A kind of hybrid acrylic electrophoretic paint and preparation method thereof

A technology of electrophoretic coating and acrylic acid, applied in the direction of electrophoretic coating, coating, etc., can solve the problems of reducing coating performance, achieve the effect of avoiding pH increase, improving redox activity, and solving difficult dissolution

Active Publication Date: 2021-04-02
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, regardless of polyaniline or aniline oligomers, their electrochemical activity depends on their own protonic acid doping mechanism, and the reduction of redox activity in a high pH (pH>4) environment also limits its application.
Usually, the pH tolerance problem of polyaniline is solved by the method of polymer acid doping, but the introduction of polymer acid into the coating will also reduce the coating performance

Method used

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  • A kind of hybrid acrylic electrophoretic paint and preparation method thereof
  • A kind of hybrid acrylic electrophoretic paint and preparation method thereof
  • A kind of hybrid acrylic electrophoretic paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of aniline oligomer / carbon nanotube composites

[0033]Put 1.84g (0.01mol) N-phenyl-p-phenylenediamine (ADPA) into the reaction flask, add 100mL acetone, 100mL water, 25mL concentrated hydrochloric acid, 0.18g (10wt%) multi-walled carbon nanotubes (MWCNT) , mix evenly with a high-speed homogenizer, place in an ice bath and stir until the temperature drops to 0°C, drop 2.28g of ammonium persulfate dissolved in 25mL of water into the reaction bottle within 30min, stir and react for 4h, and pump under reduced pressure Filter, wash with 0.6mol / L hydrochloric acid and suck dry, wash once with 300mL acetone. Back-dope with 500mL 0.5mol / L ammonia water, then wash with a large amount of water until neutral. The product was dried under reduced pressure in an oven at 40°C to obtain a purple-black solid powder.

[0034] Its redox activity was studied by electrochemical workstation.

[0035] (2) Synthesis of acrylate copolymer

[0036] Add 50g of propylene glyco...

Embodiment 2

[0040] (1) Preparation of aniline oligomer / carbon nanotube composites

[0041] With embodiment 1.

[0042] (2) Synthesis of acrylate copolymer

[0043] With embodiment 1.

[0044] (3) Preparation of hybrid acrylic electrophoretic coating

[0045] Get step (1) gained aniline oligomer / carbon nanotube composite material 1.5g (3wt%) to add in the step (2) gained acrylate copolymer, high-speed homogenizer mixes evenly, and under agitation state with a certain speed to 200 g of deionized water was added dropwise to prepare a hybrid acrylic electrophoretic coating.

Embodiment 3

[0047] (1) Preparation of aniline oligomer / carbon nanotube composites

[0048] With embodiment 1.

[0049] (2) Synthesis of acrylate copolymer

[0050] With embodiment 1.

[0051] (3) Preparation of hybrid acrylic electrophoretic coating

[0052] Get step (1) gained aniline oligomer / carbon nanotube composite material 2.5g (5wt%) to add in step (2) gained acrylate copolymer, high-speed homogenizer mixes evenly, and under agitation state with a certain speed to 200 g of deionized water was added dropwise to prepare a hybrid acrylic electrophoretic coating.

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PUM

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Abstract

The invention discloses a preparation method of an electrophoretic coating with a redox activity, and concretely relates to a hybrid acrylic cathodic electrophoretic coating. The electrophoretic coating comprises an aniline oligomer / carbon nanotube composite material and an acrylate copolymer, and the composite material is obtained by combining an aniline oligomer with carbon nanotubes by pi-pi interaction, and provides the redox ability for the electrophoretic coating. The acrylic cathodic electrophoretic coating of the invention has a good application prospect in the fields of anticorrosionof metal substrates and the like.

Description

technical field [0001] The invention relates to the preparation of redox active electrophoretic coating, specifically a hybrid acrylic cathodic electrophoretic coating. [0002] technical background [0003] Metal corrosion will bring huge economic losses to national production and life, and damage events caused by metal corrosion also spread all over the world. Therefore, it is of great significance to improve the anti-corrosion performance of metals and reduce the economic losses caused by the corrosion of metal materials. For metal corrosion, one of the simplest and most effective means is to coat a layer of anti-corrosion coating on the metal surface to form a barrier between the metal surface and the corrosive environment to prevent the entry of external corrosive media, thereby protecting the metal. Protective effects. [0004] After searching the existing scientific and technological literature, it is found that the research and application of polyaniline and its der...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D125/14C09D5/44C09D7/65C09D7/61
CPCC09D5/4411C09D5/4473C09D5/448
Inventor 魏玮赵明昕李小杰季磊潘凯杨梓铭刘晓亚
Owner JIANGNAN UNIV
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