現場重合型フェノキシ樹脂を母材とする連続繊維強化複合材料の引張強度特性に及ぼす内部欠陥及び母材樹脂の重合度の影響

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  • Effect of voids and degree of polymerization of matrix on tensile strength properties of continuous fiber reinforced composite materials with in-situ polymerizable phenoxy resin

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<p>Tensile strength properties in the transverse direction of carbon fiber reinforced thermoplastic (CFRTP) laminates with in situ polymerizable phenoxy resin were evaluated. The unidirectional [90]14 laminates were formed using the prepreg, NS-TEPreg. By changing the conditions of fabricating CFRTP laminates, the void content in the laminates and the degree of polymerization of the matrix resin were varied. As the results of tensile tests and image analysis, it was revealed that when the void content inside the laminates is 0.5% or less, the influence of the void on tensile strength properties becomes limited. Also, as the results of measuring the average molecular weight of CFRTP laminates, it became clear that the transverse tensile strength σbT and transverse failure strain εbT increase as the average molecular weight of the matrix resin increases.</p>

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