Txhua yam koj yuav tsum paub txog PS cov khoom siv rau cov cab kuj zoo tshaj plaws cov khoom siv

Polystyrene (PS) Xaiv yog qhov chaw nyiam rau cov cab kuj cov ntaub ntawv cov ntaub ntawv luam tawm vim nws qhov tshwj xeeb thiab muaj peev xwm. Hauv tsab xov xwm no, peb yuav coj tus saib ze tshaj plaws ntawm PS cov khoom siv thiab sib tham txog seb lawv cuam tshuam li cas cov txheej txheem moulding.

Cov khoom siv not yog ib thermoplicity polymer siv nyob rau hauv ntau yam kev lag luam xws li ntim, electronics thiab tsheb. Hauv cov cab hlau ntau lawm nws yog qhov kev xaiv zoo heev vim nws txoj kev lag luam, rigidity thiab kub tsis kam.

Thaum siv cov khoom siv PS khoom siv ua cov cab kuj daim hlau cov khoom siv, nws yog qhov tsim nyog kom nkag siab txog nws cov yam ntxwv. Ua ntej, PS yog amorphous polymer, lub ntsiab lus nws tsis muaj cov qauv siv crystalline. Cov xeeb ceem no cuam tshuam nws cov khoom siv tshuab thiab cua sov, uas yog tawv nqaij tawv, opritleness, opacity thiab kub ua hauj lwm.

Qhov tshwj xeeb ua ke ntawm cov khoom ntawm cov ntaub ntawv PS ua rau lawv zoo tagnrho rau kev lag luam hluav taws xob. Tshwj xeeb, nws noo noo tiv thaiv ua kom muaj kev tiv thaiv hluav taws xob thaum thauj lossis cia. Tias yog vim li cas ps cov khoom yog qhov kev xaiv nrov rau cov cab kuj cov ntaub ntawv cov khoom siv.

Lwm qhov tseem ceeb ntawm cov khoom siv yog nws cov qauv muaj peev xwm. Ua tsaug rau nws cov qis melt viscosity, PS muaj cov txheej txheem zoo heev, lub sijhawm zoo thaum ua cov cab kuj cov cab nyoos.

PS Moulding Kev Ua Haujlwm
1. Amorphous cov khoom siv tsis muaj kev nqus tau yooj yim, tsis tas yuav tsum tau qhuav tag nrho, thiab tsis yooj yim rau kev poob siab, tab sis muaj qhov kev ntxhov siab loj thiab muaj feem cuam tshuam rau sab hauv kev ntxhov siab. Nws muaj cov kua zoo thiab tuaj yeem muab pwm nrog lub hau ntswj lossis nqus hlau.
2. Nws yog qhov tsim nyog siv cov khoom siv kub siab, muaj pwm siab dua thiab kub thiab txias. Lub sijhawm muaj kev txhaj tshuaj kom muaj txiaj ntsig zoo los txo cov kev ntxhov siab sab hauv thiab tiv thaiv kom tsis txhob tawg thiab deformation.
3. Ntau hom rooj vag tuaj yeem siv, thiab lub rooj vag txuas nrog rau ib feem ntawm cov yas hauv ARC kom tsis txhob muaj kev puas tsuaj rau lub rooj vag. Qhov remeloulding txoj kab nqes yog loj, thiab kev lom zem yog hnav khaub ncaws. Lub phab ntsa tuab ntawm cov yas yog niaj hnub hnav, thiab tsis muaj kev nkag tau ntau li ntau tau, xws li cov ntxig yuav tsum yog preheated preheated.
Txhawm rau suav, cov khoom siv tau yog qhov kev xaiv zoo rau cov cab kuj cov ntaub ntawv nyoos cov ntaub ntawv pov tseg vim tias nws cov khoom tshwj xeeb thiab muaj peev xwm. Raws li cov thermoplicity polymer, ps yog nyiaj txiag, tsis yeem cuam tshuam thiab kub tiv taus. Ib qho ntxiv, nws cov kev tiv thaiv noo ua rau nws zoo tagnrho rau kev tiv thaiv cov hluav taws xob hluav taws xob thaum thauj thiab cia.

To taub cov khoom siv khoom siv thiab lawv cov kev cuam tshuam rau cov txheej txheem tsim yog qhov tseem ceeb rau kev ua kom zoo dua cov kab xev cov kab xev. Los ntawm kev xaiv hwm cov ntaub ntawv PS, peb tuaj yeem tsim cov tuam txhab nqa khoom ntawm cov khoom lag luam zoo thiab ua tau zoo, ua kom muaj kev vam meej ntawm cov khoom siv hluav taws xob.