Biomass formaldehyde-free adhesive for artificial board and preparation method thereof

A technology of aldehyde adhesive and biomass, which is applied in the field of biomass aldehyde-free adhesive for wood-based panels and its preparation, can solve the problems of easy moisture absorption and mildew, deviation of water resistance, low initial bonding strength, etc., and achieve easy application Glue, zero formaldehyde content, high-efficiency bonding effect

Active Publication Date: 2020-03-27
HEFEI KETIAN WATERBORNE TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, although the formaldehyde emission of domestic adhesives is far lower than that of trialdehyde adhesives, there are still many problems in terms of bonding performance, such as easy cracking under high-temperature boiling conditions, and easy moisture absorption in some high-humidity environments such as the south. Mildew, poor water resistance, low initial bond strength, and difficulty in sizing restrict its application to a certain extent

Method used

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  • Biomass formaldehyde-free adhesive for artificial board and preparation method thereof
  • Biomass formaldehyde-free adhesive for artificial board and preparation method thereof
  • Biomass formaldehyde-free adhesive for artificial board and preparation method thereof

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preparation example Construction

[0029] Such as figure 1 Shown is a schematic flow diagram of the method according to an embodiment of the present invention. A method for preparing a biomass aldehyde-free adhesive is provided, which at least includes the following steps:

[0030] S1. Pre-treating 50-125 parts by mass of the mixed protein with 10-80 parts by mass of a modification treatment agent to expose the functional groups on the protein molecular chain of the mixed protein to obtain a protein modification solution;

[0031] S2. Add 50-250 parts by mass of a cross-linking agent to the protein modification solution, and the cross-linking agent reacts with the functional group to form a three-dimensional cross-linked network structure to obtain a mixed system;

[0032] S3. Mix and stir the mixing system, 10-25 parts by mass of biomass colloid and 1-15 parts by mass of weak acid, and heat treatment to obtain the biomass aldehyde-free adhesive.

[0033] Specifically, in step S1, the process of pretreatment includes t...

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Abstract

The invention discloses a biomass formaldehyde-free adhesive for an artificial board and a preparation method thereof. The biomass formaldehyde-free adhesive comprises mixed protein, biomass colloid,a modification treatment agent, a cross-linking agent, weak acid and the like. The biomass formaldehyde-free adhesive has the advantages of zero formaldehyde, high bonding strength, good water resistance, good anti-mildew effect, easiness in sizing and the like.

Description

Technical field [0001] The invention belongs to the field of adhesives, and specifically relates to a biomass-free aldehyde adhesive for artificial boards and a preparation method thereof. Background technique [0002] At present, the wood adhesive industry is increasingly inclined to use biomass materials to prepare aldehyde-free, environmentally friendly wood adhesives. At present, the adhesives based on biomass materials mainly include tannin, lignin, starch, and protein. Among the adhesives, biomass powder filler adhesives are the mainstream of research and development, and they are currently used in wood-based panel production on a large scale abroad. Although the amount of formaldehyde released by domestic adhesives is much lower than that of trialdehyde glue, there are still many problems in the bonding performance, such as easy cracking under high temperature boiling, and easy absorption of moisture in some high humidity environments such as the South Moldy, poor water ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00C09J177/06C09J175/08C09J11/08B27D1/04
CPCC09J189/00C09J177/06C09J11/08B27D1/04C08L2205/035C08L77/06C08L75/08C08L91/06C08L1/04C08L89/00
Inventor 李维虎闫成成许金凤赵曦朱保凌戴家兵
Owner HEFEI KETIAN WATERBORNE TECH CO LTD
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