Cov Nyhuv ntawm CPE Ntxiv rau PVC

1、 Peb yam tseem ceeb uas cuam tshuam rau kev ua tau zoo ntawm CPE
Ua ntej, nws yog hom CPE siv. CPE tau los ntawm cov polyethylene hnyav molecular siab muaj viscosity siab thiab tensile zog, tab sis qhov adhesion ntawm CPE thiab PVC resin no qis. CPE tau los ntawm cov polyethylene hnyav molecular qis muaj viscosity qis thiab tensile zog, thiab CPE tau los ntawm cov polyethylene ntom siab muaj kev tiv thaiv cua sov zoo.
Qhov thib ob, nws yog qhov loj ntawm cov khoom siv raw. Thaum cov khoom me me dhau, nws yooj yim los ua jelly lossis clumpy CPE, thiab thaum cov khoom loj dhau, kev faib tawm ntawm chlorine tsis sib npaug.
Ib zaug ntxiv, nws yog qib ntawm CPE chlorination. Thaum cov ntsiab lus chlorine qis dua 25%, nws tsis sib haum nrog PVC thiab tsis tuaj yeem siv ua tus hloov kho; Thaum cov ntsiab lus chlorine ntau dua 40%, nws muaj kev sib haum zoo nrog PVC thiab tuaj yeem siv ua cov khoom yas, tsis haum ua tus hloov kho cuam tshuam; CPE nrog cov ntsiab lus chlorine ntawm 36-38% muaj elasticity zoo thiab sib haum nrog PVC, ua rau nws siv dav ua tus hloov kho cuam tshuam rau PVC. Tam sim no, CPE nrog cov ntsiab lus chlorine ntawm 35% feem ntau siv. CPE nrog cov ntsiab lus chlorine ntawm kwv yees li 35% muaj qhov kub hloov pauv crystallinity thiab iav qis, roj hmab elasticity zoo, thiab sib haum xeeb nrog PVC. Nws yog siv dav ua tus hloov kho cuam tshuam rau cov khoom tawv PVC.
2, Cov Nyhuv ntawm CPE Ntxiv rau PVC
Thaum qhov ntxiv tsawg dua 10 feeb, lub zog cuam tshuam ntawm PVC nce sai nrog rau kev ntxiv CPE, tab sis kev ntxiv CPE ntxiv ua rau muaj kev txhim kho me ntsis hauv lub zog cuam tshuam ntawm PVC. Yog li ntawd, ua tus neeg sawv cev tiv taus kev cuam tshuam, qhov tsim nyog ntawm CPE yuav tsum tau ntxiv yog 8-10 qhov. Thaum CPE nce, lub zog tensile ntawm PVC sib xyaw txuas ntxiv mus txo qis, thaum lub sijhawm ntev ntawm kev tawg nce ntxiv. Yog tias qhov tawv yog qhia ua cov khoom ntawm lub zog tensile thiab kev ntev ntawm kev tawg, nws yog qhov tseeb tias qhov tawv ntawm PVC yuav nce ntxiv nrog rau kev nce ntawm CPE ntxiv.