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Graphene water-based zinc silicate coating, its application and anti-corrosion coating

An anti-corrosion coating, alkene water-based technology, used in alkali metal silicate coatings, anti-corrosion coatings, coatings, etc., can solve problems such as poor anti-corrosion performance, and achieve improved adhesion, excellent cathodic corrosion protection performance, and superior cathodic corrosion. The effect of protective properties

Active Publication Date: 2022-07-08
BEIJING BSS CORROSION PROTECTION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a graphene water-based zinc silicate coating, its application and anti-corrosion coating, to solve the problem of poor anti-corrosion performance when the existing anti-corrosion coating is applied to steel with low surface treatment

Method used

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  • Graphene water-based zinc silicate coating, its application and anti-corrosion coating
  • Graphene water-based zinc silicate coating, its application and anti-corrosion coating
  • Graphene water-based zinc silicate coating, its application and anti-corrosion coating

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Embodiment 1 to 5

[0071] The composition of the graphene water-based zinc silicate paint in Examples 1 to 5 of the present invention is shown in Table 1 (represented in parts by weight), and the production technique is as follows:

[0072] Component A: Mix potassium silicate solution (the molar ratio of silica to alkali metal oxide is 5.5), silane coupling agent and graphene slurry uniformly.

[0073] Component B: Zinc powder (particle size 5-9 microns).

[0074] Before use, according to the weight ratio shown in Table 1, the A component and the B component are mixed to prepare the graphene water-based zinc silicate coating of the present invention.

Embodiment 6

[0093] The difference from Example 1 is that the molar ratio of silica to alkali metal oxide is 5.0:1.

Embodiment 7

[0095] The difference from Example 1 is that the particle size of the zinc powder is relatively uniform, and the particle size is 8 μm.

[0096] Table 2

[0097]

[0098] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

[0099]The combination of potassium silicate solution and zinc powder can quickly self-cure to form a hard thick film coating, providing superior cathodic corrosion protection, hardness, wear resistance and heat resistance, self-healing and continuous protection when the coating is damaged . Adding a silane coupling agent can make the dehydration more uniform, thereby improving the adhesion of the coating to the steel. The addition of graphene can increase the overall strength of the coating and further improve the adhesion of the inorganic coating on the steel surface. The above factors make the graphene water-based zinc silicate coating provided by the pres...

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Abstract

The invention provides a graphene water-based zinc silicate coating, an application thereof and an anti-corrosion coating. The graphene water-based zinc silicate coating includes water-based alkali metal silicate, zinc powder, silane coupling agent and graphene. The combination of potassium silicate solution and zinc powder, both of which can self-cure quickly to form a hard thick film coating, which makes the coating formed have excellent cathodic corrosion protection performance, hardness, wear resistance and heat resistance , and can continue to protect through self-healing when the coating is damaged. The addition of silane coupling agent can make the dehydration of the coating more uniform, which is beneficial to improve the adhesion of the coating to steel. The addition of graphene can increase the overall strength of the coating, and can further improve the adhesion of the inorganic coating on the steel surface. Therefore, the above graphene water-based zinc silicate coating has superior cathodic corrosion protection performance, adhesion, hardness, wear resistance and heat resistance, and can be coated on steel with low surface treatment to improve construction efficiency.

Description

technical field [0001] The invention relates to anti-corrosion coatings, in particular to a graphene water-based zinc silicate coating, applications thereof and anti-corrosion coatings. Background technique [0002] Silicates have been used as film formers for over a century, while metallic zinc has been used as a rust preventive pigment for about 150 years. Waterborne inorganic silicates have been known and used since 1850, but not for coatings. They are based on the alkali metals sodium, potassium and lithium, or mixtures of these alkali metals, usually in the form of an aqueous alkali metal-polysilicate solution with the general formula M 2 SiO 3 . Molar ratio to SiO 2 :M 2 O is important and can be from 2.5:1 to 5.5:1. In the 1930s, Australia first combined zinc powder pigments and water-based alkali metal silicates to develop water-based inorganic zinc silicate coatings. They were using a low-silica, water-based alkali metal silicate binder that required heat cur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/04C09D5/10C09D7/61
CPCC09D1/04C09D5/106C09D7/61C09D5/18
Inventor 谢静李依璇樊艳达赵金庆何永敬
Owner BEIJING BSS CORROSION PROTECTION IND
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