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Two-component formaldehyde-free adhesive composition for artificial board

A technology of aldehyde adhesives and compositions, applied in the direction of adhesive additives, adhesive types, ester copolymer adhesives, etc., can solve mildew, short adhesive pot life, and adhesive degradation failure And other issues

Inactive Publication Date: 2021-09-28
JIANGSU AKST NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] ①The application period of the adhesive is short
[0007] ②The mechanical strength of gluing is not as good as aldehyde-containing glue
Therefore, these low Tg adhesives fail the test
[0008] ③The water resistance of protein-based formaldehyde-free adhesives is insufficient, and it is easy to breed mildew and bacteria
Adhesives based on starch and soybean protein are easily corroded and damaged by microorganisms in the natural environment because they contain a large amount of natural organic matter, and problems such as mildew and adhesive degradation failure occur.

Method used

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  • Two-component formaldehyde-free adhesive composition for artificial board
  • Two-component formaldehyde-free adhesive composition for artificial board
  • Two-component formaldehyde-free adhesive composition for artificial board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The following examples describe the solutions of the present invention in detail, but the protection scope of the present invention is not limited to the examples.

[0026] 1. Example comparison of aziridine crosslinking agents with different additions

[0027] ① Example sample preparation

[0028]

[0029] Explanation: Feed the materials of the examples in the above table sequentially from top to bottom, and use a high-speed dispersing mixer at a speed of 800-1000rpm to feed while stirring. Stir for at least 40 minutes until the viscosity of the adhesive is stable without large particles or agglomerations.

[0030] This method is adopted in the following other embodiments, and will not be repeated in the following.

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PUM

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Abstract

The invention discloses a two-component formaldehyde-free adhesive composition for an artificial board, which is a two-component formaldehyde-free adhesive composition based on a water-based polymerized acrylic resin emulsion and an aziridine cross-linking agent, and the two-component formaldehyde-free adhesive composition comprises the water-based polymerized acrylic resin emulsion, the aziridine cross-linking agent, a filler and other auxiliaries. In order to accelerate the thermocuring efficiency of the adhesive and shorten the hot pressing time of an artificial board, the aziridine cross-linking agent is used, and the thermocuring water-based formaldehyde-free woodworking adhesive is formed on the basis of combining the excellent water resistance and bonding performance of the water-based polyacrylic resin emulsion.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a two-component formaldehyde-free adhesive composition for wood-based panels. Background technique [0002] The current production of wood-based panels (plywood, fiberboard, particle board, etc.) is mostly "triamine glue", that is, urea-formaldehyde resin, phenolic resin, and melamine-formaldehyde resin. With the upgrading of the wood processing industry and the increasing demand for formaldehyde-free and environmentally friendly home decoration materials in the consumer market, the wood-based panel industry has begun to use formaldehyde-free environmentally friendly adhesives. [0003] At present, the main formaldehyde-free adhesives on the market are mainly polyurethanes and soybean protein glues. The disadvantages of polyurethane adhesives are: the glue has a short pot life and is greatly affected by the temperature and humidity of the environment. [0004] The finish...

Claims

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Application Information

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IPC IPC(8): C09J133/04C09J11/06
CPCC09J133/04C09J11/06C08K5/3412
Inventor 朱玉国唐立超杨健勋李坤张凯
Owner JIANGSU AKST NEW MATERIALS CO LTD
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