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Stainless steel composite functional coating and preparation method thereof

A composite function, stainless steel technology, applied in the direction of anti-fouling/underwater coatings, coatings, paints containing biocides, etc., can solve the problems of functionality and application fields to be developed, and achieve broad market application prospects, coating attachment Focus on excellent, easy to prepare effects

Pending Publication Date: 2022-06-24
上海沪正实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN105462460 discloses a kind of antifouling and antifingerprint stainless steel water-based paint, which has high hydrophobic and oleophobic effect, but there are still deficiencies in the multifunctional direction such as glossiness and hardness; Chinese patent CN103540175 discloses a kind of silica sol waterproof Coatings have good waterproof and heat insulation effects, but their functionality and application fields need to be developed; Chinese patent CN106833319 discloses a water-based polycarbonate modified silica sol composite coating, which has high hardness, scrubbing resistance, and stain resistance. Other properties such as adhesion, gloss, etc. need to be improved

Method used

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  • Stainless steel composite functional coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Firstly, the silicon-zirconium nano-sol was prepared.

[0023] Step 1: Put 19g of ethyl orthosilicate into 60ml of ethanol, put 10g of zirconium acetate into 30ml of water, and stir at a constant speed for 1 hour;

[0024] Step 2: Mix the above two solutions evenly, and ultrasonicate for 10 minutes;

[0025] Step 3: Add 5g of polyvinyl alcohol to the mixed solution, and then drop acetic acid to control the pH value to 5, ultrasonically react at 50°C for 1 hour, and leave to age for 24 hours;

[0026] The fourth step: suction filtration, repeated washing with ethanol three times, and freeze-drying for 48 hours to obtain a silicon-zirconium nano-sol with an average particle size of 20 nm.

[0027] Then weigh the following components: 15g silicon-zirconium nano-sol, 35g modified epoxy acrylic resin Paraloid A11, 6g nano-titanium dioxide with a particle size of 10nm, 2g mica powder, 2g zinc polyphosphate, 45g deionized water, 0.5g poly Ammonium acrylate, 0.2g hydroxyethyl...

Embodiment 2

[0033] Firstly, the silicon-zirconium nano-sol was prepared.

[0034] Step 1: Put 10g of ethyl orthosilicate into 50ml of ethanol, put 5.2g of zirconium acetate into 20ml of water, and stir at a constant speed for 0.5h;

[0035] Step 2: Mix the above two solutions evenly, and ultrasonicate for 10 minutes;

[0036] Step 3: Add 3g of polyvinyl alcohol to the mixed solution, and then drop acetic acid to control the pH value to 4, ultrasonically react at 50°C for 1 hour, and leave to age for 24 hours;

[0037] Step 4: suction filtration, repeated washing with ethanol three times, and freeze-drying for 48 hours to obtain a silicon-zirconium nano-sol with an average particle size of 16 nm.

[0038] Then weigh the following components: 10g silicon-zirconium nano-sol, 30g modified epoxy acrylic resin Paraloid A11, 8g aluminum tripolyphosphate, 5g zinc polyphosphate, 40g deionized water, 0.3g ammonium polyacrylate, 0.3g hydroxyethyl Base cellulose, 0.1g silver-copper composite nanopa...

Embodiment 3

[0044] Firstly, the silicon-zirconium nano-sol was prepared.

[0045] Step 1: Put 20g of ethyl orthosilicate into 80ml of ethanol, put 10.5g of zirconium acetate into 40ml of water, and stir at a constant speed for 1 hour;

[0046] Step 2: Mix the above two solutions evenly, and ultrasonicate for 30 minutes;

[0047] Step 3: Add 5g of polyvinyl alcohol to the mixed solution, and then drop acetic acid to control the pH value to 4, ultrasonically react at 55°C for 1.5h, and leave to age for 36h;

[0048] The fourth step: suction filtration, repeated washing with ethanol three times, and freeze-drying for 48 hours to obtain a silicon-zirconium nano-sol with an average particle size of 19 nm.

[0049] Then weigh the following components: 20g silicon-zirconium nano-sol, 40g modified epoxy acrylic resin Paraloid A11, 4g particle size of 15nm nano titanium dioxide, 1g mica powder, 5g zinc polyphosphate, 50g deionized water, 1g polyacrylic acid Ammonium, 0.2g hydroxypropyl cellulose...

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Abstract

The invention discloses a stainless steel composite functional coating which is composed of the following components in percentage by mass: 30-50% of water-based modified epoxy acrylic resin; 5-20% of silicon-zirconium nano sol with the particle size of 15-30 nm; 10-20% of a filler; 30 to 60% of deionized water; 0.2%-1.5% of a dispersing agent; 0.2-1% of a thickening agent; 0.1 to 0.3 percent of bactericide; 1-3% of a pH neutralizer; 0.2-1% of an adhesion promoter; and 3-5% of a cosolvent. The water-based paint with multiple functions can be obtained through a silicon-zirconium nano sol and resin water-based composite system, and the water-based paint has the functions of hardening, wear resistance, antibiosis, hydrophobicity, transparency, highlight and the like. Wherein the nano sol not only has high transparency, but also endows the coating with better properties in the aspects of hardness, wear resistance, hydrophobicity and the like. The invention further discloses a preparation method of the stainless steel composite functional coating.

Description

technical field [0001] The invention belongs to the technical field of functional coatings, in particular to a composite functional coating for stainless steel, which can be effectively applied to the protection and functional fields of stainless steel materials. In addition, the invention also relates to a preparation method of the stainless steel composite functional paint. Background technique [0002] With the rapid development of modern industry, the application scenarios and environments of various materials have become diverse, and various work indicators have become more stringent. Among them, the performance parameters of the material surface often cannot meet the needs of the actual scene, and need to be treated through surface functionalization, and functional coatings are an important direction that has emerged as the times require. By coating the surface with multi-functional coatings, the surface performance of the material can be greatly improved to meet the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D5/14C09D7/61C09D7/63
CPCC09D133/00C09D5/14C09D7/61C09D7/63C09D7/67C08K2201/011C08K2003/2241C08K2003/327C08K2003/328C08K2201/014C08L2201/10C08L2205/03C08L1/284C08K13/02C08K3/22C08K3/34C08K3/32C08K3/015C08K5/521C08L1/286
Inventor 李佳怡薛嘉晓
Owner 上海沪正实业有限公司
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