Method for improving carbon content test precision of carbon fiber

The invention discloses a method for improving the testing precision of the carbon content of carbon fibers, and belongs to the field of material testing. According to the present invention, the elemental analyzer is adopted as the test instrument, the vanadium pentoxide is adopted as the catalyst, the sufficient combustion of the carbon fiber is ensured by controlling the ratio of the carbon fiber to the catalyst and the combustion condition, the standard deviation error of the final carbon content test result of the carbon fiber is not more than 0.15%, and the test precision is significantly improved compared with the prior art. The method is particularly suitable for testing the carbon content of the high-carbon-content carbon fiber. 本发明公开了一种提高碳纤维含碳量测试精度的方法，属于材料测试领域。本发明利用元素分析仪为测试仪器，采用五氧化二钒作为催化剂，通过控制碳纤维与催化剂的配比以及燃烧条件，确保了碳纤维的充分燃烧，最终碳纤维含碳量测试结果的标准偏差误差不大于0.15%，相比于现有技术，本发明的测试精度显著提升。本发明尤其适用于高含碳量碳纤维的含碳量测试。