Fingerprint-resistant water-based coating and preparation process thereof

A water-based paint and preparation technology, applied in the direction of anti-fouling/underwater paint, anti-corrosion paint, coating, etc., can solve the problems of high volatility, easy to pollute the environment, etc., and achieve outstanding fingerprint resistance, Effect of improving compatibility and service life, improving compatibility and service life

Active Publication Date: 2020-05-08
陈婧晗
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to propose a fingerprint-resistant water-based paint and its preparation process, aiming to solve the technical problems of the existing fingerprint-resistant paint system that is too volatile, easily pollutes the environment and has poor coating performance

Method used

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  • Fingerprint-resistant water-based coating and preparation process thereof

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preparation example Construction

[0039] The present invention also proposes a preparation process of a fingerprint-resistant water-based paint, which includes the following steps: adding modified water-based acrylic emulsion, modified fluorocarbon emulsion and defoamer to the container in order by weight, and stirring and dispersing for 20-25min to obtain Mixing system A; adding a pH regulator dropwise while stirring in the mixing system A, and adjusting the pH value to 8-9 to obtain a mixing system B; adding a passivating agent dropwise while stirring in the mixing system B, adjusting the pH value to Mixed system C is obtained at 6.8-7.2; solvent and wetting agent are added to mixed system C while stirring, thickener is added dropwise after stirring for 15-20 minutes, and the fingerprint-resistant water-based coating is obtained by continuing to stir and disperse.

[0040] The preparation process of anti-fingerprint water-based paint is divided into three steps. First, the modified water-based acrylic emulsio...

Embodiment 1

[0049] (1) The preparation of surface-modified graphene oxide dispersion liquid comprises the following steps:

[0050] Add 100ml of distilled water and 0.1g of graphene oxide to the Erlenmeyer flask, stir and disperse, place in an ultrasonic instrument, and react in a water bath at 60°C for 1 hour to obtain a 1mg / ml graphene oxide dispersion;

[0051] Add 100mL of 1mg / ml graphene oxide dispersion and 10mL of PEG400 to another Erlenmeyer flask, place in an ultrasonic instrument, and react for 1h in a water bath at 60°C to obtain a surface-modified graphene oxide dispersion .

[0052] (2) the preparation of modified water-based acrylic acid emulsion, comprises the following steps:

[0053] In parts by weight, at 25°C, add 2.5 parts of deionized water, 6 parts of emulsifier (3 parts of cetyl alcohol, 3 parts of sodium lauryl sulfate) and 10 parts of surface-modified graphene oxide into the beaker. Liquid, stirred at a stirring rate of 1200rpm / min for 30min to obtain dispersion...

Embodiment 2

[0070] (1) The preparation of surface-modified graphene oxide dispersion liquid comprises the following steps:

[0071] Add 100ml of distilled water and 0.1g of graphene oxide to the Erlenmeyer flask, stir and disperse, place in an ultrasonic instrument, and react in a water bath at 55°C for 1.5h to obtain a 1mg / ml graphene oxide dispersion;

[0072] Add 100mL of 1mg / ml graphene oxide dispersion and 8mL of PEG600 to another Erlenmeyer flask, place in an ultrasonic instrument, and react for 2h in a water bath at 55°C to obtain a surface-modified graphene oxide dispersion .

[0073] (2) the preparation of modified water-based acrylic acid emulsion, comprises the following steps:

[0074] In parts by weight, at 20°C, add 5 parts of deionized water, 9 parts of emulsifier (6 parts of cetyl alcohol, 3 parts of sodium lauryl sulfate) and 15 parts of surface-modified graphene oxide into the beaker to disperse Liquid, stirred at a stirring rate of 1300rpm / min for 40min to obtain disp...

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Abstract

The invention relates to a fingerprint-resistant water-based coating and a preparation process thereof. The fingerprint-resistant water-based coating comprises the following raw materials in parts byweight: 40-60 parts of a modified water-based acrylic emulsion, 10-25 parts of a modified fluorocarbon emulsion, 2-7 parts of a passivator, 7-15 parts of an additive and 5-35 parts of a solvent, wherein the modified water-based acrylic emulsion comprises the following raw materials in parts by weight: 5-15 parts of a surface modified graphene oxide dispersion liquid, 25-50 parts of a monomer, 2-7parts of an initiator, 5-15 parts of an emulsifier, 5-25 parts of deionized water, 5-15 parts of a cosolvent and 3-12 parts of an auxiliary agent. According to the invention, a graphene oxide modifiedwater-based acrylic emulsion and a silica sol modified fluorocarbon emulsion are used as main film-forming substances; safe and nontoxic phytic acid is used as a passivation system; a filling material and an auxiliary agent applicable to a fingerprint-resistant water-based coating system are screened and optimized; thus, the prepared fingerprint-resistant coating has outstanding performance and excellent comprehensive performance; and the preparation process is simple.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a fingerprint-resistant water-based coating and a preparation process thereof. Background technique [0002] With the improvement of people's living standards, the use of electronic products and equipment is becoming more and more extensive. People began to be dissatisfied with the appearance, color and comfortable feel of the product, and also required the surface of the product to have excellent properties such as anti-fingerprint, wear resistance and scratch resistance to keep the product beautiful and durable. [0003] However, during the processing and manufacturing of existing electronic products and equipment, the sweat in the hands of workers will inevitably contaminate and form fingerprints on the surface of the product, which not only affects the appearance of the product, but also reduces the corrosion resistance of the product due to sweat. In order to solve the abo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D127/12C09D5/08C09D5/16C08F220/14C08F220/18C08F220/20C08F212/08
CPCC09D133/066C09D5/08C09D5/1687C08F220/14C08F220/18C08K2201/011C08L27/12C08L23/06C08K13/06C08K9/08C08K3/042C08K3/36C08K5/521
Inventor 陈婧晗
Owner 陈婧晗
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