Effect of microstructure on the mechanical properties of PAN-based carbon fibers during high-temperature graphitization
Effect of microstructure on the mechanical properties of PAN-based carbon fibers during high-temperature graphitization
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DOI：
10.1007/s10853-008-2633-y
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发表时间：
2008-06-01
影响因子：
4.5
通讯作者：
Zhu, Zhenping
中科院分区：
文献类型：
--
作者：
Liu, Fujie;Wang, Haojing;Zhu, Zhenping
用拉曼光谱和X射线衍射仪研究了PAN基碳纤维的微观结构随热处理温度(1,800-2,800℃，拉伸0%)的变化。随着热处理温度的升高，微晶尺寸(L(A)、L(C))和择优取向度(G)增大，而微晶间距(d(002))减小。R(S)和R(C)值均下降，且R(S)下降更快。这意味着碳纤维的皮芯度增加。并对其力学性能与显微组织之间的关系进行了详细的探讨。
The change of microstructure of PAN-based carbon fibers has been studied as a function of heat-treatment temperature (1,800-2,800 C, stretching 0%) by Raman spectroscopy and X-ray diffraction. With increasing heat-treatment temperature, both the crystallite size (L (a), L (c)) and the degree of preferred orientation (g) increase, while the crystallite interlayer spacing (d (002)) decreases. The values of both R (s) and R (c) decrease, while R (s) decreases more quickly. It implies that the degrees of skin-core of the carbon fibers increase. The relationship between mechanical properties and microstructure of the variants is also explored in detail.