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Preparation of Polyimide Fiber/Thermoplastic Resin Composites with Improved Mechanical Properties
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Author NameAffiliation
Hongyang Dang Laboratory of Papermaking, School of Textiles & Clothing, Jiangnan University, Wuxi, Jiangsu Province, 214122, China
Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, Jiangsu Province, 214122, China 
Le Chen Laboratory of Papermaking, School of Textiles & Clothing, Jiangnan University, Wuxi, Jiangsu Province, 214122, China
Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, Jiangsu Province, 214122, China 
Guoliang Zhang Laboratory of Papermaking, School of Textiles & Clothing, Jiangnan University, Wuxi, Jiangsu Province, 214122, China
Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, Jiangsu Province, 214122, China 
Ruqiang Zhang Laboratory of Papermaking, School of Textiles & Clothing, Jiangnan University, Wuxi, Jiangsu Province, 214122, China
Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, Jiangsu Province, 214122, China 
Jie Chen Laboratory of Papermaking, School of Textiles & Clothing, Jiangnan University, Wuxi, Jiangsu Province, 214122, China
Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, Jiangsu Province, 214122, China 
Zhu Long Laboratory of Papermaking, School of Textiles & Clothing, Jiangnan University, Wuxi, Jiangsu Province, 214122, China
Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, Jiangsu Province, 214122, China 
Fund Project:The authors are grateful for financial support from the Lianyungang 555 Talents Project Program of China (2015-13).
 
Abstract:As a high-performance material for preparing composite materials, polyimide fibers suffer from many potential drawbacks, including poor bonding with other substrates, which results in composite materials with poor mechanical properties. Therefore, this study proposed a simple and rapid technique for obtaining loose, porous polyimide fiber papers by implementing a wet method using equal amounts of polyimide fiber and polyimide fiber paper as reinforcements, respectively. The polyimide resin-based composite materials were prepared by hand lay-up and hot pressing. The results showed that the paper-based reinforcement exhibited high porosity and the fibers were arranged with a uniform pore size distribution. The tensile properties, bending performance, and interlaminar shear performance of the paper-based composite improved by 130%, 108%, and 34.5%, respectively, compared to those of the fiber-based counterpart. The factors affecting the mechanical properties of the composites were analyzed based on the fiber length, fiber beating or lack thereof, and the basis weight of the paper. The increased uniformity of the polyimide fiber paper changed the ordering of the fibers and resolved drawbacks such as difficult dispersion, uneven pore size distribution, and poor mechanical properties related to single fibers in the resin-based composite material.
keywords:composites  polyimide fiber  polyimide fiber paper  wet forming technology  mechanical properties
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