Effect of Particle Size on Structure and Dielectric Properties of 0-3 PMN/EP Composite

Abstract:

0-3 PMN/EP composites were prepared with different PMN particle size of powder A(100~154μm), B(74~100μm), C(66~74μm), D(45~66μm) , E(7~35μm) and F(0.15~18μm) by resin casting method. Particle size has great effect on property of PMN/EP composite. SEM analysis indicates that PMN particles with small size dispersed more uniformly in epoxy resin. The dielectric constant and dielectric loss of 0.1PMN/0.9EP and 0.3PMN/0.7EP composites vary a little with the particle size increasing, but dielectric constant and dielectric loss of 0.4PMN/0.6EP increase rapidly. Dielectric frequency characteristics analysis suggest that the variation trend of dielectric constant with different particle size at frequency of 103～106 Hz are almost similar in 0.3 PMN/0.7EP composites, but the dielectric constant of 0.4PMN/0.6EP composite with larger particle size drops remarkably with the frequency increase.

• Periodical: Applied Mechanics and Materials (Volumes 44-47)
• Pages: 4181-4185
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.44-47.4181
• Online since: December 2010
• Authors: Min Xian Shi, Zhi Xiong Huang, Yan Qin, Hui Min He
• Keywords: Ceramic Particle Size, Dielectric Property, Epoxy Resin Composite, Lead Magnesium Niobate-Lead Zirconate-Lead Titanate

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