A kind of aluminum-wood composite multi-layer functional board and preparation method thereof

Abstract

The invention relates to the technical field of preparation of function boards, and discloses an aluminum-wood composite multi-layer function board and a preparation method thereof. The preparation method comprises the following steps: polishing the surfaces of a medium-density fiber board and rotary-cut wood veneers; polishing the surfaces of aluminum foils, and washing and drying; respectively weighing phenolic resin, polyvinyl acetate emulsion and purified water, and uniformly mixing in a container; respectively coating the polished surfaces of two aluminum foils, the medium-density fiber board and the rotary-cut wood veneers with an adhesive; drying the adhesive on the polished surfaces until the adhesive is transparent; assembling according to a sequence of the rotary-cut wood veneer,the aluminum foil, the medium-density fiber board, the aluminum foil and the rotary-cut wood veneer; carrying out cold pressing and prepressing for 5 minutes; carrying out hot pressing, taking out aboard after finishing the hot pressing, and naturally cooling to room temperature. According to the aluminum-wood composite multi-layer function board and the preparation method thereof, disclosed bythe invention, the physical and mechanical properties of plywood are increased, the production cost of the board is reduced, and the energy consumption of the board is reduced.

Description

technical field [0001] The invention relates to the technical field of preparation of functional boards, in particular to an aluminum-wood composite multilayer functional board and a preparation method thereof. Background technique [0002] In recent years, due to the year-by-year decrease in the output of logs worldwide, the restrictions on the export of logs by various countries, and the increasing demand for solid wood products in the market, the price of high-quality wood has risen too fast; and with the continuous improvement of people's living standards, The demand for wood-based materials is constantly increasing and placing more demands on their functionality. Multi-layer solid wood composite wood-based panel is a new type of plywood newly developed in recent years. It not only has the beautiful and natural color texture of solid wood panels, but also has a warm and pleasant feeling. It is widely used in wooden floors, furniture, and building decoration materials. H...

AI Technical Summary

Problems solved by technology

However, due to the defects of the wooden material itself: shrinkage and swelling when dry, easy to burn, poor waterproof, poor weather resistance and other defects, its scope of use has been reduced.

[0003] Wooden board and metal aluminum foil are two materials with completely different properties. The difference in linear thermal expansion coefficient is nearly 4 times. When hot pressing, the shrinkage and expansion ratio of the two should be considered, and the adhesive with toughness should be used to control the hot pressing temperature in a lower range. In order to prevent large internal stress due to material shrinkage after hot pressing, resulting in failure of bonding, low bonding strength and deformation of composite materials

The adhesives used in traditional metal veneer panels are expensive, the surface treatment of materials and the hot-pressing composite process are complex, and the energy consumption is high; the cold-pressing cycle is long, the production efficiency is low, and the investment in equipment is large, resulting in high prices for aluminum-wood composite multi-layer functional panels. , so that its promotional application is limited

Images