填料类型对PVC溶胶凝胶塑化流变性能的影响  

Influence of Filler Type on the Gelation and Fusion Rheological Properties of PVC Plastisols

作　　者：杨照[1] 邓秋静[2] 吉玉碧[1,3] 王一宁 罗恒[1] YANG Zhao 1 ,DENG Qiu-jing 2 ,JI Yu-bi 1,3 ,WANG Yi-ning 1 ,LUO Heng 1(1.National Engineering Research Center for Compounding and Modification of Polymer Materials,Guiyang 550014,China;2.Guizhou University,Guiyang 550025,China;3.College of Science of Beijing University of Chemical Technology,Beijing 100029,Chin)

机构地区：[1]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014 [2]贵州大学,贵州贵阳550025 [3]北京化工大学理学院,北京100029

出　　处：《塑料工业》2018年第5期133-137,共5页China Plastics Industry

基　　金：贵州省2016年高层次创新性人才项目

摘　　要：采用振动黏度计和旋转流变仪研究了不同填料制备的聚氯乙烯(PVC)溶胶的黏度随温度或时间的变化情况。结果表明,随温度升高或时间延长,不同填料填充PVC溶胶的黏度呈先降低,后由缓慢升高至快速升高,形成一个肩峰并达到一个最大值,最后又逐步变小的非正态分布趋势。用旋转流变仪可将PVC溶胶的凝胶塑化流变行为完整表征出来,是一个更为有效的方法。加入填料使得PVC溶胶的黏度增大,凝胶过程加快,主要与填料粒径及形貌有关。是否添加填料以及填料类型对PVC溶胶相应的形态转变温度和时间没有影响。The variation of the viscosity of polyvinyl chloride（PVC） plastisol prepared by different fillers with temperature or time was studied by using a vibrating viscosity meter and a rotating rheometer.The results show that with the increase of temperature or time,the viscosity of PVC plastisol firstly decreases,then rapidly rises followed by a slowly rise,after that it reaches a peak,finally it decreases gradually.The rheological curves of viscosity change shows the trend of non-normal distribution.It is a more effective method to characterize the rheological behavior of the gelation and fusion of PVC plastisol with a rotating rheometer.Adding filler makes the viscosity of PVC plastisol increase and make the gelation process accelerate,which is mainly related to the particle size and morphology of the filler.The filler addition and the filler type have no effect on the morphologic transition temperature and time of the PVC plastisol.

关 键 词：聚氯乙烯 溶胶 填料 凝胶 流变 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]