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首页> 外文期刊>IEEE Transactions on Components and Packaging Technologies >Optimization of Epoxy-Barium Titanate Nanocomposites for High Performance Embedded Capacitor Components
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Optimization of Epoxy-Barium Titanate Nanocomposites for High Performance Embedded Capacitor Components

机译：高性能嵌入式电容器组件的环氧钛酸钡纳米复合材料的优化

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摘要

One of the most promising avenues to meet the requirements of higher performance, lower cost, and smaller size in electronic systems is the embedded capacitor technology. Polymer-ceramic nanocomposites can combine the low cost, low temperature processability of polymers with the desirable electrical and dielectric properties of ceramic fillers, and have been identified as the major dielectric materials for embedded capacitors. However, the demanding requirements of mechanical properties and reliability of embedded capacitor components restrict the maximum applicable filler loading (<50vol%) of nanocomposites and thereby limit their highest dielectric constants (<50) for real applications. In this paper, we present a study on the optimization of the epoxy-barium titanate nanocomposites in order to obtain high performance, reliable embedded capacitor components. To improve the reliability of polymer-ceramic nanocomposites at a high filler loading, the epoxy matrix was modified with a secondary rubberized epoxy, which formed isolated flexible domains (island) in the continuous primary epoxy phase (sea). The effects of sea-island structure on the thermal mechanical properties, adhesion, and thermal stress reliability of embedded capacitors were systematically evaluated. The optimized, rubberized nanocomposite formulations had a high dielectric constant above 50 and successfully passed the stringent thermal stress reliability test. A high breakdown voltage of 89MV/m and a low leakage current of about 1.9times10-11A/cm2 were measured in the large area thin film capacitors
机译：嵌入式电容器技术是满足电子系统中更高性能，更低成本和更小尺寸要求的最有前途的途径之一。聚合物-陶瓷纳米复合材料可以将聚合物的低成本，低温可加工性与陶瓷填料的理想电和介电性能相结合，并且已被确定为嵌入式电容器的主要介电材料。但是，对嵌入式电容器组件的机械性能和可靠性的苛刻要求限制了纳米复合材料的最大可用填充剂含量（<50vol％），从而限制了其在实际应用中的最高介电常数（<50）。在本文中，我们对环氧钛酸钡纳米复合材料的优化进行了研究，以获得高性能，可靠的嵌入式电容器组件。为了在高填充量下提高聚合物-陶瓷纳米复合材料的可靠性，用次生橡胶化环氧树脂对环氧基质进行了改性，在连续的主要环氧相（海）中形成了隔离的柔性域（岛）。系统地评估了海岛结构对嵌入式电容器的热机械性能，附着力和热应力可靠性的影响。经过优化的橡胶纳米复合配方具有高于50的高介电常数，并成功通过了严格的热应力可靠性测试。在大面积薄膜电容器中测得的高击穿电压为89MV / m，漏电流为1.9倍10-11A / cm2

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