Preparation, characterization and properties of amine-functionalized silicon carbide/polyimide composite films

Yongan Niu, Xin Zhang, Jiupeng Zhao, Yanqing Tian, Yao Li, Xiangqiao Yan

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

High performance amino-functionalized silicon carbide/polyimide (m-SiC/PI) composite films were prepared using a straightforward polycondensation, and the nanoparticles (NP) obtained were modified using 3-aminopropyl-trimethoxysilane. The presence of amine functional groups made dispersions of m-SiC NP in dimethylacetamide more homogeneous and uniform. Their structures and stabilities were investigated using X-ray diffraction, scanning electron microscopy and zeta-potential analysis. The thermal stability and the tensile strength of the m-SiC/PI composite films improved with increasing m-SiC NP content, for example the inclusion of 3 wt% m-SiC NP increased the tensile strength and Young's modulus by 41.1% and 40.1%, respectively. The morphology of the cross-section revealed that breakage within these composite films was the result of ductile fracture, whereas for pure PI film it was caused by brittle fracture.

Original languageEnglish (US)
Pages (from-to)28456-28462
Number of pages7
JournalRSC Advances
Volume4
Issue number54
DOIs
StatePublished - 2014

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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