| 水滑石/钙锌复合热稳定剂对PVC的热稳定作用 |
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| 引用本文： | 严海彪,李明,刘庆丰,王晓艳.水滑石/钙锌复合热稳定剂对PVC的热稳定作用[J].高分子材料科学与工程,2009(3):75-77,81. |
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| 作者姓名： | 严海彪 李明 刘庆丰 王晓艳 |
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| 作者单位： | 湖北工业大学化学与环境工程学院; |
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| 摘 要： | 本文制备了水滑石/钙锌复合热稳定剂,采用XRD、FT-IR及静态热老化、脱HCl等实验及分析手段,探讨了水滑石对PVC的热稳定机理,研究了水滑石/钙锌复合热稳定剂对PVC的热稳定性能。实验表明,水滑石对PVC热解释放的HCl进行吸附分两个过程,首先层板羟基与HCl反应,然后层间CO32-与Cl-进行交换,可明显改善PVC的热稳定性,使PVC脱HCl的诱导时间提高了1.4倍。
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| 关 键 词： | 水滑石 复合热稳定剂 聚氯乙稀 热稳定机理 |
Thermal Stablity of LDHs/Ca-Zn Composite Stabilizer for PVC |
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| YAN Hai-biao,LI Ming,LIU Qing-feng,WANG Xiao-yan.Thermal Stablity of LDHs/Ca-Zn Composite Stabilizer for PVC[J].Polymer Materials Science & Engineering,2009(3):75-77,81. |
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| Authors: | YAN Hai-biao LI Ming LIU Qing-feng WANG Xiao-yan |
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| Affiliation: | College of Chemical and Environmental Engineering;Hubei University of Technology;Wuhan 430068;China |
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| Abstract: | LDHs/Ca-Zn composite stabilizer was prepared,by the use of XRD,FT-IR,static thermal aging method and dehydrochlorination method,the thermal stability mechanism of LDHs for PVC was investigated,and the thermal stability of LDHs/Ca-Zn composite stabilizer also was studied.The results indicate that HCl which is released by thermal degradation of PVC is absorbed by LDHs in a two-step process,layer hydroxyl groups reacte with HCl firstly,and then interlayer anion CO2-3 is exchanged by Cl-.The adding of LDHs can ... |
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| Keywords: | LDHs composite thermal stabilizer PVC thermal stability mechanism |
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