Homogenous nanofiber skeleton-reinforced shape memory polyimide aerogel composites with high deformability and rapid recovery

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-04-02 DOI:10.1016/j.compositesa.2025.108907

Yufan Zhang, Xiang Wang, Minhao Guo, Le Li, Tianxi Liu

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引用次数: 0

Abstract

Shape memory polymer aerogels have garnered significant attention for intelligent applications, yet their practical implementation remains constrained by inadequate deformation tolerance and sluggish recovery kinetics. To address these challenges, we present a homogeneous reinforcement strategy for constructing polyimide aerogel composites reinforced with an interpenetrating nanofiber skeleton. Through precise regulation of hierarchical pore architecture, strong interface interactions, and enhanced recovery stress, the engineered aerogel composite demonstrates remarkable enhancements in both structural and functional properties. The optimized aerogel composite exhibits exceptional thermal stability, superior deformation tolerance, and fast shape recovery response. Particularly noteworthy is its unprecedented shape recovery capability, enabling it to reliably and fully recover from complex and large deformations within 5 s. This advancement not only establishes a new paradigm for designing high-performance shape memory polymer aerogels but also significantly expands their potential utilization in cutting-edge technological applications.

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形状记忆聚合物气凝胶在智能应用领域备受关注，但其实际应用仍受到变形耐受性不足和恢复动力学缓慢的制约。为了应对这些挑战，我们提出了一种均匀增强策略，用于构建以相互渗透的纳米纤维为骨架增强的聚酰亚胺气凝胶复合材料。通过对分层孔隙结构、强大的界面相互作用和增强的恢复应力进行精确调节，工程气凝胶复合材料的结构和功能特性都得到了显著提高。优化后的气凝胶复合材料具有优异的热稳定性、卓越的变形耐受性和快速的形状恢复响应。尤其值得一提的是，它具有前所未有的形状复原能力，能在 5 秒钟内从复杂和巨大的变形中可靠地完全恢复。这一进步不仅为设计高性能形状记忆聚合物气凝胶建立了新的范例，还大大拓展了其在尖端技术应用中的潜在用途。

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来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.