Preparation method of jute fiber reinforced polylactic acid composite material

The invention discloses a preparation method of a jute fiber reinforced polylactic acid composite material. The method is characterized by comprising the following steps: pulverizing fibers, scouring, carrying out silicon dioxide sol treatment, and preparing a modified jute fiber reinforced polylactic acid composite material. According to the method disclosed by the invention, the fibers are pulverized and then are modified, so that uniform scouring is facilitated; meanwhile, the production of hydrophilic cross sections caused by interruption during mixed granulation of the fibers and polylactic acid can be effectively reduced, so that the dispersibility and the interface compatibility of the fibers in the polylactic acid are improved; through silicon dioxide sol surface modification treatment, a rough hydrophobic surface is obtained; therefore, the hydrophobic surface and a polylactic acid (PLA) interface have good compatibility, and a good mechanical nail-anchor effect can be produced, thereby improving the