Preparation and Modification of Mg-Al-Hydrotalcite
The preparation and microwave modification of Mg-Al-hydrotalcite were studied.The effect of modification temperature,modification time,titanate dosage etc factors on the activation index were investigated through orthogonal experiment.The optimum conditions for modification include titanate dosage of 5 ％,modification temperature of 75 ℃,modification time of 30 min.The performance test were carried out which pre and post modification of Mg-Al-hydrotalcite added to PVC.Experimental result showed that Mg-Al-hydrotalcite could improve the thermal stability and processing property of PVC,modified Mg-Al-hydrotalcite had a better performance with obvious fire retardation and smoke suppression effects.
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