Flame-retardant polylactic resin composition and preparation method thereof

The invention relates to the technical field of polylactic resin. The polylactic resin comprises the following components in parts by weight: 80-100 parts of polylactic resin; 0.5-3 parts of a flame-retardant polymer additive; the structural formula of the flame-retardant polymer additive is as follows: # imgabs0 #, wherein n is a positive integer, and R is H, F or CF3. The synthesis method of the flame-retardant polymer additive is simple to operate, mild in condition, simple in raw material source and suitable for large-scale production; the addition amount of the flame retardant is very low, only 0.625-3.75 wt% of the flame retardant can make the polylactic acid composite material reach the UL-94V-0 level flame retardant standard, and excellent flame retardant performance is shown. 本发明涉及聚乳酸树脂技术领域，包括以下按重量份计算的各组分：聚乳酸树脂:80-100份；阻燃高分子添加剂:0.5-3份；所示阻燃高分子添加剂的结构式如下：#imgabs0#其中n为正整数，R为H，F或者CF3。该阻燃高分子添加剂的合成方法操作简单、条件温和，原料来源简单,适合大规模生产；该阻燃剂的添加量非常低,仅0.625-3.75wt％就可以使聚乳酸复合材料达到UL-94V-0级阻燃标准，显示出优异的阻燃性能。