The invention relates to a preparation method of a waste plastic
composite material modified by waste circuit board non-
metal powder. The preparation method disclosed by the invention comprises the following steps of: performing hydrothermal process activation treatment on the waste circuit board non-
metal powder after
drying to get the activated waste circuit board non-
metal powder, further mixing the activated waste circuit board non-
metal powder with a waste plastic recycled material, and then performing
extrusion molding in a parallel co-rotating twin-screw extruder to get the waste plastic
composite material modified by the waste circuit board non-
metal powder. The preparation method disclosed by the invention is simple in process, and the hydrothermal process activation treatment isperformed on the waste circuit board non-
metal powder, so that chemical bonds of the non-metal powder can be broken, new activation points are produced for producing new activation groups from the waste circuit board non-metal powder, the purpose of improving the bonding performance of the waste circuit board non-metal powder with an interface of a
resin matrix can be achieved and the overall performance of the
composite material can be improved. According to the preparation method disclosed by the invention, the waste circuit board non-metal powder and the waste plastic recycled material aretaken as raw materials, so that
resource utilization of the waste materials is realized, the cost of the materials is simultaneously reduced, and great economic and
social significance is further realized.