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Aqueous adhesive and preparation method thereof

A technology of water-based adhesives and additives, applied in the direction of adhesives, adhesive additives, monocarboxylic acid ester copolymer adhesives, etc., can solve the problems of insufficient adhesion, poor water resistance, singleness, etc., and achieve moderate cost and water resistance Good performance, the effect of expanding production and application

Inactive Publication Date: 2012-07-25
BINZHOU POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The water-based adhesives currently on the market are basically composed of a single emulsion and auxiliary materials. Water-based adhesives compounded with ethylene-vinyl acetate copolymer (EVA) emulsions, polyurethane (PU) emulsions, and other emulsions have not yet been used. in production
At present, water-based adhesives have the problems of poor water resistance and insufficient cohesive force because they are all single components.

Method used

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  • Aqueous adhesive and preparation method thereof
  • Aqueous adhesive and preparation method thereof
  • Aqueous adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A water-based adhesive, with ethylene-vinyl acetate copolymer emulsion and polyurethane emulsion as main raw materials, and its components are by weight:

[0027] 20 parts of ethylene-vinyl acetate copolymer emulsion, 20 parts of polyurethane emulsion, 25 parts of polyvinyl alcohol solution, CaCO 334 parts, 0.3 parts of defoamer, 0.3 parts of bactericide, 0.4 parts of surfactant.

[0028] The method for preparing described water-based adhesive, concrete steps are as follows:

[0029] (1) Add polyvinyl alcohol solid powder into hot water at 90°C, stir for 30 minutes to dissolve it, and obtain a polyvinyl alcohol solution with a mass fraction of 25%, let it stand still, and cool it down to room temperature for later use;

[0030] (2) Add ethylene-vinyl acetate copolymer emulsion and polyurethane emulsion in proportion to the flask, stir at 500rpm for 15min, and add triethanolamine to adjust the pH of the system to 6-7;

[0031] (3) Add polyvinyl alcohol solution with a ...

Embodiment 2

[0033] A water-based adhesive, with ethylene-vinyl acetate copolymer emulsion and polyurethane emulsion as main raw materials, and its components are by weight:

[0034] 25 parts of ethylene-vinyl acetate copolymer emulsion, 23.5 parts of polyurethane emulsion, 30 parts of polyvinyl alcohol solution, CaCO 3 20 parts, 0.45 parts of defoamer, 0.45 part of bactericide, 0.6 part of surfactant.

[0035] The method for preparing described water-based adhesive, concrete steps are as follows:

[0036] (1) Add polyvinyl alcohol solid powder into hot water at 90°C, stir for 30 minutes to dissolve it, and obtain a polyvinyl alcohol solution with a mass fraction of 25%, let it stand still, and cool it down to room temperature for later use;

[0037] (2) Add ethylene-vinyl acetate copolymer emulsion and polyurethane emulsion in proportion to the flask, stir at 500rpm for 15min, and add triethanolamine to adjust the pH of the system to 6-7;

[0038] (3) Add polyvinyl alcohol solution with...

Embodiment 3

[0040] A water-based adhesive, with ethylene-vinyl acetate copolymer emulsion and polyurethane emulsion as main raw materials, and its components are by weight:

[0041] 22 parts of ethylene-vinyl acetate copolymer emulsion, 25 parts of polyurethane emulsion, 27 parts of polyvinyl alcohol solution, CaCO 3 25.65 parts, 0.105 parts of defoamer, 0.105 parts of bactericide, and 0.14 parts of surfactant.

[0042] The method for preparing described water-based adhesive, concrete steps are as follows:

[0043] (1) Add polyvinyl alcohol solid powder into hot water at 90°C, stir for 30 minutes to dissolve it, and obtain a polyvinyl alcohol solution with a mass fraction of 25%, let it stand still, and cool it down to room temperature for later use;

[0044] (2) Add ethylene-vinyl acetate copolymer emulsion and polyurethane emulsion in proportion to the flask, stir at 500rpm for 15min, and add triethanolamine to adjust the pH of the system to 6-7;

[0045] (3) Add polyvinyl alcohol sol...

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Abstract

The invention discloses an aqueous adhesive and a preparation method thereof. The aqueous adhesive is prepared by taking an EVA DA-103 emulsion and a PU DISEPRCOLL U54 emulsion as main raw materials, taking CaCO3 as a filling material, taking polyvinyl alcohol as a thickening agent and adding fewer additives according to a reasonable proportion. The aqueous adhesive disclosed by the invention does not contain an organic solvent, has no pungent odors and is green and environmentally-friendly; and the aqueous adhesive has the advantages of strong adhesion strength, short curing time, excellent construction performance, excellent water resistance, moderate cost and strong market competitiveness. Therefore, the production and the application of the aqueous adhesive are propelled, and the aqueous adhesive and the preparation method thereof have an application value and an economic value.

Description

technical field [0001] The invention relates to an adhesive and a preparation method thereof, in particular to a water-based adhesive and a preparation method thereof. Background technique [0002] With the development of industry, the application market of adhesives is becoming more and more extensive, and the varieties are also increasing. Commonly used adhesives mainly include solvent-based, water-based, and hot-melt adhesives. At present, since solvent-based adhesives use volatile organic compounds such as benzene and toluene as solvents, the production of solvent-based adhesives is shrinking day by day due to the problems of toxicity and environmental pollution during use. Hot-melt adhesives are coated in a molten state and bonded when cooled to a solid state. They are mainly used for low-strength, porous materials such as paper and cloth, and need to be developed to improve strength and other high-performance aspects. About 50% of water-based adhesives are composed o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J129/04C09J123/08C09J131/04C09J175/04C09J11/04
Inventor 霍宁波齐建桑海峰
Owner BINZHOU POLYTECHNIC
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