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A kind of organic attapulgite modified water-based laminating adhesive and preparation method thereof

A technology of water-based laminating adhesive and attapulgite, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problems of low adhesion, poor heat resistance, etc., and achieve cohesion Large, improved dispersibility, good heat resistance

Inactive Publication Date: 2016-04-06
BAOJI UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low adhesion and poor heat resistance of pure water-based polyurethane laminating adhesives on plastic films, the modification of water-based polyurethane has become a hot spot.

Method used

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  • A kind of organic attapulgite modified water-based laminating adhesive and preparation method thereof
  • A kind of organic attapulgite modified water-based laminating adhesive and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A water-based laminating adhesive modified by organic attapulgite, comprising 20% ​​polymer polyol, 1% organically modified attapulgite, 20% polyisocyanate compound, and 9% chain extender by mass percentage , 5% neutralizer and 45% deionized water.

[0034] The preparation method of the water-based film-coating glue modified by the above-mentioned organic attapulgite comprises the following steps:

[0035] 1) Mix and stir the original soil with a particle size of 20-40nm and a length of 1-2m and one-dimensional fibrous crystals with double distilled water, then settle, take the upper suspension, filter it with suction, and dry it to obtain purified attapulgite Add the purified attapulgite to hydrochloric acid with a concentration of 2mol / L, and the volume ratio of the purified attapulgite to hydrochloric acid is 1:10, heat to reflux for 8h, and centrifuge after cooling, rinse the resulting solid with distilled water until neutral, vacuum Dried to obtain acidified attap...

Embodiment 2

[0039]A water-based laminating adhesive modified by organic attapulgite, comprising 23% polymer polyol, 0.1% organically modified attapulgite, 18.9% polyisocyanate compound, and 6% chain extender by mass percentage , 2% neutralizer and 50% deionized water.

[0040] The preparation method of the water-based film-coating glue modified by the above-mentioned organic attapulgite comprises the following steps:

[0041] 1) Mix and stir the original soil with a particle size of 20-40nm and a length of 1-2m and one-dimensional fibrous crystals with double distilled water, then settle, take the upper suspension, filter it with suction, and dry it to obtain purified attapulgite Add the purified attapulgite to sulfuric acid with a concentration of 3mol / L, and the volume ratio of the purified attapulgite to hydrochloric acid is 1:10, heat to reflux for 6h, and centrifuge after cooling, rinse the obtained solid with distilled water until neutral, vacuum Dried to obtain acidified attapulgi...

Embodiment 3

[0045] A water-based laminating adhesive modified by organic attapulgite, comprising 14% polymer polyol, 2% organically modified attapulgite, 15% polyisocyanate compound, and 9% chain extender by mass percentage , 5% neutralizer and 55% deionized water.

[0046] The preparation method of the water-based film-coating glue modified by the above-mentioned organic attapulgite comprises the following steps:

[0047] 1) Mix and stir the original soil with a particle size of 20-40nm and a length of 1-2m and one-dimensional fibrous crystals with double distilled water, then settle, take the upper suspension, filter it with suction, and dry it to obtain purified attapulgite Add the purified attapulgite to nitric acid with a concentration of 4mol / L, and the volume ratio of the purified attapulgite to hydrochloric acid is 1:10, heat and reflux for 7h, and centrifuge after cooling, rinse the resulting solid with distilled water until neutral, vacuum Dried to obtain acidified attapulgite;...

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Abstract

The invention discloses an organic-attapulgite-modified water-based laminating adhesive and a preparation method thereof. The adhesive comprises 14-23% of a polymer polyol, 12-22% of a polyisocyanate compound, 0.1-2% of organic modified attapulgite, 2-9% of a chain extender, 2-5% of a neutralizer and 45-55% of deionized water. The polymer polyol, a diisocyanate compound, the attapulgite and the hydrophilic chain extender are used as main raw materials, and the organic-attapulgite-modified water-based laminating adhesive is obtained with a step-growth polymerization synthesis technology. The prepared laminating adhesive takes water as a solvent and has the advantages of large adhesive force, high peeling strength, good heat resistance and environment-friendliness.

Description

technical field [0001] The invention belongs to the field of polymer material preparation, and relates to a water-based laminating glue modified by organic attapulgite and a preparation method thereof. Background technique [0002] Attapulgite is a layer chain hydrous magnesium-rich silicate mineral, which has a special layer chain crystal structure and a large number of micropores, and is easier to dissociate and disperse, so it is very suitable as a filler material for polymer matrix . However, nano-attapulgite has high surface energy and surface activity, so it is easy to agglomerate in the polymer matrix. In order to improve the dispersion ability of nano-attapulgite and at the same time enhance the bonding force between nanomaterials and polymer interfaces, it is usually necessary to modify nano-attapulgite to improve the affinity between nanoparticles and organic phase and weaken the surface polarity of nanoparticles. . [0003] Water-based laminating glue replaces ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/06C09J175/08C09J175/04C09J11/04
Inventor 黄卓楠杜娟
Owner BAOJI UNIV OF ARTS & SCI
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