Cellulose-reinforced polypropylene resin composite material, preparation method therefor and use thereof

Abstract

The invention relates to a cellulose-reinforced polypropylene resin composite material, a preparation method therefor and use thereof. The cellulose-reinforced polypropylene resin composite material comprises, relative to the total weight of the composite material: 65 wt % to 85 wt % of polypropylene resin; 10 wt % to 20 wt % of a cellulose filler; and 1 wt % to 10 wt % of dyed rayon, wherein the color of the dyed rayon is different from that of the polypropylene resin. The cellulose-reinforced polypropylene resin composite material of the invention is environmentally friendly and simple to process, and has a simple molding process. The article prepared therefrom has excellent physical and chemical properties, uniform matte appearance and two-color effect.

1 . A cellulose-reinforced polypropylene resin composite material, wherein it comprises, relative to the total weight of the cellulose-reinforced polypropylene resin composite material:
 65 wt % to 85 wt % of polypropylene resin;   10 wt % to 20 wt % of a cellulose filler; and   1 wt % to 10 wt % of dyed rayon,   wherein the color of the dyed rayon is different from that of the polypropylene resin.   
     
     
         2 . The cellulose-reinforced polypropylene resin composite material according to  claim 1 , wherein the cellulose filler is derived from one or more of wood, cotton, wheat straw, hemp and rice straw. 
     
     
         3 . The cellulose-reinforced polypropylene resin composite material according to  claim 1 , wherein the cellulose filler has a diameter ranging from 20 to 60 μm, and a length ranging from 0.5 to 1 mm. 
     
     
         4 . The cellulose-reinforced polypropylene resin composite material according to  claim 1 , wherein the dyed rayon has a diameter ranging from 10 to 20 μm, and a length ranging from 0.3 to 0.8 mm. 
     
     
         5 . The cellulose-reinforced polypropylene resin composite material according to  claim 1 , wherein the content of the dyed rayon is 2 wt % to 9 wt % relative to the total weight of the composite material. 
     
     
         6 . The cellulose-reinforced polypropylene resin composite material according to  claim 1 , wherein the cellulose-reinforced polypropylene resin composite material also comprises a pigment. 
     
     
         7 . The cellulose-reinforced polypropylene resin composite material according to  claim 6 , wherein the content of the pigment is 1 wt % to 6 wt % relative to the total weight of the composite material. 
     
     
         8 . The cellulose-reinforced polypropylene resin composite material according to  claim 1 , wherein the cellulose-reinforced polypropylene resin composite material also comprises an additive selected from: antioxidants, light stabilizers, mold release agents, free radical scavengers and compatibilizers. 
     
     
         9 . A method for preparing the cellulose-reinforced polypropylene resin composite material according to  claim 1 , wherein the corresponding raw materials are mixed, melted, extruded, cooled and granulated. 
     
     
         10 . An article, wherein it is prepared from the cellulose-reinforced polypropylene resin composite material according to  claim 1 . 
     
     
         11 . The article according to  claim 10 , wherein the article is an automobile interior or exterior trim part.