1, Peb yam tseem ceeb cuam tshuam rau CPE kev ua tau zoo
Ua ntej, nws yog hom CPE siv. CPE tau los ntawm qhov hnyav molecular polyethylene muaj viscosity siab thiab tensile lub zog, tab sis qhov adhesion ntawm no CPE thiab PVC resin yog tsawg. CPE tau los ntawm qhov hnyav molecular polyethylene tsis tshua muaj viscosity thiab tensile lub zog, thiab CPE tau los ntawm high-density polyethylene muaj cua sov zoo.
Qhov thib ob, nws yog qhov loj ntawm cov khoom siv raw khoom. Thaum cov particle loj me dhau lawm, nws yooj yim rau tsim jelly los yog clumpy CPE, thiab thaum lub particle loj dhau lawm, kev faib cov tshuaj chlorine tsis sib npaug.
Ib zaug ntxiv, nws yog qib ntawm CPE chlorination. Thaum cov ntsiab lus chlorine qis dua 25%, nws muaj kev sib raug zoo nrog PVC thiab tsis tuaj yeem siv los hloov kho; Thaum cov ntsiab lus chlorine ntau dua 40%, nws muaj kev sib raug zoo nrog PVC thiab tuaj yeem siv los ua cov khoom siv yas, tsis haum rau kev hloov pauv; CPE nrog cov ntsiab lus chlorine ntawm 36-38% muaj qhov elasticity zoo thiab sib haum nrog PVC, ua rau nws siv dav hauv kev hloov pauv rau PVC. Tam sim no, CPE nrog cov ntsiab lus chlorine ntawm 35% feem ntau yog siv. CPE nrog cov ntsiab lus chlorine nyob ib ncig ntawm 35% muaj qhov tsis tshua muaj crystallinity thiab iav hloov kub, zoo roj hmab elasticity, thiab haum haum nrog PVC. Nws yog dav siv los ua kev hloov pauv rau cov khoom siv tawv PVC.
2, Cov nyhuv ntawm CPE Ntxiv rau PVC
Thaum qhov sib ntxiv yog qis dua 10 feeb, qhov cuam tshuam lub zog ntawm PVC nce nrawm nrog qhov sib ntxiv ntawm CPE, tab sis ntxiv cov nyiaj ntxiv ntawm CPE ua rau muaj kev txhim kho me ntsis hauv kev cuam tshuam lub zog ntawm PVC. Yog li, raws li tus neeg sawv cev tiv thaiv, qhov tsim nyog ntawm CPE yuav tsum tau ntxiv yog 8-10 qhov chaw. Raws li CPE nce, lub zog tensile ntawm PVC sib tov txuas ntxiv txo qis, thaum lub elongation ntawm tawg nce. Yog hais tias lub toughness yog qhia raws li cov khoom ntawm tensile lub zog thiab elongation ntawm so, nws yog pom tseeb hais tias lub toughness ntawm PVC yuav ho nce nrog nce ntawm CPE ntxiv.
Post lub sij hawm: Aug-01-2023
