Polyvinyl chloride yog ib qho ntawm cov khoom yas muaj txiaj ntsig tshaj plaws hauv ntiaj teb. Polyvinyl chloride yog cov hmoov dawb nrog cov qauv amorphous, me me branching degree thiab tsis zoo photothermal stability. Vim tias qhov kev ua haujlwm tsis zoo ntawm PVC, cov txheej txheem melting nce mus txog 160 ° C, thaum qhov kub nce mus txog 140 ° C, polyvinyl chloride tsob ntoo decomposition rog yuav tsum tau ua tiav thiab tsim los ntawm kev hloov kho kom tiav cov yaj. Ntawm no yog yuav ua li cas siv PVC additives los ua kom tiav kev hloov kho PVC.
Tam sim no, muaj ob txoj hauv kev hloov pauv tseem ceeb: ib qho yog ntxiv cov khoom siv hluav taws xob rau cov resin kom nce qhov kub thiab txias ntawm PVC; Qhov thib ob yog ntxiv cov nplaum nplaum rau cov resin kom txo cov melting kub ntawm PVC.
1, PVC auxiliaries - hom kub stabilizer muab faib ua plaub pawg: ① lead-acid, ② organotin, ③ hlau xab npum, ④ tsis tshua muaj ntiaj teb.
Cov nyhuv ntawm lead-acid yog qhov zoo thiab ntau, tab sis tsis haum rau cov khoom tsis muaj tshuaj lom thiab pob tshab; Nrog rau kev txhim kho cov kev cai tsis muaj txhuas thiab kev ua raws li RoHS cov qauv hauv xyoo tas los no, cov hmoov lead ntsev thickeners tau maj mam thim tawm ntawm kev ua lag luam.
Organotin muaj kev ruaj ntseg zoo, haum rau cov khoom pob tshab, thiab muaj cov yam ntxwv tsis muaj tshuaj lom; Tab sis nws kim heev.
Cov nyhuv stabilizing ntawm cov xab npum hlau feem ntau yog pob tshab, muaj kev phom sij lossis tsis muaj tshuaj lom, thiab tsis tshua siv ib leeg. Feem ntau yog siv rau cov ntawv sib xyaw, feem ntau yog rau cov khoom muag muag; Cov nyhuv stability ntawm calcium / zinc composite stabilizer txuas ntxiv txhim kho, thiab cov nyiaj kuj nce ntxiv, uas yog tsim rau cov hlau thiab cable, profiles, yeeb nkab fittings, thiab lwm yam. Lub ntiaj teb tsis tshua muaj thickener yog ntau yam tshiab, uas yog pob tshab thiab tsis- tshuaj lom, tab sis nws cov kev tiv thaiv ib puag ncig tau raug nug.