3D printed polyimide-based composite aerogels with shape memory and thermal insulation properties

IF 7.7 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Composites Communications Pub Date : 2025-03-04 DOI:10.1016/j.coco.2025.102335

Zhipeng Fu , Dingyi Yu , Tiantian Xue , Xu Zhang , Wei Fan

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Abstract

As a new type of lightweight, porous and intelligent deformation material, shape memory polyimide aerogel has a wide range of applications in extreme environments. However, due to the limitation of rheological properties and printing resolution, the formability of polyimide (PI) aerogel via 3D printing is poor. Herein, we report a 3D printed polyimide/silica composite aerogel with good shape memory and intelligent thermal management performance. The silica aerogel particles (SAP) can be used as a rheological modifier to adjust the rheological properties of the composite ink as well as regulate the pore structure of the aerogel and inhibit heat conduction to maintain the thermal insulation performance. Furthermore, 3D printing technology is used to construct shape memory polyimide aerogel composites with various programming structures. The obtained PI/SAP composite aerogels show a shape fixation and recovery ratio of more than 93 %, and excellent thermal insulation and fire-retardant performance, which shows great potential for application in lightweight and high-performance intelligent thermal insulation technologies.

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具有形状记忆和隔热性能的3D打印聚酰亚胺基复合气凝胶

形状记忆聚酰亚胺气凝胶作为一种新型轻质、多孔、智能变形材料，在极端环境下有着广泛的应用。然而，由于流变性能和打印分辨率的限制，聚酰亚胺（PI）气凝胶的3D打印成形性较差。在此，我们报告了一种具有良好形状记忆和智能热管理性能的3D打印聚酰亚胺/二氧化硅复合气凝胶。硅胶气凝胶颗粒（SAP）可以作为流变改性剂，调节复合油墨的流变性能，调节气凝胶的孔隙结构，抑制热传导，保持复合油墨的保温性能。在此基础上，利用3D打印技术构建了具有多种编程结构的形状记忆聚酰亚胺气凝胶复合材料。所制得的PI/SAP复合气凝胶具有93%以上的固形率和回复率，具有良好的保温阻燃性能，在轻量化、高性能智能保温技术中具有广阔的应用前景。

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.