CAJ | 학술논문

测试了国产T300级碳纤维的单丝和复丝拉伸强度，并用Weibull分布来描述碳纤维单丝平均拉伸强度。采用拉挤工艺制备出国产碳纤维复合线芯，测试了国产碳纤维复合线芯的弯曲强度和短梁剪切强度性能。结果表明：国产T300级碳纤维单丝拉伸强度性能达到东丽T300碳纤维水平，且分散性更小；复丝强度略低。国产T300级碳纤维集束性较差，在拉挤抽纱过程中，容易夹纱和起毛。在纤维体积含量基本相同情况下，国产T300级碳纤维复合线芯力学性能与东丽T700碳纤维复合线芯力学性能相差不大。
측시료국산T300급탄섬유적단사화복사랍신강도，병용Weibull분포래묘술탄섬유단사평균랍신강도。채용랍제공예제비출국산탄섬유복합선심，측시료국산탄섬유복합선심적만곡강도화단량전절강도성능。결과표명：국산T300급탄섬유단사랍신강도성능체도동려T300탄섬유수평，차분산성경소；복사강도략저。국산T300급탄섬유집속성교차，재랍제추사과정중，용역협사화기모。재섬유체적함량기본상동정황하，국산T300급탄섬유복합선심역학성능여동려T700탄섬유복합선심역학성능상차불대。
Single fiber and fiber bundle tensile strengths of Chinese-made carbon fiber were tested and its average single fiber tensile strength was described by the Weibull statistical method.The carbon fiber reinforced composite core was made by pultrusion process with the Chinese-made carbon fiber.The bending and shearing properties of the composite core were studied.Results show that,compared with the Toray T300 carbon fiber from Japan,domestic carbon fiber has almost the same average single fiber tensile strength,lower discrete property and a little lower average fiber bundle tensile strength.The aggregation property of the domestic carbon fiber is not good enough.Carbon fiber yarns were nipped and fluffed when being drawn out.No significant difference can be found from the mechanical properties of the composite cores made with the domestic carbon fiber and the Toray T700 carbon fiber from Japan.