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A kind of composite antifouling coating containing modified white graphene and its application

A white graphene, modified technology, applied in the direction of fireproof coatings, antifouling/underwater coatings, polyester coatings, etc., can solve the problems of difficult removal, unsatisfactory effect, non-stickiness, etc., and achieve optimal pH and temperature Conditions, avoiding deterioration of processing performance, and enhancing the effect of interface performance

Active Publication Date: 2019-12-27
GUANGDONG NANOLUTION SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the anti-scaling property is poor, and it does not have the function of non-stickiness. When in contact with the heated material, substances will stick to the surface of the heating tube and form dirt; in addition, the naked profile is not resistant to acid and alkali, and is easy to oxidize
[0005] 2. Dissolve and disperse the antiscalant into the fluid transported by the pipeline, and play the role of antiscaling in the process of fluid flow, but this method is inefficient, and the addition of the antiscalant may pollute the original fluid, and it is difficult to remove
[0006] 3. Enamel materials are used on the inner wall of equipment, pipelines or the surface of heating pipes, but because the surface of the material is easy to be uneven, air bubbles are easy to occur during the curing process, and cracks are easy to occur under the action of long-term thermal expansion and contraction, and the effect is not ideal
[0007] 4. Apply protective coating, but the existing protective coating is easy to burst and fall off, and generally the primer needs to be sprayed first, and then the protective coating is sprayed after the primer is cured, and then cured. The process is complicated, causing the coating to be too thick and affecting the equipment heat transfer efficiency

Method used

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  • A kind of composite antifouling coating containing modified white graphene and its application
  • A kind of composite antifouling coating containing modified white graphene and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Preparation of modified white graphene

[0052] Get 0.5 parts of white graphene powder and add it to a round bottom flask, and add 100 parts of distilled water to the round bottom flask, then ultrasonically disperse it, add 0.1 part of sodium lauryl sulfate to the round bottom flask, and ultrasonically stir at a high speed to obtain a Oil-modified white graphene; after heating the oleophilic modified white graphene dispersion to 60°C, add 0.5 parts of ammonium persulfate initiator, stir for 10 minutes and start to add 0.05 parts of methyl methacrylate dropwise for 0.5 hours Finish. After the dropwise addition, keep warm for 0.5h until the reaction is complete. After the reaction is completed, adjust the pH value to 7 with ammonia water, quickly cool to room temperature, filter under reduced pressure, wash the filter cake with distilled water for 3 times and then wash with alcohol once, and after vacuum drying at 60°C, grind to obtain polymethyl methacrylate Coated mo...

Embodiment 2

[0058] Preparation of modified white graphene

[0059] Take 2 parts of white graphene powder and add it to a round bottom flask, and add 100 parts of ethanol to the round bottom flask, then ultrasonically disperse it, add 0.2 part of sodium lauryl sulfate to the round bottom flask, and stir at high speed ultrasonically to obtain the Oil-modified white graphene: After heating the oleophilic modified white graphene dispersion to 90°C, add 1 part of ammonium persulfate initiator, stir for 15 minutes, start to add 0.5 parts of methyl acrylate dropwise, and finish dropping in 0.6 hours. After the dropwise addition, keep warm for 1 h until the reaction is complete. After the reaction is completed, adjust the pH value to 7 with ammonia water, quickly cool to room temperature, filter under reduced pressure, wash the filter cake with distilled water for 3 to 4 times, then wash with alcohol once, and dry it in vacuum at 70°C, and grind to obtain the polymethylacrylate package. Coated ...

Embodiment 3

[0065] Preparation of modified white graphene

[0066] Take 5 parts of white graphene powder and add it to a round-bottomed flask, and add 100 parts of glycerol to the round-bottomed flask, and then ultrasonically disperse it. non-toxic white graphene; after heating the lipophilic modified white graphene dispersion to 90°C, add 2 parts of azobisisobutyronitrile initiator, stir for 20 minutes and start to add 1 part of glycidyl acrylate dropwise for 0.7h Drip finished. After the dropwise addition, keep warm for 1.5 h until the reaction is complete. After the reaction is completed, adjust the pH value to 7 with ammonia water, quickly cool to room temperature, filter under reduced pressure, wash the filter cake with distilled water for 3 to 4 times, wash with alcohol once, and vacuum dry at 90°C, grind to obtain polymethacrylic acid shrink Glyceride-coated modified white graphene.

[0067] Preparation of composite silicone resin coatings containing modified white graphene ...

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Abstract

The invention relates to the field of antifouling coatings, in particular to a composite antifouling coating containing modified white graphene and its application. The raw materials include: 25 to 60 parts by weight of matrix resin, 5.5 to 18 parts of pigments and fillers, 0.5 to 60 parts by weight. 3.0 parts of dispersant, 0.5-1.0 parts of defoamer, 31-40 parts of solvent, 0.5-8 parts of modified white graphene and 2-8 parts of curing agent; the modified white graphene is 2-10 layers of white graphite After surface lipophilic treatment, the white graphene coated with polymer is obtained by in-situ polymerization. The composite antifouling paint of the present invention is used as an antifouling coating on the surface of a device or pipeline in contact with fluid. The composite anti-scaling coating of the invention has high thermal conductivity, high temperature resistance, insulation, thin coating and smooth surface, has high adhesion, and can effectively resist dirt and corrosion.

Description

technical field [0001] The invention relates to the field of antifouling coatings, in particular to a composite antifouling coating containing modified white graphene and an application thereof. Background technique [0002] Large-scale chemical equipment, industrial water supply pipes, carbon steel water coolers, heating pipes, and heating pipes of household appliances used for storing, transporting, and heating fluids are prone to fouling after a period of use. , It will cause blockage and corrosion of the pipeline, and the heat transfer efficiency will be reduced. If the temperature of the conduction surface is too high, the mechanical properties of the wall surface will decrease, and cracks will appear on the wall surface, which may cause safety accidents. According to statistics, the chemical industry loses as much as 10 billion yuan a year due to fouling on the inner wall of equipment. [0003] At present, there are mainly four ways to deal with the anti-scaling and c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/08C09D133/00C09D183/04C09D163/00C09D5/16
CPCC08K2003/385C08K2201/003C09D5/1618C09D5/18C09D133/00C09D163/00C09D167/08C09D183/04C08L71/02C08K9/10C08K3/38C08L83/04
Inventor 段曦东赵涛楠李晓丰
Owner GUANGDONG NANOLUTION SCI & TECH CO LTD
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