Preparation method of straw powder filled PP composite

The invention discloses a preparation method of a straw powder PP composite. The preparation method comprises the following step of filling PP with straw powder through a blending and hot melt extrusion method to prepare the straw powder filled PP composite, wherein a filler is prepared from the following components in parts by weight: 65-75 parts of polypropylene, 25-35 parts of straw powder, 0-12 parts of a compatilizer, 0-3 parts of a coupling agent and 3-6 parts of liquid paraffin. By adopting the production method, a twin-screw extruder is adopted to blend materials, and an extruded material strip is cooled by cooling water and is dried, pelletized and packaged. According to the preparation method provided by the invention, the fill is filled with the straw powder through the hot melt extrusion method, and thus the straw powder filled PP composite is obtained. 本发明公开了种秸秆粉PP复合材料的制备方法，利用秸秆粉通过共混熔融挤出法填充PP，制备秸秆粉填充PP复合材料，该填充料按重量分数计为：聚丙烯65-75份，秸秆粉25-35份，相容剂0-12份，偶联剂0-3份，液体石蜡3-6份。生产方法是采用双螺杆挤出机对物料进行共混，将挤出的料条经冷却水冷却