Novel modified wood and preparation method thereof

The invention provides novel modified wood and a preparation method thereof.The preparation method includes: mixing a formaldehyde solution with carbamide to obtain a solution, and adding a weak acid or acid salt solution to regulate pH value to obtain a mixed solution; on the premise of avoiding of polymerization reaction, soaking wood and quickly vacuumizing the wood; controlling the temperature to enable addition reaction and condensation polymerization reaction of formaldehyde and carbamide in the wood to realize synthesis of resin in the wood and wood modification, so that the novel modified wood is obtained.The preparation method is technically simple, easy to operate, low in cost and remarkably effective; low-molecular-weight monomers such as the formaldehyde and the carbamide are successfully led into the wood to synthesize a high-molecular-weight resin adhesive which reacts with hydrophilic hydroxyl groups in the wood to finally improve dimensional stability, corrosion resistance and mechanical performance of the wood.The novel modified wood obtained according to the method is excellent in dimensional stability, corrosion resistance and mechanical performance.