碳纳米纤维增强玻璃纤维/聚烯复合材料在重复挤出下进行机械回收的加工稳定性
Tetsuo Takayama1, Daisuke Shimizu2, Shunsuke Kobayashi1
1Graduate School of Organic Materials Science, Yamagata University, Yonezawa 992-8510, Japan.
Materials (Basel, Switzerland)
|October 29, 2025
概括
将碳纳米纤维 (CBNF) 添加到玻璃纤维增强聚烯 (PP/GF) 中,可以显著提高其可回收性. 这种复合材料在经过多次挤出循环后显示出更好的粘度稳定性和机械性质保留.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物工程 聚合物工程
- 复合材料 复合材料 复合材料
背景情况:
- 玻璃纤维增强聚烯 (PP/GF) 对于轻型汽车零部件至关重要.
- 回收PP/GF复合材料面临的挑战是由于纤维破裂和矩阵降解.
研究的目的:
- 研究碳纳米纤维 (CBNF) 添加对PP/GF复合材料可回收性的影响.
- 为了评估PP/GF复合材料的性能,经过多次挤出循环后与或没有CBNFs.
主要方法:
- 将同型PP与GF和CBNF结合在一起.
- 将复合材料置于多达九个重复的挤出周期中.
- 评估融粘度 (MVR),纤维形态,曲性质,界面剪切强度和冲击强度.
主要成果:
- 添加CBNF稳定了融粘度,MVR在9个循环后仅增加2.9倍,而只有GF的PP则增加5.4倍.
- 在含有CBNF的复合材料中,纤维长度保存良好 (96-98%的保留).
- 屈曲强度 (>92%) 和模量 (>95%) 在很大程度上保持不变,撞击强度保持了初始值的84%.
结论:
- 小额添加5%重量的CBNFs有效地抑制了回收过程中的粘度损失.
- CBNF增强了回收PP/GF复合材料的长期稳定性和机械性能.
- 这种方法为在运输应用中回收PP/GF复合材料提供了一个可持续的策略.
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