Research Development of Interlaminar Reinforcing and Toughening Technique of Carbon Fiber Composites
LU Kangyi1 , ZHANG Yueyi1 , YANG Xiaoping1 , LI Gang 1，2 , SU Qingfu2 , GAO Shangbing2
(1. College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China; 2. Changzhou Institute of Advanced Materials, Beijing University of Chemical Technology, Changzhou 213164, China)
Abstract：The upgraded toughening technique of carbon fiber reinforced polymer was the important approach for preparing high performance composites. In the second-generation composite, thermoplastics have been used to toughen resin matrix by physical blending. In the third-generation composite, interlaminar reinforcing and toughening methods have been developed. Fundamental researches on nanofibers, resin films and particles interlaminar toughening carbon fiber composites have been carried out by Advanced Composites Center (ACC) in Beijing University of Chemical Technology (BUCT), and the scientific problems of method constriction and toughening mechanism were broken through and the engineering application of particle interlaminar toughening was also achieved. Combining with domestic and foreign developments, the accomplishments of ACC teams in interlaminar reinforcing and toughening were reviewed, and the effects of three kinds of interlaminar toughening and corresponding multiscale interlaminar reinforcing and toughening techniques were contrasted. And the application prospect on interlaminar reinforcing and toughening technique was expected.
2020, 
