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unknown
过氧化苯甲酰在液态聚碳硅烷交联中的应用
Authors
丁马太
何国梅
+5 more
余兆菊
夏海平
李然
詹俊英
黄木河
Publication date
20 December 2009
Publisher
Abstract
聚碳硅烷热解前的交联对于提高其最终陶瓷产率至关重要。研究了过氧化苯甲酰(BPO)引发液态超支化聚碳硅烷(HBPCS)的交联反应对于陶瓷产率的影响。FT-IR和GPC证实,添加为0.5%~2.0%(质量分数,下同)的BPO,即可在80~140℃下引发HBPCS交联;在考察的实验条件下,提高交联温度、延长反应时间或增加BPO用量,均可提高HBPCS交联程度。BPO用量为2.0%时,HBPCS交联样品在1000℃下的陶瓷产率高达65%,比未加BPO的提高25%
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Last time updated on 16/06/2016