Premium
Flexural fatigue behavior of a pultruded basalt fiber reinforced epoxy plate subjected to elevated temperatures exposure
Author(s) -
Wang Zike,
Yang Zhaohui,
Yang Yongming,
Xian Guijun
Publication year - 2018
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.24124
Subject(s) - materials science , composite material , pultrusion , flexural strength , epoxy , basalt fiber , curing (chemistry) , heat deflection temperature , dynamic mechanical analysis , glass fiber , fiber , izod impact strength test , fibre reinforced plastic , polymer , ultimate tensile strength
In the present article, effects of elevated temperature treatment on the flexural fatigue behavior of a pultruded basalt fiber reinforced epoxy plates (BFRPs) were investigated. Elevated temperature treatment conditions were set as 150 and 250°C for 0.5, 1, and 2 h in an oven. The static testing results revealed that elevated temperature treatment only brings in slight degradation in the flexural properties of the BFRP. However, the short beam shear strength (SBS) was deteriorated significantly. Dynamic mechanical thermal analysis (DMTA) results indicates that elevated temperature treatment at 150°C mainly shows a post‐curing effect on the resin matrix, while elevated temperature treatment at 250°C leads to fiber debonding and decomposition of the resin. The S‐N curves of BFRP (untreated and treated 150 and 250°C for 1 h) show that the elevated temperature treatment decreased the fatigue lives of BFRP remarkably, especially under high strain ratio. As indicated, elevated temperature treatment accelerates the growth of the damages due, mainly, to the deteriorated fiber–resin bonding property and increased void content. POLYM. COMPOS., 39:1731–1741, 2018. © 2016 Society of Plastics Engineers