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Antibacterial non-ionic waterborne polyurethane and preparation method thereof

A water-based polyurethane and non-ionic technology, which is applied in antifouling/underwater coatings, coatings, paints containing biocide, etc., can solve the problems of low antibacterial durability and affect the stability of water-based polyurethane emulsion, and achieve antibacterial performance improvement , Improve the production and living environment, and prevent the spread of bacteria and viruses

Active Publication Date: 2020-01-07
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, it is necessary for the present invention to provide a kind of antibacterial nonionic water-based polyurethane and preparation method thereof, by carrying out double bond end-capping to PHMG through curing with water-based polyurethane Finally, PHMG is bonded into the polyurethane branch chain, and the whole molecular chain of PHMG is the branch chain has mobility, which greatly improves the antibacterial property of the coating, and solves the problem of PHMG affecting the stability of the water-based polyurethane emulsion in the prior art. Technical Problems of Low Antibacterial Durability of Simple Blend Coatings

Method used

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  • Antibacterial non-ionic waterborne polyurethane and preparation method thereof
  • Antibacterial non-ionic waterborne polyurethane and preparation method thereof
  • Antibacterial non-ionic waterborne polyurethane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Preparation of UV-curable non-ionic water-based polyurethane emulsion: R=1.5, 40g of polycaprolactone diol (PCL1000) and 7g of Ymer-N120 were added to the reactor for vacuum dehydration at 120°C for 2h, after cooling to 50°C, 15.6g was added Isophorone diisocyanate (IPDI) and 0.0027g stannous octoate were reacted at 80°C for 4h, adding an appropriate amount of acetone during the reaction to adjust the viscosity to 16.0mPa·s-30.0mPa·s; cooling down to 50°C, adding 6g of methacrylic acid Hydroxyethyl ester (HEMA), react at 55°C for 5h; cool down to 50°C, add 160g of deionized water for high-speed shear emulsification for 20min, and obtain UV-curable non-ionic water-based polyurethane emulsion after removing acetone;

[0043] Preparation of antibacterial non-ionic water-based polyurethane: Weigh 10 g of UV-curable non-ionic water-based polyurethane emulsion, add 0.09 g of photoinitiator 2-hydroxy-2-methyl-1-phenylacetone and 0.03 g of double-bond functionalized PHMG, Sonic...

Embodiment 2

[0046] Preparation of UV-curable non-ionic water-based polyurethane emulsion: R=1.5, add 40g of polycaprolactone diol (PCL1000) and 7g of Ymer-N120 into the reactor for vacuum dehydration at 120°C for 2h; after cooling down to below 50°C, add 15.6 g of isophorone diisocyanate (IPDI) and 0.0027g of stannous octoate, reacted at 80°C for 4 hours, during the reaction, add an appropriate amount of acetone to adjust the viscosity to 16.0mPa·s~30.0mPa·s; after cooling down to below 50°C, add 6g Hydroxyethyl methacrylate (HEMA), react at 55°C for 5h; cool down to below 50°C, add 160g of deionized water for high-speed shear emulsification for 20min, remove acetone to obtain UV-curable non-ionic water-based polyurethane emulsion;

[0047] Preparation of antibacterial non-ionic water-based polyurethane: Weigh 10 g of UV-curable non-ionic water-based polyurethane emulsion, add 0.09 g of photoinitiator 2-hydroxy-2-methyl-1-phenylacetone and 0.06 g of double-bond functionalized PHMG, Sonica...

Embodiment 3

[0053] Preparation of UV-curable non-ionic water-based polyurethane emulsion: R=1.5, 40 g of polycaprolactone diol (PCL1000) and 7 g of Ymer-N120 were added to the reactor for vacuum dehydration at 120 ° C for 2 h; the temperature was lowered to 50 ° C, and 15.6 g of iso Phorone diisocyanate (IPDI) and 0.0027g stannous octoate were reacted at 80°C for 4 hours, during the reaction, an appropriate amount of acetone was added to adjust the viscosity to 16.0mPa·s~30.0mPa·s; the temperature was lowered to 50°C, and 6g of methacrylic acid hydroxyl Ethyl ester (HEMA), react at 55°C for 5h; cool down to 50°C, add 160g of deionized water for high-speed shear emulsification for 20min, and obtain UV-curable non-ionic water-based polyurethane emulsion after removing acetone;

[0054] Preparation of antibacterial non-ionic water-based polyurethane: Weigh 10 g of UV-curable non-ionic water-based polyurethane emulsion, add 0.09 g of photoinitiator 2-hydroxy-2-methyl-1-phenylacetone and 0.09 g...

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Abstract

The invention discloses antibacterial non-ionic waterborne polyurethane and a preparation method thereof. The antibacterial non-ionic waterborne polyurethane is prepared from double-bond functionalized PHMG, an ultraviolet curing non-ionic waterborne polyurethane emulsion and a photoinitiator, wherein the double-bond functionalized PHMG is PHMG bonded with double bonds. The preparation comprises the following steps: carrying out a reaction of PHMG with a double-bond functionalized monomer to prepare double-bond functionalized PHMG; preparing an ultraviolet-cured non-ionic waterborne polyurethane emulsion by an acetone method, uniformly mixing the double-bond functionalized PHMG, the ultraviolet-cured non-ionic waterborne polyurethane emulsion and the photoinitiator, drying in a dark place,and irradiating by an ultraviolet lamp to obtain the antibacterial non-ionic waterborne polyurethane. PHMG is subjected to double-bond end capping and then is subjected to ultraviolet curing with waterborne polyurethane, then the PHMG is bonded into a polyurethane branched chain, the whole molecular chain, namely the branched chain, of the PHMG has mobility, and the antibacterial property of a coating layer is greatly improved.

Description

technical field [0001] The invention belongs to the field of functional polymer materials, and in particular relates to an antibacterial nonionic water-based polyurethane and a preparation method thereof. Background technique [0002] Water-based polyurethane (English abbreviation: WPU) is a polymer synthetic material. Its coating has excellent flexibility, mechanical strength, wear resistance, adhesion, chemical resistance and durability. It is widely used in coatings, leather, etc. Processing, wood processing, fabric finishing, building materials, papermaking, adhesives and other fields, it uses water as the dispersion medium, and has the advantages of non-toxic, non-flammable, non-polluting, energy-saving, safe and reliable. However, because WPU is rich in nutrients needed for microbial growth, when the external environment is suitable, microorganisms will multiply in large numbers, and its antibacterial performance is low. Even cationic WPU has limited antibacterial abil...

Claims

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Application Information

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IPC IPC(8): C08F299/06C08F2/48C09D155/00C09D5/14
CPCC08F299/065C08F2/48C09D155/005C09D5/14
Inventor 杨建军张孜文吴庆云吴明元张建安刘久逸
Owner ANHUI UNIVERSITY
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