Polyurethane acrylate adhesive containing ionic groups and preparation method thereof

A technology of polyurethane acrylate and ionic groups, which is applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve problems such as unsuitability, increased energy consumption, and complicated curing process, and achieves increased mechanical strength. The effect of strength, high strength and toughness

Inactive Publication Date: 2011-02-16
上海材料研究所靖江先进材料技术研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water emulsion type urethane acrylate must be volatilized before ultraviolet light curing, otherwise the existence of water will affect the curing effect of the film, which will complicate the curing process and increase energy consumption
Therefore not suitable for use as an adhesive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 141.3g of polybutylene adipate neopentyl glycol ester with a relative molecular weight of 1500 and a functionality of 2 and 41.9g of polyoxypropylene triol with a relative molecular weight of 1000 and a functionality of 3 are packed into a 500ml three-necked flask , after vacuum dehydration at 110° C. for 1 h, 10.2 g of dimethylol butyric acid was added, and dehydration was continued at 105° C. for 15 min. Then cool down to 60°C, add 100g of isophorone diisocyanate and 0.2g of dibutyltin dilaurate, stir and react at 80°C for 4h, cool down to 55°C, add 47.4g of hydroxyethyl acrylate and 0.1g of terephthalate Phenol, react at 55°C for 3h, so that the terminal NCO group is completely blocked. Bring the reactants below 40°C, add 2.75g of sodium hydroxide for neutralization, and continue stirring for 30 minutes to obtain a polyurethane acrylate polymer with ionic groups.

[0051] Take 26.0g of the above-mentioned polyurethane acrylate polymer with ionic groups, add 11.0g of...

Embodiment 2

[0053]141.3g of polybutylene adipate neopentyl glycol ester with a relative molecular weight of 1500 and a functionality of 2 and 41.9g of polyoxypropylene triol with a relative molecular weight of 1000 and a functionality of 3 are packed into a 500ml three-necked flask , after vacuum dehydration at 110° C. for 1 h, add 13.3 g of sodium dihydroxybutanesulfonate, and continue dehydration at 105° C. for 15 min. Then cool down to 60°C, add 100g of isophorone diisocyanate and 0.2g of dibutyltin dilaurate, stir and react at 80°C for 4h, cool down to 55°C, add 47.4g of hydroxyethyl acrylate and 0.1g of terephthalate Phenol, react at 60°C for 3h, so that the terminal NCO group is completely blocked. That is, a polyurethane acrylate polymer with ionic groups is obtained.

[0054] Take 26.0g of the above-mentioned polyurethane acrylate polymer with ionic groups, add 11.0g of isobornyl acrylate, 3.0g of trimethylolpropane triacrylate, 1.5g of 1173, 2.0g of 184, 0.53g of Benzophenone a...

Embodiment 3

[0056] Put 87.5g of polyoxypropylene polyol with a relative molecular weight of 1300 and a functionality of 7 into a 500ml three-necked flask, dehydrate under vacuum at 110°C for 1 hour, add 15.3g of dimethylol butyric acid, and continue to dehydrate at 105°C Dehydrate for 15min. Then cool down to 60°C, add 150g of isophorone diisocyanate and 0.3g of dibutyltin dilaurate, stir and react at 80°C for 4h, cool down to 55°C, add 71.1g of hydroxyethyl acrylate and 0.2g of terephthalate Phenol, react at 60°C for 3h, so that the terminal NCO group is completely blocked. Bring the reactant below 40°C, add 4.1g of sodium hydroxide for neutralization, and continue stirring for 30 minutes to obtain a polyurethane acrylate polymer with ionic groups.

[0057] Take 26.0g of the above-mentioned polyurethane acrylate polymer with ionic groups, add 11.0g of isobornyl acrylate, 3.0g of trimethylolpropane triacrylate, 1.5g of 1173, 2.0g of 184, 0.53g of di Benzophenone and 0.5g of silane coupl...

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Abstract

The invention relates to a polyurethane acrylate adhesive containing ionic groups and a preparation method thereof. The adhesive comprises the following components in part by weight: 45 to 75 parts of macromolecular polyol, 1.5 to 3 parts of carboxylic acid compound or sulfonate, 15 to 30 parts of diisocyanate, 0.01 to 0.06 part of catalyst, 8 to 21 parts of monohydric alcohol containing acrylategroup and 0.01 to 0.06 part of free radical polymerization inhibitor. The method comprises the following steps of: adding the carboxylic acid compound or the sulfonate into the macromolecular polyol,adding the diisocyanate and the catalyst into the dehydrated mixture, heating the mixture, then adding the monohydric alcohol containing the acrylate group and the free radical polymerization inhibitor into the mixture, reacting the mixture to obtain a polyurethane acrylate polymer at a controlled temperature, and adding a mixture of diluent and initiator into the polymer to obtain a product. Compared with the prior art, because the adhesive contains the ionic groups, the adhesive has higher strength and toughness; and the multi-functionality macromolecular polyol also increases the mechanical strength of the adhesive.

Description

technical field [0001] The invention relates to the field of polyurethane adhesives, in particular to an ultraviolet-curable polyurethane acrylate adhesive containing ion groups and a preparation method thereof. Background technique [0002] UV-curable urethane acrylate is a polymer that undergoes chemical and physical changes in a short period of time after being irradiated by ultraviolet light. It has the characteristics of fast curing speed, energy saving, and excellent physical properties. In addition, it can be used in a wide range of substrates and does not contain volatile solvents. Therefore, it has received extensive attention. [0003] At present, the polyurethane acrylate cured by ultraviolet light can be roughly divided into solvent type, bulk type and water emulsion type. Because of the high toxicity and slow curing speed of solvent type, it has been gradually eliminated. At present, the body type and the water emulsion type are mostly used. Water-emulsion p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/32C08G18/67C09J175/16C08G18/42
Inventor 李仙会王佐祥吴佳林董俊伟
Owner 上海材料研究所靖江先进材料技术研究院
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