浸渍模具结构对长玻璃纤维增强聚丙烯预浸料的影响  

The Influence of Dipping Mold Structure on Long Glass Fiber Reinforced Polypropylene Prepreg

作　　者：李杰 任峰[1] 杨一飞 徐然 信春玲[1] 何亚东[1,2] LI Jie;REN Feng;YANG Yifei;XU Ran;XIN Chunling;HE Yadong(College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029;Polymer Processing Equipment Engineering Research Center,Ministry of Education,Beijing 100029)

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：《纤维复合材料》2022年第1期16-22,共7页Fiber Composites

摘　　要：针对弯曲流道浸渍模具建立了纤维浸渍模型和纤维断裂模型,利用实验室自行设计的两种弯曲流道浸渍模具制备了长玻璃纤维增强聚丙烯预浸料,通过测试预浸料各项性能分析弯曲流道浸渍模具结构的优缺点。实验结果表明,所建立的理论模型能够有效预测预浸料浸渍程度和纤维断裂率,可用于浸渍模具结构优化。此外,在相同工艺条件下,与斜齿形浸渍模具相比,波浪形浸渍模具可以有效提高浸渍程度,降低纤维断裂率,提升预浸料的力学性能。A fiber impregnation model and a fiber fracture model were established for the curved runner impregnation mold. The long glass fiber reinforced polypropylene prepreg was prepared by using two kinds of curved runner impregnation molds designed by the laboratory. The performance analysis of the prepreg was passed. The advantages and disadvantages of the curved runner immersion mold structure. The experimental results show that the established theoretical model can effectively predict the degree of prepreg impregnation and fiber breakage rate, and can be used to optimize the impregnation mold structure. In addition, under the same process conditions, compared with the helical tooth-shaped dip mold, the wave-shaped dip mold can effectively increase the degree of impregnation, reduce the fiber breakage rate, and improve the mechanical properties of the prepreg.

关 键 词：模具结构 熔融浸渍 预浸料 浸渍模型 断裂模型 

分 类 号：TQ327.1[化学工程—合成树脂塑料工业]