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Water-based inorganic coating and preparation method thereof

A water-based inorganic coating and inorganic filler technology, applied in fire-resistant coatings, coatings, etc., can solve the problems of failing to exceed 1000 ℃, incompatibility with pickling performance, and only satisfying temperature resistance, so as to improve pickling resistance and low temperature. Excellent film-forming properties and the effect of improving high temperature resistance

Inactive Publication Date: 2022-02-25
河北欧禹科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to address the problem that the current water-based high-temperature resistant coatings have a temperature resistance of 900°C and fail to break through 1000°C. At the same time, the existing water-based high-temperature resistant coatings only meet the temperature resistance and cannot be compatible with pickling performance. , provide a kind of waterborne inorganic paint and preparation method thereof

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  • Water-based inorganic coating and preparation method thereof
  • Water-based inorganic coating and preparation method thereof
  • Water-based inorganic coating and preparation method thereof

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preparation example Construction

[0045] The invention also provides a preparation method of the water-based inorganic paint, which is used to prepare the water-based inorganic paint. The preparation method comprises the following steps:

[0046] S1 sintering treatment to obtain inorganic filler, ready for use.

[0047] The sintering process is carried out in a sintering machine, and the parameters during the sintering process are set as follows: heating from room temperature to 180-250°C at a heating rate of 3-4°C / min, and keeping the temperature for 45min, and then continuing to heat at a heating rate of 5°C / min Heating rate to 400-600°C, holding for 2 hours, and finally heating at a heating rate of 4.5°C / min to 980-1200°C, holding for 3 hours, and then cooling with the furnace.

[0048]In the present invention, the high temperature resistance of the inorganic filler is improved by stabilizing the inorganic filler, that is, the corresponding sintering process is adopted, and its pickling resistance is impro...

Embodiment 1

[0055] This embodiment provides a water-based inorganic paint, the composition of which is as follows in parts by weight: 20 parts of silica sol, 30 parts of high-temperature-resistant inorganic pigments and fillers, 2.85 parts of additives, and 47.15 parts of deionized water. Deionized water is alkaline with a pH of 10. The particle size of high temperature resistant inorganic pigments and fillers is 800 mesh.

[0056] Wherein, the composition by weight of the high-temperature-resistant inorganic pigment and filler is as follows: 12 parts of lithopone, 10 parts of alumina powder, 5 parts of talcum powder, 3 parts of sepiolite, and 2 parts of microsilica powder. The alumina powder is γ-type alumina powder, which is obtained by heating aluminum hydroxide at 145° C. in a rotary evaporator. The additives are composed in parts by weight as follows: 0.2 part of methyl cellulose, 0.2 part of n-octanol, 0.15 part of sodium oleate, and 0.3 part of sodium bentonite.

[0057] In summa...

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Abstract

The invention discloses a water-based inorganic coating and a preparation method thereof. The water-based inorganic coating comprises the following components in parts by weight: 20-50 parts of a film forming matter, 10-35 parts of high-temperature-resistant inorganic pigment filler, 0.5-3 parts of an auxiliary agent and 15-50 parts of deionized water. Modification treatment is performed on the basis of Al2O3 nanoparticles to obtain a film forming matter. The sum of the components in the water-based inorganic coating is 100. The particle size of the high-temperature-resistant inorganic pigment filler is 400-800 meshes, and the high-temperature-resistant inorganic pigment filler comprises an inorganic pigment and an inorganic filler. The inorganic filler is obtained based on sintering treatment. The water-based inorganic coating disclosed by the invention is excellent in low-temperature film-forming property, has the characteristics of high temperature resistance and easiness in acid pickling, is suitable for tracking and marking of a high-temperature object, has the waterproof characteristic and can be cleaned by acid pickling within a short time. According to the preparation method, the water-based inorganic coating with high-temperature resistance as high as 1000 DEG C can be prepared, so that the water-based inorganic coating is suitable for tracking and marking high-temperature objects, and the technical problem that the high-temperature objects are difficult to track and mark is solved.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a water-based inorganic coating, and also to a preparation method of the water-based inorganic coating. Background technique [0002] Quality tracking, also known as product tracking, is a quality management method widely used at home and abroad. It plays an important role in market research, after-sales service, quality improvement, new product research and development, and product life cycle quality monitoring. For metal high-temperature objects, in order to track the actual quality in the production process, characters must be sprayed on the surface. Due to the high surface temperature, taking the continuous casting slab of a steelmaking plant as an example, the surface temperature can be as high as 600-800°C , general coatings cannot meet the requirements. In addition, some hot-rolled parts in the steelmaking plant need further heat treatment after spraying and marking, and the heat ...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D7/61
CPCC09D1/00C09D5/18C09D7/61
Inventor 胡树新
Owner 河北欧禹科技有限公司
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