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Tensile properties of cristobalite‐filled epoxy resin
Author(s) -
Naito Keishi,
Yoshida Michiyuki,
Adachi Yoshihide,
Kawai Katsuma,
Sakurada Osamu,
Yashiro Kisaragi
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.50410
Subject(s) - ultimate tensile strength , materials science , composite material , cristobalite , fiber , epoxy , fabrication , thermal expansion , medicine , alternative medicine , quartz , pathology
The effect of raising and lowering the temperature on the tensile properties of cristobalite spherical particle‐filled epoxy resin (C PTCL /EP) was investigated, and the fabrication of cristobalite fiber and its fiber‐reinforced plastic (FRP) was attempted. For the C PTCL /EP, the process of raising the temperature above the temperature at which the coefficient of thermal expansion of cristobalite suddenly changes (220°C) and then lowering the temperature to room temperature degraded the matrix and caused tensile residual stress in the matrix; however, interfacial adhesion between the matrix and filler improved. In other words, the tensile strength of C PTCL /EP was not reduced by this process, but rather improved. In contrast, the tensile strength of cristobalite fiber‐filled EP (C FIBER /EP) was significantly lower than the theoretical value owing to cracks in the fiber caused by dunting during fabrication of the fiber. Thus, the fabrication method needs to be further improved.