The invention discloses a
polypropylene / fiberglass
composite material and a preparation method thereof. The
polypropylene / fiberglass
composite material is prepared from the following raw materials in parts by weight: 100 parts of
polypropylene, 15-50 parts of fiberglass, 5-15 parts of
maleic anhydride grafted polypropylene, 0.2-0.5 part of
peroxide initiator and 0.5-2 parts of
epoxy resin. The preparation method of the polypropylene / fiberglass
composite material comprises the steps of: uniformly mixing weighed polypropylene,
maleic anhydride grafted polypropylene and the
peroxide initiator according to the ratios, adding to the upstream feeding port of a screw extruder at the temperature of 160-230 DEG C and mixing; synchronously carrying out
epoxy resin
surface coating treatment on the fiberglass, weighing the fiberglass before and after
coating, calculating the addition amount of
epoxy resin according to the
weight difference of the fiberglass before and after
coating, introducing to the downstream fiberglass adding port of the screw extruder, and by virtue of the shearing action of the screw extruder, shearing the fiberglass into about 0.2-0.5 mm and uniformly dispersing the fiberglass in a base material; and extruding, drawing and granulating. The material is good in strength, rigidity and
impact ductility, simple in process, low in cost and high in production efficiency.