Qhov chaw cia ntawm PVC rau cov hlwv ntim tsuas yog suav nrog cov hauv qab no:
Qhov kub thiab txias: Cov khoom siv yuav tsum khaws cia rau hauv ib puag ncig txias thiab qhuav thaum lub sijhawm cia, thiab qhov kub yuav tsum nyob hauv qab 30 degree. Kev ntsuas kub ntau dhau yuav ua rau cov khoom siv pvc cov khoom muag kom muag muag thiab deform, cuam tshuam nws txoj kev ua tau zoo thiab kev pabcuam lub neej.
Vaum noo: Cov ntaub ntawv PVC yuav tsum muab cia rau hauv ib puag ncig nrog cov txheeb ze cov av noo ntawm 45% kom tiv thaiv cov khoom los ntawm Hygroscopic nthuav lossis ziab thiab brittleness. Cov av noo ntau dhau yuav ua rau cov dej nag, cov teeb meem me me thiab lwm yam teeb meem nyob rau saum npoo ntawm PVC, thaum lub sijhawm qis yuav ua rau PVC qhuav thiab nkig.
Lub Teeb: PVC cov khoom yuav tsum zam kev tshav ntuj ncaj qha, vim tias cov ultraviolet rays nyob rau hauv lub hnub yuav nrawm nws cov txheej txheem, ua rau cov khoom rau discolor thiab ua nkig. Yog li ntawd, nws yuav tsum muab cia rau hauv qhov chaw tsaus los tiv thaiv kev ncaj qha rau lub hnub ci.
Qhov chaw tso pa: pvc cov ntaub ntawv yuav tsum tau muab cia rau hauv qhov chaw muaj pa zoo, ua kom cua ncig, kom tsis txhob ya raws thiab deformation. Kev dim pa tau zoo yuav ua rau cov khoom siv los ua cov ntub thiab pwm, cuam tshuam rau nws lub zog thiab lub neej pabcuam.
Yo dej noo-pov thawj: pvc cov ntaub ntawv yuav tsum muab cia rau hauv ib puag ncig nrog kev ntsuas noo noo-pov thawj. Muab txheej ob-txheej ntim cov hnab ntim khoom lossis cov desiccant tuaj yeem siv los tiv thaiv ya raws los ntawm kev cuam tshuam cov ntaub ntawv.
Khaws deb ntawm qhov kub thiab hluav taws hluav taws: PVC cov khoom yuav tsum tau ceev tseg kom deb ntawm cov khoom kub thiab hluav taws kub kom tiv thaiv kev tua hluav taws lossis cov khoom siv hluav taws xob.
Zam txhob sib cuag nrog cov khoom ntse thiab cov khoom siv muaj zog thiab Alkalis: PVC cov ntaub ntawv yuav tsum zam kom tsis txhob muaj kev sib cuag nrog cov khoom ntse thiab cov alkalis los tiv thaiv kev khawb lossis corrosion.