CPE
CPE
Chlorinated polyethylene CPE yog cov khoom siv polymer npaj los ntawm high density polyethylene (HDPE) los ntawm chlorination hloov cov tshuaj tiv thaiv. Raws li cov qauv sib txawv thiab kev siv, chlorinated polyethylene tuaj yeem muab faib ua resin chlorinated polyethylene (CPE) thiab elastic chlorinated polyethylene (CM). Ntxiv rau kev siv ib leeg, cov khoom siv thermoplastic kuj tuaj yeem sib xyaw nrog polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polystyrene (PS), ABS thiab txawm tias polyurethane (PU). Hauv kev lag luam roj hmab, CPE tuaj yeem siv los ua cov roj hmab tshwj xeeb nrog kev ua haujlwm siab thiab zoo, thiab tuaj yeem sib xyaw nrog ethylene propylene roj hmab (EPR), butyl roj hmab (IIR), nitrile roj hmab (NBR), chlorosulfonated polyethylene (CSM) thiab lwm yam roj hmab.
CPE muaj ob lub zog ntawm cov yas thiab roj hmab thiab muaj kev sib raug zoo nrog lwm cov yas thiab roj hmab. Yog li ntawd, tsuas yog qee qhov siv los ua cov ntaub ntawv tseem ceeb, CPE feem ntau yog siv ua ke nrog roj hmab lossis yas. Thaum CPE thiab yas siv ua ke, nws yog siv los hloov kho. Nws lub hom phiaj tseem ceeb yog siv los ua kev hloov pauv ntawm UPVC cov khoom los txhim kho qhov cuam tshuam thiab kev ua haujlwm kub ntawm UPVC Thaum siv cov roj hmab, CPE feem ntau txhim kho cov nplaim hluav taws xob, rwb thaiv tsev thiab kev laus ntawm cov roj hmab. Raws li kev siv sib txawv, cov khoom tseem ceeb suav nrog CPE135A, CPE135B thiab ACM cuam tshuam hloov pauv.
CPE 135Ayog ib qho qauv ntawm chlorinated polyethylene. Thawj tus lej 1 sawv cev tias qhov seem crystallinity (TAC) yog 0-10 feem pua, tus lej thib ob thiab tus lej thib peb 35 sawv cev tias cov ntsiab lus chlorine yog 35 feem pua, thiab tus lej kawg yog sawv cev rau qhov hnyav molecular ntawm PE. Raws li PVC cuam tshuam kev hloov pauv, CPE135A muaj ntau yam zoo, xws li tus nqi qis, kev ua haujlwm zoo thiab kev laus ua haujlwm zoo. Txawm li cas los xij, muaj qee qhov tsis zoo hauv kev siv CPE135A rau cov khoom uas muaj kev cuam tshuam zoo, siab hardness thiab kub tsis kam. Chlorinated polyethylene CPE135A yog siv rau kev hloov kho yas. Nws yog npaj los ntawm chlorination ntawm tshwj xeeb polyethylene nyob rau hauv qhov kev txiav txim ntawm chlorine atoms. Nws muaj cov khoom zoo ntawm lub cev, xws li siab toughness ntawm qhov kub thiab txias; Siab tensile zog; Nws yog qhov ze heev rau qhov tsis muaj solubility ntawm PVC thiab muaj kev sib raug zoo zoo; Muab cov txheej txheem ua haujlwm raug, lub network qauv tsim nyob rau hauv cov khoom siv tawv PVC, yog li muab cov khoom lag luam zoo ib txwm muaj thiab tsis tshua muaj kub toughness thiab cuam tshuam lub zog.
CPE 135Byog npaj los ntawm chlorination ntawm tshwj xeeb polyethylene nyob rau hauv qhov kev txiav txim ntawm chlorine atoms. Nws yog saturated thermoplastic nrog random qauv thiab yuav luag tsis muaj crystallization. Nws muaj tsawg plasticizing kub thiab Mooney viscosity thiab kev ua haujlwm zoo heev. Nws tuaj yeem sib xyaw nrog cov roj hmab ntuj thiab cov roj hmab hluavtaws hauv txhua qhov kev faib ua feem, uas muab lub qhov ncauj zoo heev rau huab cua tiv thaiv thiab nplaim hluav taws. Nws yog tsuas yog siv rau tshwj xeeb hluavtaws roj hmab thiab kuj yuav siv tau raws li kev hloov kho thiab solubilizer ntawm dav hluavtaws roj hmab.
ACM Impact Modifieryog ib copolymer ntawm me ntsis chlorinated HDPE thiab acrylate. Nws kov yeej qhov tsis muaj zog ntawm cov iav siab hloov pauv qhov kub thiab qhov tsis zoo ntawm CPE, thiab muaj qhov cuam tshuam rau kev hloov pauv ntawm qhov kub thiab txias. Txoj kev siv ACM yog tib yam li CPE. Thaum siv, extruder tam sim no thiab torque yuav txo me ntsis. Tus nqi ntawm cov roj nplua nyeem sab nraud yuav tsum raug txo kom txog thaum tam sim no thiab lub zog ntawm ACM zoo ib yam lossis siab dua me ntsis ntawm CPE. Qhov ntsuas kub tsis tshua muaj zog ntawm ACM cuam tshuam kev hloov pauv yog siab dua li ntawm CPE ib txwm muaj, qhov elongation ntawm kev so kuj siab dua CPE, thiab Vicat softening point yog qis dua CPE. Yog li ntawd, cov khoom siv PVC hloov nrog ACM cuam tshuam kev hloov pauv tsis yog tsuas yog muaj qhov zoo ntawm qhov kub thiab txias, tab sis kuj muaj qhov zoo ntawm chav sov toughness, thermal stability thiab UV tsis kam.