作　　者： ; ; ; ;

机构地区： 哈尔滨工业大学化工学院

出　　处： 《宇航学报》 2009年第5期2068-2072,共5页

摘　　要： 由于T300与国产碳纤维的性能有很大差异,其中包括纤维本体的差异和涂层的差异。主要研究了两种纤维本体强度的差异。通过对两种纤维本体单丝拉伸强度的测试和W e ibu ll统计方法分析可知,国产碳纤维要比T300的单丝拉伸强度大,稳定性较好。X射线衍射(XRD)分析表明T300纤维微晶尺寸较小并且石墨化程度比国产碳纤维差。元素分析显示,T300中N元素含量超过国产碳纤维。结果表明,微晶尺寸和纤维中N元素含量是影响碳纤维强度的重要因素。 In the paper, the differences of unsized T300 and Chinese carbon fibers were studied. The monofilament tensile strengths of the two types of carbon fibers were tested and analyzed by Weibull statistical method. The result showed that the tensile strength of Chinese carbon fibers was higher than that of T300 and the stability of Chinese carbon fibers was better. X-ray diffraction（ XRD ） patterns showed that the size of minicrystal of T300 was smaller. The degree of graphitization was lower than Chinese carbon fibers. It was also found that the content of N element was less than Chinese carbon fibers in the result of X-ray photoelectron spectroscopy （XPS）. So it can be concluded that the size of minicrystal and content of N element can influence the tensile strength of carbon fiber directly.

关 键 词： 碳纤维 拉伸强度 统计方法 射线衍射 射线光电子能谱

领　　域： [一般工业技术]