PVC Polyvinyl Chloride
Aug 06, 2022
Polyvinyl chloride muaj qhov tsis zoo rau lub teeb thiab cua sov. Nws yuav decompose los tsim hydrogen chloride ntawm qhov kub siab tshaj 100 degree los yog raug tshav ntuj rau lub sij hawm ntev, thiab ntxiv autocatalytic decomposition yuav ua rau discoloration thiab poob ntawm txhua yam khoom. Nyob rau hauv kev siv tswv yim, stabilizers yuav tsum tau ntxiv los txhim kho rau thermal thiab lub teeb stability, kev xaiv ntawm stabilizer yog tus yuam sij rau nws zoo thiab kev nyab xeeb.
Qhov sib txawv ntawm cov mos mos thiab tawv PVC yog qhov muaj lossis tsis muaj plasticizers. Mos PVC muaj cov yas yas. Nws feem ntau yog siv rau hauv pem teb, qab nthab thiab saum npoo ntawm tawv, thiab muaj cov khoom tsis zoo ntawm lub cev thiab cov khoom siv kho tshuab.
Rigid polyvinyl chloride (PVC-U) tsis muaj plasticizer ntxiv thiab feem ntau yog siv los ua cov kav dej. Cov khoom siv dav tshaj plaws yog cov kav dej thiab cov kav dej hluav taws xob. Cov kav dej ntawm PVC-U feem ntau tsis txuas nrog kub yaj, tab sis txuas nrog cov nplaum.
Cov saum toj no qhia txog qee cov yas siv los ua cov kav dej. Ntxiv rau cov ntaub ntawv saum toj no, muaj lwm cov ntaub ntawv, tab sis lawv tsis tau siv dav. Qhov tseem ceeb tshaj plaws yog cov khoom siv saum toj no.
