| 학회 |
한국재료학회 |
| 학술대회 |
2021년 가을 (11/24 ~ 11/26, 경주 라한호텔) |
| 권호 |
27권 2호 |
| 발표분야 |
A. 전자/반도체 재료 분과 |
| 제목 |
Dependence of Dielectric Properties on the MgO content of MgO/Semi-Crystalline Polymer composites at Microwave Frequencies |
| 초록 |
The effects of MgO content on the microwave dielectric properties of MgO/ semi-crystalline polymers (polypropylene(PP) and polytetrafluoroethylene (PTFE)) composites were investigated. Composites of MgO filler with volume fraction 0.1 to 0.5 dispersed on two polymer matrices were prepared by the hot-molding technique. MgO powders were calcined at 950◦C for 4 h, and heat-treated again at 1440◦C for 4 h and then milled for 24 h. The crystallinity of the composites was controlled by the different cooling rates and/or annealing conditions. The dielectric constant(K) and dielectric loss(tanδ) of the composites were dependent on the MgO content and crystallinity of composites. With increasing MgO content, K of the composites increased due to the higher K of MgO(9.61) than those of PP(3.05) and PTFE(2.02). For the prediction of effective K of the composite, several theoretical models were employed and the predicted values were compared with experimental data. |
| 저자 |
Jae Young Jeong1, Eung Soo Kim2
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| 소속 |
1Department of Advanced Materials Engineering, 2Kyonggi Univ. |
| 키워드 |
Microwave dielectrics properties; MgO/Polymer(PP; PTFE); degree of crystallinity; quality factor
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| E-Mail |
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