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Graphene water-based zinc silicate coating, application thereof and anticorrosive 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, improve adhesion, excellent cathodic corrosion protection performance, and meet harsh needs. Effect

Active Publication Date: 2019-07-09
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, application thereof and anticorrosive coating
  • Graphene water-based zinc silicate coating, application thereof and anticorrosive coating
  • Graphene water-based zinc silicate coating, application thereof and anticorrosive coating

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Embodiment 1 to 5

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

[0072] Component A: Potassium silicate solution (the molar ratio of silicon dioxide to alkali metal oxide is 5.5), silane coupling agent and graphene slurry are mixed evenly.

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

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

Embodiment 6

[0093] The difference from Example 1 is: the molar ratio of silicon dioxide 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 have achieved 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, which provides excellent cathodic corrosion protection, hardness, wear resistance and heat resistance, and can self-repair and continue to protect 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. Adding 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 ...

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Abstract

The invention provides a graphene water-based zinc silicate coating, application thereof and an anticorrosive coating. The graphene water-based zinc silicate coating comprises water-based alkali metalsilicate, zinc powder, a silane coupling agent and graphene. A potassium silicate solution and zinc powder are combined for use, the potassium silicate solution and the zinc powder can be rapidly self-cured to form a hard thick film coating, so that the formed coating has excellent cathode corrosion protection performance, hardness, wear resistance and heat resistance, and protection can be continued through self-repairing when the coating is damaged. By adding the silane coupling agent, the coating can be dewatered more uniformly, so that the adhesive force of the coating to steel can be improved. The graphene is added, so that the overall strength of the coating can be improved, and the adhesiveness of the inorganic coating on the surface of steel can be further improved. Therefore, thegraphene water-based zinc silicate coating has excellent cathode corrosion protection performance, adhesive force, hardness, wear resistance and heat resistance, and can be smeared on steel with lowsurface treatment, so that the construction efficiency is improved.

Description

technical field [0001] The invention relates to an anti-corrosion coating, in particular to a graphene water-based zinc silicate coating, its application and an anti-corrosion coating. Background technique [0002] Silicate has been used as a film former for more than a century, and metallic zinc has a history of about 150 years as an antirust pigment. 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 aqueous alkali metal-polysilicate solutions, generally of the formula M 2 SiO 3 . molar ratio SiO 2 :M 2 O is very important and can be from 2.5:1 to 5.5:1. In the 1930s, Australia first combined zinc powder pigments with 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 curing ...

Claims

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Application Information

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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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