Preparation and application method of water-based ceramic anticorrosive paint

A technology of anti-corrosion coatings and ceramics, applied in the field of surface coating, can solve the problems of high coating hardness, poor tensile strength, easy cracking of the coating film, etc., achieve low VOCs content, not easy to crack, and good temperature resistance Effect

Active Publication Date: 2014-12-10
ZIGONG INNOVATION CENT OF ZHEJIANG UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the current water-based ceramic coatings also encounter some problems in the actual application and promotion, such as the hardness of the ceramic coating is too high, the tensile strength is not good, and the coating film is easy to crack, etc.

Method used

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  • Preparation and application method of water-based ceramic anticorrosive paint
  • Preparation and application method of water-based ceramic anticorrosive paint
  • Preparation and application method of water-based ceramic anticorrosive paint

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Embodiment Construction

[0031] First of all, the raw materials used in the present invention are introduced in detail:

[0032] water-based silica sol

[0033] Aqueous silica sol in the present invention: pH 1.5-11, particle size 10nm-60nm, solid content 20%-50% nanoscale silica particle dispersion in water. Aqueous silica sol is used as one of the inorganic film-forming substances in the present invention, and chemically reacts with hydrolyzed alkoxysilane to obtain SiO 2 Network structure, so that the coating has properties such as hardness, corrosion resistance, temperature resistance and so on.

[0034] The water-based silica sol is used in both the A component and the B component in the present invention. In the A component, it is reacted with a composite silane coupling agent to obtain a mixture containing a polymer sol and a particle sol by a sol-gel technique. The polymer sol exists in the composite sol in three ways. The first is to bond to the surface of the particle water-based silica so...

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Abstract

The invention relates to a surface coating technique, and aims to provide a preparation and coating method of a water-based ceramic anticorrosive paint. The method comprises the following steps: (1) component A precuring: regulating the pH value of a water-based silica sol by using a catalyst, adding deionized water and composite organosilane, and stirring to react to obtain the component A; (2) component B precuring: mixing a water-based silica sol, a pigment, a filler and assistants, and grinding to obtain the component B; and (3) mixing before use: mixing the component B with the precured component A, and oscillating, stirring or rolling to implement compounding and curing, thereby obtaining the water-based ceramic anticorrosive paint. The water-based ceramic paint has low content of VOCs (volatile organic compounds), and the content of VOCs of the final paint can be less than 100 g/L through the control of the alkoxy silane consumption; the prepared coating is environment-friendly and energy-saving, has the advantages of high hardness and favorable temperature resistance, and has certain toughness; the coated film can not easily crack; and the hardness can be enhanced by 1-2H, and the shock resistance is enhanced to 20-30cm.Kg.

Description

technical field [0001] The invention belongs to surface coating technology, in particular to an aqueous ceramic coating and a coating method thereof. technical background [0002] Ceramic coatings originated from the sol-gel (Sol-Gel) technology in the 1960s, which laid the theoretical foundation of ceramic coatings. In 1971, H.Dislich pioneered the acquisition of ceramic oxide materials by sol-gel method using metal alkoxides as precursors, which caused a great leap in the materials industry. Water-based ceramic coating is a brand-new multi-functional, environmentally friendly and energy-saving new coating product for metal decoration and protection. It has rich raw material resources and broad market development space, and the product has good economic and social benefits. The organic-inorganic nanocomposite coating (inorganic ceramic membrane) based on the water-based sol-gel technology can not only have the toughness of the organic coating and the high strength of the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/24C04B24/42
Inventor 吴春春阙永生张玲洁申乾宏汪海风彭晓光姜益群
Owner ZIGONG INNOVATION CENT OF ZHEJIANG UNIV
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