High-efficiency heat-conducting high-density fiberboard and manufacturing method thereof

Abstract

The invention discloses a high-efficiency heat-conducting high-density fiberboard. The high-efficiency heat-conducting high-density fiberboard is composed of biomass fibers, a heat conduction materialand an additive, and the heat conduction material comprises tourmaline powder and aluminum oxide powder. The invention further discloses a manufacturing method of the high-efficiency heat-conductinghigh-density fiberboard. The preparation method comprises the following steps that fiber slurry is prepared; water mixture liquid of heat conduction material powder, surface modifier and partial adhesive are sprayed into the fiber slurry; the rest of the adhesive is continuously applied again and dried to obtain dried fibers; and after assembly and pre-pressing are performed on the dried fibers, the high-efficiency heat-conducting and high-density fiberboard is obtained through hot pressing, edge cutting, heat dissipation and growth and sanding. According to the high-efficiency heat-conductinghigh-density fiberboard, aluminum oxide powder and tourmaline powder are adopted as heat conduction materials, a pressurization spraying mode is adopted, and the heat conduction material powder and the fibers are highly dispersed by means of the pre-adhesion of the partial adhesive, so that the dispersion uniformity and stability of the heat conduction material are improved, and the heat transferefficiency of the high-density fiberboard is enhanced.

Description

technical field [0001] The invention relates to the field of functional wood-based panels and wooden floors for floor heating. More specifically, the present invention relates to a high-efficiency heat-conducting high-density fiberboard and a manufacturing method thereof. Background technique [0002] High-density fiberboard is often used to make laminate flooring, and is popular in the market and consumers because of its excellent decorative performance, stable structure and reasonable price. In 2017, the total annual output and sales of wood flooring in my country exceeded 500 million m 2 , ranking first in the world, among which the sales of laminate flooring account for about 52% of the total sales of wood flooring in my country. Although its high density improves thermal conductivity somewhat, fiberboard is still a poor conductor of heat. Wooden floors are used in floor heating systems, and are generally laid on top of hot water pipes, electric heating cables, and el...

AI Technical Summary

Problems solved by technology

At present, in terms of heat-conducting solid wood composite flooring, the heat transfer distance and the heat dissipation speed in the plane direction of the floor are mainly reduced by hollowing out the back of the floor and embedding aluminum profiles; in terms of heat-conducting fiberboards, carbon black, graphite, Carbon nanotubes, carbon fibers, aluminum oxide, and magnesium oxide are used as thermally conductive materials. The surface properties of thermally conductive materials are improved by applying coupling agents. After drying, they are mixed with biomass fibers, and then urea-formaldehyde resin is applied for hot-compression lamination. Significantly improve the thermal conductivity of fiberboard; but the initial viscosity of thermal conductive materials is very low, the mixing uniformity is low, the preparation process is easy to settle, and it is difficult to apply to the automatic production of fiberboard

At present, there are not many patented technologies related to improving the thermal conductivity of fiberboard, and industrial production has not yet been seen.

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