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引言 碳纤维的抗拉强度(σ_T)、杨氏谟量(E)和断裂伸长(ε)是度量其力学性能的三项主要指标。目前实验室提供碳纤维的模量已达到理论值的80％左右,工业产品也达到25-40％。然而,实验室提供碳纤维的σ_T仅为理论值的4-25％,工业品为2-13％,差距十分悬殊。应当指出,高模型碳纤维的模量高达8.16×10~6公斤/厘米~2(实验室数据),已超过石墨晶须的模量值(7.15×10民~6公斤/厘米~2),但是,高强型碳纤维的强度虽然可达
INTRODUCTION Tensile strength (σ_T), Young’s modulus (E) and elongation at break (ε) of carbon fiber are the three main indexes to measure their mechanical properties. At present, the laboratory provides carbon fiber modulus has reached about 80% of the theoretical value, industrial products also reached 25-40%. However, the laboratory provides carbon fiber σ_T only theoretical value of 4-25%, 2-13% of industrial products, the gap is very poor. It should be noted that the modulus of the high-modulus carbon fiber is as high as 8.16 × 10-6 kg / cm 2 (laboratory data) and exceeds the modulus value of graphite whiskers (7.15 × 10-6 kg / cm -2) but Although the strength of high-strength carbon fiber reachable