摘要
为了提高聚四氟乙烯(PTFE)基复合材料的力学性能,须在树脂基体中添加玻璃纤维作为增强材料。以玻璃纤维为研究对象,采用一种浆料粉碎设备,通过调节浆料质量分数、设备的转速和粉碎的时间,调控纤维的长度分布,采用鲍尔筛分仪表征纤维的长度分布,研究结果表明:随浆料质量分数的增加、转速的增加、处理时间的延长,截留率均出现先增大后减小的趋势,浆料质量分数、转速、处理时间三者之间两两存在交互作用,浆料质量分数与处理时间、浆料质量分数与转速的交互作用比转速与时间的交互作用更加显著。数据分析与拟合结果显示:浆料质量分数为12.5%、转速为750r/min、处理时间为35s时,预测截留率最高,连续开展多次验证性实验,该条件处理后150μm≤玻纤长度<2mm的截留率可以稳定达到(34.7±2)%,满足工艺使用要求。
In order to improve the mechanical properties of polytetrafluoroethylene(PTFE)matrix composites,glass fiber should be added to the resin matrix as a reinforcing material.Taking glass fiber as the research object,a size pulverizing equipment is used to regulate the length distribution of the fibers by adjusting the size concentration,the rotation speed of the equipment and the pulverizing time,and a Bauer sieve is used to characterize the length distribution of the fibers.The research results show that with the increase of the size concentration,the rotation speed and the extension of the treatment time,the retention rate increases first and then decreases.There is a pair-to-pair interaction among the size concentration,the rotation speed and the treatment time,and the interaction between the size concentration and the treatment time as well as between the size concentration and the rotation speed are more significant than the interaction between the speed and the time.Data analysis and fitting results show that the predicted retention rate is the highest when the size concentration is 12.5%,the rotation speed is 750r/min,and the treatment time is 35s.After conducting multiple verification experiments continuously,the retention rate of 150μm≤glass fiber length<2mm can stably reach(34.7±2)%after processing under this condition,which can meet the production process requirements.
作者
薛微婷
韩笑
倪培榛
李易合
金霞
XUE Weiting;HAN Xiao;NI Peizhen;LI Yihe;JIN Xia(The 46th Institute of China Electronic Technology Group Corporation,Tianjin 300220)
出处
《玻璃纤维》
CAS
2024年第4期17-21,共5页
Fiber Glass
关键词
玻纤
玻纤长度
聚四氟乙烯
glass fiber
glass fiber length
polytetrafluoroethylene
