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A kind of preparation method of cationic waterborne uv polyurethane acrylate self-antibacterial resin

A urethane acrylate, cationic technology, used in the field of urethane acrylate resin materials, can solve the problems of poor thermal decomposition resistance, poor tensile strength of the coating, unstable dispersion, etc., and achieves improved antibacterial properties and short curing time. , the effect of improving tensile strength and high temperature decomposition resistance

Active Publication Date: 2022-02-08
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is that the existing cationic water-based UV polyurethane acrylic resin has high amine value, unstable dispersion, poor coating tensile strength, poor self-antibacterial property, poor pyrolysis resistance, etc.

Method used

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  • A kind of preparation method of cationic waterborne uv polyurethane acrylate self-antibacterial resin
  • A kind of preparation method of cationic waterborne uv polyurethane acrylate self-antibacterial resin
  • A kind of preparation method of cationic waterborne uv polyurethane acrylate self-antibacterial resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Prepare raw materials according to the mass percentage of the total materials:

[0050] Resin component mass percent (wt.%): isophorone diisocyanate 38.3%, glycerol 7.2%, polycarbonate diol 22%, polycaprolactone diol 8%, polycaprolactone triol 3 %, lactic acid 1.5%, guanidinoacetic acid 1%, BICAT81180.9%, pentaerythritol triacrylate 9.7%, methacrylate-β-hydroxyethyl 0.3%, polyethylene glycol monomethyl ether 0.1%, N-methyl Diethanolamine 4%, photoinitiator 4%.

[0051] In a reactor equipped with reflux, heating and stirring devices, mix the isophorone diisocyanate, polycaprolactone triol, glycerol, BICAT8118 catalyst and solvent in the stated proportion evenly. Raise the temperature to 90°C to 100°C for mixed reaction, and continue the reaction at constant temperature for 3 hours. Under the condition of 60°C to 90°C, add the above-mentioned calculated amount of polycarbonate diol and polycaprolactone diol to the device, and continue the reaction at constant temperature...

Embodiment 2

[0057] Prepare raw materials according to the mass percentage of the total materials:

[0058] Resin component mass percent (wt.%): tetramethylxylylene diisocyanate 35%, glycerol 7.1%, polycaprolactone diol 20%, polycaprolactone triol 10%, polyethylene glycol Alcohol 7%, acetic acid 2.5%, guanidine propionic acid 0.5%, BICAT81080.5%, pentaerythritol triacrylate 5.7%, hydroxyethyl acrylate 3.5%, polyethylene glycol monomethyl ether 0.2%, diethanolamine 1%, N - Benzoylphenylhydroxylamine 2%, photoinitiator 5%.

[0059]In the reactor equipped with reflux, heating and stirring device, the tetramethylxylylene diisocyanate, polycaprolactone triol, glycerol, polycaprolactone triol, BICAT 8108 and Add the solvent and mix well. Raise the temperature to 90°C to 100°C for mixed reaction, continue the reaction at a constant temperature for 3 hours, and add the above-mentioned calculated amount of polycaprolactone diol and polyethylene glycol into the device at a temperature of 60°C to 9...

Embodiment 3

[0064] Prepare raw materials according to the mass percentage of the total materials:

[0065] Resin component mass percentage (wt.%): 16.2% of isophorone diisocyanate, 8.5% of tetramethylxylylene diisocyanate, 10.5% of diphenylmethane diisocyanate, 3.5% of N-methyldiethanolamine, N, N-dimethylethanolamine 1.5%, polycarbonate diol 5%, polypropylene glycol 23.6%, polycaprolactone triol 13%, acetic acid 1.5%, guanidinoacetic acid 4.5%, BICAT8108 0.7%, pentaerythritol triacrylic acid 7% ester, 0.5% polyethylene glycol monomethyl ether, 4% photoinitiator.

[0066] In a reactor equipped with reflux, heating and stirring devices, diphenylmethane diisocyanate, isophorone diisocyanate, tetramethylxylylene diisocyanate, polycaprolactone triol, Mix BICAT8108 and solvent evenly. Raise the temperature to 90°C to 100°C for mixed reaction, continue the reaction at a constant temperature for 3 hours, and add the above-mentioned calculated amount of polycarbonate diol and polypropylene glyc...

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Abstract

The invention discloses a preparation method of cationic water-based UV polyurethane acrylate self-antibacterial resin. First, mix and heat polyisocyanate, polyol compound, and catalyst to prepare an intermediate product containing 3 to 4 isocyanate (-NCO) groups; then add amine compound, hydroxyl-terminated vinyl compound to block, add organic acid 1. Photoinitiator to obtain hydrophilic resin, add water and stir at high speed to form a dispersion, and finally add additives to obtain cationic water-based UV self-antibacterial coating. The present invention aims at the problems of poor storage stability of ordinary cationic water-based UV paints, the need to add antibacterial agents, and weak antibacterial persistence. The prepared paint has high stability, excellent mechanical properties, tensile strength, and heat-resistant decomposition of the coating film; the preparation method of the present invention is novel , The steps are simple, non-toxic and odor-free; the rate of killing bacteria by itself exceeds 99%.

Description

technical field [0001] The invention relates to a preparation method of cationic water-based UV polyurethane acrylate self-antibacterial resin, belonging to the technical field of polyurethane acrylate resin materials. Background technique [0002] Due to its excellent mechanical properties, adjustable molecular structure and good biocompatibility, polyurethane is widely used in mechanical equipment, transportation equipment, floor venues, medical equipment and other fields. The Ministry of Industry and Information Technology issued the "Guidelines for the Development of Key Common Technologies in the Industry (2017)", which specifically proposed water-based polyurethane resins and downstream application technologies, including acrylate-modified water-based polyurethane technology, water-based polyurethane coating technology, and water-based solvent-free high-solid content foaming Polyurethane technology, etc. In these key areas, UV waterborne polyurethane is favored becaus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/67C08G18/66C08G18/44C08G18/48C08G18/42C08G18/32C08G18/34C08G18/30C09D175/14C09D5/14
Inventor 刘娅莉杜硕符余香邓秀琳袁松
Owner HUNAN UNIV
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