Preparing process on toughening and strengthening cyanate ester with Nano-SiO2

Xue Li Yao, Xiao Yan Ma, Xiao Hong Qu, Yu Xia Qin, Fang Chen

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

SiO2/cyanate ester (CE) nano-composites were prepared in situ polymerization, and three different methods of dispersing nano-SiO2 (attrition treatment, coupling agent surface treatment, highspeed homogeneous shearing) were investigated. Nano-particle dispersion, mechanical and thermal properties of nano-composites under three dispersing methods were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). The characterization results showed that attrition treatment produced nano-composites with more excellent nano-particle dispersion than high-speed homogeneous shearing, however, coupling agent surface treatment couldn't disperse SiO2 in nanometer size range. High-speed homogeneous shearing better improved mechanical and thermal properties of composites, and when nano-SiO2 was 1phr (per hundred resin),the impact strength and the flexural strength of composites were respectively 35.0% and 12.1% higher than pure CE; and when the mass loss of composites was 5%, its degradation temperature improved 23.8°C compared with pure CE. Coupling agent surface treatment decreased the flexural strength and degradation temperature of composites.

Original languageEnglish
Pages (from-to)3-6+11
JournalCailiao Gongcheng/Journal of Materials Engineering
Issue number5
StatePublished - May 2006

Keywords

  • Attrition treatment
  • Coupling agent surface treatment
  • Cyanate ester
  • High-speed homogeneous shearing
  • Nano-composite
  • Nano-SiO

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