期刊
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
卷 26, 期 7, 页码 665-668出版社
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/S1005-0302(10)60103-X
关键词
Negative thermal expansion; ZrW2O8; Polyimide; Composite; Coefficient of thermal expansion
资金
- National Natural Science Foundation of China [50372027]
- Natural Science Foundation of Jiangsu Province [BK2003404]
Negative thermal expansion (NTE) ZrW2O8 powders were prepared by step-by-step solid-state reaction with ZrO2 and WO3 powders. The coefficient of thermal expansion (CTE) of the as-prepared ZrW2O8 was around -5.08x10(-6) K-1 at 20-700 degrees C. Different amounts of ZrW2O8 powders were added in BTDA-ODA polyamic acid to form polyimide/ZrW2O8 composites (PI/ZrW2O8). With the increment of ZrW2O8, experimental results show that ZrW2O8 powders can significantly enhance the thermal stability of the composites, and reduce the thermal expansion. A 50 wt pct ZrW2O8 addition can give rise to a 31% reduction of CTE. It is suggested that the PI/ZrW2O8 composites have potential applications in high performance microelectronic devices.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据