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Metal corrosion-resistant composite material coating and preparation method thereof

A composite material, metal anti-corrosion technology, applied in anti-corrosion coatings, coatings, etc., can solve the problem of difficult to adhere to metal substrates, and achieve the effect of preventing metal corrosion, good toughness and strong viscosity

Inactive Publication Date: 2017-09-29
李文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polymeric coatings have shown potential for corrosion inhibition, but have been difficult to adhere to metal substrates

Method used

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  • Metal corrosion-resistant composite material coating and preparation method thereof
  • Metal corrosion-resistant composite material coating and preparation method thereof
  • Metal corrosion-resistant composite material coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Embodiment 1 adopts following preparation method:

[0050] S100, mixing and stirring 15 parts of graphite powder in 22 parts of N-methylpyrrolidone;

[0051] S200, performing ultrasonic exfoliation on the mixture in S100 to obtain non-functionalized nano-graphene;

[0052] S300, adding 16 parts of acetic anhydride and 16 parts of m-phenylenediamine to the non-functionalized graphene obtained in S200, after ultrasonic treatment at 80°C to 100°C for 5 minutes, mixing and stirring for 0.5h to 2.0h to carry out in-situ polymerization, After in-situ polymerization of acid anhydride and diamine to generate polyamic acid, a nano-graphene / polyamic acid mixture is obtained;

[0053] S400, the nanographene / polyamic acid mixture that S300 is obtained is evenly coated on the alloy steel surface of cleaning;

[0054] S500. After curing the alloy steel coated with nano-graphene / polyamic acid mixture at 150°C for 5 minutes to 10 minutes, and then curing at 250°C to 280°C for 5 minut...

Embodiment 2

[0055] Embodiment 2 adopts following preparation method:

[0056] S100, mixing and stirring 22 parts of graphite powder in 20 parts of N-methylpyrrolidone;

[0057] S200, performing ultrasonic exfoliation on the mixture in S100 to obtain non-functionalized nano-graphene;

[0058] S300. Add 18 parts of phthalic anhydride and 20 parts of triethylenediamine to the non-functionalized graphene obtained in S200, and add 15 parts of multi-walled carbon nanotubes. After ultrasonic treatment at 80°C to 100°C for 5 minutes , mixing and stirring for 0.5h to 2.0h to carry out in-situ polymerization, wherein the acid anhydride and diamine are in-situ polymerized to form polyamic acid, and then the nano-graphene / polyamic acid mixture is obtained;

[0059] S400, the nanographene / polyamic acid mixture that S300 is obtained is evenly coated on the alloy steel surface of cleaning;

[0060] S500. After curing the alloy steel coated with nano-graphene / polyamic acid mixture at 150°C for 5 minute...

Embodiment 3

[0061] Embodiment 3 adopts following preparation method:

[0062] S100, mixing and stirring 25 parts of graphite powder in 32 parts of N-methylpyrrolidone;

[0063] S200, performing ultrasonic exfoliation on the mixture in S100 to obtain non-functionalized nano-graphene;

[0064] S300, adding 18 parts of diphenyl ether dianhydride and 18 parts of m-phenylenediamine to the non-functionalized graphene obtained in S200, and adding 15 parts of multi-walled carbon nanotubes, and ultrasonically treating at 80°C to 100°C for 5 minutes Afterwards, mix and stir for 0.5h to 2.0h for in-situ polymerization, in which acid anhydride and diamine are in-situ polymerized to form polyamic acid, then add 3 to 5 parts of m-phenylenediamine for stirring to obtain nano-graphene / polyamide Acid PAA mixture;

[0065] S400, the nanographene / polyamic acid mixture that S300 is obtained is evenly coated on the alloy steel surface of cleaning;

[0066] S500. After curing the alloy steel coated with nan...

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Abstract

The invention provides a metal corrosion-resistant composite material coating and a preparation method thereof. The preparation raw materials of the metal corrosion-resistant composite material coating comprise graphite powder, anhydride, diamine and N-methyl pyrrolidone. The prepared metal corrosion-resistant composite material coating obtained by combining graphene made from the graphite powder with polyetherimide generated by anhydride and diamine is high in viscidity and can be firmly combined with the surface of a metal. The coating is good in toughness, hard to break and high in corrosion resistance, has the remarkable characteristic of effectively preventing metal corrosion, is low in toxicity and has high practicality and application prospect.

Description

technical field [0001] The invention relates to the field of metal anti-corrosion coatings, in particular to a metal anti-corrosion composite material coating and a preparation method thereof. Background technique [0002] Metal corrosion is an unavoidable serious problem in industry and life. Every year, the society needs to invest a lot of time, money and resources in rust prevention, maintenance and replacement of metal equipment. The current anti-corrosion research on metals is dedicated to reducing or slowing down the corrosion effect of the external environment on it. The most common method is to coat the metal surface to prolong its service life exposed to the service environment. [0003] With the rise of advanced manufacturing, sustainable processes and materials will become increasingly important. At present, zinc-based alloys are the most common anti-corrosion method of metal coatings in alloy steels to protect the main metal matrix by sacrificing active metals. ...

Claims

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Application Information

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IPC IPC(8): C09D179/08C09D5/08C09D7/12
CPCC08K3/04C08K7/24C08K2201/003C08K2201/004C08K2201/011C09D5/08C09D179/08
Inventor 李文
Owner 李文
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