PVC Membrane Lifespan

Lub neej ntev ntawm PVC membrane cov qauv yog cuam tshuam los ntawm ntau yam. Hais txog cov ntaub ntawv, cov tshuaj chlorine atoms hauv PVC molecular saw tau yooj yim cuam tshuam los ntawm ultraviolet lub teeb, oxygen, thiab kub kub, ua rau degradation tshua (dehydrochlorination), ua rau brittleness, discoloration, thiab txo tensile zog. Txawm tias muaj kev sib ntxiv ntawm cov stabilizers thiab ultraviolet absorbers, kev laus tsuas tuaj yeem ncua sijhawm. Plasticizer tsiv teb tsaws yog qhov teeb meem tseem ceeb. PVC daim nyias nyias yuav tsum tau ntxiv cov yas yas (xws li DOP) kom tswj tau yooj yim, tab sis tom qab siv ntev -, cov yas txav mus rau saum npoo, ua rau daim nyias nyias ua nplaum, nyiam cov plua plav, thiab ua rau kev laus ntxiv. Hais txog ib puag ncig rhiab heev, lub teeb ultraviolet (lub neej luv luv rau 5-8 xyoo nyob rau hauv cov cheeb tsam uas muaj zog ultraviolet hluav taws xob), muaj kuab paug (xws li plua plav thiab microbial loj hlob), thiab qhov kub thiab txias (qhov kub siab ceev plasticizer volatilization thiab PVC degradation, thaum kub qis ua rau embrittlement) tag nrho lub neej luv luv. Cov piv txwv tiag tiag hauv ntiaj teb qhia tau hais tias kev ua neej nyob ntawm cov khoom siv PVC zoo tib yam hauv thaj chaw muaj kuab paug tsawg yog feem ntau nyob ib puag ncig 10 xyoo.