Degradable environment-friendly wood adhesive and preparation method thereof

CN120829746BActive Publication Date: 2026-06-19VALENCE BONDING TECH SHANGHAI CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-04-17
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing biodegradable wood adhesives exhibit reduced bonding strength and poor initial tack at high temperatures, making it difficult to maintain stability under changing environmental conditions.

Method used

The adhesive employs a combination of polyvinyl alcohol solvent, copolymer emulsion, stabilizer, filler and additives to improve the initial tack and stability of the adhesive through electrostatic interaction, hydrogen bonding and interpenetrating network structure, and uses biodegradable heat-resistant powder and kaolin to improve its resistance at high temperatures.

Benefits of technology

Even after prolonged exposure to high temperatures, the adhesive maintains good bonding strength and stability, reducing the impact of environmental factors on performance and improving the adhesive's flowability and wetting properties.

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Abstract

The application relates to the field of adhesives, and particularly discloses a degradable environment-friendly woodworking adhesive and a preparation method thereof. The adhesive comprises the following raw materials in parts by weight: polyvinyl alcohol dissolving solution 10-20 parts, filler 3-10 parts, copolymer emulsion 45-60 parts, stabilizer 10-20 parts, glycerol 1-3 parts, and additive 1-4 parts; the solid content of the adhesive is 40-50%, and the viscosity is 15000-19000 cps (25 DEG C). The preparation method of the adhesive comprises the following steps: stirring the copolymer emulsion, uniformly dispersing the stabilizer, then adding the polyvinyl alcohol dissolving solution to obtain a mixture by homogenization; adding the filler into the mixture and increasing the stirring speed, then adding glycerol, the additive and proper water after the filler is uniformly dispersed and no particle is left, and stirring until the system is uniform and no air bubble is left. The obtained adhesive has excellent bonding performance, and still has good bonding strength after being placed at a high temperature for a long time.
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Citation Information

Patent Citations

  • Novel wood adhesive and preparation method therefor

    CN105219305A

  • Environment-friendly wood adhesive

    CN106118551A