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High temperature heat barrier material, coating, molded product and application thereof

A thermal barrier and warming technology, which is applied in the field of high-temperature thermal barrier materials and high-temperature-resistant thermal barrier materials, can solve the problems of porosity of products that are easy to absorb moisture and fall off, difficult to meet complex shapes, and high thermal conductivity of the inner layer, and achieve energy-saving effects Obvious, avoid extension, high heat reflectivity effect

Active Publication Date: 2012-02-15
SHILIN LUOHE METALLURGY EQUIP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In order to overcome the shortcomings of the existing heat barrier coatings that only play the role of heat reflection on the surface, the thermal conductivity of the inner layer is high, the coating is easy to absorb moisture and fall off after long-term storage in the air after construction, and the heat insulation effect of the shaped product is low and difficult. To meet the technical difficulties of complex shape, rapid construction and repair, the present invention has successfully developed a series of high-temperature thermal barrier material coatings and shaped products by using nanotechnology

Method used

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  • High temperature heat barrier material, coating, molded product and application thereof
  • High temperature heat barrier material, coating, molded product and application thereof
  • High temperature heat barrier material, coating, molded product and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0059] Example 1: High Temperature Thermal Barrier Material Formulation

[0060] The formula 1 of the high-temperature thermal barrier material is shown in Table 1 below.

[0061] Table 1 High temperature thermal barrier material formula 1

[0062] raw material name Specifications (mm) content(%) Actual weighed weight (kg) Remark High alumina bauxite clinker 0.07 27.0 1.35 clay 0.04 6.0 0.30 Silica powder 0.037 5.5 0.28 boric acid 0.09 5.5 0.28 sodium tripolyphosphate 0.037 1.0 0.05 Silicon carbide 0.03 17.0 0.85 polyacrylamide 0.09 1.0 0.05 F01 solution 28.5 1.43 Deionized water Level 3 test water 8.5 0.43 Total 100 5.00

[0063] Note: "F01 solution" in the table refers to one of the series products "F00 solution" produced by Shilin (Luohe) Metallurgical Equipment Company. "F00 solution" component materials are selected from a group of one ...

Embodiment 2

[0069] Embodiment 2: slurry production process steps

[0070] According to the actual weight of formula 1 or formula 2 in Example 1, take the powder part of various raw materials; add it to the test ball mill, and then add zirconia balls with a diameter of 20mm, and discharge after 2 hours of electrified ball milling. The mixed powder specification is ≥400 mesh.

[0071] According to the mixed powder, one of the corresponding "F00 solutions", and water, weigh the amount of the formula and pour it into a glass beaker, stir and mix with a small medical adjustable stirrer for 30 minutes to form a high-temperature heat barrier slurry, and then put it into storage The container is ready to use.

[0072] The specific steps of making the slurry are as follows:

[0073] 1. Weigh the weight of the main inorganic metal salt or organometallic compound solution;

[0074] 2. Weigh out the weight of various additives and mix them;

[0075]3. Mix the additive with the main inorganic meta...

Embodiment 3

[0083] Embodiment 3: make porous (honeycomb) nano-coating

[0084] The slurry of Example 2 was painted on the surface of a 1 square foot ceramic coupon with a thickness of 2 inches. Ceramic test pieces were cleaned with acetone and then allowed to dry. Put the cleaned test piece into the muffle furnace and heat it to 400 °C. After removal from the muffle furnace, brush a thin layer of slurry on the hot surface of the ceramic coupon. After cooling, several thin layers of slurry are painted on it in order, and a porous (honeycomb) nano-coating can be formed after drying.

[0085] Next, the coated surface was sectioned with a sample cutter. Microstructural analysis of cross-sectional samples is carried out by appropriate metallographic procedures. SEM micrographs of cross-sectional samples as Figure 4 shown. 44 in the figure refers to a smooth surface with porosity; 40 refers to a good bonding interface between the coating and the substrate; 42 refers to the internal coat...

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Abstract

The invention discloses a high temperature heat barrier material, coating, molded product and application thereof. When using the material formula to form a coating and a molded product, the characteristics of a porous structure (honeycomb structure) of nano / microscopic / macroscopic hole, low thermal conductivity and high temperature radiation barrier and the like are provided or showed. The material can be applied in high temperature devices with strict conditions, and greatly reduces the heat transmission generated by high temperature radiation and heat conductivity of the material when using the device at high temperature. The applied range of the material, coating and molded product includes but is not limited to high temperature stove kiln, high temperature valve, warm air duct and its device, foundry ladle, ladle and other high temperature devices of steel industry, non ferrous metal, building material, refractory material (ceramic), machinery and chemical industry high temperature stove kiln and its device, automobile, aviation, spaceflight, energy, satellite, ship, steam turbine, boiler and chemical industry high temperature devices.

Description

[0001] technical field [0002] The invention relates to a high-temperature thermal barrier material, a coating, a shaped product and applications thereof, belonging to the technical field of high-temperature resistant thermal barrier materials. Background technique [0003] In the iron and steel metallurgical industry, building materials industry and other production processes, most of them are high-temperature processes, such as ironmaking, steelmaking and steel rolling processes. Currently, the main means of ironmaking around the world is the blast furnace. Inner surfaces of steel shells such as blast furnace and ancillary facilities hot blast pipes, air supply branch pipes, hot blast main pipes, hot blast branch pipes, hot blast valves, and hot blast stoves, as well as refractory lining hot surfaces; And refractory material lining hot surface; steel rolling heating furnace, intermediate annealing furnace steel shell inner surface, and refractory material lining hot surf...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B38/00
Inventor 冯力萧东山张进张海佑陈涛
Owner SHILIN LUOHE METALLURGY EQUIP
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