC board los yog acrylic, nws lub voj voog molding yog luv luv, qhov kub thiab txias yog tsawg, thiab cov yield yog siab dua.
Toughness
Cov ntawv extruded ntawm PETG daim ntawv feem ntau yog 15 mus rau 20 lub sij hawm tawv dua li cov acrylic dav dav thiab 5 mus rau 10 lub sij hawm tawv dua li qhov cuam tshuam-hloov acrylic. PETG daim ntawv muaj peev xwm txaus thaum ua, kev thauj mus los thiab siv, uas pab tiv thaiv kev tawg.
Huab cua tsis kam
PETG daim ntawv muab kev tiv thaiv huab cua zoo heev. Nws tuaj yeem tswj tau qhov toughness ntawm cov khoom thiab tiv thaiv yellowing. Nws muaj ultraviolet absorbers, uas tuaj yeem co-extruded rau hauv cov txheej txheem tiv thaiv los tiv thaiv lub rooj tsavxwm los ntawm kev puas tsuaj ntawm cov hluav taws xob ultraviolet.
Yooj yim rau txheej txheem
PETG daim ntawv tuaj yeem saws, tuag-txiav, drilled, punched, sheared, riveted, milled thiab txias-tsim yam tsis tawg. Kev khawb me ntsis ntawm qhov chaw tuaj yeem raug tshem tawm nrog rab phom cua kub. Solvent bonding kuj yog ib txwm ua haujlwm. Nws yog ib qho yooj yim rau txheej txheem ntau dua li acrylic, cuam tshuam hloov acrylic lossis PC board, thiab tuaj yeem ua tiav rau kev sib tsoo, electroplating, hluav taws xob zoo li qub thiab lwm yam kev ua haujlwm.
Cov tshuaj tiv thaiv zoo heev
PETG daim ntawv tuaj yeem tiv taus ntau yam tshuaj lom neeg thiab tshuaj tua kab mob.
Environmental tus phooj ywg
PETG daim ntawv substrates yog tag nrho cov ntaub ntawv tus phooj ywg ib puag ncig, uas ua tau raws li qhov yuav tsum tau muaj ntawm kev tswj xyuas zaub mov.
Kev lag luam
Nws yog pheej yig dua li lub rooj tsavxwm PC, thiab nws muaj zog dua li lub rooj tsavxwm PC.