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通过单丝拉伸试验方法对国产碳纤维的单丝拉伸性能进行系统测试,并采用Weibull分布函数对拉伸强度进行统计分析。结果表明,国产碳纤维的单丝拉伸性能指标与东丽T700级和台丽TC36S型碳纤维仍存在较大差距。扫描电子显微镜SEM分析说明,东丽T700级碳纤维表面光滑平整,台丽TC36S型碳纤维表面有较浅沟槽,国产碳纤维单丝表面沟槽较宽、较深,表面结构的特点可能是导致国产碳纤维拉伸强度较低的主要原因。
The monofilament tensile properties of domestic carbon fiber were systematically tested by monofilament tensile test method, and the tensile strength was statistically analyzed by Weibull distribution function. The results show that there is still a long way to go between the tensile properties of monofilament and the T700 grade of Toray and the TC36S carbon fiber of Tai Li. Scanning electron microscopy SEM analysis shows that Toray T700 grade carbon fiber surface smooth flat, TCL-TC36S-type carbon fiber surface has shallow grooves, domestic carbon fiber monofilament surface groove wide, deep, the surface structure may result in domestic carbon fiber The main reason for lower tensile strength.