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Low-cost environment-friendly water glass wood adhesive and preparation method thereof

A wood adhesive and environmentally friendly water technology, used in adhesives, adhesive additives, inorganic adhesives, etc., can solve the problems of toxic compounds polluting the environment and harming health, and achieve low price, high density, and high mechanical strength. Effect

Active Publication Date: 2013-01-09
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a low-cost environmentally friendly water glass wood adhesive and its preparation method. This water glass wood adhesive is a modified adhesive with strong adhesion and water resistance. It is better to solve the technical defects of aldehydes or other toxic compounds polluting the environment and endangering the health of the existing organic adhesives used for bonding wood products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Heat 90 parts by weight of deionized water to 95°C, slowly add 10 parts by weight of polyvinyl alcohol, stir well until the polymer dissolves, and make a polyvinyl alcohol solution with a mass fraction of 10%; add 100 parts by weight of polyvinyl alcohol Slowly add 30% sodium water glass into the above solution, stir well, and age at 80°C for 2 hours; then add 50 parts by weight of polyvinyl acetate emulsion and 5 parts by weight of calcium stearate, and stir well , heat-preserve at 80°C for 1 hour; then lower the temperature to 60°C, add 10 parts by weight of magnesium oxide under stirring, and mix evenly to obtain the water glass adhesive of the present invention.

Embodiment 2

[0028] Heat 135 parts by weight of deionized water to 80°C, slowly add 15 parts by weight of polyethylene glycol 600, stir well until the polymer dissolves, and make a solution of polyethylene glycol 600 with a mass fraction of 10%; The mass fraction of 40% potassium water glass is slowly added in the above solution, fully stirred evenly, and aged at 70°C for 3h; then add 30 parts by weight of polyvinyl acetate emulsion and 3 parts by weight of aluminum palmitate, fully After stirring evenly, heat-preserve at 60°C for 2 hours; then lower the temperature to 50°C, add 6 parts by weight of calcium oxide under stirring, and mix well to obtain the water glass adhesive of the present invention.

Embodiment 3

[0030] Heat 180 parts by weight of deionized water to 70°C, slowly add 20 parts by weight of polyethylene glycol 400, stir well until the polymer is dissolved, and make a solution of polyethylene glycol 400 with a mass fraction of 10%; Slowly add lithium water glass with a mass fraction of 45% to the above solution, stir well, and age at 50°C for 4 hours; then add 20 parts by weight of polyacrylate emulsion and 2 parts by weight of ammonium palmitate, and stir well After uniformity, heat-preserve and react at 50°C for 3 hours; then lower the temperature to 40°C, add 4 parts by weight of copper oxide under stirring, and mix uniformly to obtain the water glass adhesive of the present invention.

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Abstract

The invention discloses a low-cost environment-friendly water glass wood adhesive which comprises components of 100 parts of water glass with the mass percentage of 30-60%, 10-30 parts of a water-soluble polymer, 90-270 parts of deionized water, 10-50 parts of a high polymer emulsion, 1-5 parts of advanced fatty acid salt and 2-10 parts of an inorganic solidifying agent. Simultaneously, the invention further discloses a preparation method of the water glass wood adhesive. The preparation method includes heating the deionized water, slowly adding the deionized water to the water-soluble polymer, stirring the mixture to obtain a solution, adding the water glass to the solution, evenly stirring the solution to perform an aging reaction, adding the high polymer emulsion and the advanced fatty acid salt after the aging, and preserving heat after stirring at the temperature of 40-80 DEG C; and then cooling the mixture to the temperature of 30-60 DEG C, adding the inorganic solidifying agent, and evenly mixing the mixture to obtain the low-cost environment-friendly water glass wood adhesive. The water glass wood adhesive is stable in performance, simple and easy in preparation process and widely applicable to industrialization production.

Description

technical field [0001] The invention relates to a wood adhesive, in particular to a low-cost environmental-friendly water glass wood adhesive with strong adhesive force and good water resistance and a preparation method thereof. Background technique [0002] In the existing environmental protection decoration industry, with the increasing awareness of environmental protection and the strict restrictions on the content of aldehyde toxic compounds and other volatile organic compounds in adhesives in various countries around the world, wood adhesives are gradually getting rid of the use of urea-formaldehyde resins. Traditional aldehyde adhesives dominated by phenolic resins, phenolic resins and melamine-formaldehyde resins are developing rapidly in the direction of water-based, low-pollution, and environmentally friendly adhesives. The development of environmentally friendly high-performance adhesives has become a research hotspot in the field of wood adhesives. [0003] Inorg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J1/02C09J11/08C09J11/04C09J11/06
Inventor 张新荔吴义强李新功李贤军胡云楚刘晓梅卿彦姚春花杨守禄罗莎杨建铭朱晓丹龙科泉
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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