A kind of high temperature resistant graphene/vinyl resin anticorrosion coating and preparation method thereof

A vinyl resin and anti-corrosion coating technology, applied in anti-corrosion coatings, coatings, etc., can solve the problems of poor HF resistance, poor flexibility, and poor wear resistance of anti-corrosion coatings, and achieve excellent high-temperature flue gas corrosion resistance, good Effect of flexibility and impact resistance, preparation process and process simplification

Active Publication Date: 2019-06-07
INST OF METAL RESEARCH - CHINESE ACAD OF SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the problems of poor HF resistance, poor flexibility, and poor wear resistance of vinyl glass flake anti-corrosion coatings, the object of the present invention is to provide a high-temperature resistant graphene / vinyl resin anti-corrosion coating and its preparation method. It is a vinyl composite coating that replaces glass flakes as a filler. It is used for the anticorrosion of flues and chimneys. It can take into account high temperature resistance, acid resistance, and HF corrosion resistance. The comprehensive performance of the coating is obviously better than that of conventional glass flake composite coatings.

Method used

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  • A kind of high temperature resistant graphene/vinyl resin anticorrosion coating and preparation method thereof
  • A kind of high temperature resistant graphene/vinyl resin anticorrosion coating and preparation method thereof
  • A kind of high temperature resistant graphene/vinyl resin anticorrosion coating and preparation method thereof

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preparation example Construction

[0047] The preparation process of anticorrosion coating of the present invention is as follows:

[0048] Add vinyl resin, graphene / vinyl resin masterbatch, diluent and additives into the mixer according to the formula ratio and stir at a constant speed at a speed of 500-800 rpm, stirring for 1-10 hours, so that various materials are mixed evenly The component A can be obtained after loading; the three components A, B, and C can be mixed evenly in proportion, and then it can be used. By weight percentage, A component accounts for 52.8~99.2%, B component accounts for 0.33~34.7%, C component accounts for 0.32~26.1%; In A component, the content range of graphene is 0.064~4.7wt% ( Preferably it is 1 to 3 wt%). After being applied and dried according to the conventional method, a corrosion protection coating with high temperature and acid flue gas corrosion resistance can be prepared.

Embodiment 1

[0051] Add 1000g of graphene powder prepared by the intercalation exfoliation method into 30kg of hexanol, and disperse it ultrasonically for 30 minutes to obtain a transiently dispersed graphene / alcohol suspension; mix the above suspension with 10kg of vinyl resin Stir mechanically for 5 hours, with a stirring speed of 200 rpm; after stirring, let it stand for 10 minutes to separate the above mixed liquid; pour out the gray-white solution in the upper layer, leaving a black viscous slurry in the lower layer, and put it in a vacuum oven Heating to 120°C under medium vacuum, keeping the vacuum degree in the oven lower than 100Pa; drying for 24 hours and then taking it out to obtain a graphene / vinyl resin composite masterbatch with a graphene content of about 10wt%.

[0052] In parts by weight, the raw material composition of the composite anticorrosion coating is as follows:

[0053] The ingredients of Component A are:

[0054] 100 parts of vinyl resin;

[0055] 40 parts of 1...

Embodiment 2

[0076] The difference from Example 1 is:

[0077] In parts by weight, the composition of component A is:

[0078] 100 parts of vinyl resin;

[0079] 20 parts of 10wt% graphene / vinyl resin masterbatch;

[0080] Solvents consist of the following ingredients and proportions:

[0081] 10 parts of xylene;

[0082] 25 parts of ethanol;

[0083] Additives include the following ingredients and proportions:

[0084] 0.5 part of defoamer;

[0085] Leveling agent 0.5 part;

[0086] 0.5 parts of anti-settling agent;

[0087] The ingredients of Part B are:

[0088] 3 parts of cumene hydroperoxide;

[0089] The composition of component C is:

[0090] 1 part of cobalt cyclooctanoate;

[0091] 1 part of diethylaniline.

[0092] In the present embodiment, the preparation process of anticorrosion coating is as follows:

[0093] (1) Uniformly mix the component A raw materials in the above weight ratio, the stirring speed is 800 rpm, and the stirring time is 5 hours;

[0094] (2) Un...

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Abstract

The invention relates to the field of high-temperature acidic flue gas corrosion protection of metal and inorganic building materials, and in particular, relates to a high-temperature-resistant graphene / vinyl-based resin anticorrosive coating and a preparation method thereof. A graphene / vinyl-based resin masterbatch with the graphene content of 10 wt% is added to vinyl-based resin, then a diluent and an auxiliary agent are added and stirred to be uniformly dispersed, and a component A is formed; a component B is a curing agent, and a component C is a curing accelerator. According to the weight percentage, the component A accounts for 52.8-92.7% of, the component B accounts for 3.3-33.0%, and the component C accounts for 3.1-24.7%. In the component A, the content of graphene is in a range of 0.064-4.7 wt%. The graphene / vinyl-based resin anticorrosive coating is prepared by mixing and stirring evenly the three components; after the coating is coated and dried by a conventional method, a corrosion protection coating layer resistant to high-temperature acidic flue gas corrosion can be prepared. Compared with the prior art, the prepared graphene composite coating layer can take high-temperature resistance, acid resistance and HF corrosion resistance into account, and the comprehensive performance of the coating is superior to that of a conventional glass flake composite coating.

Description

technical field [0001] The invention relates to the field of high-temperature acid flue gas corrosion protection for metal and inorganic building materials, in particular to a high-temperature-resistant graphene / vinyl resin anti-corrosion coating for flue anti-corrosion with high-temperature flue gas corrosion resistance and a preparation method thereof. Background technique [0002] In my country's energy structure, the proportion of coal-fired thermal power generation accounts for about 70%. Thermal power plants mainly use high calorific value coal, and more than 50% of the coal is bituminous coal, followed by lean coal, and anthracite only accounts for less than one-tenth. The coal combustion process produces a large amount of silicon-calcium dust, and at the same time emits a large amount of acid gas mainly composed of sulfur dioxide and compounds containing fluorine, chlorine, and nitrogen elements. These dusts and gases will cause huge chemical corrosion and physical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D161/06C09D7/61C09D5/08
Inventor 裴嵩峰黄坤任文才成会明
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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