1) PBT muaj hygroscopicity tsawg, tab sis nws yog rhiab heev rau ya raws ntawm qhov kub thiab txias. Nws yuav degrade PBT molecules thaum lub sij hawmmoldingtxheej txheem, darken xim thiab tsim me ntsis ntawm qhov chaw, yog li nws yuav tsum feem ntau qhuav.
2) PBT yaj muaj fluidity zoo heev, yog li nws yog ib qho yooj yim los tsim nyias-walled, complex-shaped khoom, tab sis xyuam xim rau pwm flashing thiab nozzle drooling.
3) PBT muaj qhov pom tseeb melting point. Thaum qhov kub nce siab tshaj qhov melting point, lub fluidity yuav nce dheev, yog li yuav tsum tau them nyiaj rau nws.
4) PBT muaj qhov nqaim molding ntau yam, crystallizes sai sai thaum txias, thiab fluidity zoo, uas yog tshwj xeeb tshaj yog haum rau kev txhaj tshuaj sai.
5) PBT muaj qhov loj dua qhov shrinkage thiab shrinkage ntau yam, thiab qhov shrinkage tus nqi sib txawv ntawm cov lus qhia sib txawv yog pom tseeb dua lwm cov yas.
6) PBT yog qhov rhiab heev rau cov lus teb ntawm cov lus taw qhia thiab cov kaum ntse ntse. Kev ntxhov siab ntau yuav tshwm sim ntawm cov haujlwm no, uas txo qis lub peev xwm ntawm cov kabmob, thiab nws yuav ua rau tawg thaum raug quab yuam lossis cuam tshuam. Yog li ntawd, qhov no yuav tsum tau them sai sai rau thaum tsim cov khoom yas. Txhua lub ces kaum, tshwj xeeb tshaj yog cov ces kaum sab hauv, yuav tsum siv cov kev hloov pauv ntau li ntau tau.
7) Qhov elongation tus nqi ntawm PBT ntshiab tuaj yeem ncav cuag 200%, yog li cov khoom uas muaj kev nyuaj siab me tuaj yeem raug yuam tawm ntawm cov pwm. Txawm li cas los xij, tom qab sau cov iav fiber ntau los yog muab tub lim, nws qhov elongation txo qis heev, thiab yog tias muaj kev ntxhov siab hauv cov khoom, yuam demolding tsis tuaj yeem ua tiav.
8) Tus khiav ntawm PBT pwm yuav tsum luv luv thiab tuab yog tias ua tau, thiab tus khiav ncig yuav muaj qhov zoo tshaj plaws. Feem ntau, ob qho tib si hloov kho thiab tsis hloov kho PBT tuaj yeem siv nrog cov neeg khiav dej num zoo tib yam, tab sis iav fiber ntau siv PBT tsuas tuaj yeem muaj txiaj ntsig zoo thaum siv kub khiav molding.
9) Lub rooj vag taw tes thiab lub rooj vag latent muaj cov nyhuv shearing loj, uas tuaj yeem txo qhov pom tseeb viscosity ntawm PBT yaj, uas yog qhov zoo rau molding. Nws yog lub rooj vag uas nquag siv. Lub rooj vag txoj kab uas hla yuav tsum loj dua.
10) Lub rooj vag yog qhov zoo tshaj plaws rau lub ntsej muag cov kab noj hniav lossis cov tub ntxhais, kom tsis txhob txau thiab txo qhov txhaws ntawm cov yaj thaum ntws hauv cov kab noj hniav. Txwv tsis pub, cov khoom lag luam ua rau qhov tsis xws luag thiab deteriorates kev ua haujlwm.
Post lub sij hawm: Feb-18-2022
