Cov khoom siv PP tuaj yeem tuav cov dej kub npau npau. Cov khoom siv no muaj qhov ua kom sov zoo, thiab cov khoom tsim los ntawm nws tuaj yeem ua kom tsis muaj menyuam thiab tua kab mob ntawm qhov kub siab tshaj 100 degree.
Thaum tsis muaj lwm lub zog, PP cov khoom yuav tsis deform ntawm qhov kub txog li 150 degree. Nws embrittlement kub yog kwv yees li -35 degree; Qhov kub hauv qab no yuav ua rau cov khoom ua rau nkig, qhia tias nws qhov kev tiv thaiv txias yog qis dua ntawm polyethylene. Lub melting point ntawm PP feem ntau poob ntawm 164℃thiab 170 degree, thaum lub isotactic PP tuaj yeem ncav cuag siab li 176 degree. Yog li ntawd, siv cov ntim khoom ua los ntawm cov khoom siv PP los tuav cov dej kub npau npau tsis muaj teeb meem.
Thaum siv PP yas ntim rau boiling dej -muab hais tias cov txheej txheem kub thaum lub sij hawm tsim khoom feem ntau yog li ntawm 180℃mus rau 240℃- dej boiling yuav tsis ua rau cov khoom mus decompose, thiab nws cov tshuaj muaj pes tsawg leeg nyob ruaj khov. Txawm li cas los xij, rau kev haus dej txhua hnub-tshwj xeeb tshaj yog thaum haus dej kub npau npau- nws raug nquahu kom xaiv cov stainless hlau insulated mugs, khob khob, lossis khob ceramic, vim tias cov ntaub ntawv no muaj txiaj ntsig zoo rau kev noj qab haus huv.
