高温热处理对PAN基炭纤维抗氧化性的影响  

Influence of high-temperature heat treatment on the oxidation inhibition of PAN-based carbon fibers

作　　者：周蔚虹[1] 张红波[2] 魏新莉[1] 

机构地区：[1]中南林业科技大学材料科学与工程学院,湖南长沙410004 [2]中南大学粉末冶金国家重点实验室,湖南长沙410083

出　　处：《兵器材料科学与工程》2008年第4期23-26,共4页Ordnance Material Science and Engineering

基　　金：国家自然科学基金项目(50082002);中南林业科技大学引进高层次人才科研启动项目(101-0302)

摘　　要：C/C复合材料的氧化性能受增强炭纤维和基体炭所控制。将几种PAN基炭纤维进行高温热处理,然后将其与原丝进行对比氧化实验,结果表明,高温热处理后PAN基炭纤维的氧化速率降低了。X射线衍射分析、扫描电子显微分析和激光拉曼光谱分析等微观结构分析的结果表明,高温热处理可改善PAN基炭纤维的石墨微晶结构,从而提高炭纤维的抗氧化能力。Oxidation behavior of C/C composites is controlled by reinforcing carbon fibers and carbon matrix. PAN-based carbon fibers （CF） were high-temperature heat treated. Oxidation behavior of the untreated and treated PAN-based CF were studied by comparison test of oxidation. The results show that high-temperature heat treatment can reduce the oxidation rate of CF. The microstructure of the CF was studied by using XRD,SEM and Raman analysis.The results show that high-temperature heat treatment can improve graphite crystal structure of PAN-based CF,which results in improvement of the oxidation inhibition of the CF.

关 键 词：高温热处理 氧化实验 微观结构 石墨微晶结构 抗氧化能力 

分 类 号：TB331[一般工业技术—材料科学与工程]