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Nano graphene polysiloxane composite paint and preparation method thereof

A technology of olefinic polysiloxane and composite coatings, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of complex operation procedures, easy cracking, poor flexibility, etc., and achieve simple operation, reduced paint film thickness, and good weather resistance Effect

Inactive Publication Date: 2018-02-23
贾生斌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to provide a kind of nano-graphene polysiloxane composite coating, which solves the problems of poor flexibility and easy cracking of existing composite coatings
[0004] Another object of the present invention is to provide a preparation method of nano-graphene polysiloxane composite coating, which solves the problem of complicated operation procedures in the existing preparation method

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0025] A preparation method of nano graphene polysiloxane composite coating is specifically implemented according to the following steps:

[0026] Step 1. The weighed polysiloxane resin 69.5%~72.5%, titanium dioxide 18%~20%, talc 2%~5%, graphene 2%~5% and leveling agent 0.1%~0.15 % Is slowly added to the dispersing machine and stirred to form a mixture, then the mixture is ground, filtered and sealed and packaged to obtain component A;

[0027] The leveling agent is BYK307, BYK306, polyetheramine or polyamide;

[0028] The stirring speed of the disperser is 900r / min~1100r / min, and the stirring time is 35min~45min.

[0029] Step 2. Add 4.4% to 8% of the curing agent to the component A obtained in step 1, and stir evenly to obtain a composite coating.

[0030] The curing agent is aminosilane or silane coupling agent;

[0031] Through the above methods, the composite coating of the present invention and the introduction of graphene can improve the adhesion and anti-corrosion performance of...

Embodiment 1

[0033] Step 1. Slowly add the weighed polysiloxane resin 69.5%, titanium dioxide 18%, talc 2%, graphene 2% and 0.1% BYK307 into the disperser to form a mixture, and then perform Grind, seal and pack after filtering to obtain component A;

[0034] The stirring speed of the disperser is 900r / min, and the stirring time is 35min.

[0035] Step 2. Add 4.4% aminosilane to the component A obtained in step 1, and stir evenly to obtain a composite coating.

Embodiment 2

[0037] Step 1. Slowly add the weighed polysiloxane resin 70%, titanium dioxide 18.5%, talc 2.5%, graphene 2.5% and 0.1% BYK307 into the disperser to form a mixture, and then perform Grind, seal and pack after filtering to obtain component A;

[0038] The stirring speed of the disperser is 950r / min, and the stirring time is 36min.

[0039] Step 2. Add 5% of aminosilane to the component A obtained in step 1, and stir evenly to obtain a composite coating.

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PUM

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Abstract

The invention discloses nano graphene polysiloxane composite paint. The paint is prepared from, by mass, 69.5%-72.5% of organopolysiloxane resin, 18%-20% of titanium dioxide, 2%-5% of talcum powder, 2%-5% of graphene, 0.1%-0.15% of a flatting agent and 4.4%-8% of a curing agent, and the sum of the mass fractions of the components is 100%. By means of introduction of graphene, the adhesive force and corrosion resistance of the composite paint can be improved, the film thickness is lowered, the impact strength is enhanced, and the bending elongation percentage is effectively increased; after curing is conducted at normal temperature, the paint can be directly spread on the surface of an alcohol-soluble inorganic zinc-rich coating, the painting process can be reduced, construction is easy, and the construction efficiency is effectively improved.

Description

Technical field [0001] The invention belongs to the technical field of coatings, and relates to a nano-graphene polysiloxane composite coating. The invention also relates to a preparation method of the composite coating. Background technique [0002] At present, my country’s heavy-duty anticorrosive coatings are mainly epoxy anti-corrosion paint and polyurethane topcoat, but their environmental protection is not ideal, their flexibility is poor, they are easy to crack, they cannot be coated on organic coatings, and they have high requirements for construction; The steel structure in acid, alkali, salt and solvent medium has a short service life; and contains a large amount of VOC, has a strong irritating smell, and is easy to poison people during the construction process and cause serious pollution to the environment. The most advanced anti-corrosion coatings available are fluorocarbon coatings. Although they have good weather resistance and salt spray resistance, they have shortc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D7/61C09D7/63C09D5/08
CPCC09D183/04C08K2003/2241C09D5/08C08L83/04C08L71/00C08L77/00C08K3/22C08K3/34C08K3/04
Inventor 贾生斌
Owner 贾生斌
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