Dab tsi yog qhov stabilizer hauv cov qauv ntawm PVC ntug banding?

(1) Lub thermal stabilizer yuav tsum tuaj yeem ntes cov autocatalytic HCl tso tawm los ntawm PVC ntug banding resin, los yog hnov ​​​​mob nrog cov qauv polyolefin tsis ruaj khov uas tsim los ntawm PVC resin los tiv thaiv lossis txo qhov decomposition ntawm PVC resin. Feem ntau, cov khoom, functionality thiab cov khoom yuav tsum tau ntawm lub tshav kub stabilizer xaiv nyob rau hauv lub formulation yuav tsum tau txiav txim siab.

Barium cadmium stabilizer yog lub tshav kub stabilizer nrog kev ua tau zoo heev. Siv dav hauv PVC zaj duab xis ua liaj ua teb. Nws feem ntau ua ke nrog barium, cadmium, zinc, organophosphites thiab antioxidants.

Calcium zinc stabilizer tuaj yeem siv los ua cov stabilizer uas tsis muaj tshuaj lom nyob rau hauv cov khoom ntim khoom noj, cov khoom siv kho mob thiab cov tshuaj ntim tshuaj, tab sis nws qhov kev ruaj ntseg yog tsawg. Thaum cov calcium stabilizer siv ntau ntau, cov pob tshab tsis zoo thiab nws yooj yim tawg. Calcium zinc stabilizers feem ntau siv polyols thiab antioxidants los txhim kho lawv cov khoom. Hauv xyoo tas los no, calcium-zinc composite stabilizers rau cov kav dej nyuaj tau tshwm sim hauv kuv lub tebchaws.

Organotin tshav kub stabilizer muaj kev ua tau zoo heev thiab yog ib qho zoo heev rau cov khoom siv tawv PVC thiab cov khoom pob tshab. Tshwj xeeb, octyltin yuav luag dhau los ua ib qho tseem ceeb stabilizer rau cov khoom ntim tsis muaj tshuaj lom thiab PVC ntug banding, tab sis nws kim heev.

Epoxy stabilizers feem ntau yog siv los ua cov stabilizers thib ob. Thaum zoo li no stabilizer siv ua ke nrog barium cadmium calcium zinc stabilizer, nws tuaj yeem txhim kho lub teeb thiab thermal stability. Qhov tsis zoo yog tias nws yooj yim los ntshav tawm. Polyols thiab organophosphites tuaj yeem siv los ua cov stabilizers thib ob

Nyob rau hauv xyoo tas los no, tsis tshua muaj lub ntiaj teb stabilizers thiab hydrotalcite stabilizers kuj tau tshwm sim ib zaug. Lub ntsiab feature ntawm lub ntiaj teb tsis tshua muaj stabilizers yog cov khoom ua tau zoo, thaum hydrotalcite yog cov tsis muaj tshuaj lom stabilizer.

(2) Thaum lub sij hawm ua thiab siv cov khoom siv antioxidant PVC, oxidation tshwm sim vim qhov kev ua ntawm tshav kub thiab ultraviolet lub teeb, thiab nws oxidative degradation muaj feem xyuam rau tiam ntawm dawb radicals. Lub ntsiab antioxidants yog saw scission terminators los yog dawb radical scavengers. Nws lub luag haujlwm tseem ceeb yog ua ke nrog cov dawb radicals los tsim cov tebchaw ruaj khov thiab tshem tawm cov kev cuam tshuam ntawm cov saw hlau. Lub ntsiab antioxidant ntawm PVC ntug banding feem ntau yog bisphenol A. Kuj tseem muaj cov tshuaj tiv thaiv antioxidants lossis hydrogen peroxide decomposers. PVC auxiliary antioxidants yog triphenyl phosphite thiab benzene diisooctyl phosphite. Kev sib xyaw ua ke ntawm thawj thiab theem nrab antioxidants tuaj yeem ua haujlwm sib koom ua ke.