Three-dimensional composite board and manufacturing method thereof

The invention discloses a three-dimensional composite board and a manufacturing method thereof, and belongs to the field of three-dimensional composite boards. According to the invention, an unidirectionally laid glass fiber reinforced polypropylene composite material laminated board is prepared by adopting a compression molding process method; the glass fiber reinforced polypropylene composite material under different fusion temperature, fusion pressure and fusion time process conditions is prepared by using a compression molding method; the hot fusion quality of the composite board is improved firstly and then reduced along with the rise of the hot fusion temperature, the optimal hot fusion quality is achieved at 190 DEG C, and the defect of fiber bending in the composite board can be caused by over-high temperature; the hot melting quality of the composite board is gradually increased along with the increase of the hot melting pressure, the optimal hot melting quality is achieved at0.3-0.4 MPa, and the def