Txhua yam koj yuav tsum paub txog PS cov khoom siv rau qhov zoo tshaj plaws carrier daim kab xev raw khoom

Cov khoom siv polystyrene (PS) yog ib qho kev xaiv nrov rau cov khoom siv ntaub nplaum vim nws cov khoom tshwj xeeb thiab kev tsim. Hauv tsab xov xwm no, peb yuav ua tib zoo saib PS cov khoom siv thiab sib tham seb lawv cuam tshuam li cas cov txheej txheem molding.

PS cov ntaub ntawv yog cov thermoplastic polymer siv nyob rau hauv ntau yam lag luam xws li ntim, electronics thiab tsheb. Hauv kev tsim cov kab xev cab nws yog qhov kev xaiv zoo heev vim nws txoj kev lag luam, rigidity thiab kub tsis kam.

Thaum siv PS cov ntaub ntawv raws li cov ntaub ntawv raw khoom, nws yuav tsum nkag siab txog nws cov yam ntxwv. Ua ntej, PS yog amorphous polymer, txhais tau tias nws tsis muaj cov qauv crystalline pom tseeb. Cov yam ntxwv no cuam tshuam rau nws cov khoom siv hluav taws xob thiab thermal, xws li txhav, brittleness, opacity thiab kub tsis kam.

Kev sib xyaw tshwj xeeb ntawm cov khoom ntawm PS cov ntaub ntawv ua rau lawv zoo tagnrho rau kev lag luam hluav taws xob. Tshwj xeeb, nws cov dej noo tsis kam ua kom muaj kev tiv thaiv cov khoom siv hluav taws xob thaum thauj lossis khaws cia. Tias yog vim li cas PS cov ntaub ntawv yog qhov kev xaiv nrov rau cov khoom siv ntaub nplaum.

Lwm qhov tseem ceeb ntawm PS cov ntaub ntawv yog nws cov formability. Ua tsaug rau nws cov viscosity tsawg, PS muaj qhov zoo tshaj plaws formability, ua kom tiav cov khoom zoo thiab cov sijhawm ua haujlwm tau zoo thaum tsim cov khoom siv raw khoom.

PS molding kev ua tau zoo
1. Cov khoom siv amorphous muaj qhov nqus dej tsawg, tsis tas yuav qhuav tag, thiab tsis yooj yim rau decompose, tab sis muaj cov thermal expansion coefficient loj thiab muaj kev ntxhov siab sab hauv. Nws muaj fluidity zoo thiab tuaj yeem ua molded nrog lub hau ntswj lossis plunger txhaj tshuab.
2. Nws yog qhov tsim nyog siv cov khoom siv kub, pwm kub kub, thiab kev txhaj tshuaj tsawg. Kev ncua sij hawm txhaj tshuaj yog qhov zoo los txo cov kev ntxhov siab sab hauv thiab tiv thaiv cov kab noj hniav thiab deformation.
3. Ntau hom rooj vag tuaj yeem siv tau, thiab lub rooj vag txuas nrog cov yas hauv ib qho arc kom tsis txhob muaj kev puas tsuaj rau cov yas thaum lub rooj vag. Qhov demoulding nqes hav yog loj, thiab ejection yog uniform. Cov phab ntsa tuab ntawm cov yas yog ib yam, thiab tsis muaj cov ntxig ntau li ntau tau, xws li Inserts yuav tsum tau preheated.
Txhawm rau ua kom tiav, PS cov khoom yog qhov kev xaiv zoo tshaj plaws rau cov khoom siv ntaub nplaum vim nws cov khoom tshwj xeeb thiab kev tsim kho. Raws li cov thermoplastic polymer, PS yog kev lag luam, nruj thiab kub resistant. Tsis tas li ntawd, nws cov dej tsis kam ua rau nws zoo tagnrho rau kev tiv thaiv cov khoom siv hluav taws xob thaum thauj thiab khaws cia.

Kev nkag siab txog PS cov khoom siv thiab lawv cov kev cuam tshuam ntawm cov txheej txheem tsim yog qhov tseem ceeb rau kev ua kom zoo dua cov khoom siv kab xev. Los ntawm kev xaiv cov khoom zoo PS, peb tuaj yeem tsim cov kab xev xaim uas zoo thiab ua haujlwm siab, ua kom muaj kev vam meej ntawm txhua yam khoom siv hluav taws xob.