A low molecular weight hindered amine light stabilizer (HALS), contains 2, 2, 6, 6-tetramethyl piperidine functional group has been successfully prepared and intercalated into the interlayer region of Mg-Al layered double hydroxides (LDH) via a co-precipitation method to produce HALS-LDH. Furthermore, a series of HALS-LDH/PP nanocomposites were fabricated by dispersing HALS-LDH in poly(propylene) (PP) in a solvent casting route. Through the accelerated aging test method, the morphological properties, the thermal-oxidative degradation and photo-oxidative degradation behavior of HALS-LDH/PP composites were carefully investigated. The results show that the thermal stability of HALS in HALS-LDH was improved compared to that of HALS free of LDH dispersed into PP, and there is no negative effect on the crystallization behavior of PP after the addition of HALS-LDH. Besides, the HALS-LDH significantly enhances synergistically the thermal- and photo-stability of PP compared when LDH platelets CO₃-LDH or HALS are used separately. Under the experimental conditions, a mass loading of HALS-LDH optimized as 4 wt % in respect to PP was found to exhibit an excellent anti-aging performance for potential applications.

已成功制备了含有2，2，6，6-四甲基哌啶官能团的低分子量受阻胺光稳定剂（HALS），并通过共沉淀将其插入Mg-Al层状双氢氧化物（LDH）的中间层区域制备HALS-LDH的方法。此外，通过将HALS-LDH以溶剂流延方式分散在聚丙烯（PP）中，制备了一系列HALS-LDH / PP纳米复合材料。通过加速老化试验方法，仔细研究了HALS-LDH / PP复合材料的形态，热氧化降解和光氧化降解行为。结果表明，与不含LDH分散在PP中的HALS相比，HALS-LDH中HALS的热稳定性有所提高，加入HALS-LDH对PP的结晶行为没有负面影响。此外，与LDH血小板CO相比，HALS-LDH显着协同增强了PP的热稳定性和光稳定性。₃ -LDH或HALS单独使用。在实验条件下，发现相对于PP优化为4 wt％的HALS-LDH的质量负载对潜在的应用显示出优异的抗老化性能。