Long-term durability of a water-contaminated quartz-reinforced bismaleimide laminate

L. A. Rodriguez, C. García, Landon R Grace

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

The long-term structural viability of a six-ply water-contaminated quartz fiber-reinforced bismaleimide laminate is investigated via dynamic mechanical analysis and flexural strength assessment over a four-year experimental time frame. Water contamination is achieved via immersion in water at 25°C for short-term (2 weeks and 1 month), long-term (6 months), and very long-term (4 years) duration. Long-term moisture uptake exhibits distinctly non-Fickian behavior. Maximum moisture content exceeds 1.5% by weight after four years of immersion. Laminates exhibit a remarkable resistance to degradation for all exposure durations. Flexural strength decreased by roughly 5% in the worst case. Further, no significant change in glass transition temperature was observed. Scanning electron microscopy revealed no micro-crack formation and a relatively low incidence of fiber-matrix debond. Experimental evidence suggests that quartz fiber-reinforced bismaleimide is a viable option for long-term moisture-prone structural applications at moderate temperatures.

Original languageEnglish (US)
JournalPolymer Composites
DOIs
StateAccepted/In press - 2016
Externally publishedYes

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Polymers and Plastics
  • Materials Chemistry

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