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Preparation method of black low-infrared-emissivity material

A low-infrared emission, black technology, used in fire-retardant coatings, camouflage coatings, coatings, etc., can solve the incompatibility of physical and mechanical properties and construction performance with low emissivity, difficult processing of low-infrared emissivity materials, and insufficient color varieties. problem, to achieve good thermal infrared stealth effect, reduce recognition ability, and eliminate the effect of typical contour features

Inactive Publication Date: 2017-05-10
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The low-infrared emissivity materials currently developed have the disadvantages of difficult processing, high cost, and poor stability; existing infrared stealth coatings have been colored, but there are still insufficient color varieties, and low-emissivity in terms of physical and mechanical properties and construction performance. Rate incompatibility, poor practicability, etc.

Method used

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  • Preparation method of black low-infrared-emissivity material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of a black low infrared emissivity material, the steps are as follows:

[0023] 1. Experimental part

[0024] 1. Experimental raw materials: use aluminum hydroxide [molecular formula Al(OH) 3 ], phosphoric acid (molecular formula H 3 PO 4 ), chromium trioxide (molecular formula CrO 3 ), methanol (molecular formula CH 3 OH), manganese dioxide powder and water (which can be ultrapure water, distilled water or deionized water) are used as raw materials for experiments, and each experimental raw material is provided by Chengdu Kelong Chemical Reagent Factory;

[0025] 2. Experimental instruments: The models and manufacturers of the experimental instruments used in the synthesis experiment and sample characterization process are shown in Table 1 below.

[0026] Table 1: Main Experimental Instruments

[0027] name model Instrument provider Electronic balance FA-1004 Shanghai Sunny Hengping Scientific Instrument Co., Ltd. ...

Embodiment 2～14

[0038] A method for preparing a black low-infrared emissivity material. In Examples 2 to 14, the amount of manganese dioxide powder in the step b of preparing the black low-infrared emissivity material corresponds to: 1g, 3g, 5g, 7g, 10g, 15g, 20g, 25g, 30g, 35g, 40g, 45g, 50g and 55g; others are the same as in Example 1, omitted.

Embodiment 15

[0040] A method for preparing a black low-infrared emissivity material, the steps are: take 100 parts by mass of chromium aluminum phosphate, place it in a reactor and heat it to 75°C, then add 1 part by mass of manganese dioxide powder, react for 35 minutes under stirring, and then put After the reaction, the material was heated to 175°C and kept for 3.5 hours to react for 3.5 hours, and a black low-infrared emissivity material (or called: MnO 2 - chromium aluminum phosphate based low infrared emissivity material).

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Abstract

The invention discloses a preparation method of a black low-infrared-emissivity material. The method is characterized by comprising the following steps: taking 100 parts by mass of aluminum chromium phosphate, putting the aluminum chromium phosphate into a reactor, heating to 75-85 DEG C, adding 1-55 parts by mass of manganese dioxide powder, reacting for 25-35 minutes while stirring, heating to 175-185 DEG C, and drying for 2.5-3.5 hours while keeping the temperature, thereby obtaining the black low-infrared-emissivity material. The preparation method is simple; the prepared MnO2-aluminum chromium phosphate-base low-infrared-emissivity material can resist the high temperature of up to 1100 DEG C, and the minimum moisture absorption rate is lowered to 0.06 wt%. The minimum infrared emissivity is lowered to 0.74; and the black low-infrared-emissivity material has high performance, and is suitable to be used as an infrared camouflage (stealth) paint.

Description

technical field [0001] The invention belongs to the preparation of coatings, and relates to a method for preparing a black low-infrared emissivity material. The black low-infrared emissivity material prepared by the invention is particularly suitable for use as an infrared camouflage (stealth) coating. Background technique [0002] With the rapid development of national defense high-tech, various detection technologies such as infrared detection, laser radiation, and radar detection have been favored and used by countries all over the world since their discovery. The international situation is constantly changing, the war situation is becoming more and more tense, information warfare is gradually becoming prominent, and precision-guided weapons have become the focus of military technology development around the world. With its many advantages, including high precision, high sensitivity, high frame rate, high resolution, strong anti-interference, infrared detection and guide...

Claims

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Application Information

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IPC IPC(8): C09D5/30C09D1/00C09D7/12
CPCC09D5/30C09D1/00C09D5/18C09D7/61
Inventor 霍冀川黄家建雷永林肖鹏罗娟
Owner SOUTHWEAT UNIV OF SCI & TECH
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