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Weatherproof inorganic exterior wall coating based on graphene and mullite and preparation method thereof

A technology of exterior wall coatings and mullite, which is applied in the direction of anti-corrosion coatings, fire-proof coatings, anti-fouling/underwater coatings, etc., can solve the problem of adhesion and other properties that need to be improved, affect the application effect of graphene, and the dispersion effect of graphene is not good Good and other problems, to achieve the effect of light apparent density, good thermal shock stability, and improved anti-corrosion and weather resistance

Active Publication Date: 2019-01-15
GUANGXI XUTENG INDUSTRIAL GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The Chinese invention patent with application number 201611162668.1 discloses a graphene anti-corrosion coating and its preparation method, which improves the thermal conductivity, adhesion and stability of the coating, but needs to be improved in terms of adhesion and other properties
The Chinese invention patent with application number 201310131419.6 discloses a graphene inorganic coating and its application method, but once the amount of graphene added exceeds 5%, the film quality will be affected
In order to solve the existing deficiencies, the object of the present invention is to provide a graphene-based inorganic coating, because graphene has good thermal stability, excellent impermeability and effective barrier to oxygen, water and corrosive ions, etc. It has obvious advantages in metal anti-corrosion, but the strong van der Waals force and high specific surface area between graphene layers make graphene in coatings easy to gather together, which limits its wide use
Studies have shown that various methods can be used to modify graphene to disperse it, but the application effect of graphene is often affected by the poor dispersion effect of graphene or its short anti-sedimentation time.

Method used

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  • Weatherproof inorganic exterior wall coating based on graphene and mullite and preparation method thereof
  • Weatherproof inorganic exterior wall coating based on graphene and mullite and preparation method thereof
  • Weatherproof inorganic exterior wall coating based on graphene and mullite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The weather-resistant inorganic exterior wall coating based on graphene and mullite includes the following components according to mass percentage: 5% mullite, 10% perlite, 10% graphene, 5% vitrified microbeads, 7% sepiolite, Albite 14%, light calcium carbonate 5%, bauxite 5%, nano-titanium dioxide 2%, nano-silica sol 10%, additives 23%, pure acrylic emulsion 4%; among them,

[0031]The auxiliary agent includes the following components in terms of mass percentage: 75% sodium silicate, 24% zinc phosphate, and 1% sodium hexametaphosphate;

[0032] The nano-silica sol is first modified by adding γ-methacryloxypropyltrimethoxysilane into the nano-silica sol and stirring at room temperature for 10 hours; the γ-methacryloyl The usage amount of oxypropyltrimethoxysilane is 2.0wt% of the nano-silica sol quality;

[0033] The particle size of the light calcium carbonate is 0.02 μm;

[0034] The preparation method of described inorganic exterior wall paint, comprises the follow...

Embodiment 2

[0040] The weather-resistant inorganic exterior wall coating based on graphene and mullite includes the following components in terms of mass percentage: 10% mullite, 6% perlite, 6% graphene, 3% vitrified microbeads, 5% sepiolite, Albite 12%, light calcium carbonate 8%, bauxite 8%, nano-titanium dioxide 4%, nano-silica sol 15%, additives 20%, pure acrylic emulsion 3%; among them,

[0041] The auxiliary agent includes the following components in terms of mass percentage: 80% sodium silicate, 18% zinc phosphate, and 2% sodium hexametaphosphate;

[0042] The nano-silica sol is first modified by adding γ-methacryloxypropyltrimethoxysilane into the nano-silica sol and stirring at room temperature for 11 hours; the γ-methacryloyl The usage amount of oxypropyltrimethoxysilane is 3.0wt% of the nano-silica sol quality;

[0043] The particle size of the light calcium carbonate is 0.10 μm;

[0044] The preparation method of described inorganic exterior wall paint, comprises the followi...

Embodiment 3

[0050] The weather-resistant inorganic exterior wall coating based on graphene and mullite includes the following components in terms of mass percentages: 12% mullite, 8% perlite, 15% graphene, 3% vitrified microbeads, 9% sepiolite, Albite 6%, light calcium carbonate 5%, bauxite 5%, nano-titanium dioxide 3%, nano-silica sol 10%, additives 20%, pure acrylic emulsion 4%; among them,

[0051] The auxiliary agent includes the following components according to mass percentage: 77% of sodium silicate, 20% of zinc phosphate, and 3% of sodium hexametaphosphate;

[0052] The nano-silica sol is first modified by adding γ-methacryloxypropyltrimethoxysilane into the nano-silica sol and stirring at room temperature for 10.5 hours; the γ-methacrylic acid The usage amount of acyloxypropyltrimethoxysilane is 2.5wt% of the nano-silica sol quality;

[0053] The particle size of the light calcium carbonate is 0.06 μm;

[0054] The preparation method of described inorganic exterior wall paint, ...

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Abstract

The invention relates to a weatherproof inorganic exterior wall coating based on graphene and mullite and a preparation method thereof, and belongs to the field of graphene-based wall inorganic coatings. The weatherproof inorganic exterior wall coating includes the following components by the mass percentage: 5-15% of mullite, 6-15% of perlite, 1-20% of graphene, 2-10% of vitrified micro-beads, 3-10% of sepiolite, 6-15% of albite, 5-18% of light calcium carbonate, 5-10% of bauxite, 2-8% of nano titanium dioxide, 10-15% of nano-silica sol, 20-30% of an auxiliary agent, and 3-6% of a pure acrylic emulsion. The coating has the advantages of strong bonding strength, simple construction and scouring resistance. At the same time, under high temperature conditions, a coating layer is not blistered and cracked or does not fall off, and plays the effects of water prevention, fire prevention, salt resistance, alkali resistance, heat insulation, heat preservation, corrosion prevention, rust prevention and aging resistance.

Description

【Technical field】 [0001] The invention relates to the field of graphene-based inorganic wall paint production, in particular to a weather-resistant inorganic exterior wall paint based on graphene and mullite and a preparation method thereof. 【Background technique】 [0002] With the continuous development of my country's modern industry, the types of building materials are also very rich. There are two types of coatings on the market: one is organic coatings. For a long time, organic coatings have been widely used for their good decoration, variety and low price. However, the main raw materials of such materials generally come from natural resources such as coal, oil, and natural gas. A large amount of by-products, volatile solvents and residual monomers will be produced during processing, which are not easy to remove and are also toxic, which not only causes environmental pollution but also wastes a lot of resources and energy, and this type of coating is prone to occurrenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/18C09D5/08C09D5/16C09D7/61C09D7/62C09D7/65
CPCC09D1/00C09D5/08C09D5/1687C09D5/18
Inventor 黄聿新
Owner GUANGXI XUTENG INDUSTRIAL GROUP CO LTD
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