A kind of preparation and coating method of water-based ceramic anticorrosion coating

A technology for anti-corrosion coatings and ceramics, applied in fire-resistant coatings, coatings, etc., can solve the problems of poor tensile strength, easy cracking of the coating film, and high hardness of the coating, and achieves low cracking resistance, good temperature resistance, and VOCs content. low effect

Active Publication Date: 2016-08-24
ZIGONG INNOVATION CENT OF ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A kind of preparation and coating method of water-based ceramic anticorrosion coating
  • A kind of preparation and coating method of water-based ceramic anticorrosion coating
  • A kind of preparation and coating method of water-based ceramic anticorrosion coating

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Embodiment Construction

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

[0032] Aqueous silica sol

[0033] Water-based silica sol in the present invention: a dispersion liquid of nano-scale silicon dioxide particles in water with a pH of 1.5-11, a particle diameter of 10 nm-60 nm, and a solid content of 20%-50%. Water-based 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 hardness, corrosion resistance, temperature resistance and other properties.

[0034] Water-based silica sol is used in the A component and the B component in the present invention, reacts with the complex silane coupling agent in the A component, and obtains a mixture containing polymer sol and particle sol by sol-gel technology, There are three ways for polymer sol to exist in composite sol, the first is to bond to the surface of granula...

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Abstract

The invention relates to surface coating technology and aims to provide a preparation and coating method of an aqueous ceramic anti-corrosion coating. The method includes: (1) pre-curing the A component, first adjusting the pH value of the aqueous silica sol with a catalyst, then adding deionized water and composite organosilane for mixing, and stirring and reacting to obtain the A component; (2) pre-processing the B component Aging, mixing the components of water-based silica sol, pigments, fillers and auxiliaries and then grinding to obtain component B; (3) Mixing before use, mixing component B and pre-cured component A, by shaking , stirring or rolling to realize compound curing, and obtain water-based ceramic anti-corrosion coating. The water-based ceramic coating of the invention has low VOCs content, and through the control of the amount of alkoxysilane, the VOCs content of the final coating can be less than 100 g / L, and the prepared coating is environmentally friendly and energy-saving, not only has high hardness, good temperature resistance, but also The coating has a certain toughness, the coating film is not easy to crack, the hardness can be increased by 1-2H, and the impact resistance can be increased to 20-30cm·Kg.

Description

technical field [0001] The invention belongs to surface coating technology, and in particular relates to a water-based ceramic paint 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 for ceramic coatings. In 1971, H. Dislich used the sol-gel method to obtain ceramic oxide materials using metal alkoxides as precursors, which caused a great leap in the material industry. Water-based ceramic coating is a brand-new multi-functional, environmentally friendly and energy-saving coating product for metal decoration and protection. It has rich raw material resources and broad market development space. The product has good economic and social benefits. The organic-inorganic nano-composite coating (inorganic ceramic film) based on water-based sol-gel technology, through the introduction of organic groups, makes the coating not only have the toughness of organ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/10C09D5/18C04B28/24C04B24/42
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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