期刊
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
卷 33, 期 2, 页码 127-136出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0731684413509701
关键词
Cyanate ester; macromolecular silane coupling agent; nano-SiO2; mechanical properties; interface
资金
- Aerospace Science Foundation of China [2011ZF53064]
- Program of Science and Technology Plan of Xi'an government [YF07005]
In this paper, a novel kind of high-performance composite was developed by blending 2, 2-Bis(4-cyanatophenyl)isopropylidene with nano-silica (nano-SiO2), in which the nano-SiO2 was modified by a tri-copolymer of styrene, vinyltrimethoxysilane and methacrylate. The transmission electron microscopic and scanning electron microscopic micrographs indicated that the modified nano-SiO2 particles were dispersed in the 2-Bis(4-cyanatophenyl)isopropylidene matrix homogeneously. Compared with pure 2-Bis(4-cyanatophenyl)isopropylidene resin, the impact and flexural strengths of the nanocomposite materials were improved markedly with up to 58% and 40% increasing magnitude, respectively, and the storage modulus showed a 58% increase in the glassy state. Meanwhile, the glass transition temperature of the resulting composite was 310?, which was 30? higher than that of pure 2-Bis(4-cyanatophenyl)isopropylidene resin. It was found that the modified nano-SiO2 that possessed good dispersion in the 2-Bis(4-cyanatophenyl)isopropylidene matrix had a significant influence on the mechanical and thermal properties of the 2-Bis(4-cyanatophenyl)isopropylidene resin. All the improvements of properties could be attributed to the effect resulting from the changes of both interface adhesion and dispersibility of filler in matrix.
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