功能材料
功能材料
공능재료
JOURNAL OF FUNCTIONAL MATERIALS
2015年
15期
15148-15152,15156
,共6页
廖潘兴%黄小忠%杜作娟%王亚玲%施旸谷%许慎微%邹杨君%李志元
廖潘興%黃小忠%杜作娟%王亞玲%施旸穀%許慎微%鄒楊君%李誌元
료반흥%황소충%두작연%왕아령%시양곡%허신미%추양군%리지원
铍%聚碳硅烷%含铍聚碳硅烷%合成工艺
鈹%聚碳硅烷%含鈹聚碳硅烷%閤成工藝
피%취탄규완%함피취탄규완%합성공예
beryllium%polycarbosilane%polyberylliumocarbosilane%synthesis process
利用 PCS 和 Be(acac)2合成了一系列含铍聚碳硅烷(PBeCS),通过 FT-IR、NMR、GPC、XPS 等检测方法考察了 Be 含量、反应温度、反应时间对PBeCS 的影响.结果显示,PCS 和 Be(acac)2的反应主要通过消耗 PCS 的 Si—H 键来完成;PBeCS 从Be(acac)2中引入了烯醇式结构:CH 3 CO CH??C O;在270℃左右,Be 含量小于0.8%(质量分数)时,PBeCS 的分子量随着 Be 含量的增加而增大,分布变宽,但 Be 含量在0.8%~1.0%(质量分数)之间时,PBeCS 的分子量随着 Be 含量的增加而迅速减少,分布变窄;提高反应温度、延长反应时间可以使 PBeCS 的分子量增大,分布变宽;PBeCS 的 C 元素和 O 元素的含量的增加来自Be(acac)2.
利用 PCS 和 Be(acac)2閤成瞭一繫列含鈹聚碳硅烷(PBeCS),通過 FT-IR、NMR、GPC、XPS 等檢測方法攷察瞭 Be 含量、反應溫度、反應時間對PBeCS 的影響.結果顯示,PCS 和 Be(acac)2的反應主要通過消耗 PCS 的 Si—H 鍵來完成;PBeCS 從Be(acac)2中引入瞭烯醇式結構:CH 3 CO CH??C O;在270℃左右,Be 含量小于0.8%(質量分數)時,PBeCS 的分子量隨著 Be 含量的增加而增大,分佈變寬,但 Be 含量在0.8%~1.0%(質量分數)之間時,PBeCS 的分子量隨著 Be 含量的增加而迅速減少,分佈變窄;提高反應溫度、延長反應時間可以使 PBeCS 的分子量增大,分佈變寬;PBeCS 的 C 元素和 O 元素的含量的增加來自Be(acac)2.
이용 PCS 화 Be(acac)2합성료일계렬함피취탄규완(PBeCS),통과 FT-IR、NMR、GPC、XPS 등검측방법고찰료 Be 함량、반응온도、반응시간대PBeCS 적영향.결과현시,PCS 화 Be(acac)2적반응주요통과소모 PCS 적 Si—H 건래완성;PBeCS 종Be(acac)2중인입료희순식결구:CH 3 CO CH??C O;재270℃좌우,Be 함량소우0.8%(질량분수)시,PBeCS 적분자량수착 Be 함량적증가이증대,분포변관,단 Be 함량재0.8%~1.0%(질량분수)지간시,PBeCS 적분자량수착 Be 함량적증가이신속감소,분포변착;제고반응온도、연장반응시간가이사 PBeCS 적분자량증대,분포변관;PBeCS 적 C 원소화 O 원소적함량적증가래자Be(acac)2.
The precursors of polyberylliumcarbosilane (PBeCS)were prepared by the reaction of polycarbosi-lanes (PCS)and beryllium acetylacetonate [Be(acac)2 ].The influence of beryllium content,reaction tempera-ture and reaction time to the precursors was measured by FT-IR,NMR,GPC,XPS et al.The results shown that the completion of the reaction of PCS and Be(acac)2 was based on the consumption of Si—H bonds,and the precursors had a the enol form structure CH 3 CO CH??C O imported by Be(acac)2 ,and the molecular weight and polydispersity of PBeCS were increased after increasing beryllium content while the content less than 0.8wt%,but decreased at a high speed while its content was 0.8-1.00wt% at about 270 ℃,and the molecular weight and polydispersity of PBeCS were also increased while increasing the reaction temperature and the reac-tion time,and the increasing of carbon and oxygen content in the PBeCS was introduced from Be(acac)2 .