Preparation and Properties of R-122 - SiO2 NanocompositeReport as inadecuate




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A complex material of dicyclopentadiene dioxide epoxy(R-122) with nano-silica was prepared, using the method of supersonic dispersion and High-speed shearing . The mechanical properties,thermal stability and morphology of the composite were investigated. The results indicated that the mechanical properties of impact strength be improved greatly,the largest impact strength of 36.57 J-M is obtained, when the content of nano-silica is 4%,it is 252% higher than that of the pure resin’s. The complex shape of the fracture is scanned by SEM, and a fish-scale liked surface is observed as it has more new surface, a more impact energy can be absorbed. TGA shows that the thermal stability of the composite has been significantly improved compared with the pure resin. The weight loss is reduced by 25% at temperature 400 ℃, when the content of nano-silica is 4%.

KEYWORDS

Dicyclopentadiene dioxide epoxy(R-122); SiO2 ; Nanocomposite ; Impact strength

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Author: Wen-ping Feng, Zai-qian Yu, Yang Zhao, Long Zhang

Source: http://www.scirp.org/



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