Glue-permeation-free plant protein sucrose-based environment-friendly adhesive for plywood as well as preparation method and application of glue-permeation-free plant protein sucrose-based environment-friendly adhesive

A plant protein and plywood technology, applied in the preparation of animal glue or gelatin, protein adhesives, adhesives, etc., can solve the problem of no dense glue layer, large holes on the surface of SADP adhesive, and cross-linked structure of adhesive Insufficient tightness and other problems, to achieve moderate viscosity, improve glue penetration defects, improve thermal curing rate and bonding strength

Pending Publication Date: 2021-12-31
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, synthetic resin adhesives are highly dependent on petroleum. With the increasing shortage of petroleum resources in the world, the price of petroleum is rising day by day, which makes the market cost of petroleum-derived adhesives rise sharply.
[0003] In addition, the existing wood adhesives generally have the problems of insufficient cross-linking structure of the adhesive and glue bleeding, such as figure 1

Method used

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  • Glue-permeation-free plant protein sucrose-based environment-friendly adhesive for plywood as well as preparation method and application of glue-permeation-free plant protein sucrose-based environment-friendly adhesive
  • Glue-permeation-free plant protein sucrose-based environment-friendly adhesive for plywood as well as preparation method and application of glue-permeation-free plant protein sucrose-based environment-friendly adhesive
  • Glue-permeation-free plant protein sucrose-based environment-friendly adhesive for plywood as well as preparation method and application of glue-permeation-free plant protein sucrose-based environment-friendly adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A vegetable protein sucrose-based environmental-friendly adhesive for glue-free plywood, comprising the following components in parts by weight: 100 parts of sucrose; 20 parts of ammonium dihydrogen phosphate; 3 parts of sodium metabisulfite; 2 parts of sodium carboxymethylcellulose; 0.03 parts of sodium dodecylbenzenesulfonate; 4 parts of boric acid; 3 parts of potassium hydroxide; 0.5 parts of citric acid; 10 parts of defatted soybean protein; 10 parts of dephenolized cottonseed protein and 27 parts of water.

[0035] The solid content of the adhesive is 80.0%, and the viscosity is 670 Pa·s.

[0036] Described water is distilled water.

[0037] A preparation method of a vegetable protein sucrose-based environmental-friendly adhesive for glue-free plywood, comprising the following steps:

[0038] Step 1, mixing sucrose, citric acid and water, and stirring at a low speed for 0.3 hours at room temperature;

[0039] Step 2, adding ammonium dihydrogen phosphate to the re...

Embodiment 2

[0051] The difference between this embodiment and embodiment 1 is only:

[0052] A non-penetrating vegetable protein sucrose-based environmental-friendly adhesive for plywood, comprising the following components in parts by weight: 100 parts of sucrose; 40 parts of ammonium dihydrogen phosphate; 4 parts of sodium metabisulfite; 4 parts of sodium carboxymethylcellulose; 1 part of sodium dodecylbenzenesulfonate; 5 parts of boric acid; 5 parts of potassium hydroxide; 2 parts of citric acid; 25 parts of defatted soybean protein; 25 parts of dephenolized cottonseed protein and 55 parts of water.

[0053] The solid content of the adhesive is 87.1%, and the viscosity range is 1280mPa·s.

[0054] A preparation method of a vegetable protein sucrose-based environmental-friendly adhesive for glue-free plywood, comprising the following steps:

[0055] Step 1, mixing sucrose, citric acid and water, and stirring at a low speed for 0.5 hours at room temperature;

[0056] Step 2, adding amm...

Embodiment 3

[0068] A vegetable protein sucrose-based environmental-friendly adhesive for glue-free plywood, comprising the following components by weight: 100 parts of sucrose; 30 parts of ammonium dihydrogen phosphate; 3 parts of sodium pyrosulfite; 4 parts of sodium carboxymethylcellulose; 0.05 parts of sodium dodecylbenzenesulfonate; 4.5 parts of boric acid; 4 parts of potassium hydroxide; 1 part of citric acid; 20 parts of defatted soybean protein; 15 parts of dephenolized cottonseed protein and 40 parts of water.

[0069] The solid content of the adhesive is 83.4%, and the viscosity range is 915mPa·s.

[0070] A preparation method of a vegetable protein sucrose-based environmental-friendly adhesive for glue-free plywood, comprising the following steps:

[0071] Step 1, mixing sucrose, citric acid and water, stirring at 80°C for 1 hour at low speed;

[0072] Step 2, adding ammonium dihydrogen phosphate to the reaction system, and stirring at a low speed of 90°C for 1 hour;

[0073] ...

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Abstract

The invention discloses a glue-permeation-free plant protein sucrose-based environment-friendly adhesive for plywood. The adhesive comprises the following components in parts by weight: 100 parts of sucrose; 20-40 parts of ammonium dihydrogen phosphate; 3-4 parts of sodium pyrosulfite; 2-4 parts of sodium carboxymethyl cellulose; 0.03-1 part of sodium dodecyl benzene sulfonate; 4-5 parts of boric acid; 3-5 parts of potassium hydroxide; 0.5-2 parts of citric acid; 10-25 parts of defatted soybean protein; 10-25 parts of dephenolized cottonseed protein and 27-55 parts of water. The invention further discloses a preparation method of the glue-permeation-free plant protein sucrose-based environment-friendly adhesive for the plywood and an application of the glue-permeation-free plant protein sucrose-based environment-friendly adhesive to preparation of the plywood. According to the glue-permeation-free plant protein sucrose-based environment-friendly adhesive for the plywood as well as the preparation method and the application of the glue-permeation-free plant protein sucrose-based environment-friendly adhesive, the glue permeation defect occurring when a traditional sucrose-based adhesive is used for preparing the plywood is overcome, and the problem of glue permeation on the surface of the plywood is obviously solved.

Description

technical field [0001] The invention relates to a non-penetrating vegetable protein sucrose-based environmental-friendly adhesive for plywood, a preparation method and application thereof, and belongs to the technical field of adhesives. Background technique [0002] At present, my country's wood adhesives are still dominated by "trialdehyde" glue, including urea-formaldehyde resins, phenolic resins and melamine-formaldehyde resins, accounting for more than 80% of the total output of wood adhesives, of which urea-formaldehyde resins are still used in the manufacture of wood-based panels. The species with the largest amount of use accounts for about 60% to 70% of the total. Urea-formaldehyde resin adhesives have sufficient raw materials and low prices. The price is about 1 / 4~1 / 3 of the price of phenolic resin and melamine resin, and 1 / 20~1 / 10 of the price of epoxy resin, unsaturated polyester resin and polyurethane. . In addition, it also has many performance advantages, suc...

Claims

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Application Information

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IPC IPC(8): C09J189/00C09J11/04C09J11/06B27D1/08
CPCC09J189/00C09J11/04C09J11/06B27D1/08C08L89/00C08K3/38C08K5/42C08K5/1535C08K5/29
Inventor 赵中元张雪林秋沐孙世静
Owner NANJING FORESTRY UNIV
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