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High-gloss water-based vacuum plastic suction adhesive and preparation method thereof

A vacuum absorption, water-based technology, applied in the direction of adhesives, polymer adhesive additives, adhesive types, etc., can solve the problems of low production volume and low production efficiency, improve surface flatness, delay Benard effect of effect

Active Publication Date: 2022-03-29
福建华夏蓝新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because many blister boards have personalized patterns such as carvings and hollowing out, the production volume is not high. If glue film is used instead of spray glue, it will not be possible to use machines to prepare film patterns on a large scale or machine cut film. Can only be done manually, which will greatly reduce production efficiency

Method used

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  • High-gloss water-based vacuum plastic suction adhesive and preparation method thereof
  • High-gloss water-based vacuum plastic suction adhesive and preparation method thereof

Examples

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preparation example Construction

[0024] The preparation method of the modified polyurethane dispersion is as follows: react β-cyclodextrin, propylene oxide and ethylene oxide to generate polyether modified cyclodextrin, add alkyl glycidyl ether and react to obtain alkyl polyether ring Dextrin, then adding p-toluenesulfonyl chloride and diamine compound in turn to react respectively to obtain diamine-modified alkyl polyether cyclodextrin, and then adding polyurethane prepolymer to obtain modified polyurethane dispersion.

[0025] It can be seen from the above description that the beneficial effect of the present invention is that the polyoxypropylene and polyoxyethylene ether segments in the diamine-modified alkyl polyether cyclodextrin can reduce the surface tension, and at the same time, it can be adjusted by adjusting the ethylene oxide and cyclodextrin The ratio of oxypropane reached the hydrophilic-hydrophobic balance; alkyl-bonded polyoxypropylene and polyoxyethylene ether were more hydrophobic segments. ...

Embodiment 1

[0042] A high-gloss water-based vacuum-absorbing plastic, comprising by weight, modified water-based polyurethane dispersion 400g, modified polyethylene-vinyl acetate emulsion 600g and 5g thickener;

[0043] The raw materials of the modified water-based polyurethane dispersion include parts by weight: 1000g beta-cyclodextrin, 1g catalyst zinc hexacyanocobaltate, 200g propylene oxide, 80g ethylene oxide, 1000g solvent xylene, 150g octyl glycidyl ether, 1g catalyst boron trifluoride ether, 1g1mol / L potassium hydroxide aqueous solution; 2000g N,N-dimethylformamide, 40g solid potassium hydroxide, 180g p-toluenesulfonyl chloride, 500g hexamethylenediamine, 5000g toluene; 1000g dihydroxy compound ; 180g 4,4'-diphenylmethane diisocyanate, 10g hydrophilic agent 2-(2-aminoethyl) sodium taurine, appropriate amount of acetone;

[0044] Wherein, the bishydroxyl compound is polyoxypropylene diol and poly(neopentyl glycol hexanediol adipate) diol with an average molecular weight of 2000 Da....

Embodiment 2

[0057] A high-gloss water-based vacuum-absorbing adhesive, comprising, by weight, 500 g of a modified water-based polyurethane dispersion, 500 g of modified polyethylene-vinyl acetate emulsion and 1 g of a thickener;

[0058] The raw materials of the modified water-based polyurethane dispersion include parts by weight: 1000g β-cyclodextrin, 6g catalyst zinc hexacyanocobaltate, 440g propylene oxide, 160g ethylene oxide, 1000g solvent xylene, 120g butyl glycidyl ether, 1g catalyst boron trifluoride ether, 10g1mol / L potassium hydroxide aqueous solution; 2000g N,N-dimethylformamide, 56g solid potassium hydroxide, 250g p-toluenesulfonyl chloride, 400g isophoronediamine, 5000 parts toluene; 1000g dihydroxy compound; 130g hexamethylene diisocyanate, 20g hydrophilic agent 2-(2-aminoethyl) sodium taurine, appropriate amount of acetone;

[0059] Wherein, the dihydroxy compound is tetrahydrofuran ether diol and polyhexamethylene adipate diol with an average molecular weight of 2000 Da. ...

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Abstract

The invention belongs to the technical field of water-based adhesives, and particularly relates to a preparation method of a high-gloss water-based vacuum plastic suction adhesive, which comprises the following steps: mixing 400-600 parts by weight of modified polyethylene-vinyl acetate emulsion with the alcoholysis degree of 5-10% and 400-600 parts by weight of modified polyurethane dispersion, adding 1-5 parts by weight of a thickening agent, adjusting to proper viscosity, adding 1-5 parts by weight of a defoaming agent, and uniformly stirring to obtain the high-gloss water-based vacuum plastic suction adhesive. The high-gloss water-based vacuum plastic suction glue is obtained. The modified polyethylene-vinyl acetate emulsion with the alcoholysis degree of 5-10% is obtained by controlling hydrolysis, the modified polyurethane dispersoid takes diamine modified polyether cyclodextrin as a chain extender and an intramolecular leveling agent, and is matched with the modified polyethylene-vinyl acetate emulsion for use, so that the surface tension difference is reduced, the liquid flow in an adhesive layer is reduced, and the adhesion between the adhesive layer and the modified polyethylene-vinyl acetate emulsion is improved. Benard vortexes are inhibited, and the surface roughness of the adhesive layer is reduced. The high-gloss water-based vacuum blister glue board prepared by the method is good in effect, excellent in binding power and high in heat resistance.

Description

technical field [0001] The invention belongs to the technical field of water-based adhesives, and in particular relates to a preparation method of high-gloss water-based vacuum-absorbing plastics. Background technique [0002] Water-based vacuum plastic is widely used in lamination of soft film such as PVC and density board, particle board, wood and other materials. Generally, water-based vacuum plastics are applied by spraying. The droplets of the glue are atomized by high-pressure gas and become fine droplets and sprayed on the board to be bonded. After the water in the droplets volatilizes, the plastic can be blistered. When blistering, the PVC film is heated and softened, close to the board, the air between the PVC film and the board is sucked out by vacuum, and the PVC film is tightly pasted on the board by atmospheric pressure. Since various decorations can be printed on the PVC film, the board produced by the vacuum blister process presents an aesthetic feeling that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J123/26C09J11/08
CPCC09J175/08C09J11/08C08L23/26
Inventor 邱元进郭明德林学辉陈国栋
Owner 福建华夏蓝新材料科技有限公司