Anticorrosive coating and preparation method thereof

A kind of anti-corrosion coating, coating technology, applied in the direction of anti-corrosion coating, epoxy resin coating, coating, etc., can solve zinc fever, damage workers' health, pollute the environment and other problems, achieve strong solubility, improve anti-corrosion effect, The effect of simple preparation process

Inactive Publication Date: 2020-02-07
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, several anti-corrosion coatings are widely used, mainly epoxy, polyurethane and zinc-rich primer coatings. Among them, zinc-rich primer coatings have shielding effect, electrochemical protection, coating film self-repair and passivation. However, the anti-corrosion performance is at the cost of sacrificing zinc powder. The zinc content of the coating used in production is more than 70%. The zinc content is high, and a large amount of zinc oxide mist will be generated during welding, which will damage the health of workers. Causes "zinc fever" and pollutes the environment

Method used

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  • Anticorrosive coating and preparation method thereof
  • Anticorrosive coating and preparation method thereof
  • Anticorrosive coating and preparation method thereof

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preparation example Construction

[0030] The invention provides a kind of preparation method of anticorrosion coating, comprises the following steps:

[0031] S1. Weigh the graphene and the dispersion solvent, and add them to the reagent bottle for mixing; wherein, the dispersion solvent is a mixture of xylene or xylene and n-butanol;

[0032] S2. Put the reagent bottle containing graphene and dispersing solvent into the ultrasonic cell pulverizer, and roughly disperse it to obtain a mixed solution of roughly dispersed graphene and dispersing solvent; wherein, during the rough dispersion process, put the ultrasonic cell pulverizer The mode is set to φ6, the power of the ultrasonic cell pulverizer is controlled to 60%-95%, and the time is 30-60min. It is used to rest for 2s every 3s, rest 4s every 1s or work without intermission. The diameter of the bottom of the ultrasonic gang is 6mm ;

[0033] S3. Ultrasonic the mixture of roughly dispersed graphene and dispersing solvent for 30-90 minutes until there is no...

Embodiment 1

[0039] A kind of preparation method of anticorrosion coating is provided among the embodiment 1, comprises the following steps:

[0040] Step 1. Use an electronic balance to weigh 300 mg of graphene, and put the weighed graphene into a reagent bottle with a magnet;

[0041] Step 2, add 10mL xylene in the reagent bottle that graphene is housed;

[0042] Step 3. Put the reagent bottle containing graphene and xylene in step 2 into the ultrasonic cell pulverizer, set the mode to φ6, control the power of the ultrasonic cell pulverizer to 95%, and the time is 60 minutes, wherein each working time is 3 seconds Rest for 2 seconds to get a mixture of roughly dispersed graphene and dispersion solvent;

[0043] Step 4, put the mixed solution of roughly dispersed graphene and dispersing solvent in step 3 into an ultrasonic cleaner for ultrasonication, the ultrasonic time is 90min without particles, and obtain a finely dispersed graphene dispersion;

[0044] Step 5, weigh 3000mg dodecyla...

Embodiment 2

[0049] A kind of preparation method of anticorrosion coating is provided among the embodiment 2, comprises the following steps:

[0050] Step 1. Weigh 60 mg graphene with an electronic balance, and put the weighed graphene into a reagent bottle with a magnet;

[0051] Step 2, add 4mL dimethylbenzene in the reagent bottle that graphene is housed;

[0052] Step 3. Put the reagent bottle containing graphene and xylene in step 2 into the ultrasonic cell pulverizer, set the mode to φ6, control the power of the ultrasonic cell pulverizer to 95%, and the time is 30 minutes, wherein each working time is 3 seconds Rest for 2 seconds to get a mixture of roughly dispersed graphene and dispersion solvent;

[0053] Step 4, put the mixed solution of roughly dispersed graphene and dispersing solvent in step 3 into an ultrasonic cleaner for ultrasonication, the ultrasonic time is 90min without particles, and obtain a finely dispersed graphene dispersion;

[0054] Step 5, weigh 1200mg dodecy...

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Abstract

The invention discloses an anticorrosive coating and a preparation method thereof. The preparation method comprises the following steps: firstly, preparing graphene dispersion liquid; then adding a modified substance into the graphene dispersion liquid, and stirring to obtain modified graphene dispersion liquid, wherein the modified substance is dodecylamine, and the molecular weight of the modified substance is 185.35; secondly, adding the modified graphene dispersion liquid into a component A of a zinc-containing coating, and uniformly stirring to obtain a mixed solution; and finally, addinga component B of the zinc-containing coating into the mixed solution, uniformly stirring, and curing to obtain the anticorrosive coating. The dodecylamine is added into the graphene dispersion liquid, covalent bonds are used for modifying graphene, the modified graphene dispersion liquid is obtained, and agglomeration of the graphene is avoided; the modified graphene dispersion liquid is added into the zinc-containing coating, so that the anticorrosive effect of the graphene in the coating is improved, the crosslinking effect of the graphene and zinc powder in the coating is promoted, the anticorrosive effect of the coating is improved, the preparation process is simple, and the anticorrosive coating is an environment-friendly coating.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion coatings, in particular to an anti-corrosion coating and a preparation method thereof. Background technique [0002] Corrosion has always been one of the major problems restricting the economic development of various countries. The direct economic loss of about 2.5 trillion U.S. dollars in the world is caused by corrosion every year. Corrosion also poses a threat to human health and safety. The loss caused by corrosion in our country reaches trillions of yuan every year, and corrosion in the field of heavy-duty anti-corrosion of marine ships accounts for a large proportion. Among the many anti-corrosion measures, coating metal with anti-corrosion coating is one of the most cost-effective methods. [0003] At present, several anti-corrosion coatings are widely used, mainly epoxy, polyurethane and zinc-rich primer coatings. Among them, zinc-rich primer coatings have shielding effect, electro...

Claims

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Application Information

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IPC IPC(8): C09D5/10C09D7/62C09D7/20C09D163/00
CPCC08K2003/0893C09D5/106C09D7/20C09D7/62C09D163/00C08K3/08C08K9/04C08K3/042
Inventor任巍马艳杰牛刚李杰慧
OwnerXI AN JIAOTONG UNIV