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Graphene modified inorganic potassium silicate coating and preparation method thereof

A technology of graphene modification and potassium silicate, which is applied in the direction of alkali metal silicate coatings, anti-corrosion coatings, coatings, etc., to achieve the effects of improving fluidity, improving corrosion resistance, and improving overall corrosion resistance

Inactive Publication Date: 2020-07-07
SPECIAL EQUIP SAFETY SUPERVISION INSPECTION INST OF JIANGSU PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to prepare a kind of graphene-modified inorganic potassium silicate coating and preparation method thereof for the problems existing after the use of existing inorganic silicate coatings, realize the anti-corrosion effect under low filler and improve coating The hardness and flexibility of the layer itself

Method used

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  • Graphene modified inorganic potassium silicate coating and preparation method thereof
  • Graphene modified inorganic potassium silicate coating and preparation method thereof
  • Graphene modified inorganic potassium silicate coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] The preparation method of graphene modified inorganic potassium silicate coating comprises the following steps:

[0033] (1) Preparation of high modulus potassium silicate solution

[0034] Weigh the potassium silicate solution with a modulus of 2.5 and the silica sol according to a mass ratio of 1:1, the mass fraction of silicon dioxide in the silica sol is 20%, and place the weighed potassium silicate solution with a modulus of 2.5 in three ports In the flask, stir magnetically at a stirring rate of 500r / min, then slowly drop the silica sol into the three-necked flask, adjust the temperature to 80°C, and add an appropriate amount of water to make the solution appear in a vortex state during the entire stirring process, stirring After 40 minutes, a potassium silicate solution with a modulus of 5.5 was obtained.

[0035] (2) Preparation of silicone acrylic emulsion

[0036] In 100g of distilled water, add 25g of acrylate monomer and 9g of vinyltriethoxysilane, stir an...

Embodiment 2

[0042] The preparation method of graphene modified inorganic potassium silicate coating comprises the following steps:

[0043] (1) Preparation of high modulus potassium silicate solution

[0044] Weigh the potassium silicate solution with a modulus of 2.5 and the silica sol according to a mass ratio of 1.5:1, the mass fraction of silicon dioxide in the silica sol is 20%, and place the weighed potassium silicate solution with a modulus of 2.5 in three ports In the flask, stir magnetically at a stirring rate of 500r / min, then slowly drop the silica sol into the three-necked flask, adjust the temperature to 85°C, and add an appropriate amount of water to make the solution appear in a vortex state during the entire stirring process, and stir After 40 minutes, a potassium silicate solution with a modulus of 6.5 was obtained.

[0045] (2) Preparation of silicone acrylic emulsion

[0046] In 150g of distilled water, add 30g of acrylate monomer and 10g of vinyltriethoxysilane, stir...

Embodiment 3

[0052] The preparation method of graphene modified inorganic potassium silicate coating comprises the following steps:

[0053] (1) Preparation of high modulus potassium silicate solution

[0054] Weigh the potassium silicate solution with a modulus of 2.5 and the silica sol according to a mass ratio of 1:1, the mass fraction of silicon dioxide in the silica sol is 20%, and place the weighed potassium silicate solution with a modulus of 2.5 in three ports In the flask, stir magnetically at a stirring rate of 500r / min, then slowly drop the silica sol into the three-necked flask, adjust the temperature to 80°C, and add an appropriate amount of water to make the solution appear in a vortex state during the entire stirring process, stirring After 40 minutes, a potassium silicate solution with a modulus of 5.5 was obtained.

[0055] (2) Preparation of silicone acrylic emulsion

[0056] In 100g of distilled water, add 25g of acrylate monomer and 9g of vinyltriethoxysilane, stir an...

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Abstract

The invention discloses a graphene modified inorganic potassium silicate coating. The coating is prepared from the following components in percentage by weight: 10 to 20 percent of a high-modulus potassium silicate solution, 1 to 3 percent of a silane coupling agent, 8 to 10 percent of a silicone acrylic emulsion, 10 to 20 percent of sodium aluminosilicate, 0.1 to 2 percent of graphene, 15 to 20 percent of zinc powder, 1 to 3 percent of attapulgite, 1.5 to 1.8 percent of aid and 20 to 30 percent of deionized water. The invention further discloses a corresponding preparation method. The preparation method comprises the following steps: preparing the high-modulus potassium silicate solution, the silicone acrylic emulsion, a graphene dispersion solution and the like. The coating prepared fromthe graphene-modified inorganic potassium silicate coating has good toughness, adhesion and hardness, the overall corrosion resistance of the coating is improved, metal surface erosion is effectivelyprevented, and the graphene-modified inorganic potassium silicate coating has extremely wide application in preparation of metal anticorrosive coatings.

Description

technical field [0001] The invention belongs to the technical field of inorganic silicate coatings, in particular to a graphene-modified inorganic potassium silicate coating and a preparation method thereof. Background technique [0002] At present, commercially available inorganic silicate coatings usually use inorganic potassium silicate as a film-forming material. Potassium silicate has the advantages of rich raw materials, no pollution, high temperature resistance and aging resistance, and meets the requirements of energy saving and environmental protection of contemporary building materials. Although inorganic coatings have many advantages, due to the many fine cavities in the coating, chemical and electrochemical reactions are prone to occur on the surface of buildings with the prolongation of service time, resulting in surface deformation, corrosion and even perforation. Therefore, how to effectively control Corrosion on the surface of buildings has become a key issue...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/04C09D5/10C09D7/61C09D7/65C08F220/14C08F220/18C08F220/06C08F230/08
CPCC08F220/14C09D1/04C09D5/106C09D7/61C09D7/65C09D7/70
Inventor 刘峥苏文娟王勤生张剑王志成缪春生韦鹏飞
Owner SPECIAL EQUIP SAFETY SUPERVISION INSPECTION INST OF JIANGSU PROVINCE
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