Plant straw ecological board and preparation method thereof

Abstract

The invention discloses a plant straw ecological board and a preparation method thereof. The preparation method comprises the following steps of preparing a special adhesive for the plant straw ecological board, preparing a special treating agent for the plant straw, treating the plant straw by using the special treating agent for the plant straw to prepare straw crushed aggregates, mixing plant crushed aggregates (the straw crushed aggregates, bagasse and wood residues) and a reinforcing agent, spraying the special adhesive for the plant straw ecological board into the mixture, and manufacturing the board through a hot pressing process or a cold pressing process. The plant straw ecological board and the preparation method thereof provided by the invention have the beneficial effects that the preparation method is simple, the cost is relatively low, the plant straw ecological board is very suitable for industrial production, and the obtained plant straw ecological board is high in bonding strength, good in toughness, resistant to water soaking, good in nail-holding power, waterproof, mildew-proof, mothproof, stable in quality, free of formaldehyde and other toxic and harmful volatile matters, ultralow in VOC, green, environment-friendly and safe to use.

Description

technical field [0001] The invention relates to a board and a preparation method thereof, in particular to a plant straw ecological board and a preparation method thereof, belonging to the technical field of new building materials. Background technique [0002] my country's research on crop straw wood-based panels started relatively late, and it was only in the 1970s that research on the use of raw materials such as rice straw, wheat straw, and bagasse to manufacture wood-based panels began. In the 1990s, new adhesives began to be applied. At the same time, drawing on the experience of foreign straw industry development, the manufacturing technology of wheat straw and rice straw wood-based panels has developed rapidly. [0003] At present, the Chinese Academy of Agricultural Sciences, Northeast Forestry University, Nanjing Forestry University and other scientific research institutes have carried out a lot of research on straw-based panels and achieved some achievements, for ...

AI Technical Summary

Problems solved by technology

[0007]1. MDI oil-based isocyanate adhesive is used. Since it has no initial tack, the integrity and continuity of the paving slab after sizing is not good. Collapse and delamination are prone to occur during transportation, making transportation difficult;

[0008]2. Using MDI oil-based isocyanate adhesive, there is a problem of sticking to the pavement slab during the hot pressing process, resulting in difficulty in demoulding;

[0009]3. Although MDI oil-based isocyanate adhesive does not contain formaldehyde, it contains volatile benzene aromatic hydrocarbon organic solvents

There are fire safety issues during the use, storage and transportation of oil-based glue;

[0010]4. The amount of MDI oil-based isocyanate adhesive is basically 5% of the weight of the straw. The amount of glue used is large and the cost is too high. Compared with the cost of wood-based panels, there is no competition Advantage

[0011] 2. The treatment technology of straw surface is not perfect

[0014] 3. Affect the production capacity of the equipment

[0015]1. During the paving process, the mold is glued, which makes demoulding difficult;

[0016]2. Poor heat transfer performance of straw scraps leads to prolonged hot pressing time and low production efficiency

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