nthuav polystyrene ua npuas ncauj yog tsim los ntawm kev siv tshuab tshwj xeeb. Cov txheej txheem tsim khoom tau muab faib ua ob peb theem. Cov khoom siv rau kev tsim khoom yog ib qho kev nthuav dav polystyrene.
Thaum thawj theem, cov khoom siv ntuj tsim, pentane, yog siv. Cov khoom no yog tus yam ntxwv ntawm lub peev xwm sai sai decompose nyob rau hauv av, dej thiab cua. Nyob rau hauv tus ntawm pentane, foaming ntawm polystyrene yog nqa tawm. Tom qab ntawd cov granules yog rhuab. Rau qhov no, dej vapor yog siv. Qhov tshwm sim yog ib tug uniformly foamed loj. Qhov loj no muaj ib tug nyias kaw-cell qauv. Hauv ib lub cubic meter ntawm cov khoom no, huab cua concentration yog cuaj caum-yim feem pua. Cov huab cua yog nyob rau hauv ob peb billion kaw hlwb. Expanded polystyrene ua npuas ncauj muaj ib tug tshwj xeeb sab hauv cov qauv uas muab tsawg thermal conductivity ntawm cov khoom. Qib ntawm thermal conductivity ntawm cov khoom zoo ib yam li cov cua tseem.
Foamed polystyrene ua npuas ncauj, ua los ntawm cov txheej txheem saum toj no, solidifies thaum txias thiab yog ib qho hnyav. Cov pawg no suav nrog cov hlwb kaw uas muaj cua. Qhov zoo ntawm cov khoom tshwm sim nyob ntawm cov khoom siv,uas tau siv thaum lub sij hawm tsim khoom. Tsis muaj qhov tseem ceeb me me yog cov khoom siv raw uas nthuav dav polystyrene ua. Ua Npuas Ncauj Blocks - yog cov khoom siv rau kev tsim cov khoom siv hauv cov lus nug. Thaum tawg, ua npuas ncauj zoo li cov pob nplaum ua ke.
Cov khoom siv yog lub rhaub. Expanded polystyrene muaj ib tug tsawg thermal conductivity, theem ntawm uas nce nrog nce ceev. Cov khoom yog noo noo resistant. Nthuav polystyrene ua npuas ncauj tsis o hauv dej thiab tsis yaj hauv nws. Lub xub ntiag ntawm cov qauv tsis sib txuas ntawm cov hlwb uas muaj huab cua yuav luag tag nrho tiv thaiv kev nkag mus ntawm cov dej noo. Txawm hais tias cov dej noo nkag mus ntawm cov fused granules, cov dej yuav tawm sai sai yam tsis muaj kev cuam tshuam rau nws. Nyob rau hauv tej yam kev mob ntawm high humidity tsis adversely cuam tshuam rau cov khoom - nws tsis hloov nws loj, mechanical zog, tsos, los yog insulating yam ntxwv. Yog tias cov txheej txheem tsim khoom suav nrog kev ua kom zoo ntawm cov pwm molding, uas tso cai rau kom nce qib ntawm fusion ntawm cov granules, ces cov dej nqus tuaj yeem txo qis.
Nyob rau theem vapor, kua tuaj yeem nkag mus rau hauv Styrofoam. Chav yuav tawm thiab nkag mus rau cov khoom ntawm tib lub nrawm. Yog tias nws hloov mus ua kua, ces tej zaum yuav muaj teeb meem.
Ntxiv rau lwm yam zoo, cov khoom siv tiv taus cov ntxhia ntxhib ntxhib ntxhib los mos. Styrofoam tau tshajnrog gypsum, cement, av nplaum, bitumen, txiv qaub thiab lwm yam khoom siv hauv kev tsim kho thiab kho kom zoo nkauj. Cov khoom siv kuj tiv taus ntau yam tshuaj lom neeg.
