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A kind of water-based antibacterial coating and preparation method thereof

A water-based, water-based emulsion technology, applied in antifouling/underwater coatings, coatings, paints containing biocide, etc., can solve the problems of weakened antibacterial ability, low effective concentration, and inability to achieve long-term antibacterial ability. Achieve the effects of excellent adhesion and flexibility, good color development, and excellent heat transfer

Active Publication Date: 2022-03-11
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When there are too many dead cell walls remaining on the surface of the paint film, the antibacterial group of the quaternary ammonium salt can no longer directly contact the bacteria, resulting in a significant weakening of the antibacterial ability
Therefore, although the quaternary ammonium salt antibacterial substances have a low effective concentration and quick effect, and have good bactericidal ability against bacteria and molds, they cannot achieve long-term antibacterial ability.

Method used

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  • A kind of water-based antibacterial coating and preparation method thereof
  • A kind of water-based antibacterial coating and preparation method thereof
  • A kind of water-based antibacterial coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0060] Preparation of flower-like nano titanium dioxide modified by silane

[0061] Disperse 75g of flower-shaped nano-titanium dioxide in a mixed solution of 135g of ethanol and 100g of deionized water, sonicate for 15min, add 0.8g of γ-methacryloxypropyltrimethoxysilane (KH-570) and continue to sonicate for 30min , transfer the obtained suspension to a microwave hydrothermal kettle, microwave hydrothermal heating at 50°C for 30 minutes, so that the silane coupling agent is rapidly hydrolyzed and combined on the surface of the flower-shaped nano-titanium dioxide, and after cooling to room temperature, the suspension is Filter and rinse with deionized water to obtain silane-modified flower-like nano-titanium dioxide.

[0062] Preparation of shell pre-emulsion

[0063] It is obtained by controlling the dropping process in the preparation method of the water-based acrylic polymer emulsion used. Weigh 30g of methyl methacrylate and 18g of butyl acrylate, 4g of acrylic acid, 5g ...

preparation Embodiment 2

[0068] Preparation of Flower-like Nano-TiO2-Acrylic Resin Composite Particles B

[0069] Silane-modified flower-shaped nano-titanium dioxide was prepared according to Preparation Example 1.

[0070] Preparation of shell pre-emulsion

[0071] It is obtained by controlling the dropping process in the preparation method of the water-based acrylic polymer emulsion used. Weigh 30g of methyl methacrylate and 15g of butyl acrylate, 3g of acrylic acid, 2.5g of vinyltrimethoxysilane, 4g of sodium dodecylbenzenesulfonate, 64g of deionized water, stir and pre-emulsify After 60 min, the shell layer pre-emulsion was obtained.

[0072] The initiator that takes by weighing 0.4g is dissolved with 10g deionized water, obtains initiator solution;

[0073] Stir 24.4g of deionized water, 2.6g of sodium dodecylbenzene sulfonate and 60g of silane-modified flower-like nano-titanium dioxide as a core layer pre-emulsion. When the temperature rises to 80°C, drop The time for adding the initiator so...

preparation Embodiment 3

[0075] Preparation of Flower-like Nano-TiO2-Acrylic Resin Composite Particles C

[0076] Silane-modified flower-shaped nano-titanium dioxide was prepared according to Preparation Example 1.

[0077] Preparation of shell pre-emulsion

[0078] It is obtained by controlling the dropping process in the preparation method of the water-based acrylic polymer emulsion used. Weigh 30g of methyl methacrylate and 5g of butyl acrylate, 1.5g of acrylic acid, 1.5g of vinyltrimethoxysilane, 1.5g of sodium dodecylbenzenesulfonate, 50g of deionized water, and stir Pre-emulsified for 60 minutes to obtain a shell pre-emulsion.

[0079] The initiator that takes 0.75 is dissolved with 10g deionized water, obtains initiator solution;

[0080] Stir 22.4g of deionized water, 2.6g of sodium lauryl sulfate and 60g of silane-modified flower-shaped nano-titanium dioxide to make a core layer pre-emulsion. The time for adding the agent solution and 23g of the shell pre-emulsion is 3 hours, and the reac...

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Abstract

The invention relates to a water-based antibacterial paint and a preparation method thereof, in particular to a water-based antibacterial solid-color paint for children's toys. The water-based antibacterial coating comprises the following components: water-based emulsion, 50 parts by weight; flower-like nano titanium dioxide-acrylic resin composite particles, 20 to 34 parts by weight; film-forming aid, 1 to 4 parts by weight; water-based auxiliary agent, 1 to 3 parts by weight 6 parts by weight; water-based color paste, 1 to 4 parts by weight; deionized water, 2 to 50 parts by weight. The flower-like nano-titanium dioxide-acrylic resin composite particle has a "core-shell" structure, wherein the silane-modified flower-like nano-titanium dioxide serves as the core layer, and the organosilicon-modified acrylic polymer serves as the shell layer. The water-based antibacterial coating of the present invention has excellent antibacterial properties and also has excellent thermal transfer properties.

Description

technical field [0001] The invention relates to a water-based antibacterial paint and a preparation method thereof, in particular to a water-based antibacterial children's toy solid color paint and a preparation method thereof. The water-based antibacterial children's toy solid color paint is a kind of paint suitable for toys, especially various wooden Environmentally friendly and non-toxic water-based antibacterial children's toy solid color paint for toys. Background technique [0002] With the improvement of people's awareness of environmental protection and their own health, people pay more attention to how to effectively reduce the adverse effects of bacteria on life and reduce the probability of disease occurrence in daily behavior. Therefore, antibacterial material products, especially antibacterial materials that are easier to touch directly, have gradually come into people's field of vision, and antibacterial coatings have emerged as the times require. Compared wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/14C09D133/12C09D7/63C08F220/14C08F220/18C08F220/06C08F230/08C08F2/44C08K9/06C08K7/00C08K3/22
CPCC09D5/14C09D143/04C09D7/63C08F220/14C08F2/44C08K9/06C08K7/00C08K3/22C08K2201/011C08K2003/2241C08K2201/014C08K13/06C08K5/06C08F220/1804C08F220/06C08F230/085
Inventor 杨瑶瑶孙伟祖邓俊英
Owner WANHUA CHEM GRP CO LTD
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