Effect of alumina addition to resin on the fiber matrix interfacial shear strength of carbon fiber reinforced polyamide resin

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  • 炭素繊維強化ポリアミド樹脂の繊維樹脂界面せん断強度に及ぼすマトリックス樹脂へのアルミナ添加の影響
  • タンソ センイ キョウカ ポリアミド ジュシ ノ センイ ジュシ カイメン センダン キョウド ニ オヨボス マトリックス ジュシ エノ アルミナ テンカ ノ エイキョウ

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Al_2O_3 with different particle sizes were added to the polyamide 6 resin (PA6), and its crystallinity, density, and coefficient of thermal expansion were measured. To evaluate fiber matrix interfacial shear strength, microdroplet tests were conducted using Al_2O_3 added PA6 and carbon fibers. The improvement mechanism of interfacial shear strength by the addition of Al_2O_3 to PA6 was clarified in this study. The higher the elastic modulus of the matrix, the greater the force with which the resin tightens the fibers. In order to obtain higher interfacial shear strength, it is effective to use a matrix resin with a higher elastic modulus.

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