Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Rare earth based composite electromagnetic wave absorption material and preparation method thereof

A technology of composite electromagnetic and wave-absorbing materials, which is applied in the field of electronic materials to achieve the effects of high wave-absorbing efficiency, broad market prospects and good frequency bandwidth characteristics

Inactive Publication Date: 2016-12-07
潘明华
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above absorbing materials have certain electromagnetic absorbing properties, there are still some shortcomings in many practical applications that require wider absorption bandwidth, higher absorbing efficiency, and good environmental stability.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A rare earth-based composite electromagnetic wave-absorbing material, prepared from the following raw materials in parts by weight: 30 parts of methylphenyl vinyl silicone rubber, 10 parts of chlorinated polyethylene, 5 parts of tourmaline powder, 2 parts of volcanic ash, and nanometer gadolinium oxide 4 parts, 2 parts of praseodymium and neodymium oxide, 0.5 parts of ytterbium chloride, 5 parts of triethyl citrate, 4 parts of 5-hydroxymethylfurfural, 2 parts of γ-aminopropyl triethoxysilane, 3 parts of ortho-pyrophosphoric acid 1 part of nanoporous silica, 3 parts of nanoacicular zinc oxide, 2 parts of white carbon black, 2 parts of N,N'-methylenebisacrylamide, 3 parts of polyacrylonitrile-based carbon fiber, styrene-mass 5 parts of anhydride copolymer, 1 part of ethylene-propylene copolymer, 4 parts of dioctyl phthalate, 1 part of chlorinated fatty acid methyl ester, 5 parts of polyethylene-terminated epoxy wax, 25 parts of acetone;

[0027] The mass ratio of praseody...

Embodiment 2

[0036] A rare earth-based composite electromagnetic wave-absorbing material, prepared from the following raw materials in parts by weight: 45 parts of methylphenyl vinyl silicone rubber, 20 parts of chlorinated polyethylene, 12 parts of tourmaline powder, 8 parts of volcanic ash, and nanometer gadolinium oxide 10 parts, 8 parts of praseodymium and neodymium oxide, 3 parts of ytterbium chloride, 11 parts of triethyl citrate, 9 parts of 5-hydroxymethylfurfural, 7 parts of γ-aminopropyl triethoxysilane, 8 parts of orthophosphoric acid 6 parts, nano-porous silica 6 parts, nano-acicular zinc oxide 9 parts, white carbon black 6 parts, N,N'-methylenebisacrylamide 7 parts, polyacrylonitrile-based carbon fiber 6 parts, styrene-mass 9 parts of anhydride copolymer, 5 parts of ethylene-propylene copolymer, 9 parts of dioctyl phthalate, 4 parts of chlorinated fatty acid methyl ester, 9 parts of polyethylene-terminated epoxy wax, 40 parts of acetone;

[0037] The mass ratio of praseodymium ...

Embodiment 3

[0046] A rare earth-based composite electromagnetic wave-absorbing material, prepared from the following raw materials in parts by weight: 38 parts of methylphenyl vinyl silicone rubber, 15 parts of chlorinated polyethylene, 8 parts of tourmaline powder, 5 parts of volcanic ash, and nanometer gadolinium oxide 7 parts, 5 parts of praseodymium and neodymium oxide, 1.8 parts of ytterbium chloride, 8 parts of triethyl citrate, 6 parts of 5-hydroxymethylfurfural, 4.5 parts of γ-aminopropyl triethoxysilane, 5.5 parts of ortho-pyrophosphoric acid 3.5 parts of nanoporous silica, 6 parts of nanoacicular zinc oxide, 4 parts of white carbon black, 4.5 parts of N,N'-methylenebisacrylamide, 4.5 parts of polyacrylonitrile-based carbon fiber, styrene-mass 7 parts of anhydride copolymer, 3 parts of ethylene-propylene copolymer, 6.5 parts of dioctyl phthalate, 2.5 parts of chlorinated fatty acid methyl ester, 7 parts of polyethylene-terminated epoxy wax, and 32 parts of acetone;

[0047] The m...

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
Lengthaaaaaaaaaa
Minimum reflectivityaaaaaaaaaa
Effective absorption bandwidthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a rare earth based composite electromagnetic wave absorption material and a preparation method thereof. The rare earth based composite electromagnetic wave absorption material prepared from materials including methyl phenyl vinyl silicone rubber, chlorinated polyethylene, tourmaline powder, volcanic ash, nano-gadolinium oxide, praseodymium neodymium oxide, ytterbium chloride, triethyl citrate, 5-hydroxymethylfurfural, gamma-aminopropyltriethoxysilane, 3-8 parts of positive pyrophosphoric acid, nanoporous silica, nano-sized needle-shape zinc oxide, white carbon black, N,N'-methylene bisacrylamide, polyacrylonitrile-based carbon fiber, a styrene-maleic anhydride copolymer, an ethylene-propylene polymer, dioctyl phthalate, chlorinated fatty acid methyl ester, polyethylene wax base epoxy and acetone. The rare earth based composite electromagnetic wave absorption material is high in wave absorption, wave absorption performance is also displayed in low frequency, good bandwidth characteristics and wave absorption performance are achieved, and the material is broad in market prospect.

Description

technical field [0001] The invention belongs to the technical field of electronic materials, and in particular relates to a rare earth-based composite electromagnetic wave-absorbing material and a preparation method thereof. Background technique [0002] The absorbing material refers to the energy that can absorb and attenuate the incident electromagnetic wave. It can directly absorb the electromagnetic wave without generating eddy currents, does not reflect electromagnetic waves, and does not cause secondary pollution to the surrounding electronic components. A new type of functional material that rapidly converts electromagnetic energy into heat or other forms of energy. With the frequent use of various electronic devices, electromagnetic radiation and electromagnetic pollution are becoming more and more serious. The research and development of electromagnetic absorbing materials has attracted more and more attention, and new types of absorbing materials have emerged in a...

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): C08L83/07C08L23/28C08L23/08C08L35/06C08K13/04C08K7/06C08K3/22C08K3/16C08K5/11C08K5/544C08K3/36
CPCC08L83/04C08K2201/014C08L2201/08C08L2205/02C08L2205/035C08L23/286C08L23/0815C08L35/06C08K13/04C08K7/06C08K2003/221C08K3/16C08K5/11C08K5/544C08K3/36
Inventor 潘明华
Owner 潘明华
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com