从静态涂层到自适应介面:高温热塑性复合材料的不匹配驱动的双元件尺寸策略
Yining Wang1, Yu Deng1, Yijia Yao1
1State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Liaoning Technology Innovation Center of High Performance Resin Materials, Dalian Basalt Fiber Resin Matrix Composite Engineering Research Center, Department of Polymer Science & Engineering, Dalian University of Technology, Dalian 116024, P. R. China.
一个新的双组件大小策略通过创建自适应性纤维矩阵接口来增强高温复合材料. 这种方法提高了热稳定性和机械性能,为先进材料提供了一种多功能方法.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 复合材料 复合材料 复合材料
背景情况:
- 高温热塑性复合材料在实现稳定和响应的纤维矩阵接口方面面临着挑战.
- 现有的方法往往难以平衡热稳定性与适应性接口特性的需求.
研究的目的:
- 开发一种新型的尺寸策略,以控制碳纤维增强的聚乙硫基 (CF/PPESK) 复合材料的可控界面演变.
- 为了提高高温复合材料的热稳定性,机械性能和适应性响应.
主要方法:
- 一种双组分的体悬浮剂尺寸策略,使用一种刚性多胺酸盐 (PAAs) 前体和一种柔性硫化多甲乙烯硫基 (SPPESK).
- 在碳纤维上编码,然后进行热压加工,以根据玻璃过渡温度 (Tg) 差异诱导自发相位重建.
- 原子力显微镜 (AFM) 模块映射用于分析界面结构和分子相互透.
主要成果:
- 拟议的战略创建了一个协同的接口架构,具有刚性骨架和合规的透层,增强可湿性和兼容性.
- 复合材料表现出显著的改善:间层切割强度增加41.3%,曲强度增加43%.
- 在250°C保持超过60%的机械性能,其光滑的模量-梯度介面约为300nm.
结论:
- 基于Tg差异的双组件尺寸策略使高性能热塑性复合材料的动态自适应接口设计成为可能.
- 这种以水为基础,对环境无害的方法适用于各种矩阵和强化形式,改善界面强化和耐磨性.
- 为开发具有增强热和机械性能的先进复合材料提供了通用范式.
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