| 丙烯酸丁酯共聚单元对氯乙烯聚合物热降解过程的影响 |
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| 引用本文： | 赵清香,朱诚身,杜宝石.丙烯酸丁酯共聚单元对氯乙烯聚合物热降解过程的影响[J].河南科学,1989(Z1). |
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| 作者姓名： | 赵清香 朱诚身 杜宝石 |
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| 作者单位： | 郑州大学化学系，郑州大学化学系，郑州大学化学系 |
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| 摘 要： | 本文利用热重和DSC法研究了丙烯酸丁酯(BA)共聚单元对氯乙烯(VC)聚合物热降解过程的影响,发现VC-BA共聚物的侧基消除起始温度比PVC降低,而峰值温度和主链裂解温度却提高,侧基上有残存的C=O基存在,不象PVC侧基消除时伴有主链裂解产物选出。BA单元的引入,虽降低了侧基的热稳定性,却提高了消除反应及其产物共轭多烯的稳定性。B A对热降解的反应热效应影响不大。
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| 关 键 词： | 氯乙烯——丙烯酸丁酯共聚物 热降解过程 |
EFFECT OF BUTYL ACRYLATE USED AS COPLYMERIC UNIT UPON THERMAL DEGERADATION PROCESS OF VINYL CHLORIDE POLYMER |
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| Zhao Qingxiang Zhu Chengshe Du Baoshi.EFFECT OF BUTYL ACRYLATE USED AS COPLYMERIC UNIT UPON THERMAL DEGERADATION PROCESS OF VINYL CHLORIDE POLYMER[J].Henan Science,1989(Z1). |
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| Authors: | Zhao Qingxiang Zhu Chengshe Du Baoshi |
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| Abstract: | The effect of copolymeric unit butyl acrylate(BA) upon the thermal degradation process of vinyl chloride(vc) polymer was studied by TG and DSC. We found that the starting temperature of elemination reaction of the side-base of VC-BA copolymer was lower than PVC, but the peak temperature and the temperature of the random scission of the main-chain was higher than FVC. After the elemination reaction some carbonyl groups at the side-base of VC-BA were remained. PVC accompanyed the escaping of the small molecular products of the main-chain degradation when the elemination reaction, but VC-BA doesnt. The introduction of BA to the polymer lowered the thermal stability of the side-base, but rised the stability of the elemination of HCl and the produced conjugated double bouds main-chain. |
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| Keywords: | vinyl chloride-butyl acrylate copol ymer thermal degradation process |
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