Kingflex nbr / pvc roj av rwb thaiv tsev rwb thaiv tsev yog dav siv nyob rau hauv ntau yam kev lag luam vim lawv rwb thaiv tsev cov cua sov thiab lub suab rwb thaiv tsev. Ib qho kev txhawj xeeb loj tshaj plaws rau cov neeg siv khoom thiab kev lag luam yog tias cov khoom no yog CFC-dawb. Chlorofluorocarbons (CFCS) paub tias muaj kev cuam tshuam tsis zoo nyob rau ib puag ncig, tshwj xeeb los ntawm kev tawm ntawm lub ozone txheej. Raws li qhov tshwm sim, kev siv CFCS hauv ntau qhov kev lag luam yog nruj me ntsis tswj hwm thiab phased tawm.
Hmoov zoo, feem ntau ntawm cov plaub / roj hmab ua npuas ncauj rwb thaiv tsev cov khoom lag luam tsis muaj CFCs. Cov tuam txhab tsim tau lees paub qhov tseem ceeb ntawm kev tsim cov ntaub ntawv rwb thaiv tsev uas yog tus phooj ywg ib puag ncig thiab muaj kev ruaj ntseg. Los ntawm kev tshem tawm CFCs los ntawm lawv cov khoom, lawv tsis tsuas yog ntsib cov kev cai tswj kev cai tab sis tseem ua rau muaj kev tiv thaiv thoob ntiaj teb.
Kev hloov mus rau CFC-dawb NPB / PVC roj hmab ua npuas ncauj rwb thaiv tsev yog cov kauj ruam tseem ceeb rau kev lag luam. Nws tso cai rau cov lag luam thiab cov neeg siv khoom siv cov khoom lag luam no nrog kev ntseeg siab tias lawv yuav tsis ua kom muaj kev phom sij ib puag ncig. Ib qho ntxiv, kev tiv thaiv (CFC-dawb pub dawb yog qhov kev xaiv thib ib rau cov phiaj xwm tsim tsev ntsuab thiab ib puag ncig cov neeg siv khoom.
Ntxiv rau kev ua CFC-dawb, NPR / PVC roj hmab ua npuas ncauj rwb thaiv tsev muaj ntau cov txiaj ntsig. Nws muab cov khoom siv hluav taws xob zoo tshaj plaws ua kom muaj zog, pab txo kom muaj zog noj thiab txo cov nqi cua sov thiab cua txias. Cov khoom siv yog lub teeb yuag, hloov tau thiab yooj yim rau nruab, ua rau nws xaiv nrov rau ntau cov ntawv thov.
Ib qho ntxiv, NBR / PVC roj hmab ua npuas ncauj yog tiv taus ya raws, tshuaj lom neeg thiab UV hluav taws xob, ua kom muaj txiaj ntsig nyob hauv ntau qhov chaw ib puag ncig. Nws cov suab-nqus cov khoom ua rau nws zoo tagnrho rau cov suab nrov tswj hauv tsev thiab tshuab.
Hauv cov ntsiab lus, feem ntau NPR / PVC roj hmab ua npuas ncauj rwb thaiv tsev cov khoom yog CFC-dawb, hauv kab nrog ntiaj teb kev siv zog los tiv thaiv ib puag ncig. Qhov no ua rau lawv muaj lub luag haujlwm thiab kev xaiv kom ruaj khov rau cov rwb thaiv tsev xav tau kev lag luam sib txawv. Nrog rau cov khoom muaj rwb thaiv tsev zoo thiab ib puag ncig ib puag ncig nas
Lub Sijhawm Post: Jul-15-2024
