Lub hardness ntawm polyethylene ntawv muaj ntau yam, feem ntau yog nyob ntawm nws hom kev ua lag luam thiab tsim khoom.
Lub hardness ntawm polyethylene ntawv (PE) Ranges kwv yees li 20 txog 90, nyob ntawm nws hom kev lag luam thiab kev tsim khoom. Mos polyethylene muaj qhov qis dua nyuaj, feem ntau ntawm 20 thiab 45 ntug dej hardness (HDPE) muaj lub hardness ntau dua, uas tuaj yeem ncav cuag 90d. Tsis tas li ntawd, lub hardness ntawm cov ntawv polyethylene kuj tseem tuaj yeem hloov kho los ntawm kev ntxiv cov tshuab yas lossis lwm yam kev sib ntxiv kom tau raws li cov cai thov sib txawv.
Lub cev nqaij daim tawv thiab tshuaj ntawm polyethylene ntawv tseem muaj qhov cuam tshuam tseem ceeb ntawm nws lub hardness. High-ceev polyethylene muaj cov cua txias thiab txias tsis kam, muaj zog hluav taws xob, muaj zog hluav taws xob thiab kev ntxhov siab ib puag ncig kev tawg. Cov yam ntxwv no ua cov ntawv Polyethylene ua tau zoo nyob rau ntau yam kev siv, tshwj xeeb yog nyob rau qhov xwm txheej uas muaj zog thiab hnav tsis kam.