Lub npe Askiv "High Density Polyethylene", hu ua "HDPE".
HDPE yeeb nkab yog cov khoom siv hloov khoom ntawm cov yeeb nkab ib txwm siv thiab PVC cov kav dej haus.
Cov kav dej HDPE yuav tsum tiv taus qee qhov siab, thiab PE resins nrog qhov hnyav molecular thiab cov khoom siv zoo dua qub, xws li HDPE resins, feem ntau yog xaiv. LDPE resin muaj lub zog tensile uas tsis tshua muaj zog, tsis kam mus rau qhov sib txawv siab, tsis zoo rigidity, tsis muaj qhov ruaj khov thaum lub sij hawm molding thiab kev sib txuas nyuaj, thiab tsis haum rau cov kav dej siab. Txawm li cas los xij, vim nws qhov ntsuas kev nyab xeeb siab, LDPE, tshwj xeeb tshaj yog LLDPE resin, tau dhau los ua cov khoom siv rau kev tsim cov kav dej haus. LDPE thiab LLDPE resins muaj tsawg yaj viscosity, zoo fluidity thiab yooj yim ua, yog li qhov kev xaiv ntau yam ntawm lawv melt index kuj dav, feem ntau MI yog nyob nruab nrab ntawm 0.3-3g/10min.