弹性体与蒙脱土对苄基化棉秆皮纤维型复合材料性能的影响

发布时间：2018-01-25 13:11

本文关键词： 聚氨酯复合材料韧性强度蒙脱土苄基化　出处：《上海纺织科技》2017年06期 　论文类型：期刊论文

【摘要】：苄基化棉秆皮纤维因热熔粘度过高,无法有效地浸润纤维,故其自增强复合材料力学性能受到影响。分别采用聚氨酯(TPU)和蒙脱土(MMT)与苄基化棉秆皮纤维混炼制备复合材料,以提高复合材料的韧性和强度;利用SEM分别研究了添加TPU和MMT后复合材料的微观结构,探究TPU和MMT的用量变化对复合材料力学性能的影响及原因。结果表明:TPU和MMT对苄基化棉秆皮纤维型复合材料具有良好的增韧增强效果;当TPU用量在20%以上时,增韧效果较好,但不能同时增强和增韧;而MMT用量在4%时,可以同时获得较好的增韧和增强效果。
[Abstract]:Benzylated cotton stalk skin fiber can not effectively infiltrate the fiber because of its high hot melt viscosity. Therefore, the mechanical properties of the self-reinforced composites were affected. The composites were prepared by mixing polyurethane (TPU) and montmorillonite (MMT) with benzylated cotton stalk skin fibers. To improve the toughness and strength of composites; The microstructure of the composites after the addition of TPU and MMT was studied by SEM. The effects of TPU and MMT contents on the mechanical properties of the composites were investigated. The results showed that TPU and MMT had a good toughening and reinforcing effect on benzylated cotton stalk skin fiber composites. When the amount of TPU is more than 20%, the toughening effect is better, but it can not be strengthened and toughened at the same time. When the dosage of MMT is 4, good toughening and strengthening effect can be obtained at the same time.
【作者单位】：大连工业大学纺织与材料工程学院;
【分类号】：TB332
【正文快照】： 近年来,以塑化天然植物纤维作为基体,制备天然纤维增强塑化植物纤维基复合材料引起了人们的关注,尤以苄基化和氰乙基化改性纤维的研究取得了很大的进展[1-3]。该复合材料不但基体和增强纤维来源于植物纤维,价格低廉又环境友好,而且塑化后天然纤维与增强纤维化学成分相近,复合

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