连续玻纤增强聚丙烯预浸带熔融浸渍过程纤维断裂研究  

Fiber fracture of continuous glass fiber-reinforced polypropylene prepreg tapes during melt impregnation

作　　者：李杰 徐然 任峰[1] 杨一飞 信春玲[1] 何亚东[1,2] LI Jie;XU Ran;REN Feng;YANG Yifei;XIN Chunling;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：《中国塑料》2022年第6期69-76,共8页China Plastics

摘　　要：为提高连续玻纤增强聚丙烯预浸带(PP/GF)性能,采用熔融浸渍法制备连续玻璃纤维增强聚丙烯预浸带,研究了PP熔体浸渍连续GF束过程。基于Weibull分布函数建立了纤维断裂数学模型,预测预浸带生产过程中纤维断裂率并描述实验结果。结果表明,模型与实验数据吻合较好,能够为工业化生产提供指导;纤维束在浸渍模具中受到树脂熔体的作用,及纤维与设备之间的摩擦是影响纤维断裂的主要因素,适当提高浸渍模具温度,降低纤维束牵引速度,增大浸渍模具间隙能有效降低纤维断裂率,提高工艺稳定性。To improve the performance of prepreg tapes,a continuous-glass-fiber-reinforced polypropylene(PP/GF)prepreg tape was prepared using a melt impregnation method,and the impregnation process of continuous fiber bundle in the PP melt was investigated. A mathematical model of fiber fracture was established by means of the Weibull distribution function to predict the fiber fracture rate during the producing process of the prepreg tape and to describe the experimental results. The results indicated that the prediction results obtained from the model was in good agreement with the experimental data. This provides guidance for the industrial production. The fiber fracture was mainly influenced by the effect of resin melt on the fiber bundle in the mold as well as the friction between the fiber and the equipment. Through improving the mold temperature appropriately,reducing the fiber traction speed,and increasing the mold gap,the fiber breakage was reduced effectively and the process stability was improved.

关 键 词：熔融浸渍 纤维断裂 预浸带 Weibull函数 断裂模型 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]