Environment-friendly atmospheric pressure wood assembly adhesive

An adhesive and normal pressure technology, applied in the direction of polymer adhesive additives, non-polymer adhesive additives, unsaturated alcohol copolymer adhesives, etc., can solve the effects of less mechanical bonding, bubble defects, and low pressure And other problems, to achieve the effect of improving the interface bonding performance, low VOC content, and high bonding strength

Inactive Publication Date: 2016-01-06
JIANGSU QIYANLI PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lower pressure effect is not conducive to the penetration of the adhesive into the cell cavity of the wood surface, the contact area at the interface joint is small, and the "pin type" mechanical bonding that can be formed is less; the lower pressure effect is also not conducive to the diffusion between latex particles And fusion, it is not easy to form a sufficient continuous film between the wood and the wood surface to achieve bonding; in addition, it is not conducive to the removal of CO2 gas generated by the isocyanate reaction in the adhesive layer, resulting in bubble defects in the adhesive film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The environmental-friendly normal-pressure wood assembly adhesive includes component A and component B, and the component B is a crosslinking agent; the crosslinking agent is polyisocyanate PAPI (polyphenyl polymethylene polyisocyanate).

[0031] The raw materials and their mass parts in the described A component are: 4 parts of polyvinyl alcohol, 30 parts of polyvinyl acetate emulsion, 30 parts of vinyl acetate-ethylene copolymer emulsion, 0.4 parts of pH buffer agent, and 0.2 parts of nanoparticles , 0.15 parts of dispersant (sodium carboxymethyl cellulose), 0.15 parts of defoamer, 0.15 parts of preservative, 0.2 part of wetting agent, 0.3 part of leveling agent, 22 parts of water; the degree of polymerization of polyvinyl alcohol is 2400 , alcoholysis degree is 88%; The solid content of described polyvinyl acetate emulsion and vinyl acetate-ethylene copolymer emulsion is about 50%; Described vinyl acetate-ethylene copolymer emulsion particle diameter ; The pH bufferin...

Embodiment 2

[0038] The environmental-friendly normal-pressure wood assembly adhesive includes component A and component B, and the component B is a cross-linking agent; the cross-linking agent is polyisocyanate MDI (diphenylmethane diisocyanate).

[0039]The raw materials in component A and their parts by mass are: 5 parts of polyvinyl alcohol, 40 parts of polyvinyl acetate emulsion, 20 parts of vinyl acetate-ethylene copolymer emulsion, 0.3 parts of pH buffer agent, and 0.3 parts of nanoparticles , 0.2 parts of dispersant, 0.1 part of defoamer, 0.2 part of preservative, 0.1 part of wetting agent, 0.2 part of leveling agent, 25 parts of water. The degree of polymerization of the polyvinyl alcohol is 1700, and the degree of alcoholysis is 88%; the solid content of the polyvinyl acetate emulsion and polyvinyl acetate-ethylene emulsion is about 50%; the vinyl acetate-ethylene copolymer emulsion Particle size ; The pH buffering agent is sodium carbonate; The nanoparticles are TiO 2 , the par...

Embodiment 3

[0046] The environmental-friendly normal-pressure wood assembly adhesive includes component A and component B, and the component B is a crosslinking agent; the crosslinking agent is polyisocyanate PAPI (polyphenyl polymethylene polyisocyanate).

[0047] The raw materials in component A and their parts by mass are: 3 parts of polyvinyl alcohol, 20 parts of polyvinyl acetate emulsion, 40 parts of vinyl acetate-ethylene copolymer emulsion, 0.5 parts of pH buffering agent, and 0.1 part of nanoparticles , 0.05 parts of dispersant, 0.3 parts of defoamer, 0.4 parts of preservative, 0.5 parts of wetting agent, 0.5 parts of leveling agent, and 30 parts of water. The degree of polymerization of the polyvinyl alcohol is 2600, and the degree of alcoholysis is 88%; the solid content of the polyvinyl acetate emulsion and the polyvinyl acetate-ethylene emulsion is 50%; the particle diameter of the polyvinyl acetate-ethylene emulsion is ; The pH buffering agent is sodium bicarbonate; The nan...

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Abstract

The invention relates to an environment-friendly atmospheric pressure wood assembly adhesive which comprises a component A and a component B, wherein the component B is a cross-linking agent; the component A is prepared from the following raw materials in parts by weight: 3-5 parts of polyvinyl alcohol, 20-40 parts of a polyvinyl acetate emulsion, 20-40 parts of a vinyl acetate-ethylene copolymerization emulsion, 0.3-0.5 part of a pH buffer agent, 0.1-0.3 part of nano particles, 0.05-0.2 part of a dispersing agent, 0.1-0.3 part of an antifoaming agent, 0.1-0.5 part of a preservative, 0.1-0.5 part of a wetting agent, 0.1-0.5 part of a flatting agent and 20-30 parts of water. The used polymer and auxiliary ingredients belong to chemicals which are low in toxicity, friendly to environment and beneficial to clean production; the environment-friendly atmospheric pressure wood assembly adhesive does not contain harmful components such as formaldehyde, and is an environment-friendly adhesive.

Description

technical field [0001] The invention relates to an environment-friendly atmospheric pressure wood assembly adhesive and a preparation method thereof, belonging to the technical field of adhesives. Background technique [0002] Wooden furniture is generally assembled by several parts according to a certain joint method. The common assembly methods of modern wooden furniture include tenon joint, nail joint, connector joint and adhesive joint. Simple, easy to operate, low cost, wide application range, good sealing and anti-corrosion performance, high fatigue resistance and other advantages, it is more and more widely used in the field of wood assembly. In addition, mortise and tenon joints, finger joints, veneer veneers, and jigsaw panels involved in the manufacturing process of solid wood furniture are inseparable from gluing technology. Adhesives play a very important role in the production of solid wood furniture. [0003] With the strengthening of people's awareness of env...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J131/04C09J129/04C09J175/04C09J11/04C09J11/06C09J11/08
Inventor 霍梦董黎明黄斌
Owner JIANGSU QIYANLI PAINT CO LTD
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