摘要：通过正交试验分析,研究合成锂基蒙脱石的最佳工艺条件,并研究锂基蒙脱石在铸型涂料中的应用性能。试验研究结果表明,以碳酸锂和草酸的混合液作为改型剂,合成锂基蒙脱石的最佳工艺条件为:改型剂的用量6%,反应温度60℃,反应时间1h。锂基蒙脱石应用到铸型涂料中取得了良好的效果,涂料的粘度、悬浮性和抗热震稳定性都有较大提高。结果表明:锂基蒙脱石在铸涂料中的用量为2%时效果最佳。

关键词： 锂基蒙脱石；铸型涂料；碳酸锂；草酸；正交试验

Abstract: The synthesis of Li-montmorillonite which used in foundry coating was studied. The orthogonal tests was used to study the optimum conditions in the process of synthezing Li-montmorillonite. The dosage of the modifying agency is 6 %, the reaction temperature is 60 ℃, the reaction tim e is 1h. The Li-montmorillonite was used in the mold paint, whose viscosity. suspensibility and thermal stability increase. The results show that the optimum Li-montmorillonite dosage is 2 %. 

Key ords: Li-montmorillonite; mold paint; orthogonal test