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A kind of boride-based infrared coating and its preparation method and application

An infrared coating, boride technology, applied in coating, chemical industry, sustainable manufacturing/processing, etc., can solve the problems of difference between heating center temperature and edge temperature, uneven heating of smoke-releasing materials, large heat loss, etc. Achieve the effect of improving heating efficiency, excellent infrared radiation performance and low price

Active Publication Date: 2022-07-12
HUBEI CHINA TOBACCO IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the heating mode of this structure, the heat loss is large during the transfer process, and the heating efficiency is low, which makes the temperature of the heating center and the edge temperature different, and the smoke-releasing material is heated unevenly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Preparation and application of a boride-based infrared coating

[0023] (1) According to the weight percentage, the LaB 6 50wt%, TiB 2 10wt% and SiB 6 40wt% mixed grinding ball obtains boride infrared radiation material;

[0024] (2) Select 85wt% boride infrared radiation material, 1wt% Na 2 HPO 3 , 10wt% silica sol aqueous solution (the mass fraction of silica sol is 45%) and 4wt% B 2 O 3 , put it into a dispersing and grinding integrated machine and stir to make a viscous suspension fluid to obtain a boride-based infrared coating;

[0025] (3) The coating obtained above is sprayed on the surface of the electric heating body, and dried at 80° C. for 50 minutes to obtain a boride-based infrared coating.

[0026] The infrared coating prepared in this example was tested with a dual-band emissivity tester. At 25°C, the infrared emissivity in the 3-5μm band was 0.971; at 300°C, the infrared emissivity in the 3-5μm band was 0.986.

Embodiment 2

[0028] Preparation and application of a boride-based infrared coating

[0029] (1) 25wt% LaB 6 , 25%wt CaB 6 , 10%wt TiB 2 and 40%wt SiB 6 Mixing grinding balls to obtain boride infrared radiation material;

[0030] (2) Take 70wt% of boride infrared radiation material, 4wt% of (NH 4 ) 2 HPO 3 , 20wt% silica sol aqueous solution (the mass fraction of silica sol is 45%) and 6wt% B 2 O 3 , put it into a dispersing and grinding integrated machine and stir to make a viscous suspension fluid to obtain a boride-based infrared coating;

[0031] (3) The coating obtained above is brushed on the surface of the electric heating body, and dried at 80° C. for 50 minutes to obtain a boride-based infrared coating.

[0032] The infrared coating prepared in this example was tested with a dual-band emissivity tester. At 25°C, the infrared emissivity in the 3-5μm band was 0.979; at 300°C, the infrared emissivity in the 3-5μm band was 0.981.

Embodiment 3

[0034] Preparation and application of a boride-based infrared coating

[0035] (1) LaB with a weight percentage of 16.67 wt % 6 , CaB 6 , TiB 2 , ZrB 2 , HfB 2 and SiB 6 Mixing grinding balls to obtain boride infrared radiation material;

[0036] (2) Take 70wt% of boride infrared radiation material, 4wt% of Na 2 HPO 3 , 20wt% silica sol aqueous solution (the mass fraction of silica sol is 45%) and 6wt% B 2 O 3 , put it into a dispersing and grinding integrated machine and stir to make a viscous suspension fluid to obtain a boride-based infrared coating;

[0037] (3) The coating obtained above is sprayed on the surface of the electric heating body, and dried at 80° C. for 50 minutes to obtain a boride-based infrared coating.

[0038] The infrared coating prepared in this example was tested with a dual-band emissivity tester. At 25 °C, the infrared emissivity in the 3-5 μm band was 0.943; at 300 ° C, the infrared emissivity in the 3-5 μm band was 0.955.

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Abstract

The invention relates to the field of tobacco heating, in particular to a boride-based infrared coating and a preparation method and application thereof. The boride-based infrared coating of the invention uses the boride infrared radiation material as the raw material, the preparation method is simple and feasible, and the price is low; the infrared coating can be coated on the surface of the heating body to form a high-efficiency infrared coating, and has excellent Infrared radiation performance, the prepared infrared coating has an infrared emissivity of 0.943-0.979 in the 3-5μm band at 25°C; and an infrared emissivity of 0.955-0.986 in the 3-5μm band at 300°C. The emissivity is high in the tobacco heating temperature range and the tobacco infrared response band range, thereby realizing uniform heating of the tobacco through infrared radiation, and improving the heating efficiency.

Description

technical field [0001] The invention relates to the field of tobacco heating, in particular to a boride-based infrared coating and a preparation method and application thereof. Background technique [0002] Heat not burn tobacco product is a new type of tobacco product that produces smoke release effect by heating different forms of tobacco materials. It started in the 1980s and is one of the important categories of new tobacco products. This "heat-not-burn" method allows tobacco to be heated only at a lower temperature (generally lower than 500°C), avoiding the generation of tar and a large number of harmful compounds caused by high-temperature combustion of tobacco, and because there is basically no sidestream smoke It will not produce second-hand smoke, and will not have an impact on the public environment. [0003] The way to achieve heat not burn tobacco products is generally to physically separate the tobacco from the heat source. Therefore, the quality of the heat pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D7/61A24F40/46
CPCC09D1/00C09D7/61A24F40/46Y02P20/10
Inventor 刘华臣谭健吴聪唐良颖黄婷
Owner HUBEI CHINA TOBACCO IND