Thermal insulation coating sprayed on surface of Q235B steel under high-temperature condition and using method of thermal insulation coating

A Q235B, heat insulation technology, applied to the surface coating liquid device, fireproof coating, special surface, etc., can solve the problems of cracking and falling off, the strength can not meet the actual requirements, etc., to prevent local cracking, preparation and use The method is simple and the structure is uniform and compact

Pending Publication Date: 2020-12-04
吴征
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problem that the existing heat-insulating paint is used for Q235B steel, the strength cannot meet the actual requirements, and the problem that the Q235B steel will crack and fall off during the cooling and heating process of the Q235B steel after spraying, provides a kind of heat-insulating coating for Q235B steel surface under high temperature conditions. Sprayed thermal insulation coating and method of application thereof

Method used

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  • Thermal insulation coating sprayed on surface of Q235B steel under high-temperature condition and using method of thermal insulation coating
  • Thermal insulation coating sprayed on surface of Q235B steel under high-temperature condition and using method of thermal insulation coating
  • Thermal insulation coating sprayed on surface of Q235B steel under high-temperature condition and using method of thermal insulation coating

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specific Embodiment approach 1

[0024] Specific Embodiment 1: In this embodiment, a kind of thermal insulation coating used for spraying on the surface of Q235B steel under high temperature conditions is composed of 40-60% curing agent powder and 40-60% potassium silicate emulsion by mass percentage; the curing agent The powder consists of 20-60% of light calcium, 15-40% of glass beads and 20-45% of glass fibers according to the mass percentage.

[0025] The chemical formula of the potassium silicate emulsion described in this embodiment is K 2 SiO 3 9H 2 O; the potassium silicate emulsion solvent mass fraction is 49%, and the solvent is water; the chemical formula of the light calcium is CaCO 3 ; The glass microspheres are common thermal insulation raw materials in the industry, and play a major role in the thermal insulation performance of the coating.

[0026] This embodiment changes the internal structure of the coating by adding light calcium and glass fiber to the common heat-insulating coating form...

specific Embodiment approach 2

[0027] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the modulus of the potassium silicate emulsion is 2. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0028] Embodiment 3: This embodiment is different from Embodiment 1 or Embodiment 2 in that: the length of the glass fiber is 3 mm to 5 mm. Others are the same as in the first or second embodiment.

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Abstract

The invention belongs to the technical field of thermal insulation coatings, and particularly relates to a thermal insulation coating sprayed on the surface of Q235B steel under a high-temperature condition and a using method of the thermal insulation coating. The invention aims to solve the problems that the strength of the existing thermal insulation coating used for Q235B steel cannot meet theactual requirements, and the existing thermal insulation coating cracks and falls off along with the cooling and heating processes of the Q235B steel after being sprayed. According to the invention, light calcium carbonate and glass fibers are added into a common thermal insulation coating formula taking potassium silicate and glass beads as raw materials, so that the coating has a thermal expansion coefficient tending to be consistent with that of Q235B, and meanwhile, the strength of the coating is improved, so that the coating does not crack or fall off along with cooling and heating of theQ235B after being sprayed. The coating can be sprayed on the surface of scorching Q235B under the high-temperature operation condition when thermal equipment such as a cement kiln operates to be rapidly cured, and is tightly combined with the surface of steel.

Description

technical field [0001] The invention belongs to the technical field of heat-insulating coatings, in particular to a heat-insulating coating used for spraying on the surface of Q235B steel under high-temperature conditions and an application method thereof. Background technique [0002] Energy saving is an inevitable requirement for human beings to achieve green and sustainable development, and it is very important in dealing with environmental pollution, energy consumption and other issues. In response to the national call for energy conservation and emission reduction, it is a practical need to add heat insulation layers to equipment such as boilers and sintering kilns to reduce the heat dissipation loss of the equipment, thereby reducing the fuel consumption of thermal equipment. Among many heat insulation materials, heat insulation coating is a recently developed functional coating that blocks, reflects, and radiates near-infrared heat. It usually has the characteristics ...

Claims

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Application Information

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IPC IPC(8): C09D1/02C09D7/61C09D5/18B05D5/00B05D7/14B05D7/24
CPCB05D5/00B05D7/14B05D7/24B05D2202/10C09D1/02C09D5/18C09D7/61C09D7/70
Inventor 吴征成夙
Owner 吴征
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