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A kind of preparation method of antifouling and antibacterial composite coating

A composite coating and antifouling technology, applied in antifouling/underwater coatings, coatings, paints containing biocide, etc., can solve the problem that the total number of colonies on the surface of interior parts exceeds the standard reference value, the effect is limited, and the total number of bacteria exceeds the standard, etc. problems, to achieve remarkable results, simple application, and wide-ranging sources

Active Publication Date: 2019-08-06
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in order to solve the problem that the total number of bacteria in the car is seriously exceeded, the method of wiping with medical alcohol is often used to solve the problem. Still exceeds the standard reference value
In addition, there are hydrophobic products on the market for automotive interior fabrics. After using such products, the juices spilled on the surface are easy to clean, but they still cannot fundamentally solve the problem of bacterial reproduction; a commercially available photocatalytic self-cleaning The product can sterilize and decompose organic matter after coating the automotive interior, but this type of product needs to be excited by ultraviolet light, and the effect is limited

Method used

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  • A kind of preparation method of antifouling and antibacterial composite coating
  • A kind of preparation method of antifouling and antibacterial composite coating
  • A kind of preparation method of antifouling and antibacterial composite coating

Examples

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Embodiment 1

[0034] Embodiment 1: This embodiment provides a method for preparing an antifouling and antibacterial composite coating, comprising the following steps:

[0035](1) Disperse ethyl orthosilicate in the ethanol-distilled water mixture to obtain solution A, wherein the mass percent of orthosilicate is 1.88%, the mass percent of distilled water is 2.53%, and the balance is ethanol; Ammonia water (concentration is 28%-30%, the same below) is added to ethanol to obtain NH 3 Alcoholic ammonia solution B with a mass percentage of 6.60%; add alcoholic ammonia solution B to solution A at a rate of 20 μl / min, while stirring at 1000 rpm, and continue stirring after all alcoholic ammonia solution B is added to solution A 30 minutes, and then leave it open for 24 hours to obtain solution C, centrifuge solution C, and then dry the resulting solid product at 100°C for 3 hours to obtain SiO with a particle size of about 75nm 2 Microspheres.

[0036] (2) SnCl 2 2H 2 O is added to aqueous hy...

Embodiment 2

[0040] Embodiment 2: This embodiment provides a method for preparing an antifouling and antibacterial composite coating, comprising the following steps:

[0041] (1) Disperse ethyl orthosilicate in the ethanol-distilled water mixture to obtain solution A, wherein the mass percent of orthosilicate is 1.90%, the mass percent of distilled water is 1.63%, and the balance is ethanol; Add ammonia to ethanol to get NH 3 Alcoholic ammonia solution B with a mass percentage of 5.55%; add alcoholic ammonia solution B to solution A at a rate of 25 μl / min, while stirring at 800 rpm, and continue stirring after all alcoholic ammonia solution B is added to solution A 60 minutes, and then leave it open for 48 hours to obtain solution C, centrifuge solution C, and then dry the resulting solid product at 120°C for 1.5 hours to obtain SiO with a particle size of about 63nm 2 Microspheres.

[0042] (2) SnCl 2 2H 2 O is added to aqueous hydrochloric acid to form SnCl 2 The mass percent conten...

Embodiment 3

[0046] Embodiment 3: This embodiment provides a method for preparing an antifouling and antibacterial composite coating, comprising the following steps:

[0047] (1) Disperse ethyl orthosilicate in the ethanol-distilled water mixture to obtain solution A, wherein the mass percent of orthosilicate is 1.91%, the mass percent of distilled water is 1.03%, and the balance is ethanol; Add ammonia to ethanol to get NH 3 Alcoholic ammonia solution B with a mass percentage of 4.39%; add alcoholic ammonia solution B to solution A at a rate of 30 μl / min, while stirring at 500 rpm, and continue stirring after all alcoholic ammonia solution B is added to solution A 90 minutes, and then left open for 48 hours to obtain solution C, which was centrifuged, and then the resulting solid product was dried at 100°C for 3 hours to obtain SiO with a particle size of about 24nm 2 Microspheres.

[0048] (2) SnCl 2 2H 2 O is added to aqueous hydrochloric acid to form SnCl 2 The mass percent conten...

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Abstract

The invention relates to a preparation method of antifouling anti-bacterial composite coating. The preparation method includes steps of (1), dispersing ethyl orthosilicate in alcohol / water solution to form solution (A); adding ammonium hydroxide into alcohol to form alcohol amine solution (B); adding form alcohol amine solution (B) in the solution (A) and stirring; then performing standing of the mixture to obtain solution (C) and nanometer spherical SiO2 particle in the solution (C); (2), dispersing the prepared nanometer SiO2 microsphere in an acid water solution containing SnCl2.2H2O and performing sensitization treatment to obtain a SiO2 microsphere (D) absorbed with Sn2+, and dispersing the SiO2 microsphere (D) absorbed with Sn2+ in the water and adding AgNO3 solution and reducing agent to obtain the Ag-loaded nanometer SiO2 microsphere; (3), dispersing the prepared Ag-loaded nanometer SiO2 microsphere in the alcohol-water solution; then adding silane hydrolysate containing perfluoroalkyl group in the solution to obtain the antifouling anti-bacterial composite coating.

Description

technical field [0001] The invention belongs to the technical field of antifouling and antibacterial coating preparation, in particular to a coating used for antifouling and antibacterial treatment on the surface of automobile interior fabrics. Background technique [0002] The interior of the car is a relatively sealed environment, and it is easy to breed a large number of bacteria, especially the juice, food residue and sweat stains left in the car, which create conditions for the reproduction of bacteria. Bacterial pollution is the most serious in areas frequently touched by hands and air outlets of air conditioners, such as steering wheels, shift handles, seats, handles, air outlets, etc. According to the survey, the total number of bacteria in the three places of the steering wheel, gear shift handle and air outlet of the air conditioner of the 1-year-old and 3-year-old private cars is 95,000 cfu / cm respectively 2 , 210900 cfu / cm 2 , 83000 cfu / cm 2 and 122000 cfu / cm ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/16C09D1/00
CPCC09D1/00C09D5/1618
Inventor 陈大华秦玉林唐少俊潘立升洪丽熊建民茆俊峰熊辉
Owner CHERY AUTOMOBILE CO LTD
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