In order to impart the leather with efficient flame retardancy, MgAl layered double hydroxide nanomaterial was synthesized by using bio-based caprolactam modified casein as the template (Temp@MgAl-LDH) via coprecipitation method, then it was blended with modified casein emulsion and applied as flame retardant in leather finishes. By tuning the size of the biomass template, MgAl-LDH was successfully grown on the template. The structure and morphology of Temp@MgAl-LDH were characterized by XRD, XPS, SEM, and TEM, and it was proved that the crystal structure of Temp@MgAl-LDH was complete, and the lamellae also grew well on the surface of the casein micelle. In addition to this, the result of the limit oxygen index (LOI) and the cone calorimeter (CONE) on finished leather illustrated that the flame retardancy of leather increased with the increase of Temp@MgAl-LDH content. When the content of the Temp@MgAl-LDH was 5%, LOI of leather can reach by 28.5%, and smoke density decreased obviously after introducing Temp@MgAl-LDH. This as-prepared composite will be a good candidate as green flame retardant or smoke suppressant that can be used in adhesives, coatings, and other fields.

为了赋予皮革有效的阻燃性，以生物基己内酰胺改性酪蛋白为模板（Temp @ MgAl-LDH）经共沉淀法合成了MgAl层状双氢氧化物纳米材料，然后与改性酪蛋白乳液共混并应用。在皮革饰面中用作阻燃剂。通过调节生物质模板的大小，MgAl-LDH成功地在模板上生长。用XRD，XPS，SEM和TEM对Temp @ MgAl-LDH的结构和形貌进行了表征，证明Temp @ MgAl-LDH的晶体结构完整，片层在表面上也生长良好。酪蛋白胶束。除此之外，成品皮革的极限氧指数（LOI）和锥形量热仪（CONE）的结果表明，皮革的阻燃性随Temp @ MgAl-LDH含量的增加而增加。当Temp @ MgAl-LDH含量为5％时，皮革的LOI可以达到28.5％，引入Temp @ MgAl-LDH后烟气密度明显降低。这种制备的复合材料将是绿色阻燃剂或抑烟剂，可以用于粘合剂，涂料和其他领域，是很好的选择。