Preparation method of novel formaldehyde-free high-strength ecological environment-protecting flaky solid wood structure plate

Abstract

The invention discloses a preparation method of a novel formaldehyde-free high-strength ecological environment-protecting flaky solid wood structure plate, and belongs to the technical field of building industry. The preparation method comprises the following specific steps that material preparation is carried out, specifically, narrow, long and thin wet wood shavings are prepared; drying is carried out, specifically, the wet wood shavings are dried through a mesh belt type drying machine through dead steam hot water of a self-generation power plant; screening is carried out, specifically, the dried wood shavings are screened into surface wood shavings, core wood shavings and fine wood shavings; adhesive mixing is carried out; directional paving is carried out, specifically, a lower surface layer, a lower wood shaving layer, a core layer, an upper wood shaving layer and an upper surface layer are sequentially paved on the wood shavings subjected to adhesive applying, a continuous plate blank is formed, and the wood shavings of the core layer and the wood shaving layers are directionally paved in a criss-cross mode; and finally, the plate blank is subjected to plate blank trimming, hot pressing and other treatment in sequence, and the flaky solid wood structure plate meeting the requirement is obtained. According to the preparation method of the novel formaldehyde-free high-strength ecological environment-protecting flaky solid wood structure plate, during drying, a boiler is not needed, condensate water is returned to the power plant to be recycled, therefore the heat energy utilization rate can be increased by 30%, the heat energy cost of plate drying is greatly reduced, fire hazards in the drying process are prevented, low-carbon and environment-protecting production is achieved, and the preparation method is actively suitable for the new normal state of economic development.

Description

technical field [0001] The invention relates to the technical field of construction industry, in particular to a method for preparing a new formaldehyde-free and high-strength eco-friendly sheet-shaped solid wood structural board. Background technique [0002] Timber products are indispensable means of production and living in national construction and people's lives. They are widely used in various aspects such as industrial packaging, architectural decoration, furniture manufacturing, and national defense construction. my country is a country with scarce forest resources. The potential market for timber products is huge. Under the current situation that the supply of most commodities in our country is oversupplied, this kind of timber products are one of the few products that are seriously in short supply, and the contradiction between supply and demand will exist at present and in the future for a long period of time. The main reason for the prominent contradiction betwee...

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Problems solved by technology

[0007] The pavement of ordinary sheet-shaped solid wood structural boards is mostly mechanical paving, which is prone to large shavings on the board surface; the shavings are prepared using a ring-type flaking machine, and the shavings are mostly granular and rod-shaped, and the shape is relatively small. The core layer is rod-shaped shavings, and the boards produced are subject to variability, poor nail holding power, low static bending strength, and large specific surface area of ​​shavings, resulting in a large amount of sizing

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