对钛酸钡(BT)纳米粒子进行了表面改性,采用原位聚合法将钛酸钡与聚酰亚胺复合制备了高介电BT/PI复合薄膜,为了进一步提高介电性能,将第三组分炭黑掺入其中,并对其进行了红外光谱、扫描电镜(SEM)分析和介电性能测试.结果表明:与未改性的复合薄膜相比,改性后纳米粒子在基体中分散更加均匀,复合薄膜的介电性能明显提高,可用于制备嵌入式电容中的电介质材料.
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