期刊
JOURNAL OF MATERIALS SCIENCE
卷 53, 期 4, 页码 2594-2603出版社
SPRINGER
DOI: 10.1007/s10853-017-1739-5
关键词
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资金
- National Natural Science Foundation of China [51463017]
- Science Foundation of Aeronautics of China [2016ZF56022]
- Natural Science Foundation of Jiangxi Province [20171BAB206019, 20171BAB216002]
The interface in carbon fiber (CF)-reinforced polymer composites plays an important role in determining the mechanical properties of composites. In order to improve the interfacial adhesion between the carbon fiber and resin matrix, we presented a facile and rapid method for grafting nano-sized titanium dioxide (nano-TiO2) onto the CF surface by means of thiol-ene click chemistry under UV irradiation. Experimental results demonstrate that the chemical bonds are formed between the CF and nano-TiO2. The introduction of nano-TiO2 significantly enhances the surface energy of fiber and increases the wettability and mechanical interlocking between fiber and resin, resulting in a significant increase in the interfacial properties of composites. Compared to the raw CF/epoxy composites, the composites reinforced by the CF grafted with nano-TiO2 show an improvement of 78% in the interfacial shear strength. Moreover, the results of the mechanical properties tests reveal that the flexural strength and tensile strength of composites increase by 32.3 and 39.6% after grafting with nano-TiO2.
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