连续玻璃纤维增强聚丙烯预浸带熔融预浸过程  

Pre-impregnation of continuous glass fiber reinforced polypropylene prepreg

作　　者：李莹[1] 信春玲[1] 曹敏华[1] 任峰[1] 段涛[1] 何亚东[1,2] LI Ying;XIN Chunling;CAO Minhua;REN Feng;DUAN Tao;HE Yadong(College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China;Polymer Processing Equipment Engineering Research Center, Ministry of Education, Beijing 100029, China)

机构地区：[1]北京化工大学机电工程学院,北京100029 [2]教育部高分子材料加工装备工程研究中心,北京100029

出　　处：《复合材料学报》2018年第5期1080-1086,共7页Acta Materiae Compositae Sinica

基　　金：国家重点研发计划子项目(2016YFB0302005)

摘　　要：采用熔融浸渍法制备连续玻璃纤维增强聚丙烯(GF/PP)热塑预浸带,研究了PP熔体浸渍连续GF束过程。采用旋转流变仪对PP进行测试分析,结果显示其流变特性符合Carreau模型。以达西定律为理论基础,结合浸渍模具结构参数、材料物性参数及相应工艺参数,推导了Carreau流体树脂浸渍连续GF束的理论模型。在不同浸渍温度与牵引速度下进行实验以验证浸渍模型的准确,实验结果与理论值相符。利用浸渍模型分析模具结构参数及工艺参数对浸渍程度的影响,结果表明,通过增加模具浸渍辊数目、增大浸渍辊半径、减小辊间距及提高浸渍温度等方法可提高浸渍程度。The continuous glass fiber reinforced polypropylene（GF/PP）prepreg was prepared by melt impregnation method.The rheological measurements show that PP behaves Carreau fluid characteristics.Based on the Darcy＇s law,an impregnation model of Carreau fluid impregnating continuous GF bundle was proposed,taking the structural parameters,material properties and process parameters into account.The impregnation model was validated after experiments under different impregnation temperatures and pulling speeds,and the experimental results agree with the theoretical values.The impregnation procedure was analyzed by utilizing the model,and the results show that the impregnation degree can be raised significantly through increasing the dipping rolls number and radius,reducing the spacing between the rollers,and increasing the impregnation temperature.

关 键 词：浸渍模型 Carreau流体 连续玻璃纤维束 预浸带 熔融浸渍 

分 类 号：TQ327.11[化学工程—合成树脂塑料工业]