Composite wave-absorbing material for wave-absorbing shielding film and wave-absorbing shielding film applied thereto

A technology of composite wave-absorbing materials and shielding films, applied in radiation-absorbing coatings, magnetic field/electric field shielding, coatings, etc., can solve the problems of few types of components, difficulties, and dispersion of graphene powder addition, and achieve a wide range of components Less, solve technical problems, simple process effect

Active Publication Date: 2020-11-03
SUZHOU RIDEA MATERIAL TECH
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a composite wave-absorbing material for a wave-absorbing shielding film and the wave-absorbing shielding film used therefor, by proposing graphene resin composite powder as an additional raw material for the wave-absorbing material, and using water as the The solvent not only solves the technical problem of adding and dispersing graphene powder, but also requires fewer components and does not need to add any organic solvents. It has the advantages of simple process and environmental protection

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
  • Composite wave-absorbing material for wave-absorbing shielding film and wave-absorbing shielding film applied thereto
  • Composite wave-absorbing material for wave-absorbing shielding film and wave-absorbing shielding film applied thereto
  • Composite wave-absorbing material for wave-absorbing shielding film and wave-absorbing shielding film applied thereto

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] Preferably, in this embodiment, the graphene resin composite powder includes graphene and a thermoplastic resin, part or all of the surface of the graphene is coated with a thermoplastic resin, and the thermoplastic resin is polypropylene resin; preferably, please refer to figure 1 Shown, the preparation method of graphene resin composite powder comprises the following steps:

[0031] S10), first melting the thermoplastic resin to obtain a resin melt;

[0032] S20), then adding the graphene into the resin melt under stirring condition, and then cooling and pulverizing to obtain the graphene resin composite powder.

[0033] Preferably, in this embodiment, the particle size distribution D50 range of graphene is 1-20 microns; the particle size distribution D50 range of graphene resin composite powder is 25-50 microns; the mass fraction range of graphene is 1-10 parts, the range of parts by mass of the thermoplastic resin is 90-99 parts.

[0034] Preferably, this embodime...

Embodiment 1

[0036] Example 1: A composite wave-absorbing material for a wave-absorbing shielding film, including a wave-absorbing mixed liquid, which is coated on a carrier film layer and cured, and the wave-absorbing mixed liquid includes uniformly mixed wave-absorbing powder And water for configuring the wave-absorbing powder into a wave-absorbing mixed solution, the wave-absorbing powder accounts for 70% of the solvent concentration, wherein the wave-absorbing powder includes the following raw materials in parts by weight:

[0037] 65 parts of carbonyl iron powder;

[0038] 25 parts of graphene resin composite powder; Wherein, the preparation method of graphene resin composite powder comprises the following steps:

[0039] S10), first melting the polypropylene resin to obtain a resin melt;

[0040]S20), then graphene is added in the resin melt under stirring condition, obtain graphene resin composite powder after cooling, pulverizing again, through particle size distribution instrumen...

Embodiment 2

[0044] Embodiment 2: The remaining technical solutions of this embodiment 2 are the same as those of embodiment 1, the difference is that, in this embodiment 2, the wave-absorbing powder includes the following raw materials in parts by weight:

[0045]

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
acid valueaaaaaaaaaa
acid valueaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a composite wave-absorbing material of a wave-absorbing shielding film. The composite wave-absorbing material comprises a wave-absorbing mixed liquid. The wave-absorbing mixedliquid coats a carrier film layer and is cured. The wave-absorbing mixed liquid includes a wave-absorbing powder and a solvent that are uniformly mixed. The concentration of the wave-absorbing powderin the solvent is not less than 60%. The wave-absorbing powder includes: 50 to 70 parts of carbonyl iron powder; 10 to 30 parts of graphene resin composite powder; 5 to 15 parts of water-soluble acrylic resin; and 5 to 15 parts of water-soluble polyester resin. The solvent is water. The water-soluble acrylic resin and the water-soluble polyester resin can undergo a cross-linking curing reaction. The invention also relates to a wave-absorbing shielding film using the composite wave-absorbing material. The scheme of using the graphene resin composite powder as the raw material of the wave-absorbing material and using the water as the solvent not only solves the difficulty in adding and dispersing the graphene powder, but also requires few types of components and does not need to add any organic solvent, and is simple in process and friendly to environment.

Description

technical field [0001] The invention belongs to the field of electronic shielding films, and in particular relates to a composite wave-absorbing material of the wave-absorbing shielding film, and also relates to a wave-absorbing shielding film applied to the composite wave-absorbing material. Background technique [0002] With the rapid development of the modern electronics industry, the number of various wireless communication systems and high-frequency electrical devices has increased dramatically, leading to more and more problems such as electromagnetic interference and electromagnetic pollution. In order to solve the problems of electromagnetic interference and electromagnetic pollution, it is proposed to use electromagnetic shielding film to realize the function of electromagnetic shielding. Its main working principle is to use various shielding materials to effectively block and consume electromagnetic radiation. [0003] Specifically, the wave-absorbing shielding fil...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H05K9/00C09D5/32C09D123/12
CPCC08L2205/03C09D5/32C09D123/12H05K9/0081C08L33/04C08L67/00C08K3/18C08K3/042
Inventor 刘付胜聪周作成
Owner SUZHOU RIDEA MATERIAL 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