Long-term thermal stability of carbon fibre-reinforced addition-type polyimide composite in terms of compressive strength. (4th March 2019)

• Record Type: Journal Article
• Authors: Kubota, Yuki; Furuta, Takefumi; Aoki, Takuya; Ishida, Yuichi; Ogasawara, Toshio; Yokota, Rikio
• Is Part Of: Advanced composite materials. Volume 28:Number 2(2019)
• Page Start: 115
• Page End: 133
• Publication Date: 2019-03-04
• Subjects: aromatic polyamide -- high-temperature polymer matrix composite -- long-term thermal stability -- compressive strength -- micro buckling; Composite materials -- Periodicals; Reinforced plastics -- Periodicals; Electronic journals; 620.11805
• DOI: 10.1080/09243046.2018.1446124
• Languages: English
• ISSNs: 0924-3046

Abstract

Abstract : A previously developed carbon fibre-reinforced addition-type polyimide composite material was exposed to temperatures of 240, 270 and 300 °C in air for 3000 h to study its long-term stability in terms of its compressive strength. The in-plane shear modulus, compressive failure mode and transverse crack density were also evaluated to determine whether a degradation process induces a decrease in the compressive strength of a high-temperature polymer matrix composite having a laminated configuration of [90/0]4s . The carbon fibre-reinforced polyimide composite exhibited excellent thermal stability in terms of its compressive strength after being subjected to ageing at 240 °C for 3000 h and at 270 °C for 2000 h, with degradation becoming significant at 300 °C. The compressive strength decreased only when the surface degradation caused the 90° plies sandwiching the 0° plies to degrade severely.