Laser infrared multiband compatible stealth film made of non-metallic material and preparation method thereof

A non-metallic material and multi-band technology, applied in the field of laser infrared multi-band compatible stealth film and its preparation, can solve the problems of weak radiation, affecting the heat dissipation of the target, affecting the normal operation of the target, etc., achieving thin thickness, improving survival probability, and easy The effect of large-scale production and application

Pending Publication Date: 2021-02-12
NAT UNIV OF DEFENSE TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, low emissivity means that the radiation emitted is weak, which will affect the heat dissipation of the target itself, and may seriously affect the normal operation of the target. Therefore, to achieve good stealth, the problems of stealth and heat dissipation must be so

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Laser infrared multiband compatible stealth film made of non-metallic material and preparation method thereof
  • Laser infrared multiband compatible stealth film made of non-metallic material and preparation method thereof
  • Laser infrared multiband compatible stealth film made of non-metallic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be further described below in conjunction with specific embodiment:

[0020] refer to figure 1 The laser infrared multi-band compatible stealth film of non-metallic materials shown is a multi-layer film structure, the substrate is made of PI film, and calcium fluoride (CaF2) material film layers and tellurium (Te) material films are alternately stacked on the substrate layer (13 layers in total), the 1st and 13th layers are calcium fluoride layers, the thickness of each film layer from inside to outside is as follows: 910nm, 704nm, 211nm, 293nm, 63nm, 1032nm, 574nm, 50nm, 1326nm, 153nm, 429nm, 118nm, 983nm.

[0021] This embodiment is prepared by electron beam evaporation coating method, and the process parameters of preparation: the background vacuum degree is 5.0×10 - 3 Pa, the deposition rate of tellurium (Te) is 0.9nm / s, the deposition rate of calcium fluoride (CaF2) is 0.8nm / s, and the substrate temperature is 120°C.

[0022] figure...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a laser infrared multiband compatible stealth film made of a non-metallic material and a preparation method of the laser infrared multiband compatible stealth film; the laserinfrared multiband compatible stealth film is of a multilayer film structure, and the multilayer film structure comprises a substrate, and calcium fluoride layers and tellurium layers which are sequentially and alternately stacked on the substrate from inside to outside; the refractive index of the calcium fluoride layer is 1.06-1.46, and the refractive index of the tellurium layer is 2.3-6.2; thefilm adopts a non-metal material to realize compatible stealth of middle and far infrared bands (3-5microns and 8-14microns) and laser wavelengths (1.064microns and 10.6microns), has relatively strong heat dissipation capability in a non-detection band (5-8microns), and does not contain a metal material, so that radar wave attenuation is very weak, and compatible stealth with a radar wave-absorbing material is easy to realize; if applied to military equipment, the film has important significance in protecting important military targets of our army and improving the survival probability of weaponry.

Description

technical field [0001] The invention relates to the technical field of military stealth, in particular to a non-metallic laser infrared multi-band compatible stealth film and a preparation method thereof. Background technique [0002] In modern warfare, the wide application of multi-band photoelectric reconnaissance and precision-guided weapons poses a huge threat to the survival of military targets; stealth, as an important countermeasure, aims to reduce the radiation contrast between the target and the background or weaken the echo Signal; resulting in infrared stealth, laser stealth, radar stealth and other military requirements. [0003] In order to achieve a good multi-band stealth effect, stealth materials are required to have low emissivity (high reflectivity) in the mid-to-far infrared detection band (3-5μm and 8-14μm), and at the working wavelength of laser ranging or laser target designator (1.064μm and 10.6μm) have low reflectivity. For opaque materials, low emis...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G02B5/08G02B1/115C23C14/30C23C14/06
CPCG02B5/0816G02B1/115C23C14/30C23C14/0694C23C14/06Y02P70/50
Inventor 赵大鹏汪家春程立陈宗胜李志刚吕相银陈蕾蕾时家明
Owner NAT UNIV OF DEFENSE TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap