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Nano coating and preparation method thereof

A nano-coating and nano-silver technology, applied in antifouling/underwater coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as poor antibacterial durability, and achieve the effect of reducing agglomeration reaction, high efficiency and long-lasting antibacterial performance

Inactive Publication Date: 2010-02-24
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the defect of poor antibacterial and durable performance of nano-silver easily agglomerated coatings in the prior art, and provide a nano-coating with high-efficiency and durable antibacterial performance and its preparation method

Method used

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  • Nano coating and preparation method thereof

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preparation example Construction

[0024] The present invention also provides a kind of preparation method of above-mentioned nano-coating, comprises the following steps:

[0025] (1) Nano-silver and nano-titanium dioxide are mixed in a weight ratio of 1:5 to 8 to prepare nano-TiO 2 Silver-loaded composite materials;

[0026] (2) In the nano-TiO 2 Add additives to the silver-loaded composite material, disperse evenly, and grind to obtain a mixed slurry;

[0027] (3) Add emulsion into the mixed slurry, and disperse evenly to obtain nano coating.

[0028] In the preparation method provided by the present invention, the nano-titanium dioxide is acid-treated nano-titanium dioxide, and the acids used in the acid treatment are various inorganic acids known to those skilled in the art. In the present invention, nitric acid with a volume concentration of 63-68% is preferably used. The acid treatment method is a variety of acid treatment methods known to those skilled in the art, which will not be repeated here.

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Embodiment 1

[0045] This embodiment is used to illustrate the nano-coating provided by the present invention and its preparation method.

[0046] (1) Solution preparation: Weigh 0.4g nano-silver powder and add it to 100mL ethanol. After fully stirring for 45min, grind at high speed with a sand mill to make a nano-silver-ethanol mixture; weigh 0.5g rutile titanium dioxide powder, 1.0g Anatase titanium dioxide powder, added to 50mL HNO with a volume concentration of 65% 3 solution, fully stirred for 45 minutes, and then rinsed and filtered the titanium dioxide with distilled water until the filtrate was neutral to obtain acid-treated titanium dioxide.

[0047] (2) Nano-TiO 2 Preparation of silver-loaded composite material: Get 50g of prepared nano-silver-ethanol mixed solution and add it to acid-treated nano-titanium dioxide, add 0.02g fatty acid sodium methyl ester sodium sulfonate surfactant, stir and heat to fully react, and prepare Nanometer TiO 2 Silver loaded composites.

[0048] (...

Embodiment 2

[0050] This embodiment is used to illustrate the nano-coating provided by the present invention and its preparation method.

[0051] Adopt the same mode as embodiment 1 to prepare nano-coating, difference is:

[0052] Addition of emulsion: In step (3), 200 g of polyurethane was used to replace 600 g of hydroxyacrylic resin in Example 1.

[0053] The nano-coating that makes by above-mentioned method is denoted as A2.

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Abstract

The invention provides a nano coating and a preparation method thereof. The nano coating contains an emulsion, nano titanium dioxide and nano silver, wherein the nano silver is loaded on the surface of the nano titanium dioxide, and the weight ratio of te nano silver to the nano titanium dioxide is 1:5-8. In the preparation method of the nano coating, the nano silver is loaded on the surface of the nano titanium dioxide to reduce the agglomeration reaction of the nano silver so that the nano coating has efficient and lasting antibacterial performance.

Description

【Technical field】 [0001] The invention relates to a nano coating, in particular to a nano coating with efficient and durable antibacterial performance and a preparation method thereof. 【Background technique】 [0002] With the development of science and technology and the improvement of living standards, people are paying more and more attention to a healthy and safe lifestyle. Specifically, various products that come into contact with the human body in daily life require antibacterial properties. Mobile phones, especially products that people are in close contact with in daily life, some common bacteria can easily be introduced into the human body and cause diseases. [0003] In order to prevent the reproduction of bacteria, various antibacterial coatings have emerged as the times require. Antibacterial agents used in coatings mainly include natural antibacterial agents, inorganic antibacterial agents and organic antibacterial agents. From the comprehensive performance of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/14C09D133/04C09D175/04
Inventor 李玉冰黄露瑶
Owner BYD CO LTD
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