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Development of novel high T-g polyimide-based composites. Part II: Mechanical characterisation
Luleå University of Technology, Sweden.
RISE - Research Institutes of Sweden, Swerea, Swerea SICOMP. Luleå University of Technology, Sweden.
Luleå University of Technology, Sweden.
2018 (English)In: Journal of composite materials, ISSN 0021-9983, E-ISSN 1530-793X, Vol. 52, no 2, p. 261-274Article in journal (Refereed) Published
Abstract [en]

In this study, the mechanical performance assessment of a newly developed carbon fibre-reinforced polyimide composite system T650/NEXIMID (R) MHT-R is presented. This system was subjected to a series of mechanical tests at ambient and elevated temperature (320?) to determine basic material properties. Moreover, an additional test was conducted, using a T650/NEXIMID (R) MHT-R laminate in which the fibre sizing was thermally removed prior to laminate manufacturing, to investigate the effect of fibre treatment on mechanical performance. The experimental results indicated that the T650/NEXIMID (R) MHT-R composites along with exceptionally high T-g (360-420?) exhibited competitive mechanical properties to other commercially available polyimide and epoxy-based systems. At elevated temperature, the fibre-dominated properties were not affected whilst the properties defined by matrix and fibre/matrix interface were degraded by approximately 20-30%. Finally, the fibre sizing removal did not affect the tensile and compressive strength, however, the shear strength obtained from short-beam shear test was deteriorated by approximately 15%.

Place, publisher, year, edition, pages
2018. Vol. 52, no 2, p. 261-274
Keyword [en]
Polymer-matrix composites, high-temperature properties, mechanical testing, resin transfer moulding
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-33732DOI: 10.1177/0021998317705706OAI: oai:DiVA.org:ri-33732DiVA, id: diva2:1197808
Available from: 2018-04-14 Created: 2018-04-14 Last updated: 2018-04-14Bibliographically approved

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