Urea-formaldehyde resin environment-friendly filler for plywood

A technology of urea-formaldehyde resin and plywood, applied in the direction of adhesives, adhesive types, adhesive additives, etc., can solve the problems of bentonite without formaldehyde removal, limit formaldehyde adsorption, and plywood hardening, etc., achieve strong water absorption, simple process, and improve initial sticky effect

Active Publication Date: 2020-07-31
高振忠 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the commonly used fillers in the market are mainly inorganic mineral powder and organic fillers. The most common inorganic fillers are bentonite, kaolin, attapulgite, and sepiolite instead of flour. However, bentonite and kaolin have no formaldehyde-removing effect, and bentonite has a large expansion It is easy to cause the plywood to be glued, and excessive addition of flour will cause the problem of plywood hardening; in addition, in the process of use, it is still necessary to add a large amount of organic fillers such as flour and starch to ensure the strength of the board, which also limits the adsorption of formaldehyde

Method used

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  • Urea-formaldehyde resin environment-friendly filler for plywood

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Effect test

Embodiment 1

[0023] An environmentally friendly urea-formaldehyde resin filler for plywood, characterized in that it is formed by mixing the following materials in parts by weight: rice husk powder 10, wheat bran powder 10, flour 10, attapulgite 30, modified bovine bone powder 20, p-toluene Sulfonamide 3, antiaging agent AW 2, curing agent ammonium chloride 6, thickener sodium carboxymethyl cellulose 5, compatibilizer ABS-g-MAH 2.

[0024] The preparation method of described modified bovine bone powder is as follows:

[0025] (1) Degreased bovine bone meal 20, plant ash 3, polyisobutylene 2, methyl acrylate 3, glycerol 3, thiourea 2, polyquaternium-7 0.05, carboxymethyl cellulose 5, arachidonic acid 3, Sodium bicarbonate 0.1, ethylene glycol diglycidyl ether 2, emulsifier Z37A0.25, coupling agent KH500 0.5, distilled water 120;

[0026] (2) After crushing and sieving the defatted bovine bone powder, mix it with plant ash, carboxymethyl cellulose, polyisobutylene, glycerin, and thiourea at...

Embodiment 2

[0029] An environmentally friendly urea-formaldehyde resin filler for plywood, characterized in that it is formed by mixing the following materials in parts by weight: rice husk powder 15, wheat bran powder 15, flour 5, attapulgite 25, modified bovine bone powder 30, p-toluene Sulfonamide 3, antiaging agent AW 2, curing agent ammonium chloride 10, thickener sodium carboxymethylcellulose 6, compatibilizer EVA-g-MAH 2.

[0030] The preparation method of described modified bovine bone powder is as follows:

[0031] (1) Degreased bovine bone meal 20, plant ash 4, polyisobutylene 4, methyl acrylate 5, glycerol 3, thiourea 2, polyquaternium-7 0.05, carboxymethyl cellulose 5, arachidonic acid 3, Sodium bicarbonate 0.1, ethylene glycol diglycidyl ether 2, emulsifier Z37A0.30, coupling agent KH500 1, distilled water 120;

[0032] (2) After crushing and sieving the defatted bovine bone powder, mix it with plant ash, carboxymethyl cellulose, polyisobutylene, glycerin, and thiourea at a ...

Embodiment 3

[0035] An environmentally friendly urea-formaldehyde resin filler for plywood, characterized in that it is formed by mixing the following materials in parts by weight: rice husk powder 15, wheat bran powder 10, flour 10, attapulgite 20, modified bovine bone powder 30, p-toluene Sulfonamide 6, antiaging agent AW 3, curing agent sodium carboxymethyl cellulose ammonium chloride 10, thickener 8, compatibilizer EVA-g-MAH 3.

[0036] The preparation method of described modified bovine bone powder is as follows:

[0037] (1) Degreased bovine bone meal 25, plant ash 4, polyisobutylene 2, methyl acrylate 5, glycerol 3, thiourea 2, polyquaternium-7 0.05, carboxymethyl cellulose 5, arachidonic acid 6, Sodium bicarbonate 0.15, ethylene glycol diglycidyl ether 2, emulsifier Z37A0.30, coupling agent KH500 1, distilled water 120;

[0038] (2) After crushing and sieving the defatted bovine bone powder, mix it with plant ash, carboxymethyl cellulose, polyisobutylene, glycerin, and thiourea at...

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Abstract

The invention discloses an urea-formaldehyde resin environment-friendly filler for a plywood. The urea-formaldehyde resin environment-friendly filler is prepared from 10-20 parts of rice hull powder,10-15 parts of wheat bran powder, 5-10 parts of flour, 20-30 parts of attapulgite, 20-30 parts of modified bovine bone powder and 3-6 parts of p-toluenesulfonamide, and 2-3 parts of an anti-aging agent, 5-10 parts of a curing agent, 5-8 parts of a thickening agent and 2-3 parts of a bulking agent. The invention also provides a preparation method of the modified bovine bone powder. The invention has the advantages of simple and convenient glue mixing method, simple process, cost saving, high production efficiency, easiness in operation and industrialization realization, and good product performance.

Description

technical field [0001] The invention relates to an environmentally friendly urea-formaldehyde resin filler for plywood, which belongs to the field of adhesive additives. Background technique [0002] Urea-formaldehyde resin has been widely used in the wood-based panel industry since its appearance and development due to its advantages of low price, simple manufacture, and bonding performance, especially as plywood for indoor furniture and flooring. The use of urea-formaldehyde resin needs further improvement. [0003] During the use of urea-formaldehyde resin, especially in the production of indoor plywood, in order to reconcile the consistency and adhesion of the glue, reduce the cost of the glue, and meet the process requirements, it is usually necessary to add an appropriate amount of filler or additive. Not only can it avoid glue penetration and reduce the internal stress caused by the shrinkage of the glue layer during the curing process of the glue, thereby prolonging ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J161/24C09J11/04C09J11/06C09J11/08C08H1/00
CPCC08H1/00C08L2205/035C08L2205/16C09J11/04C09J11/06C09J11/08C09J161/24C08L97/02C08L55/02C08L1/286C08L89/00C08L99/00C08K13/04C08K7/26C08K5/19C08K5/435C08K5/3437
Inventor 高振忠侯贤锋
Owner 高振忠
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