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液态聚碳硅烷制备含铝碳化硅陶瓷前驱体——聚铝碳硅烷
Authors
余煜玺
张颖
+3 more
杨景明
杨露姣
程璇
Publication date
15 December 2009
Publisher
Abstract
通过液态聚碳硅烷与乙酰丙酮铝反应,合成了一系列的聚铝碳硅烷,考察了原料配比和反应温度的影响。结果显示:改变合成温度或乙酰丙酮铝的加入量,聚铝碳硅烷呈现从液态到固态的转变。增加乙酰丙酮铝的配比或提高合成温度,可增加聚铝碳硅烷中铝的质量分数,在360℃合成的产物中铝的质量分数接近理论值;增加铝的质量分数或提高合成温度,可增大聚铝碳硅烷的分子量及其多分散系数。360℃以下聚铝碳硅烷的数均分子量随着铝的质量分数的增加呈线性增加。红外光谱及核磁共振分析结果均显示,铝元素的引入伴随着Si—H键的消耗,通过AlOx(x=4,5,6)基团使液态聚碳硅烷分子部分交联长大,高铝含量的样品具有较高的交联程度
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Last time updated on 16/06/2016