Thermal Properties of Low Loss PTFE-CeO2 Dielectric Ceramic Composites for Microwave Substrate Applications

被引：18
|
作者：
Anjana, P. S. [1 ]
Uma, S. [2 ,3 ]
Philip, J. [2 ,3 ]
Sebastian, M. T. [1 ]
机构：
[1] CSIR, Natl Inst Interdisciplinary Sci & Technol, Mat & Minerals Div, Trivandrum 695019, Kerala, India
[2] Cochin Univ Sci & Technol, Dept Instrumentat, Cochin 682022, Kerala, India
[3] Cochin Univ Sci & Technol, STIC, Cochin 682022, Kerala, India
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2010年 / 118卷 / 02期
关键词：
composites; dielectric properties; thermogravimetric analysis; differential scanning calorimetry; thermal properties; FILLED POLYMER COMPOSITES; PHOTOPYROELECTRIC TECHNIQUE; EXPANSION COEFFICIENTS; CONDUCTIVITY; PTFE; TRANSITIONS; PARTICLES; BLENDS; RANGE; HEAT;
D O I：
10.1002/app.31690
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Polytetrafluroethylene (PTFE) composites filled with CeO2 were prepared by powder processing technique. The PTFE is used as the matrix and the loading fraction of CeO2 in the composite varied up to 0.6 volume fraction. The thermal conductivity and coefficient of thermal expansion were studied in relation to filler concentration. The thermal conductivity increased and coefficient of thermal expansion decreased with increase in CeO2 content. For 0.6 volume fraction loading of the ceramic, the composite has a thermal conductivity of 3.1 W/m degrees C and coefficient of thermal expansion 19.6 ppm/degrees C. Different theoretical approaches have been employed to predict the effective thermal conductivity and coefficient of thermal expansion of composite systems and the results were compared with the experimental data. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 118: 751-758, 2010
引用
收藏
页码：751 / 758
页数：8
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