Calcium zinc stabilizer yog cov khoom siv cua sov uas tsis muaj tshuaj lom uas tsim los ntawm cov txheej txheem sib xyaw tshwj xeeb, feem ntau yog cov ntsev calcium, ntsev zinc, cov roj nplua nyeem, cov tshuaj antioxidants, thiab lwm yam. Nws yog cov khoom siv polymer thermosensitive, xws li PVC CPVC, Ib qho ntawm cov khoom ntxiv tseem ceeb rau chloroprene roj hmab, siv los tiv thaiv lossis ncua nws qhov kev puas tsuaj thermal.
Mechanism ntawm kev ua haujlwm ntawm calcium zinc stabilizer
1. Nws tuaj yeem hloov cov pab pawg nquag hauv cov saw polymer (xws li cov chlorine atoms ntawm qhov chaw allyl hauv PVC) kom tau txais cov polymers ruaj khov dua, yog li tshem tawm qhov chaw ntawm dehydrochlorination hauv cov ntaub ntawv polymer thiab txo qhov ua tau ntawm kev ua rau muaj kev cuam tshuam dehydrochlorination.
2. Tuaj yeem ntes tau cov hydrogen chloride uas raug rho tawm sai sai thiab tiv thaiv nws cov nyhuv autocatalytic
Yog li ntawd, lub luag haujlwm ntawm polyethylene wax hauv calcium zinc stabilizers yog dab tsi? Hauv kev ua thiab tsim ntau yam khoom mos thiab tawv PVC, tsis yog tsuas yog xav tau cov cua sov stabilizers tab sis kuj xav tau cov roj nplua nyeem. Calcium muaj lubricity tsis zoo, yog li yuav tsum ntxiv cov tshuaj ntxiv wax kom txhim kho cov nyhuv lubrication ntawm cov khoom.
Kev txhim kho kev ua tau zoo ntawm calcium zinc stabilizer los ntawm oxidized polyethylene wax yog raws li nram no:
1. Cov tshuaj polyethylene oxidized muaj cov pab pawg ua haujlwm xws li cov pab pawg hydroxyl, uas tuaj yeem txhim kho qhov ruaj khov ntawm Ca / Zn stabilizers
2. Txhim kho kev sib raug zoo nrog PVC, txo cov frosting, thiab txhim kho kev luam ntawv thiab cov khoom siv kaw cua sov
3. Txhawb kev ua kom yas thiab txhim kho kev ntws ntawm cov ntaub ntawv PVC
4. Cov nyhuv zoo heev ua rau cov khoom siv dov, extrusion, txhaj tshuaj, thiab tshuab molding muaj cov khoom zoo rau kev rhuav tshem cov hlau.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-21-2024
