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Starch-based wood adhesive and preparation method thereof

A wood adhesive and starch-based technology, which is applied in the field of fine chemicals, can solve the problems of waste accumulation environment, indoor environmental pollution, involving a wide range of areas, etc., and achieve the effects of simple production process, improved bonding strength, and simple preparation method.

Inactive Publication Date: 2015-09-30
SUZHOU YOUJUN ENVIRONMENTAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are many kinds of wood adhesives with different performances, which involve a wide range of areas, which brings a lot of inconvenience to the classification work. Although there are many classification methods, each has its own shortcomings.
The leading type of adhesive is urea-formaldehyde resin glue, which is known as the three major glues for the wood-based panel industry together with phenolic resin glue and melamine-formaldehyde resin glue. Harmful free phenol and formaldehyde will have a bad impact on the environment and the public; especially in interior decoration and furniture panels, because formaldehyde is not completely polycondensed, the key is that the cured resin releases free formaldehyde due to hydrolysis or decomposition, and gradually emits to the surroundings. causing indoor environmental pollution
Moreover, petroleum-based adhesive products are non-biodegradable materials, and long-term large-scale use will cause waste accumulation and environmental degradation. These issues have gradually attracted everyone's attention.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Starch-based wood adhesive, the components and the parts by mass of each component are as follows: 30 parts of starch, 8 parts of fructose, 5 parts of butyl acrylate, 2 parts of vinyl acetate, 1 part of urea, 3 parts of acetone, 2 parts of ethyl acrylate 1 part, isocyanate 1 part, sodium hydroxide 1 part, methyl isobutyl ketone 1 part, dioctyl phthalate 1 part, furfural 2 parts, sodium lauryl sulfate 1 part, stabilizer dimethylaniline 1 part, 1 part of dispersant monoglyceride stearate, 40 parts of water.

[0019] The preparation method comprises the following steps:

[0020] 1) Mix starch with water, then add sodium hydroxide, stir evenly, add butyl acrylate, vinyl acetate, ethyl acrylate, isocyanate, dioctyl phthalate and furfural for graft modification, heat up to 130°C, stirring and reacting at 120rpm for 45min;

[0021] 2) Add the remaining components to the solution in step 1), and stir at a speed of 130 rpm to obtain a starch-based wood adhesive.

Embodiment 2

[0023] Starch-based wood adhesive, the components and the parts by mass of each component are as follows: 40 parts of starch, 15 parts of fructose, 8 parts of butyl acrylate, 5 parts of vinyl acetate, 4 parts of urea, 5 parts of acetone, 4 parts of ethyl acrylate 3 parts, 3 parts of isocyanate, 4 parts of sodium hydroxide, 3 parts of methyl isobutyl ketone, 3 parts of dioctyl phthalate, 4 parts of furfural, 3 parts of sodium lauryl sulfate, 2 parts of stabilizer ethylenediamine part, 2.2 parts of glyceryl tristearate as a dispersant, and 60 parts of water.

[0024] The preparation method comprises the following steps:

[0025] 1) Mix starch with water, then add sodium hydroxide, stir evenly, add butyl acrylate, vinyl acetate, ethyl acrylate, isocyanate, dioctyl phthalate and furfural for graft modification, heat up to 130°C, stirring and reacting at 120rpm for 45min;

[0026] 2) Add the remaining components to the solution in step 1), and stir at a speed of 130 rpm to obtain...

Embodiment 3

[0028] Starch-based wood adhesive, the components and the parts by mass of each component are as follows: 35 parts of starch, 12 parts of fructose, 6.5 parts of butyl acrylate, 3.5 parts of vinyl acetate, 2.5 parts of urea, 4 parts of acetone, 3 parts of ethyl acrylate 2 parts, 2 parts of isocyanate, 2.5 parts of sodium hydroxide, 2 parts of methyl isobutyl ketone, 2 parts of dioctyl phthalate, 3 parts of furfural, 2 parts of sodium lauryl sulfate, 1.5 parts of stabilizer ethylenediamine 1.6 parts, 1.6 parts of dispersant monoglyceride stearate, 50 parts of water.

[0029] The preparation method comprises the following steps:

[0030] 1) Mix starch with water, then add sodium hydroxide, stir evenly, add butyl acrylate, vinyl acetate, ethyl acrylate, isocyanate, dioctyl phthalate and furfural for graft modification, heat up to 130°C, stirring and reacting at 120rpm for 45min;

[0031] 2) Add the remaining components to the solution in step 1), and stir at a speed of 130 rpm t...

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Abstract

The invention discloses a starch-based wood adhesive and a preparation method thereof. The starch-based wood adhesive is prepared by 30-40 parts of starch, 8-15 parts of fructose, 5-8 parts of butyl acrylate, 2-5 parts of vinyl acetate, 1-4 parts of urea, 3-5 parts of acetone, 2-4 parts of ethyl acrylate, 1-3 parts of isocyanate, 1-4 parts of sodium hydroxide, 1-3 parts of methyl isobutyl ketone, 1-3 parts of dioctyl phthalate, 2-4 parts of furfural, 1-3 parts of sodium lauryl sulphate, 1-2 parts of stabilizer, 1-2.2 parts of dispersing agents and 40-60 parts of water. The bonding strength, water resistant performance and stable storage performance of the adhesive are improved by taking the abundant and reproducible starch as the raw materials and through the property modification methods such as crosslinking and graft copolymerization.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to a starch-based wood adhesive and a preparation method thereof. Background technique [0002] There are many kinds of wood adhesives with different properties and a wide range of areas, which brings a lot of inconvenience to the classification work. Although there are many classification methods, each has its own shortcomings. The leading type of adhesive is urea-formaldehyde resin glue, which is known as the three major glues for the wood-based panel industry together with phenolic resin glue and melamine-formaldehyde resin glue. Harmful free phenol and formaldehyde will have a bad impact on the environment and the public; especially in interior decoration and furniture panels, because formaldehyde is not completely polycondensed, the key is that the cured resin releases free formaldehyde due to hydrolysis or decomposition, and gradually emits to the surroundin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/02C09J11/06C08F251/00C08F220/18C08F218/08C08J3/24
Inventor 夏戊君金可心凌云凌天阳
Owner SUZHOU YOUJUN ENVIRONMENTAL SCI & TECH
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