PVC ndi chiyani

PVC ndi polyvinyl kolorayidi, amene ndi polima polymerized ndi vinilu kolorayidi monoma pansi zochita za peroxide, mankhwala azo mankhwala ndi intiators ena, kapena pansi pa zochita za kuwala ndi kutentha molingana ndi ufulu kwakukulu ma polymerization limagwirira.PVC ndi imodzi mwa mapulasitiki akuluakulu padziko lonse lapansi, omwe amagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana.

Kodi PVC ndi chiyani?PVC ndi zinthu zofala kwambiri m'moyo.Kodi PVC ndi chiyani?Tiyeni tione lero.[lingaliro la PVC] PVC kwenikweni polyvinyl kolorayidi, amene ndi polima polymerized ndi vinilu kolorayidi monoma ndi peroxide, azo pawiri ndi intiators ena, kapena pansi pa zochita za kuwala ndi kutentha malinga ndi ufulu ankafuna kwambiri polymerization limagwirira. .

[Makhalidwe a PVC]: PVC ndi ufa woyera ndi dongosolo amorphous, ndi galasi kusintha kutentha ndi 77 ~ 90 ℃.Kusintha kwa galasi ndi lingaliro lovuta kwambiri.Kwa ufa wa PVC, kusintha kwa galasi ndikuti mkati mwa kutentha uku, PVC idzasintha kuchoka ku ufa woyera kupita ku galasi.PVC yagalasi idzayamba kuwola pafupifupi 170 ℃.Kusakhazikika kwa kuwala ndi kutentha, kosavuta kuwola ndikupanga hydrogen chloride.
[Kuwonongeka kwa PVC].Kuchokera pamakhalidwe a PVC, titha kuwona kuti PVC siingagwiritsidwe ntchito yokha.Pochita ntchito, ma stabilizer ayenera kuwonjezeredwa kuti apititse patsogolo kutentha ndi kuwala.Tiyenera kupereka chidwi chapadera apa.Mu 2017, mndandanda wama carcinogens omwe adasindikizidwa ndi bungwe lapadziko lonse lapansi lofufuza za khansa ya World Health Organisation adasanjidwa koyambirira kuti afotokozedwe, ndipo PVC idaphatikizidwa pamndandanda wamitundu itatu ya khansa.Choncho, m'moyo watsiku ndi tsiku, yesetsani kuti musagwiritse ntchito zida za PVC kuti musunge chakudya, osasiya madzi otentha.

[PVC], monga imodzi mwa mapulasitiki akuluakulu padziko lonse lapansi, PVC imagwiritsidwa ntchito kwambiri muzomangamanga, zinthu zamafakitale, zofunikira zatsiku ndi tsiku, zikopa zapansi, matailosi apansi, zikopa zopangira, mapaipi, mawaya ndi zingwe, ma CD mafilimu, mabotolo. , zopangira thovu, zosindikizira, fiber dimension, etc.