Solvent-free graphene oxide-glass flake anticorrosive coating and preparation method thereof

A technology for glass flakes and anti-corrosion coatings, applied in anti-corrosion coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., can solve problems such as affecting the shielding efficiency of glass flakes, increasing the difficulty of repairing and grinding, and hard glass flakes. Long-term and more effective anti-corrosion ability, easy repair and grinding, and the effect of reducing dosage

Active Publication Date: 2018-09-25
SHANGHAI ZHENHUA HEAVY IND CHANGZHOU COATINGS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this document still has the following technical defects: the damaged coating needs to be polished first when the coating is repaired in the later stage, but the glass flakes are hard and difficult to polish, and the introduction of more glass flakes will undoubtedly seriously increase the difficulty of later repairing and polishing ; Will affect the shielding efficiency of the glass flakes to a certain extent

Method used

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  • Solvent-free graphene oxide-glass flake anticorrosive coating and preparation method thereof

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Effect test

Embodiment 1

[0024] A kind of preparation of solvent-free graphene oxide-glass flake anticorrosion coating, A component prepares raw material by following mass parts: the weight part of the glass flake of graphene oxide modification is 15 parts, the weight part of epoxy resin is 30 parts, 8 parts by weight of water-based polyurethane resin, 0.5 parts by weight of castor oil, 5 parts by weight of reactive diluent, 25 parts by weight of aluminum tripolyphosphate, 20 parts by weight of titanium dioxide, and 20 parts by weight of defoaming agent 0.2 parts.

[0025] The preparation method of the glass flakes modified by graphene oxide in the A component comprises the steps:

[0026] (1) Mix 98% concentrated sulfuric acid and 30% hydrogen peroxide at a volume ratio of 7:3 to prepare a Piranha solution; then, place the glass scales in acetone, ethanol and distilled water for five minutes for ultrasonic cleaning, take them out and dry them ; then immerse the cleaned and dried glass flakes in Pira...

Embodiment 2

[0035] A kind of preparation of solvent-free graphene oxide-glass flake anticorrosion coating, A component prepares raw material by following mass parts: the weight part of the glass flake of graphene oxide modification is 18 parts, the weight part of epoxy resin is 40 parts, 15 parts by weight of water-based polyurethane resin, 1 part by weight of castor oil, 10 parts by weight of reactive diluent, 12 parts by weight of aluminum tripolyphosphate, 12 parts by weight of titanium dioxide, and 1 part by weight of defoaming agent The parts by weight are 0.5 parts.

[0036] The preparation method of the glass flakes modified by graphene oxide in the A component comprises the steps:

[0037] (1) Mix 98% concentrated sulfuric acid and 30% hydrogen peroxide at a volume ratio of 7:3 to prepare a Piranha solution; then, place the glass scales in acetone, ethanol and distilled water for five minutes for ultrasonic cleaning, take them out and dry them ; then immerse the cleaned and dried g...

Embodiment 3

[0046] A kind of preparation of solvent-free graphene oxide-glass flake anticorrosion coating, A component prepares raw material by following mass parts: the weight part of the glass flake of graphene oxide modification is 25 parts, the weight part of epoxy resin is 35 parts, 13 parts by weight of water-based polyurethane resin, 0.8 parts by weight of castor oil, 8 parts by weight of reactive diluent, 20 parts by weight of aluminum tripolyphosphate, 15 parts by weight of titanium dioxide, and 15 parts by weight of defoaming agent The parts by weight are 0.4 parts.

[0047] The preparation method of the glass flakes modified by graphene oxide in the A component comprises the steps:

[0048] (1) Mix 98% concentrated sulfuric acid and 30% hydrogen peroxide at a volume ratio of 7:3 to prepare a Piranha solution; then, place the glass scales in acetone, ethanol and distilled water for five minutes for ultrasonic cleaning, take them out and dry them ; then immerse the cleaned and d...

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Abstract

The invention discloses solvent-free graphene oxide-glass flake anticorrosive coating. The solvent-free graphene oxide-glass flake anticorrosive coating is prepared from an A component and a B component, wherein the A component is prepared from glass flakes modified by graphene oxide, an epoxy resin, an aqueous polyurethane resin, castor oil, reactive diluent, aluminum tripolyphosphate, talc, antifoaming agent and titanium dioxide; the B component is prepared from an epoxy curing agent H633, when used, the A component and the B component are uniformly mixed with the mass ratio of 1 to (0.2 to0.25). According to the solvent-free graphene oxide-glass flake anticorrosive coating provided by the invention, through the glass flakes modified by graphene oxide, on the one hand, the conditions that a graphene oxide sheet layer is evenly spread on the surface of the glass flakes and fills pores at joints between the glass flakes and flakes in a spreading state are realized, thereby improving ashielding ability of the glass flakes, and on the other hand, low temperature curing, and enhancement of the adhesion of the glass flakes in the coating are realized. The solvent-free graphene oxide-glass flake anticorrosive coating has strong adhesion, impact resistance and better salt tolerance.

Description

technical field [0001] The invention belongs to the field of anti-corrosion coatings, in particular to a solvent-free graphene oxide-glass flake anti-corrosion coating and a preparation method thereof. Background technique [0002] Corrosion coatings refer to coatings that can have long-term protective effects on the protected objects in a corrosive environment. Glass flake anti-corrosion coating is a high-build coating composed of corrosion-resistant resin as the main film-forming substance, thin glass flakes as aggregate, and various additives. Glass flake anti-corrosion coatings are widely used in the anti-corrosion engineering of metallurgy, chemical industry, petroleum, marine and other system equipment and buildings. Because the glass flakes in the coating have fish scale effect, thousands of scales are arranged in a staggered manner, forming complex twists and turns in the coating. The penetration and diffusion path of the corrosive medium makes the diffusion route o...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D175/04C09D191/00C09D7/62C09D7/61C09D5/08
CPCC08K2003/2241C08K2003/327C08L2205/03C09D5/08C09D7/61C09D7/62C09D7/70C09D163/00C08L75/04C08L91/00C08K9/06C08K9/02C08K7/00C08K3/40C08K3/32C08K3/22
Inventor 杨敏辉崔国鹏卞庆娅刘政超
Owner SHANGHAI ZHENHUA HEAVY IND CHANGZHOU COATINGS CO LTD
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