AC/LDHs插层复合材料的制备及其在挤出发泡成型中的应用

Preparation of a Nano-Composite AC/LDHs by Novel Intercalation-Replacement Processing and Using in Extrusion

以苯甲酸插层改性LDHs纳米粉体为交换前体，采用插层置换的方法，制备出一种AC／LDHs新型纳米复合发泡材料。采用XRD、TG—DTA等手段对新材料进行了表征。结果表明：pH值是影响插层效果的一个关键因素，且pH=4时，插层效果最好。利用pH=4条件下制备的新型插层复合材料在适当条件下进行挤出发泡成型，可以得到孔径为20～40μm左右的泡孔分布均匀的发泡制品。

A novel nano-composite, AC intercalated LDHs, was prepared by the novel intercalationreplacement processing of azodicarbonamide（AC）. The nano-composites were characterized by means of XRD and thermal analyses, pH was one of the key factors for the interlayer. The optimal results were obtained when pH =4. Using by this nano-composite in extrusion,the foams reached about 20- 40μm.