多辊轴辅助高黏树脂熔融浸渍连续纤维工艺的影响因素

针对多辊轴辅助高黏树脂熔融浸渍连续纤维的过程, 基于达西定律、 微元法及展开理论, 建立了包含各影响因素的浸渍表达式。对所建立的表达式赋予实验条件进行计算, 结果与已有实验结果吻合良好。理论分析表明: 用辊轴法对纤维束进行分散, 当多辊轴水平布置时, 对纤维展开辅助作用比较小, 应采用错位排列; 辊轴个数增加, 纤维张力增加(增加纤维断裂风险), 宜采用3~5个辊轴。

Influence factors of high viscosity resin melt impregnation of continuous fiber in multi pins-assisted process

Based on theories of Darcy-law,micro-element and the fiber spreading,this paper extended the pin-assisted melt impregnation theory which traditionally built for single pin,to multi pins-assisted melt impregnation,in particular for the high viscosity thermoplastic resin.The equation in terms of all of influence factors for multi pins-assisted melt impregnation was developed.The theoretical prediction calculated with assigned parameters was in accordance with the experimental data reported.The results show: pins arrangement for the fiber spreading should be in zigzag as the horizontally-arranged pins has less spread effect;as the fiber tension will raise greatly with adding the number of impregnation pins,which increases the fiber break risk,the number of impregnation pins ought to be 3~5.