研究了Al2O3流延浆料中聚乙烯醇缩丁醛(PVB)的溶解性、成膜性及其对氧化铝粉体的分散作用.实验结果表明,PVB溶解于二元混合溶剂乙醇/二甲苯,当乙醇含量为60%时,粘度最低,溶解性最佳;PVB用作分散剂,当用量为0.5%,剪切速率为50 s-1时,系统粘度从868 mPa·s降到17 mpa·s;PVB用作粘结剂,用量为8%时,流延生片无明显缺陷,流延浆料粘度较低,成膜性能好.
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