碳/碳复合材料基体用中间相沥青

Mesophase Pitch for Carbon Matrix of Carbon/Carbon Composites

中间相沥青具有高残碳率、高密度、低的密度变化及易石墨化等优点 ,是较理想的碳 /碳 (C/C)复合材料基体前驱体。本文从 C/ C复合材料制备工艺的角度 ,阐述了制备 C/ C复合材料用的中间相沥青的主要特性 ,其中包括中间相沥青的流动性、在碳化过程中的稳定化、微观结构以及中间相沥青基 C/ C复合材料的界面结构。

Mesophase pitch exhibits high carbon yield,high density,minimal density change and easy graphitization,so it is the ideal precursor for the carbon matrix of carbon /carbon ( C/C) composites.Based on the process technology of C/C composites,the main characteristics of mesophase pitch for C/C composites are summarized in this paper,such as flowability,stabi- lization on carbonization,interface in C/C copmosites and microstructure of the mesophase pitch matrix,as well as effects on composites properties.