【摘要】 分别采用煅烧再生法（Calcination reduction）和离子交换法（Ion exchange）对工业MgAl-CO₃-LDH进行有机改性，构筑了CA@LDH-cr、CA@LDH-ie这两种肉桂酸插层层状双金属氢氧化物（LDH）。借助XRD、SEM、FTIR、UV-Vis和TG等表征手段对LDH的晶型结构、表观形貌、物质组成、紫外吸收性能及热稳定性进行了表征对比，进一步将其与PP材料熔融共混，并对复合材料的紫外屏蔽性能进行了评价。结果表明，通过煅烧再生法和离子交换法，工业MgAl-CO₃-LDH层板间的CO₃^2-成功地被肉桂酸根取代，且离子交换法改性的CA@LDH-ie晶型结构更完整，紫外吸收能力更好，由其制备的PP复合材料具有很强的紫外屏蔽性能。更多还原

【Abstract】 The industrial hydrotalcite MgAl-CO₃-LDH is organically modified by ion exchange and calcination reduction, respectively, and two kinds of CA intercalated hydrotalcites, CA@LDH-ie and CA@LDH-cr are constructed. By means of XRD, SEM, FTIR, UV-Vis and TG, the crystal structure, apparent morphology, material composition, UV absorption performance and thermal stability of the two LDHs are compared and characterized. It is further melt blended with PP material, and the UV shielding properties of the composite are evaluated. The results show that the CO₃^2- between the layers of industrial hydrotalcite is successfully replaced by cinnamate by ion exchange and calcination regeneration. Moreover, CA@LDH-ie modified by ion exchange method has more complete crystal structure and better UV absorption ability, and the prepared PP composites has strong UV shielding properties.更多还原