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聚氯乙烯/插层水滑石的热稳定性和力学性能

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Abstract:

马来酸和水滑石(MgAl-CO3LDHs)反应制备马来酸根插层水滑石(MgAl-maleateLDHs),X射线衍射和红外光谱分析表明马来酸根已插层水滑石层间。把插层有马来酸根的水滑石填充聚氯乙烯(PVC),研究马来酸根插层水滑石对PVC热稳定性和力学性能的影响。结果表明水滑石层间的马来酸根中的双键和PVC降解产生的C=C共轭双键发生Alder-delies加成反应,PVC的初期色泽得到改善,但PVC的长期热稳定性稍有降低;同时,插层改性后的水滑石改善了PVC和水滑石之间的相容性,提高了PVC的力学强度。

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