碳/碳复合材料的绿色循环利用固态剪切削技术作为聚胺多功能修饰剂
Qianyue Tan1, Shuangxin Lai1, Liang Xue2
1State Key Lab of Polymer Materials and Engineering, Sichuan University, Chengdu 610065, China.
Polymers
|November 9, 2024
概括
难以回收的碳/碳 (C/C) 复合材料现在可以使用固态剪切削 (S3M) 技术. 这种方法有效地回收碳纤维和矩阵,创造具有增强性能的增值材料.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 可持续化学 可持续化学
背景情况:
- 碳/碳 (C/C) 复合材料在航空航天和能源领域至关重要.
- 传统的C/C复合材料回收方法不足,导致垃圾填埋处置.
- 为C/C复合材料制定高效和环保的回收利用策略至关重要.
研究的目的:
- 为碳碳摩擦复合材料 (CFCM) 引入一种新的,高价值的回收方法.
- 使用固态剪切削 (S3M) 进行碳基质的超细削,同时保留碳纤维.
主要方法:
- 采用固态剪切削 (S3M) 技术处理CFCM.
- 从碳基质中分离碳纤维,以创建一个复合粉末.
- 为了增强性能,将PA6与得到的粉末结合在一起.
主要成果:
- 实现了碳基质的超细磨削,保存了碳纤维.
- 回收复合材料粉具有导电性,导热性,强化性和耐磨性.
- 使用PA6增加了拉伸强度 (64.35至72.79MPa) 和导热率 (0.211至0.611W/mK).
- 摩擦系数降低了25.4% (0.51到0.36) 和增加了热偏移温度 (47.2到108.2°C).
结论:
- 对于CFCM来说,S3M是一种高效,高价值和可扩展的回收策略.
- 该技术可从回收的C/C复合材料中生产增值产品.
- 这种方法为可持续材料提供了重要的应用前景.
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