Qhov ntsuas kub ntawm HDPE kav dej yog -60 degree ~ 40 degree, tsis muaj kev tiv thaiv tshwj xeeb yuav tsum tau ua thaum lub caij ntuj no, thiab cov kav dej yuav tsis nkig.
Qhov ntsuas kub tsis tshua muaj kev cuam tshuam ntawm PE yeeb nkab yog qhov zoo heev. Qhov kub-kub embrittlement kub ntawm polyethylene yog qhov tsawg heev, thiab nws tuaj yeem siv tau zoo nyob rau hauv qhov kub ntawm -60-60 degree . Thaum lub sij hawm tsim kho nyob rau hauv lub caij ntuj no, vim hais tias cov khoom muaj kev cuam tshuam zoo, cov yeeb nkab yuav tsis puas. Txhaum.
Cov yam ntxwv ntawm HDPE kav:
Cov kav dej HDPE yuav tsum tiv taus qee qhov siab, thiab PE resins nrog qhov hnyav molecular thiab cov khoom siv zoo, xws li HDPE resins, feem ntau yog xaiv. LDPE resin muaj lub zog tensile tsawg, tsis zoo siab tsis kam, tsis zoo rigidity, tsis muaj qhov ruaj khov thaum lub sij hawm molding, thiab kev sib txuas tsis yooj yim, yog li nws 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 rau txheej txheem, yog li muaj ntau yam xaiv rau lawv melt index, feem ntau MI yog nyob nruab nrab ntawm 0.3-3g/10min.
