Daim Ntawv Thov ntawm Crosslinking Tus Neeg Sawv Cev Taic hauv PVC Kev Lag Luam
1. Txhim kho cov kub tiv-pvc
PVC cov ntaub ntawv muaj feem ntau rau thermal degradation nyob rau hauv ib puag ncig kub, ua rau ib qho kev txo qis hauv cov khoom siv khoom. Los ntawm kev siv cov hmoov nplej hla dej, ruaj khov cov qauv muaj peev xwm ua tau los ntawm PVC molecular chains, li kev txhim kho cov cua sov ua haujlwm ntawm cov khoom. Piv txwv li, peroxide crosslaining cov neeg sawv cev ntawm cov kev kub siab rau cov qauv dawb ntawm PVC molecular chartensions, tsim kev sib haum xeeb ntawm thermal stability ntawm pvc.
2. Txhim kho cov khoom siv tshuab ntawm PVC
Cov khoom siv tshuab ntawm cov ntaub ntawv PVC tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua hauv cov kev thov kom muaj txiaj ntsig zoo, cuam tshuam lub zog, thiab hnav tsis kam. Cov tshuaj txhuam hniav hla tuaj yeem txhim kho cov khoom siv tshuab cov cuab yeej siv ntawm cov ntaub ntawv PVC los ntawm kev sib sau cov qauv sib dhos ntawm lawv cov molecular. Piv txwv li, kom cov neeg ua haujlwm sib txuas ua kom sib luag nrog cov chlorine atoms ntawm pvc molecular charts los tsim ruaj khov kho tshuab zog thiab kav ntev ntawm cov khoom.
3. Txhim kho huab cua tsis kam ntawm PVC
PVC cov ntaub ntawv tau yooj yim cuam tshuam los ntawm ultraviolet hluav taws xob, oxygen, thiab cov av noo thaum siv sab nraud, ua rau cov laus. Cov hmoov av hla dej tuaj yeem txhim kho cov huab cua tsis kam ntawm cov khoom siv PVC los ntawm kev sib sau cov qauv sib dhos ntawm lawv cov molecular. Piv txwv li, mult -} Ua haujlwm Monomer crosslinking cov neeg sawv cev hauv PVC molecular charmints cov qauv ntawm pvc molecular charmors cov qauv ntawm pvc molecular charmors cov qauv ntawm pvc molecular charmors cov qauv ntawm pvc molecular charmors cov qauv ntawm pvc molecular charmors cov qauv ntawm pvc molecular charmors cov qauv ntawm pvc molecular charmors cov qauv ntawm pvc molecular charpors ntawm PVC molecular chartss, txo cov kev laus ntawm cov ntaub ntawv nyob rau sab nraum zoov ib puag ncig.
4. Txhim kho kev ua haujlwm ntawm PVC
PVC cov ntaub ntawv muaj peev xwm nquag muaj teeb meem xws li fluidity tsis zoo thiab ua haujlwm siab kub thaum ua haujlwm. Plamed crosslinking cov neeg sawv cev tuaj yeem txhim kho kev ua haujlwm ntawm cov ntaub ntawv los ntawm kev sib sau cov qauv hla ntawm PVC cov saw hlau sib tw. Piv txwv li, peroxide crosslinking cov neeg sawv cev tuaj yeem tsim cov radicals dawb los ntawm kev ua txhaum hluav taws xob thaum PVC molecular charets, li kev txhim kho cov khoom siv lub fluidity thiab kev ua cov khoom kub.
5. Kev loj hlob ntawm ib puag ncig cov phooj ywg PVC cov ntaub ntawv
Nrog rau kev tiv thaiv ntxiv ntawm kev tiv thaiv ib puag ncig, kev loj hlob ntawm ib puag ncig cov ntawv PVC tau dhau los ua kev lag luam. Hmoov seem cross kuj tuaj yeem txhim kho kev ua yeeb yam ib puag ncig ntawm cov ntawv PVC los ntawm kev sib sau cov qauv sib dhos ntawm lawv cov molecular chains. Piv txwv li, kom sib luag ntawm cov neeg sawv cev ntawm cov tshuaj nplaum ntawm PVC molecular charts ntawm pvc molecular charts, yog li txo cov tshuaj muaj teeb meem raug tso tawm thaum cov khoom siv.