机械辊子上纤维束展宽模型的建立
Establishment of fiber tow spreading model on mechanical rollers
徐然 1许文翀 1王明欢 1任峰 1信春玲 1何亚东2
作者信息
- 1. 北京化工大学 机电工程学院,北京 100029
- 2. 北京化工大学 机电工程学院,北京 100029;教育部高分子材料加工装备工程研究中心,北京 100029
- 折叠
摘要
制备预浸带需要将纤维束铺展变宽以便于树脂浸润,而牵引张力是纤维束展宽的动力来源,当前纤维束的展宽模型少有涉及牵引张力的影响效果.针对纤维束在机械棍子上的牵引展宽过程,结合受力分析得出纤维束运动系统的输入功及沿轴向、横向上的摩擦消耗功,依据能量守恒原理建立纤维束展宽模型.利用实验室自行搭建的机械棍子预分散装置,对展宽模型进行对比验证与分析.结果表明:牵引张力是纤维束展宽的重要原因,机械辊子个数、半径、光滑程度及纤维束与辊子间的包角都会影响纤维束的展宽,相较于Wilson展宽模型,能量平衡展宽模型能够更好地预测纤维的展开宽度,可用于指导纤维束的预分散过程.
Abstract
The preparation of prepreg tape required spreading the fiber tow to facilitate resin impregnation.Trac-tion tension is the driving force for fiber bundle spreading,but current fiber tow-spreading models rarely involve the effect of traction tension.Aiming at the spreading process of fiber tow on mechanical rollers,combining force analysis,the input work,and the friction work along the axial and lateral directions can be computed.Then the fiber tow spreading model can be established by energy conservation law.Utilizing the pre-dispersion device with mechanical rollers which was built by laboratory,contrastively validate and analyze the spreading model.The results indicate that traction tension is an important reason for fiber tow spreading.And the numbers,radius,smoothness of mechanical rollers,and the wrap angle between the fiber tow and the roller all affect the fiber tow spreading.Compared to the Wilson spreading model,the energy-balance spreading model can better predict the spreading width of fiber tow,and it can be used to guide the pre-dispersion process of fiber tow.
关键词
纤维束展宽/能量平衡/机械辊子/预浸带/预分散设备Key words
fiber tow spreading/energy conservation/mechanical rollers/prepreg tape/pre-dispersion device引用本文复制引用
基金项目
中国石油"新能源与新材料创新联合体"重点项目()
出版年
2024
NETL
NSTL
万方数据