Enhancing interfacial strength of epoxy resin composites via evolving hyperbranched amino-terminated POSS on carbon fiber surface

被引：134
作者：
Ma, Lichun [1 ]
Zhu, Yingying [1 ]
Wang, Mengzhu [1 ]
Yang, Xiaobing [2 ]
Song, Guojun [1 ]
Huang, Yudong [2 ]
机构：
[1] Qingdao Univ, Coll Chem & Chem Engn, Inst Polymer Mat, Qingdao 266071, Peoples R China
[2] Harbin Inst Technol, Sch Chem Engn & Technol, Harbin 150001, Heilongjiang, Peoples R China
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2019年 / 170卷
基金：
中国博士后科学基金;
关键词：
Carbon fibers; Polymer-matrix composites; Interface; Interfacial strength; POLYHEDRAL OLIGOMERIC SILSESQUIOXANE; MECHANICAL-PROPERTIES; BRANCHED POLYETHYLENEIMINE; SILICA NANOPARTICLES; MICROSTRUCTURE; ARCHITECTURE; ENHANCEMENT;
D O I：
10.1016/j.compscitech.2018.12.001
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
A self-synthesized octa(gamma-chloropropyl) polyhedral oligomeric silsesquioxanes (POSS) and its evolutionary amino-terminated hyperbranched structure were introduced onto the carbon fibers (CFs) surface (CF-G(n)-POSS-NH2, n = 1, 2 and 3) by chemically and successively grafting method to improve the interfacial properties of CFs/epoxy composite. The fiber surface structures could be tuned through regulating grafting generation (n) of CF-G-POSS-NH2, and the polarity and roughness of CF surface increased with the incremental dendritic generation number. Interfacial shear strength (IFSS), interlaminar shear strength (ILSS) and dynamic mechanical properties of the functionalized CFs composites improved as the grafting generation increased, which may be attributed to the varying degrees of chemical interaction, mechanical interlocking and resin wettability provided by hyperbranched G(n)-POSS-NH2 interface. Moreover, the interfacial structure has been also speculated and analyzed.
引用
收藏
页码：148 / 156
页数：9
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