Qhov ntom ntawm PE roj yeeb nkab yog qhov ntsuas tseem ceeb heev ntawm kev siv. Feem ntau, thaum mus yuav cov yeeb nkab, nws qhov ntom ntom ntom yuav raug tshuaj xyuas. Tsuas yog cov kav dej uas ua tau raws li qhov ua kom muaj qhov ua tau muaj kev ua tau zoo heev. Cov kev paub tsuas muaj qee qib ntawm kev nkag siab, yog li qhia nws qhov ntom ntom rau koj.
1. Ib qho khoom siv tseem ceeb ntawm PE Roj Roj Yeeb, xws li 1-butene, 1-hos, kuj feem ntau siv los txhim kho polymer kev ua tau zoo. Rau HDPE, cov ntsiab lus ntawm cov lus Monomers saum toj no feem ntau tsis ntau tshaj li 1% -2%.
2. Qhov sib ntxiv ntawm comonomer me ntsis txo cov crystallinity ntawm cov polymer. Qhov kev hloov no feem ntau ntsuas los ntawm qhov ntom ntom, uas muaj txoj kev sib raug zoo nrog crystallinity.
3. Cov kev faib tawm dav dav ntawm Tebchaws Meskas yog Astm D1248, thiab qhov ceev ntawm HDPE yog saum 0.940g / .c. Nruab Nrab -} ceev polyethylene (MDPE) muaj qhov chaw ntom ntom ntawm 0.926 ~ 0.940g / cc. Lwm yam kev faib tawm qee zaum cais MDPE li HDPE lossis LLDPE.
4. Homopolers muaj qhov siab ntom ntom ntom, muaj kev lom zem zoo, zoo nkauj, tab sis feem ntau muaj kev ntxhov siab ib puag ncig kev ntxhov siab (escr).
5. Esc yog lub peev xwm ntawm PE roj yeeb nkab tiv thaiv kev tawg los ntawm kev siv tshuab lossis kev ntxhov siab.
(1) Qiv ntau dua feem ntau txhim kho cov mecha tshuab lub zog, xws li lub zog tensile, txhav, thiab lub hardness.
(2) Cov khoom cua sov xws li softening taw tes kub thiab kub distortion kub.
(3) anti {{{-}}} kev permeability, xws li huab cua permeability lossis dej vapor permeability.
