以聚硅碳硅烷和乙酰丙酮铝为原料,在反应装置的裂解柱中加入填料,在常压下合成了聚铝碳硅烷.结果表明:添加填料使合成聚铝碳硅烷的时间缩短46%,聚铝碳硅烷的从1008增大到2436,分子量的分布变窄,-Si-Si-键的含量低;在N2气氛中,在400℃以下失重减少,在1200℃陶瓷的产率从65%提高到69%;加入填料可促进-Si-Si-链转化为-Si-C-Si-链,制备出的聚铝碳硅烷纤维在预氧化过程中氧的增重少,预氧化烧成后得到的Si-Al-C-O连续纤维强度为2.1 GPa,在Ar中1800℃烧结可得到致密的SiC(Al)纤维.纤维的结晶行为与不加填料时的类似.
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