Infrared stealth material taking leather as base material, and preparation method thereof

A technology of stealth materials and basic materials, which is applied in the field of preparation of materials with infrared stealth functions, to achieve the effects of shortening the preparation cycle, reducing the preparation cost, and reducing the infrared emissivity

Inactive Publication Date: 2020-06-16
SICHUAN UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation of this new type of infr

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
  • Infrared stealth material taking leather as base material, and preparation method thereof
  • Infrared stealth material taking leather as base material, and preparation method thereof
  • Infrared stealth material taking leather as base material, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Take cowhide leather with an area of ​​20×20 cm, apply 4 g (theoretical spraying amount is 10 mg / cm 2 ) of ferrite FeO X The powder is dispersed in 300 mL of acetone to configure solution A; the polyurethane adhesive with a solid content of 30% (the total solid content of the polyurethane adhesive and FeO X Mix the powder mass ratio of 0.6:1) with 150 mL of acetone to prepare solution B; after mixing solution A and solution B evenly, spray it on the surface of the taken cowhide leather at room temperature, and dry it to obtain infrared stealth. Leather Leather / FeO X . According to the test of Fourier transform infrared spectrometer, it can be known that Leather / FeO X Can reflect at least 80% of infrared waves with a wavelength of 8-14 μm (wavenumber 1250-714 cm -1 ),Such as figure 1 shown. It can be seen that the Leather / FeO X It has strong reflectivity to thermal infrared rays, thereby reducing heat absorption and reducing its own infrared radiation intensity. ...

Embodiment 2

[0049] Take cowhide leather with an area of ​​20×20 cm, spray 8 g (theoretical spraying amount is 20 mg / cm 2 ) silver-coated copper Cu@Ag powder was dispersed in 600 mL of acetone to configure solution A; a polyurethane adhesive with a solid content of 30% (the mass ratio of PU total solid content to Cu@Ag powder was 3:1) was mixed with 150 mL of acetone was mixed to prepare solution B; after mixing solution A and solution B evenly, it was sprayed on the surface of the obtained cowhide leather at room temperature, and dried to obtain leather Leather / Cu@Ag with infrared stealth properties. Tested by Fourier transform infrared spectrometer, it can be seen that ( image 3 ), Leather / FeO X For 8-14 μm (wavenumber 1250-714 cm -1 ) The infrared wave in the band has strong reflection, and the reflectivity is higher than 80%. It can be seen that Leather / Cu@Ag can reduce heat absorption and reduce its infrared radiation intensity by reflecting most of the thermal infrared rays. Pla...

Embodiment 3

[0051] Take cowhide leather with an area of ​​20×20 cm, apply 4 g (theoretical spraying amount is 10 mg / cm 2 ) bismuth oxide Bi 2 o 3 The powder was dispersed in 300 mL of acetone to configure solution A; a polyurethane adhesive with a solid content of 30% (total solid content of PU and Bi 2 o 3 Mix the powder mass ratio of 0.6:1) with 150 mL of acetone to prepare solution B; after mixing solution A and solution B evenly, spray it on the surface of the taken cowhide leather at room temperature, and dry it to obtain infrared stealth. Leather Leather / Bi 2 o 3 . Will Leather / Bi 2 o 3 Placed at 32 oC on the heat source (heating plate) ( Figure 5 a), Observation of Leather / Bi by infrared thermal imager 2 o 3 The thermal radiation temperature, such as Figure 5 As shown in b, Leather / Bi 2 o 3 The temperature is 16.1 o C, close to ambient temperature, therefore, Leather / Bi 2 o 3 It can completely shield the infrared radiation intensity of the heat source, so that th...

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

PropertyMeasurementUnit
Reflection loss valueaaaaaaaaaa
Login to view more

Abstract

The invention provides an infrared stealth leather material, which has low emissivity and controllable temperature under a normal-temperature infrared atmospheric window of 8-14 [mu]m, and is characterized in that natural leather prepared from livestock skin is used as a base material, and the surface of the base material is coated with a low-emissivity metal material, or after the natural leatheris dehydrated and added into a phase change material, the natural leather is coated with the low-emissivity metal material, so that the infrared stealth material which is low in emissivity, controllable in temperature, soft, foldable and wearable is prepared. The leather material with dual functions of infrared stealth and radar stealth can be prepared by regulating and controlling the metal variety and proportion of the coating.

Description

technical field [0001] The invention belongs to the research field of functional materials, and in particular relates to a method for preparing materials with infrared stealth functions by using leather as a base material. Background technique [0002] Infrared thermal imaging technology is one of the most important means of investigation in the military field at present. It mainly uses thermal radiation imaging of targets for investigation. It has the characteristics of excellent night detection performance, strong anti-interference ability, and adaptability to various complex combat environments. Based on the above reasons, there is an urgent need to develop infrared stealth materials to improve the battlefield survivability and penetration capabilities of weapons and combat soldiers. [0003] According to the Stefan-Boltzmann law M = σεT 4 It can be seen that the infrared radiation intensity M of an object is jointly determined by the target temperature T and the infrare...

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): C14C9/00C14C11/00C14C3/06C09D175/04C09D5/30
CPCC14C9/00C14C11/00C14C3/06C14C11/003C09D175/04C09D5/30C08K2003/2265C08K2003/0806C08K2003/085C08K2003/2296C08K3/22C08K9/10C08K3/08
Inventor 黄鑫王晓玲廖学品石碧
Owner SICHUAN UNIV
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