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A kind of inorganic anti-corrosion coating with photocatalytic antibacterial and antifouling and coating method thereof

An anti-corrosion coating and photocatalytic technology, applied in anti-corrosion coatings, anti-fouling/underwater coatings, coatings, etc., can solve problems such as marine biological distortion, affect human health, and accelerate corrosion progress, and achieve a firm and compact structure, excellent Bactericidal and antibacterial function, good stability

Active Publication Date: 2020-11-10
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organotin is highly toxic, causing pollution to the marine environment, causing distortion of marine life, and affecting human health
At the same time, most organic materials will age when they are subjected to the combined effects of heat, oxygen, water, light, microorganisms, chemical media and other environmental factors, making them lose their anti-corrosion capabilities.
Secondly, once most organic coatings are damaged, sub-film corrosion is very easy to occur, which accelerates the progress of corrosion.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A photocatalytic antibacterial and antifouling inorganic anti-corrosion coating, raw materials include the following components by weight: phosphorus pentoxide 125g; silicon dioxide 100g, quartz 135g; calcium fluoride 50g; potassium carbonate 25g, boron oxide 40g , sodium carbonate 15g; nano-zinc oxide (particle size 40-60nm) 2.5g, nano-titanium dioxide (particle size 1-20nm) 5g, graphene (particle size 20-30nm) 0.5g, nano-silver powder (particle size 70-100nm) 2g; wherein said phosphorus pentoxide, silicon dioxide, and quartz pass through a 400-mesh sieve.

[0028] A method for coating a photocatalytic antibacterial and antifouling inorganic anticorrosion coating, comprising the following steps:

[0029] 1) Preparation of paint: 125g of phosphorus pentoxide; 100g of silicon dioxide, 135g of quartz; 50g of calcium fluoride; 25g of potassium carbonate, 40g of boron oxide, and 15g of sodium carbonate, mixed and stirred evenly to obtain mixture A;

[0030] Put mixture A i...

Embodiment 2

[0037] A photocatalytic antibacterial and antifouling inorganic anti-corrosion coating, raw materials include the following components by weight: phosphorus pentoxide 150g; silicon dioxide 115g, silica 100g; calcium fluoride 90g; boron oxide 20g, sodium carbonate 10g , chromium oxide 5g, molybdenum oxide 5g; nano-tin oxide (20-30nm particle size) 2g, nano-indium oxide (1-20nm) 1g, nano-zinc sulfide (70-100nm) 2g; wherein said phosphorus pentoxide, di Silicon oxide and silica pass through a 400-mesh sieve.

[0038] A method for coating a photocatalytic antibacterial and antifouling inorganic anticorrosion coating, comprising the following steps:

[0039] 1) Preparation of paint: Weigh 150g of phosphorus pentoxide; 115g of silicon dioxide, 100g of silica; 90g of calcium fluoride; 20g of boron oxide, 10g of sodium carbonate, 5g of chromium oxide, and 5g of molybdenum oxide, mix and stir evenly to obtain mixture A;

[0040]Put mixture A in a corundum crucible and heat it to 800°C...

Embodiment 3

[0047] A photocatalytic antibacterial and antifouling inorganic anti-corrosion coating, raw materials include the following components by weight: phosphorus pentoxide 170g; nano silicon dioxide 125g, silica 25g, quartz 25g; calcium fluoride 115g; potassium carbonate 10g , sodium carbonate 10g, vanadium oxide 5g; nano-zinc oxide (particle size 20-30nm) 11g, nano-tin oxide (particle size 1-20nm) 2.5g, nano-tungsten oxide (particle size 20-30nm) 0.5g, nano-silver powder ( Particle diameter 70-100nm) 1g; wherein said phosphorus pentoxide, nano-silicon dioxide, silica, quartz through 400 mesh sieve.

[0048] A method for coating a photocatalytic antibacterial and antifouling inorganic anticorrosion coating, comprising the following steps:

[0049] 1) Preparation of coating: 170g of phosphorus pentoxide; 125g of nano silicon dioxide, 25g of silica, 25g of quartz; 115g of calcium fluoride; 10g of potassium carbonate, 10g of sodium carbonate, and 5g of vanadium oxide were mixed and st...

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Abstract

The invention discloses a photocatalytic antibacterial antifouling inorganic anticorrosive coating. The coating is prepared from the following raw materials in parts by weight: 25 to 35 parts of phosphorus pentoxide, 35 to 50 parts of silicon oxide, 10 to 25 parts of calcium fluoride, 1 to 4 parts of bacteriostatic agent and 5 to 20 parts of flatting agent. The invention further discloses a coating method of the photocatalytic antibacterial antifouling inorganic anticorrosive coating. The coating method comprises the following steps of (1) coating preparation, (2) base material treatment, (3)coating, (4) sintering and (5) cooling, and the photocatalytic antibacterial antifouling inorganic anticorrosive coating is obtained. By adding the bacteriostatic agent, the antibacterial antifoulingcapacity of the coating is greatly improved, the process is simple, the seawater corrosion resistance is good, and the construction modes are diversified.

Description

technical field [0001] The invention belongs to the field of marine anti-fouling and anti-corrosion coatings, in particular to a photocatalytic antibacterial and anti-fouling inorganic anti-corrosion coating and a coating method thereof. Background technique [0002] The ocean area accounts for about 71% of the earth's surface area and contains abundant resources. In addition to metal corrosion, marine biofouling is another major problem facing the development of marine economy, which causes huge economic losses every year. Microorganisms such as bacteria, various types of algae, and protozoa adhere to the surface of the substrate and gradually multiply, all of which will cause marine pollution. Fouling organisms can destroy anti-corrosion coatings and accelerate the corrosion of metals. At the same time, for ships, biofouling increases navigational resistance and increases power consumption; for pipelines in seawater, biofouling can cause pipeline blockage and reduce heat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D5/14C09D5/16C09D5/08C09D7/61B05D7/14B05D3/02B05D5/00
CPCB05D3/0272B05D5/00B05D7/14B05D2202/10C09D1/00C09D5/08C09D5/14C09D5/1687
Inventor 刘毅钱昊闫东明邓嘉华
Owner ZHEJIANG UNIV
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