【摘要】 采用电子自旋探针技术对加入珠光云母和云母填充改性聚氯乙烯（ＰＶＣ）的链段运动行为－玻璃化温度Ｔｇ及旋转活化能Ｅａ进行研究．实验表明：电子自旋探针ＨＯＮＯ在本体系中的刚性极限谱为６．８６ｍＴ；自旅旋转相关时间在１０ｎｓ左右，属慢旋转运动范围．并从各ＥＳＲ谱得：增塑的聚氯乙烯（ＰＶＣ）玻璃化温度Ｔｇ下降；对硬制品以加１６７ｍｇ／ｇ（即２０份）增塑剂为宜；珠光云母聚氯乙烯的Ｅａ较低，优于目前大量生产的碱式碳酸铅珠光聚氯乙烯；云母填充改性聚氯乙烯随填充量增加，其玻璃化温度Ｔｇ上升，活化能Ｅａ增加．填充量为１６７ｍｇ／ｇ时．加工及使用等综合性能最佳．更多还原

【Abstract】 Electron spin probe teclmology is used to study segmental motion behavior of periatohcMica / PVC and Mica / PVC. The glass-transition temperatures Tg (or T50G) of the various PVC sampleswere obtained by means of 2A’ ￣ T curves.The apparent active energies Ea of the segmental motion ofPerlatotic Mica / PVC and Mica / PVC have been given by Arrhenius equation,T.=TR’ OeEa /RT. TheTi (or T50G) would decreasing when DOP was increased in the PVC. The segmental rotational active energyof Perlatotic Mica / PVC is lower than one of 2PbCO-3Ph(OH)-2PVC. Following the coca increased, theboth of Tg and Ea of the Mica / PVC could slowly rise. Experimential results shown that the used properhes of PVC would be excellent if the content of 167mg’ g-1 (20 part) of coca is ben kept.更多还原