Antibacterial mildew-resistant water-curable polyurethane building waterproof paint, and preparation method thereof

An antibacterial, mildew-proof and building waterproof technology, which is applied in the preparation of antibacterial and mildew-proof water-curable polyurethane architectural waterproof coatings, and in the field of antibacterial and mildew-proof water-curable polyurethane architectural waterproof coatings, which can solve the problem of uneven quality of waterproof coatings and short service life of coatings , mildew and deterioration of the coating, etc., to achieve the effect of improving loss resistance and long-term performance, excellent antibacterial and mildew resistance, and improving surface hydrophobicity

Inactive Publication Date: 2019-11-08
巩义市弘盛管道设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the quality of the existing polyurethane waterproof coatings for buildings varies. In areas near rivers, lakes and seas and in humid and rainy seasons, the coatings will still experience mildew and deterioration. In the light cases, the coating will cause bubbling and discoloration, and in severe cases, the coating will be pulverized and peeled off. , causing the base layer to be exposed and the water seepage phenomenon to be more serious
In order to solve the above problems, some waterproof coatings are physically mixed with antibacterial agents, antifungal agents, etc. These substances can only work temporarily in the initial stage of the coating. The ingredients will be lost and invalidated quickly, and it cannot achieve long-term antibacterial and anti-mildew effects, resulting in a short service life of the coating and repeated repairs

Method used

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  • Antibacterial mildew-resistant water-curable polyurethane building waterproof paint, and preparation method thereof
  • Antibacterial mildew-resistant water-curable polyurethane building waterproof paint, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The preparation method of the antibacterial and mildew-proof type water-based polyurethane emulsion of the architectural waterproof coating of the present embodiment may further comprise the steps:

[0043] 1) tetradecyl dimethyl benzyl ammonium chloride and bis-octyl dimethyl ammonium chloride are dissolved in water to make a total mass concentration of 10.0% quaternary ammonium salt solution, wherein, tetradecyl di The molar ratio of methyl benzyl ammonium chloride to dialkyl dimethyl ammonium chloride is 1.5:1; take sodium-based montmorillonite and disperse it in water to make a suspension with a mass concentration of 10.0%, and set aside;

[0044] According to the molar ratio of the cation exchange capacity of the quaternary ammonium salt and the sodium montmorillonite being 2.0:1, the quaternary ammonium salt solution was mixed with the suspension at 80° C., stirred and reacted for 6.0 h, filtered to obtain a solid product, and Wash with ethanol water to free of Cl...

Embodiment 2

[0050] The preparation method of the antibacterial and mildew-proof type water-based polyurethane emulsion of the architectural waterproof coating of the present embodiment may further comprise the steps:

[0051] 1) tetradecyl dimethyl benzyl ammonium chloride and bis-octyl dimethyl ammonium chloride are dissolved in water to make a total mass concentration of 10.0% quaternary ammonium salt solution, wherein, tetradecyl di The molar ratio of methyl benzyl ammonium chloride to dialkyl dimethyl ammonium chloride is 1.7:1; take sodium montmorillonite and disperse it in water to make a suspension with a mass concentration of 10.0%, and set aside;

[0052] According to the molar ratio of the cation exchange capacity of the quaternary ammonium salt and the sodium montmorillonite being 1.8:1, the quaternary ammonium salt solution was mixed with the suspension at 85°C, stirred and reacted for 4.0h, and the solid product was obtained by filtration and used Wash with ethanol water to f...

Embodiment 3

[0058] The preparation method of the antibacterial and mildew-proof type water-based polyurethane emulsion of the architectural waterproof coating of the present embodiment may further comprise the steps:

[0059] 1) tetradecyl dimethyl benzyl ammonium chloride and bis-octyl dimethyl ammonium chloride are dissolved in water to make a total mass concentration of 10.0% quaternary ammonium salt solution, wherein, tetradecyl di The molar ratio of methyl benzyl ammonium chloride to dialkyl dimethyl ammonium chloride is 2.0:1; take sodium montmorillonite and disperse it in water to make a suspension with a mass concentration of 10.0%, and set aside;

[0060] According to the molar ratio of the cation exchange capacity of the quaternary ammonium salt and the sodium montmorillonite being 1.8:1, the quaternary ammonium salt solution was mixed with the suspension at 80° C., stirred and reacted for 5.0 h, filtered to obtain a solid product, and Wash with ethanol water to free of Cl - , ...

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Abstract

The invention relates to an antibacterial mildew-resistant water-curable polyurethane building waterproof paint, and a preparation method thereof. The antibacterial mildew-resistant water-curable polyurethane building waterproof paint is prepared from following steps: 1, a quaternary ammonium salt solution and a montmorillonite fluid suspension are mixed and reacted to prepare organic montmorillonite; 2, the organic montmorillonite is modified with KH-570 to obtain modified organic montmorillonite; and 3, a polyether dihydric alcohol, a polyether trihydric alcohol, and the modified organic montmorillonite are mixed, diphenylmethane diisocyanate is added for reaction to prepare a modified polyurethane prepolymer; liquid petroleum resin, a plasticizer, water and a catalyst, a dispersant, anantifoaming agent, and an auxiliary agent are mixed, an obtained mixture, calcium hydrate, the modified organic montmorillonite, and a pigment filling material are mixed and grinded to obtain a curingcomponent. In using, the modified polyurethane prepolymer and the curing component are mixed at a mass ratio of 1:1.6-2.0. The antibacterial mildew-resistant water-curable polyurethane building waterproof paint is excellent in performance, the antibacterial performance and mildew resistance are excellent and last long, and using requirements of I type building waterproof paint A type products aresatisfied.

Description

technical field [0001] The invention belongs to the technical field of architectural waterproof coatings, in particular to an antibacterial and anti-mildew type water-curable polyurethane architectural waterproof coating, and also relates to a preparation method of an anti-bacterial and anti-mildew type water-curable polyurethane architectural waterproof coating. Background technique [0002] Building waterproofing refers to the defensive measures taken on the outer protective structure, roof, wall and basement in order to avoid the harm of water to the building. The main function is to prevent moisture, seepage and leakage, and ensure the normal use function of the building. , prolong its service life. In areas near rivers, lakes and seas and in humid and rainy seasons, many existing buildings will suffer from roof leaks, wall seepage, ground water, and underground water. Long-term leakage, flooding, and wet tops, walls, and floors will Cause bacterial reproduction, mildew...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D5/14C09D7/65
CPCC09D5/14C09D175/08C09D7/65C08L57/02C08K9/06C08K9/04C08K3/346
Inventor 卢俊杰
Owner 巩义市弘盛管道设备有限公司
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