Graphene oxide (GO)-coated PGMA (poly-glycidyl mathacrylate) microsphere composite anti-corrosive coating additive and preparation method thereof

A technology of polymethacrylic acid and glycidyl ester, applied in the direction of coating, etc., can solve problems such as graphene dispersion, achieve the effect of improving dispersion, improving compatibility, and improving agglomeration

Active Publication Date: 2018-08-24
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the deficiency of existing graphene dispersion in anti-corrosion coatings, and provides a graphene oxide-coated polyglycidyl methacrylate microspheres composite anti-corrosion coating to aid in anti-corrosion coatings by combining the characteristics of graphene oxide and polymer microspheres Agent and preparation method thereof, the anti-corrosion coating additive has both corrosion inhibition and physical barrier properties

Method used

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  • Graphene oxide (GO)-coated PGMA (poly-glycidyl mathacrylate) microsphere composite anti-corrosive coating additive and preparation method thereof
  • Graphene oxide (GO)-coated PGMA (poly-glycidyl mathacrylate) microsphere composite anti-corrosive coating additive and preparation method thereof
  • Graphene oxide (GO)-coated PGMA (poly-glycidyl mathacrylate) microsphere composite anti-corrosive coating additive and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] (1) In a 250mL three-necked flask, add 1g of polyvinylpyrrolidone (PVP), 120mL of reaction solvent anhydrous ethanol, and a magnetic stirrer in sequence. After PVP is completely dissolved, add 10g of reaction monomer glycidyl methacrylate Esters (GMA), inert gas N 2 After half an hour, the temperature of the reaction system was raised to 70°C;

[0028] (2) After the temperature in (1) is stabilized, use a 5mL syringe to inject 0.25g of initiator azobisisobutyronitrile (AIBN) previously dissolved in absolute ethanol into the reaction system at one time, and react for 24 hours;

[0029] (3) Centrifuge the reaction solution of (2) at 2600r / min for 5min in a centrifuge, pour off the supernatant after centrifugation, add absolute ethanol and ultrasonically oscillate to disperse for 5min, and wait until the product centrifuged to the bottom of the bottle is redispersed, and then Centrifuge at the same speed and time, repeat the aforementioned operations, wash the product rep...

Embodiment 2

[0038] (1) In a 150mL three-necked flask, add 2g of polyvinylpyrrolidone (PVP), 50mL of reaction solvent anhydrous ethanol, and a magnetic stirrer in sequence. After PVP is completely dissolved, add 10g of reaction monomer glycidyl methacrylate Esters (GMA), inert gas N 2 After half an hour, the temperature of the reaction system was raised to 65°C;

[0039] (2) After the temperature in (1) is stabilized, inject 0.3 g of initiator azobisisobutyronitrile (AIBN) previously dissolved in absolute ethanol into the reaction system at one time with a 5 mL syringe, and react for 24 hours;

[0040] (3) Centrifuge the reaction solution of (2) at 2500r / min for 5min in a centrifuge, pour off the supernatant after centrifugation, add absolute ethanol and ultrasonically oscillate to disperse for 5min, and wait until the product centrifuged to the bottom of the bottle is redispersed, and then Centrifuge at the same speed and time, repeat the aforementioned operations, wash the product repea...

Embodiment 3

[0046] (1) Add weighed 0.45g of polyvinylpyrrolidone (PVP), 30mL of reaction solvent absolute ethanol, and a magnetic stirrer into a 100mL three-necked flask in sequence. After PVP is completely dissolved, add 3g of reaction monomer methacrylic acid to shrink Glyceride (GMA), inert gas N 2 After half an hour, the temperature of the reaction system was raised to 75°C;

[0047] (2) After the temperature in (1) is stabilized, inject 0.126 g of initiator azobisisobutyronitrile (AIBN) previously dissolved in absolute ethanol into the reaction system at one time with a 5 mL syringe, and react for 12 hours;

[0048] (3) Centrifuge the reaction solution of (2) at 2800r / min for 5min in a centrifuge, pour off the supernatant after centrifugation, add absolute ethanol and ultrasonically oscillate to disperse for 5min, and wait until the product centrifuged to the bottom of the bottle is redispersed, and then Centrifuge at the same speed and time, repeat the aforementioned operations, wa...

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Abstract

The invention relates to a graphene oxide (GO)-coated PGMA (poly-glycidyl mathacrylate) microsphere composite anti-corrosive coating additive and a preparation method thereof. The GO-coated PGMA microsphere composite anti-corrosive coating additive is characterized in that PGMA microspheres with uniform particle size distribution and micrometer size are prepared by a single dispersing method; a surfactant CTAB (cetyltrimethyl ammonium bromide) is adsorbed to the surface of each microsphere, the ammonia ions in the CTAB are positively charged, and the long alkyl chain has lipophilicity, so thatthe surface of each microsphere is positively charged after the CTAB is adsorbed to the surface of each PGMA microsphere; the GO has huge specific surface area, and contains a large amount of electronegative oxygen-containing function groups, such as epoxy groups, hydroxyl groups and carboxyl groups, the positive ions can be effectively adsorbed by electrostatic adsorption, and the GO irregularlycoats the surface of the polymer microsphere, so as to obtain the GO-coated PGMA microsphere composite anti-corrosive coating additive.

Description

technical field [0001] The invention belongs to the field of anticorrosion coatings, and relates to a graphene oxide-coated polyglycidyl methacrylate microsphere composite anticorrosion coating additive and a preparation method thereof. Background technique [0002] Corrosion and protection of materials is a very important new subject, and corrosion is the main reason for the failure of metal materials. Metal corrosion has an important impact on the national economy and life, and at the same time it always threatens the safety of various engineering equipment, and has gradually become an economic issue that countries attach great importance to. Corrosion of metals consumes a large amount of resources, and while burying major safety hazards and causing major economic losses, it will also lead to a series of natural environment pollution. [0003] At present, the main methods of protecting metal surfaces include the development of new corrosion-resistant materials, electroche...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F271/02C08F220/32C08F8/30C08K3/04C09D7/65
CPCC08F8/30C08F271/02C08K3/042C09D7/65C08F220/325
Inventor 戴李宗李奕奕王世成王宏超任沭帆许一婷袁丛辉陈国荣曾碧榕罗伟昂
Owner XIAMEN UNIV
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