PolypropylenevsPVC
Polypropylene (PP) yog ib qho ntawm cov yas nruab nrab uas tsuas muaj ob lub ntsiab lus: carbon (C) thiab hydrogen (H).
Polypropylene (PP) yog dab tsi?
PVC yog dab tsi?
Polypropylene (PP)
yog ib qho ntawm cov khoom nruab nrab feem ntau muaj ob lub ntsiab lus: carbon (C) thiab hydrogen (H).
PVC (polyvinyl chloride) yas, feem ntau hu ua vinyl, yog ib qho ntawm cov neeg siv khoom txaus ntshai tshaj plaws uas tau tsim.
PRODUCTION
Qhov tseem ceeb, kev tsim cov khoom siv feem ntau ua rau lub nra hnyav tshaj plaws. PP daim ntawv yog tsim los ntawm propylene monomer, ib tug kuj muaj kev nyab xeeb roj uas yog pov tseg los ntawm cov khoom ntawm cov roj av kev lag luam. Nws tau siv los hlawv tawm rau hauv qhov chaw, ua rau lub tsev cog khoom roj emissions.Yog li ntawd, siv PP ntau dua hauv cov khoom yuav pab txo qis cov pa hluav taws xob hauv tsev cog khoom. PP yog tsim los ntawm cov pa roj carbon thiab hydrogen thiab yog tsim tsis muaj kev phom sij emissions.
PVC yog tsim los nrog kev sib ntxiv ntawm ntau cov tshuaj lom neeg ntxiv, uas tuaj yeem ua rau cov khoom siv PVC nws tus kheej tsim kev puas tsuaj rau cov neeg siv khoom. Cov tshuaj no tuaj yeem evaporate lossis tawm ntawm PVC, ua rau ib puag ncig thiab tsis muaj kev phom sij rau cov neeg siv khoom.
RECYCLE
PP yog 100% recyclable. Thaum lub sij hawm rov ua dua, PP khaws nws lub zog thiab tsis tas yuav 'down cycled' rau hauv cov khoom uas muaj zog tsawg xws li paj lauj kaub. Tsis tsuas yog cov khoom siv PVC nyuaj heev rau kev rov ua dua tshiab, lawv muaj tshuaj lom ntau dua hauv kev tsim khoom, siv thiab pov tseg ntau dua li PP thiab vim li ntawd, ntau lub zej zog thiab kev lag luam tau txiav tawm lawv siv. Thaum muab pov tseg rau hauv qhov chaw pov tseg, PVC ua rau muaj kev phom sij rau ib puag ncig ntev vim tias cov tshuaj ntxiv tuaj yeem nkag mus rau hauv av. PVC tsis tuaj yeem siv tau zoo vim muaj ntau yam tshuaj lom neeg siv los ua kom tawv nqaij lossis ruaj khov PVC, uas tuaj yeem ua rau cov khoom siv rov ua dua tshiab.
Qhov tseeb, tsuas yog ib lub raj mis PVC tuaj yeem ua rau cov khoom siv rov ua dua tshiab ntawm 100, 000 PET fwj!
LIFE CYCLE
PVC tag nrho lub neej voj voog, los ntawm kev tsim khoom los ntawm kev siv thiab pov tseg, muaj kev cuam tshuam tsis zoo rau tib neeg kev noj qab haus huv thiab peb ib puag ncig. Tsis tsuas yog PVC inherently txaus ntshai nyob rau hauv nws daim ntawv yooj yim, tab sis nws kuj xav tau ib tug loj npaum li cas ntawm hnyav hlau xws li lead ua rau nws ruaj khov. Lead yog cov tshuaj lom heev nyob rau hauv lub neej voj voog ntawm cov khoom thiab tom qab nws muab pov tseg. Tsis muaj txhuas lossis lwm yam hlau hnyav siv hauv kev tsim cov ntawv Promeg PP. Ib qho teeb meem ntxiv nrog PVC yooj ywm yog qhov yooj thiab softness yuav tsum tau induced los ntawm kev ntxiv ntawm ib tug loj npaum li cas ntawm plasticiser, feem ntau phthalates, nyob rau hauv concentrations ntawm 30-50%. Cov phthalates no yuav muaj cov khoom carcinogenic hauv tib neeg. Lawv ua qhov no los ntawm kev ua cov poj niam cov tshuaj hormone estrogen, ua rau muaj kev tsis sib haum xeeb hauv tib neeg thiab lwm hom tsiaj. Cov plasticisers no yog mobile los ntawm xwm thiab li no tsiv teb tsaws.