Effects of macromolecular silane coupling agent on the mechanical properties of nano-SiO2/cyanate ester nanocomposites
| Autor: | Junping Zhang, Mengmeng Zhang, Hongxia Yan, Qian-Qian Wang, Feng Shuyao |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Nanocomposite
Materials science Polymers and Plastics Scanning electron microscope Mechanical Engineering Composite number Dynamic mechanical analysis Methacrylate Styrene chemistry.chemical_compound chemistry Cyanate ester Mechanics of Materials Materials Chemistry Ceramics and Composites Composite material Glass transition |
| Zdroj: | Journal of Reinforced Plastics and Composites. 33:127-136 |
| ISSN: | 1530-7964 0731-6844 |
| DOI: | 10.1177/0731684413509701 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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