Cov nyhuv synergistic ntawm cov organic tin thiab hmoov calcium zinc stabilizers hauv polyvinyl chloride (PVC)

Cov nyhuv synergistic ntawm cov organic tin thiab hmoov calcium zinc stabilizers hauv polyvinyl chloride (PVC):

Cov tshuaj stabilizer organic tin (thiol methyl tin) yog ib hom PVC heat stabilizer uas siv ntau. Lawv ua ke nrog acidic hydrogen chloride (HCl) hauv PVC los tsim cov ntsev inorganic uas tsis muaj teeb meem (xws li tin chloride), yog li tiv thaiv kev sib sau ua ke ntawm HCl thiab txo qhov kev puas tsuaj thiab daj ntawm cov khoom siv PVC.

Hmoov calcium zinc stabilizer yog cov calcium thiab zinc ntsev sib xyaw, feem ntau ntxiv rau hauv daim ntawv hmoov zoo rau PVC. Ob qho tib si calcium thiab zinc ions muaj peev xwm ua kom PVC ruaj khov. Calcium ions tuaj yeem tshem tawm cov kua qaub tsim tawm hauv PVC thiab tsim cov ntsev calcium ruaj khov. Zinc ions cuam tshuam nrog hydrogen peroxide (HCl) hauv PVC los tsim cov inorganic compounds tsis muaj teeb meem thiab tiv thaiv kev sib sau ua ke ntawm HCl.

Thaum cov organic tin thiab hmoov calcium zinc stabilizers sib koom ua ke hauv PVC, lawv tuaj yeem txhawb nqa ib leeg thiab txhim kho lub peev xwm los kho HCl. Organic tin tuaj yeem muab kev muaj peev xwm neutralizing ntxiv los rhuav tshem ntau HCl tsim tawm, thaum cov hmoov calcium zinc stabilizers tuaj yeem muab ntau calcium thiab zinc ions, ntxiv tiv thaiv kev sib sau ua ke ntawm HCl. Los ntawm qhov kev cuam tshuam synergistic no, organic tin thiab hmoov calcium zinc stabilizers tuaj yeem txhim kho qhov ruaj khov thermal ntawm cov ntaub ntawv PVC, txhim kho lawv lub neej kev pabcuam thiab kev ua haujlwm ruaj khov.

Yuav tsum nco ntsoov tias qhov ntau thiab tsawg ntawm cov organic tin thiab calcium zinc stabilizers yuav tsum tau kho kom haum raws li qhov xav tau tshwj xeeb thiab kev siv ib puag ncig ntawm PVC cov khoom, txhawm rau kom ua tiav qhov zoo tshaj plaws synergistic effect. Tib lub sijhawm, nws yog ib qho tsim nyog yuav tsum tau them sai sai rau kev nyab xeeb thiab cov teeb meem ib puag ncig thaum siv kom tsis txhob muaj kev cuam tshuam tsis zoo rau tib neeg kev noj qab haus huv thiab ib puag ncig.