PBT moulding processability
1. PBT muaj tsawg tus hygroscopicity, tab sis lub voj nyob rau hauv high temperature yog ntau sensitive. Thaum lub txheej txheem molding, ua rau cov PBT lwg me me, cov xim yuav tsaus nti, thiab cov nplaim yuav tsuas xuas, ces nws yuav tsum tau qhuav.
2. PBT yaj yog muaj kuab zoo heev, yog li nws yooj yim rau cov khoom sib cais thiab cov khoom sib dlej zoo, tab sis them nyiaj rau pwm pob zeb thiab lub taub hau lub taub hau.
3. PBT muaj qhov taw qhia txawv txav. Thaum lub ntsuas kub nce saum toj siab zom zaws, qhov fluidity yuav dheev nce, tshwj xeeb tshaj yog cov xim.
4. PBT molding ua ntau yam yog nqaim, cov crystallization yog ceev thaum twg txias, thiab cov fluidity zoo, uas yog qhov tseem ceeb tshaj rau kev txhaj tshuaj ceev.
5. PBT muaj qhov sib zog loj thiab nws txoj kev sib yeem, thiab qhov sib txawv ntawm qhov kev sib txawv hauv cov lus qhia ntau yog ntau dua li lwm yam khoom siv.
6. PBT tseem ceeb rau cov tshuaj tiv thaiv ntawm qhov tsis txaus siab thiab ntse pob. Qhov kev nyuab siab muaj nyob rau ntawm cov chaw no, uas ua rau kom muaj peev xwm thiab ua rau ntes thaum muaj kev nyuab siab lossis kev cuam tshuam. Yog li ntawd, yuav tsum tau them nyiaj rau cov qauv siv khoom yas. Tag nrho cov ces kaum, tshwj xeeb tshaj yog cov fab sab nraud, yuav tsum tau siv cov khoom siv ntau zaus kom ntau li ntau tau.
7. Ntshiab PBT muaj qhov ntev txog li ntawm 200%, yog li cov khoom uas muaj kev nyuab siab me tuaj yeem yuam kom tso tawm los ntawm pwm. Txawm li cas los xij, tom qab uas tau ntim cov iav los yog muab tub lim, qhov elongation kuj txo qis, thiab yuam kev tso tawm yuav tsis ua yog tias muaj kev nyuab siab hauv qhov khoom.
8. Txoj kev txaus siab ntawm PBT pwm zoo dua yog luv luv thiab tuab nyob rau hauv qhov kev tshwm sim, thiab txoj kab khiav qis yog qhov zoo tshaj plaws. Feem ntau, ob leeg pauv thiab siv PBT tuaj yeem siv rau hauv kev khiav tsis zoo, tab sis iav fiber reinforced PBT tuaj yeem siv rau kev khiav kub mould kom muaj teebmeem zoo.
9. Lub taw tes taw tes thiab lub rooj vag latent muaj qhov txav loj txav, uas tuaj yeem txo qhov viscosity pom ntawm lub PBT yaj, uas yog siv rau lub molding. Nws yog qhov rooj siv heev uas siv, thiab lub qhov rooj ntawm lub qhov rooj yuav tsum loj dua.
10. Lub rooj vag nws zoo nkaus li tig mus rau hauv cov kab noj hniav los yog lub hauv paus thiaj li kom tsis txhob kis tau thiab txo qis ntawm lub yaj thaum nws ntws los ntawm kab noj hniav. Txwv tsis pub, tsab xov xwm no yog qhov teeb meem ntawm qhov chaw tsis raws cai thiab ua rau kev poob siab.
