Preparation method of long-wave infrared window material loaded with nano-carbon crystal
A nano-carbon crystal, long-wave infrared technology, applied in the field of preparation of long-wave infrared window materials, can solve the problems of low hardness, low mechanical strength, poor thermal shock performance, low infrared transmission, etc., to improve surface hardness and anti-wear ability, High hardness and elastic modulus, simple equipment and process requirements
Inactive Publication Date: 2018-10-02
ZHENGZHOU ARTIFICIAL DIAMOND & PROD ENG TECH RES CENT
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Problems solved by technology
However, these materials have their own problems. For example, ZnS has low infrared transmission and poor rain erosion resistance; ZnSe has good infrared performance, but low hardness and mechanical strength, and it is difficult to solve the erosion of rain, wind and sand in harsh environments. The thermal shock performance is poor; the fracture toughness of GaAs is low, it is difficult to make a large size in the preparation process and the cost is high; due to the narrow band gap of Ge, the transmittance decreases significantly or devitrifies when the temperature exceeds 100 °C
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[0022] A method for preparing a long-wave infrared window material loaded with nano-carbon crystals, comprising the following steps:
[0023] 1) Use the ZnS substrate as the substrate, and clean the surface of the ZnS substrate. First soak it in 5% HF solution for 5-10 minutes to remove the surface oxide layer, then rinse the ZnS substrate with clean water for 3-5 minutes, and then Clean with deionized water, absolute ethanol, and acetone under ultrasonic conditions for 10 minutes, and finally dry the ZnS substrate with an ear cleaning ball;
[0024] 2) Soak the clean ZnS substrate obtained in step 1) in polyethyleneimine solution for 10-20 minutes, let it stand until saturated and then take it out (generally, it will reach saturation after soaking for 10 minutes, that is, a layer of uniform polyethyleneimine adsorption On the surface of the substrate), rinse 5-6 times with deionized water, and blow dry with nitrogen at room temperature to obtain soaked ZnS once; then place so...
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Abstract
The invention belongs to the technical field of infrared optical devices and particularly relates to a preparation method of a long-wave infrared window material loaded with a nano-carbon crystal. Analternatively layered self-assembling film-plating technology is adopted, an ultrasonic technology and an alternate layered self-assembling technology are combined, the coordination interaction between the nano-carbon crystal and macromolecules is utilized and a stable nano-carbon crystal film is formed by utilizing the binding force; particularly, the alternate self assembling of the ultrasonic technology is combined, and the comprehensive performance such as the hardness and the friction resistance of the window material can be remarkably improved.
Description
technical field [0001] The invention belongs to the technical field of infrared optical devices, and in particular relates to a preparation method of a long-wave infrared window material loaded with nano-carbon crystals. Background technique [0002] With the continuous development of military aviation technology, the infrared window of photoelectric system is more and more widely used in military aircraft. The infrared optical window of the airborne optoelectronic system needs to have excellent optical properties such as high infrared transmittance and low absorption coefficient, and must also have high mechanical strength, wear resistance, wind, sand and rain erosion resistance, and chemical corrosion resistance. At present, the long-wave infrared materials used in airborne optoelectronic systems mainly include ZnS, ZnSe, GaAs, Ge, etc. These materials are plated to form a protective film on the surface of the aircraft window to resist the influence of environmental facto...
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IPC IPC(8): C01B32/15
CPCC01B32/15
Inventor张建华文炯刘永奇郭留希杨晋中苏崇
OwnerZHENGZHOU ARTIFICIAL DIAMOND & PROD ENG TECH RES CENT