【摘要】 在大气条件下使国产芳纶Ⅲ接受电子束辐射处理,研究了不同辐射剂量对芳纶Ⅲ表面元素组成、表面形貌、热性能、力学性能以及对环氧树脂的吸附能力的影响。结果表明,电子束辐射对芳纶Ⅲ的表面有刻蚀作用,随辐射剂量的增加,芳纶Ⅲ表面氧含量呈现出先升高后降低的趋势;当辐射剂量为270 k Gy时,芳纶Ⅲ的氧含量出现最大值,此时芳纶Ⅲ的热性能、力学性能和对环氧树脂的吸附性能皆最优,其中断裂强度和对环氧树脂的吸附能力分别提高了29.91%和61.90%。更多还原

【Abstract】 Domestic aramid fiber Ⅲ( DAF-Ⅲ) was treated by electron beam( EB) radiation in the atmosphere. Surface elements composition and surface topography,the thermal and mechanical properties as well as the ability to absorb epoxy resin of DAF-Ⅲ fiber,were studied after EB radiation with different doses.The results suggest that EB radiation could etch the surface of DAF-Ⅲ fiber and with the rising of the radition dose,the oxygen content on the surface of the fiber first increases and then decreases. Besides the maximum of the surface oxygen content,the most excellent performances of DAF-Ⅲ fiber in the thermal and mechanical properties and the adsorptive capacity for epoxy resion are achieved when the rddition dose is 270 k Gy,upon which the breaking strength and the adsorptive capacity for epoxy resion of the treated DAF-Ⅲ increase by29. 91%and 61. 90%,respectively,compared with that of untreated one.更多还原