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Biological wood adhesive and preparation method therefor

A wood adhesive, bio-based technology, applied in the field of fine chemicals, can solve the problems of poor adhesive viscosity, long curing time, lack of elasticity, etc., and achieve high bonding strength, low price, and good aging resistance. Effect

Inactive Publication Date: 2015-11-25
SUZHOU YOUJUN ENVIRONMENTAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the preparation of natural polymer adhesives for the modification of natural polymer adhesives is also a research hotspot. In recent years, most of the research on bio-based wood adhesives has been modified by soybean protein isolate or starch. The disadvantage is that the viscosity of the prepared adhesive is poor, the glue is inelastic after curing, and the curing time is long.

Method used

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  • Biological wood adhesive and preparation method therefor

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Effect test

Embodiment 1

[0018] Bio-based wood adhesive, the components and the mass parts of each component are as follows: 30 parts of corn starch, 10 parts of tapioca starch, 18 parts of sucrose, 8 parts of pectin, 5 parts of methyl cellulose, 8 parts of propylene glycol alginate, 3 parts of succinic anhydride, 5 parts of potassium permanganate, 10 parts of polyvinyl alcohol, 0.09 parts of nano silicon dioxide, 0.08 parts of calcium carbonate, 5 parts of sodium hydroxide, 6 parts of epichlorohydrin, 3 parts of urea, twelve 3.5 parts of sodium alkyl sulfate, 7 parts of dibutyl phthalate, 5 parts of cis-pentadiene, 3 parts of butyl acrylate, 0.8 parts of benzoyl peroxide, and 70 parts of water.

[0019] The preparation method comprises the steps of:

[0020] 1) Mix starch and water, stir evenly, add sodium hydroxide, stir at 45rpm for 25min;

[0021] 2) Add potassium permanganate to the starch solution in step 1) and stir for 1 hour, then add the remaining components, raise the temperature to 100°C,...

Embodiment 2

[0023] Bio-based wood adhesive, the components and the parts by mass of each component are as follows: 10 parts of potato starch, 10 parts of corn starch, 10 parts of sucrose, 5 parts of pectin, 3 parts of methyl cellulose, 4 parts of propylene glycol alginate, 1 part of succinic anhydride, 2 parts of potassium permanganate, 5 parts of polyvinyl alcohol, 0.01 part of nano silicon dioxide, 0.02 part of calcium carbonate, 2 parts of sodium hydroxide, 1 part of epichlorohydrin, 1 part of urea, twelve 1 part sodium alkyl sulfate, 3 parts dibutyl phthalate, 1 part pentadiene, 1 part butyl acrylate, 0.1 part benzoyl peroxide, 50 parts water.

[0024] The preparation method comprises the steps of:

[0025] 1) Mix starch and water, stir evenly, add sodium hydroxide, stir at 45rpm for 25min;

[0026] 2) Add potassium permanganate to the starch solution in step 1) and stir for 1 hour, then add the remaining components, raise the temperature to 100°C, and react for 9 hours to obtain a b...

Embodiment 3

[0028] Bio-based wood adhesive, the components and the parts by mass of each component are as follows: 30 parts of corn starch, 14 parts of sucrose, 6 parts of pectin, 4 parts of methyl cellulose, 6 parts of propylene glycol alginate, 2 parts of succinic anhydride , 3 parts of potassium permanganate, 8 parts of polyvinyl alcohol, 0.05 parts of nano silicon dioxide, 0.06 parts of calcium carbonate, 4 parts of sodium hydroxide, 3.5 parts of epichlorohydrin, 2 parts of urea, 2.6 parts of sodium lauryl sulfate parts, 5 parts of dibutyl phthalate, 3 parts of cis-pentadiene, 2 parts of butyl acrylate, 0.4 parts of benzoyl peroxide, and 60 parts of water. The preparation method comprises the steps of:

[0029] 1) Mix starch and water, stir evenly, add sodium hydroxide, stir at 45rpm for 25min;

[0030] 2) Add potassium permanganate to the starch solution in step 1) and stir for 1 hour, then add the remaining components, raise the temperature to 100°C, and react for 9 hours to obtain...

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Abstract

The invention discloses a biological wood adhesive and a preparation method therefor. The biological wood adhesive is prepared from the components in parts by weight: 20-40 parts of starch, 10-18 parts of saccharose, 5-8 parts of pectin, 3-5 parts of methylcellulose, 4-8 parts of propylene glycol alginate, 1-3 parts of butanedioic anhydride, 2-5 parts of potassium permanganate, 5-10 parts of polyvinyl alcohol, 0.01-0.09 part of nano silicon dioxide, 0.02-0.08 part of calcium carbonate, 2-5 parts of sodium hydroxide, 1-6 parts of epoxy chloropropane, 1-3 parts of urea, 1-3.5 parts of lauryl sodium sulfate, 3-7 parts of dibutyl phthalate, 1-5 parts of cis-pentadiene, 1-3 parts of butyl acrylate, 0.1-0.8 part of benzoyl peroxide and 50-70 parts of water. By taking abundant and recyclable biological resources starch and saccharose as raw materials, the adhesive is good in water resistance, heat resistance and aging resistance, and can be cured within a short time at a low pressure at normal temperature.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to a bio-based wood adhesive and a preparation method thereof. Background technique [0002] my country is a Shaolin country, and the forest coverage rate is only 12%, which is much lower than the world average level. In order to improve the utilization rate of wood resources, adhesives are added to wood chips, shavings and branches, etc., which can be pressed into plywood, particleboard and fiberboard, which are collectively referred to as man-made plate. The leading variety of adhesives used here is urea-formaldehyde resin glue, which, together with phenolic resin glue and melamine-formaldehyde resin glue, is known as the three major glues for the wood-based panel industry. However, trialdehyde glue derived from petroleum is due to It will release free phenol and formaldehyde that are harmful to the human body, which will have a bad impact on the environment and...

Claims

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Application Information

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