螺旋形碳纤维手性吸收剂的制备及其生长过程研究  

Preparation of coiled chiral carbon fiber radar absorber and growth process of the coiled carbon fibers

作　　者：赵东林[1] 李怀玉[1] 沈曾民[1] 

机构地区：[1]北京化工大学化工资源有效利用国家重点实验室,碳纤维及复合材料研究所,北京100029

出　　处：《功能材料》2007年第A08期2942-2945,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目（50672004）：北京市科技新星计划资助项目（H020821280120）

摘　　要：用基板法以乙炔为碳源，镍板为催化剂，PCI3为助催化剂，通过化学气相沉积制备螺旋形碳纤维手性吸收剂，反应设备为卧式气相沉积炉。制备的工艺参数为：反应温度650~700℃，氩气流量20~40ml／min，乙炔气流量20~30ml／min，氢气流量50~70ml／min，PCI3流量为0．03～0．05ml／min。为了研究螺旋形碳纤维的生长过程和生长机理，详细研究了螺旋形碳纤维不同生长阶段的微观结构和形貌，探讨了螺旋形碳纤维的生长机理，螺旋形碳纤维是一种非常有发展前景的手性吸收剂和吸波材料。The coiled carbon fibers were obtained by Ni catalyzed pyrolysis of acetylene containing a small amount of PCl3. The production of the coiled carbon fibers in the present research was conducted in a horizontal tubular reactor. The reaction condition used are as follows： reaction temperature 650-700℃, reaction time lh, hydrogen 50-70 ml/min, argon 20-40 ml/min, acetylene 20-30 ml/min, PCI3, 0.03-0.05 ml/min. In order to investigate the whole growth process and the growth mechanism of the coiled carbon fibers, the morphologies of the coiled carbon fibers at different growth stages were studied in detail. The morphologies of the coiled carbon fibers at different reaction times under standard condition were analyzed. And a whole image of the coiled carbon fibers growth was shown in the present research work. The growth mechanism of the coiled carbon fibers was analysed. The coiled carbon fibers are good chiral absorbers and radar absorbing materials.

关 键 词：螺旋形碳纤维 化学气相沉积 手性吸收剂 吸波材料 

分 类 号：TQ342.742[化学工程—化纤工业]