Modified white graphene composite antioxidation coating and preparation thereof

An anti-oxidation coating and white graphene technology, applied in anti-corrosion coatings, fire-proof coatings, coatings, etc., can solve the problems of limited anti-oxidation time and fast volatilization speed, and achieve great application value, strong anti-oxidation ability, and good adhesion The effect of force and weather resistance

Active Publication Date: 2016-12-07
GUANGDONG NANOLUTION SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, boron carbide and boron nitride high-temperature anti-oxidation coatings are widely used in the market, but the limited temperature is 1000°C. When the temperature exceeds 1000°C, boron carbide or boron nitride will form a higher vapor pressure and volatilize quickly. , resulting in a limited antioxidant time

Method used

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  • Modified white graphene composite antioxidation coating and preparation thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1) surface modification of white graphene: select 5-10 layers of white graphene to soak in 0.3% oleylamine aqueous solution for 24 hours, obtain modified white graphene after centrifugation and vacuum drying;

[0023] Step 2) Preparation of modified white graphene composite anti-oxidation coating: Weigh 30 parts of acrylic resin, 10 parts of silica sol, 10 parts of KH-570 silane coupling agent and 50 parts of deionized water respectively by weight, and then add Mix and stir for 5 minutes at room temperature in a high-speed mixer. Then weigh 10 parts of spherical alumina, 20 parts of fumed silica, 10 parts of glass powder and 0.5 parts of modified white graphene and add them to a high-speed mixer in order to mix and stir. The temperature is controlled at 80°C for 15 minutes; after the end, the product is taken out Then grind for 120 minutes with a planetary grinder to obtain a composite anti-oxidation coating.

Embodiment 2

[0025] Step 1) surface modification of white graphene: select 5-10 layers of white graphene to soak in 0.3% oleylamine aqueous solution for 24 hours, obtain modified white graphene after centrifugation and vacuum drying;

[0026] Step 2) Preparation of modified white graphene composite anti-oxidation coating: Weigh 20 parts of acrylic resin, 10 parts of silica sol, 5 parts of KH-570 silane coupling agent and 40 parts of deionized water respectively by weight, and then add Mix and stir for 5 minutes at room temperature in a high-speed mixer. Then weigh 15 parts of spherical alumina, 10 parts of fumed silica, 7 parts of glass powder and 2.5 parts of modified white graphene and add them to a high-speed mixer in order to mix and stir. The temperature is controlled at 60°C and the time is 30 minutes; after the end, take out the product Then it was ground for 60 minutes by a planetary grinder to obtain a composite anti-oxidation coating.

Embodiment 3

[0028] Step 1) surface modification of white graphene: select 5-10 layers of white graphene to soak in 0.3% oleylamine aqueous solution for 24 hours, obtain modified white graphene after centrifugation and vacuum drying;

[0029] Step 2) Preparation of modified white graphene composite anti-oxidation coating: after weighing 30 parts of water-based polyurethane, 10 parts of silica sol, 8 parts of KH-570 silane coupling agent and 50 parts of deionized water in parts by weight, add in sequence Mix and stir for 5 minutes at room temperature in a high-speed mixer. Then weigh 10 parts of spherical alumina, 20 parts of fumed silica, 10 parts of glass powder and 0.5 parts of modified white graphene and add them to a high-speed mixer in order to mix and stir. The temperature is controlled at 80°C for 15 minutes; after the end, the product is taken out Then grind for 120 minutes with a planetary grinder to obtain a composite anti-oxidation coating.

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Abstract

The invention relates to the technical field of coatings and particularly discloses a modified white graphene composite antioxidation coating which comprises a liquid phase and an inorganic solid phase. The liquid phase comprises, by weight parts, 20-50 parts of matrix resin, 5-30 parts of silica sol, 5-30 parts of coupling agent and 20-60 parts of deionized water. The inorganic solid phase comprises 0.1-10 parts of modified white graphene, 5-20 parts of glass powder, 10-40 parts of spherical aluminum oxide and 5-30 parts of fumed silica. Compared with a conventional high-temperature antioxidation coating where boron nitride is added, the high-temperature antioxidation coating prepared from nanometer modified white graphene has a more excellent oxygen isolation capability effect, the number of layers of modified white graphene pieces is larger, the layers are combined more closely, and the oxygen isolation capability is higher. The antioxidation coating can bear high temperature of 1800 DEG C, is high in antioxidation capability and good in adhesion and weather resistance, the service life of a protected material is greatly prolonged, and the modified white graphene composite antioxidation coating has very high application value.

Description

technical field [0001] The invention relates to the technical field of high-temperature anti-oxidation coatings, in particular to a modified white graphene composite anti-oxidation coating and its preparation. Background technique [0002] During a series of heat treatments of steel products, the surface of steel is prone to oxidation under high temperature conditions in the atmosphere, and at the same time accompanied by the oxidation of alloy elements in the steel structure, this brings a series of problems to steel products such as reduced serviceability, energy Increased consumption and other issues seriously affect the quality and service life of steel products. So far, the world's iron and steel industry has increased product loss to 15% due to steel oxidation during the heat treatment process, resulting in a huge waste of resources. Therefore, it is an urgent problem to take measures to reduce the surface oxidation of iron and steel products under high temperature en...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D7/12
CPCC09D5/08C09D133/00C08K3/36C08K3/38C08K3/40C08K7/18C08K9/04C08K13/06C08K2003/385C08K2201/003C08L2201/08C08L2201/14C09D5/18
Inventor 段曦东李晓丰毛志浩
Owner GUANGDONG NANOLUTION SCI & TECH CO LTD
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