Preparation method of electromagnetic shielding composite material
A composite material and electromagnetic shielding technology, applied in the direction of magnetic/electric field shielding, electrical components, etc., can solve the problems of poor conductivity and poor electromagnetic shielding performance, and achieve the effect of good conductivity, no holes and defects, and good interface bonding
Inactive Publication Date: 2019-01-04
FOSHAN WANHE NEW ENERGY TECH CO LTD
View PDF5 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0007] Technical problem to be solved by the present invention: Aiming at the problems of poor conductivity and poor electromagnetic shielding performance of existing electromagnetic shielding materials, a preparation method of electromagnetic shielding composite materials is provided
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 moreExamples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0021] In parts by weight, weigh 40-50 parts of nitrile rubber, 5-12 parts of carbon black, 1-3 parts of accelerator CZ, 1-3 parts of accelerator TT, 2-4 parts of anti-aging agent D, 1-3 parts of 5 parts of sulfur, 10-16 parts of stearic acid, 10-14 parts of carbon fiber, mix nitrile rubber, carbon black, accelerator CZ, accelerator TT, anti-aging agent D, sulfur, stearic acid and carbon fiber at a temperature of Knead at 60-80°C for 15-20 minutes to obtain the kneaded material, pull it out at a roller distance of 2-4 mm to obtain a kneaded sample; take a pure aluminum sheet with a thickness of 0.3-0.5 mm and wash it with acetone and deionized water respectively. After ultrasonication for 15-20 minutes, a clean aluminum sheet is obtained, and the mixed sample is sandwiched between two clean aluminum sheets, and placed on a flat vulcanizing machine, and vulcanized at a temperature of 160-180 °C and a pressure of 10-15 MPa for 15-20 minutes. Obtain a composite aluminum sheet; ta...
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
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a preparation method of an electromagnetic shielding composite material, and belongs to the technical field of electromagnetic shielding materials. The electromagnetic shielding composite material with good conductivity and electromagnetic shielding properties is prepared by the aid of a 'magnetic conductive / magnetic non-conductive / magnetic conductive / magnetic non-conductive / magnetic conductive' shielding design structure, a middle magnetic conductive portion is a magnetic conductive sample prepared from nitrile rubber, carbon black and auxiliaries, a magnetic non-conductive portion is a pure aluminum sheet, the outermost non-conductive portion is a pure iron sheet, an obvious Fe-Al reaction layer is led between two pure iron matrixes to form a graded composite structure material with a Fe / Fe-Al alloy / Fe structure, a magnetic non-conductive iron aluminum reaction layer is formed in the middle by control, the electromagnetic shielding properties of the integratedstructure can be improved, a conductive / dielectric / conductive / dielectric / conductive layered structure can be formed, and electromagnetic waves can be reflected at a conductor / dielectric interface, sothat overall electromagnetic shielding properties are improved.
Description
technical field [0001] The invention relates to a preparation method of an electromagnetic shielding composite material, belonging to the technical field of electromagnetic shielding materials. Background technique [0002] With the rapid development of the electronic information industry, electrical and electronic equipment has been widely used in all walks of life. While they provide great convenience to people's lives, they also expose serious electromagnetic pollution problems. Relevant studies have confirmed that electromagnetic waves emitted by electronic and electrical equipment will not only interfere with the normal operation of other instruments and equipment, but may also lead to information leakage and even endanger human health. Electromagnetic pollution has become the fourth major public hazard that endangers human existence after noise pollution, air pollution and water pollution. [0003] Electromagnetic pollution is extremely harmful to human production and...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08K13/04C08K7/06C08K5/09C08K3/06C08K3/04C08K5/18H05K9/00B29C35/02
CPCB29C35/02C08K3/04C08K3/06C08K5/09C08K5/18C08K7/06C08K13/04C08L2201/04H05K9/0081C08L9/02
Inventor 裘友玖张鑫
Owner FOSHAN WANHE NEW ENERGY TECH CO LTD