Composite material laminated board and preparation method thereof

Abstract

The invention relates to a composite material laminated board and a preparation method thereof, and belongs to the technical field of building decoration materials. The structure comprises impregnatedpaper positioned on the upper layer, an intermediate layer sheet positioned in the middle and a substrate positioned on the lower layer, wherein a PUR hot melt adhesive layer is arranged between theintermediate layer sheet and the base plate, the impregnated paper is decorative paper impregnated by thermosetting resin, the intermediate layer sheet is a fiber sheet which can be respectively permeated by the thermosetting resin and PUR hot melt adhesive, and the base plate is a sheet-shaped plate of which the surface cannot be directly bonded with the thermosetting resin. According to the invention, fibers of the intermediate layer are used as a medium to form two cured layers which are respectively bonded with two materials which cannot be bonded with each other. The preparation process adopts a two-step production method of firstly preparing the composite substrate of the intermediate layer thin plate and the substrate, and then carrying out hot-pressing compounding on the compositesubstrate and gum dipping to form the composite laminated board. Therefore, the obtained composite laminated board has the advantages of boiling resistance, water soaking resistance, heat resistance,no layering and long service life.

Description

technical field [0001] The invention relates to a composite material laminated board and a preparation method thereof, belonging to the technical field of building decoration materials. Background technique [0002] At present, the base materials of floor and wall decorative panels are mainly wood or wood-based panels, but their water resistance is poor, and wood-based panels also release formaldehyde. PVC or PP, PE (the following are represented by PVC) and other polymers as the main material, calcium carbonate or various fibers as fillers, sheet-like boards made by extrusion molding (such as: SPC, WPC, etc.) have good water resistance while avoiding the problem of formaldehyde pollution. At present, the building decoration materials (decorative panels, floors, etc.) prepared with this base material are made of one-time compounding of the base plate and the PVC decorative film with printed patterns, but the heat resistance, surface hardness, and surface gloss of the PVC ma...

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the technical problem through the following technical solutions: a composite material laminate, comprising impregnated paper impregnated with a thermosetting resin on the upper layer, an interposer sheet in the middle and a substrate on the lower layer, the interposer sheet and the substrate It has a PUR hot-melt adhesive layer, and there is a solidified thermosetting resin layer mixed with the intermediary layer and the impregnated paper fiber between the impregnated paper and the interlayer sheet. The intermediary layer sheet can be respectively covered with PUR hot-melt adhesive and A fiber sheet in which thermosetting resin penetrates from both sides of the interposer sheet, and the substrate is a sheet-like plate whose surface cannot be directly bonded to the thermosetting resin

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