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Manufacturing method of electromagnetic wave shielding composite material using copper and nickel plated carbon fiber produced by continuous process of electrolysis and electrolysis, and electromagnetic wave shielding composite material

A technology of composite materials and electromagnetic waves, applied in the fields of magnetic/electric field shielding, circuits, applications, etc., can solve problems such as harsh plating methods, high productivity, high production prices, and difficulty in practical application

Active Publication Date: 2019-04-16
BULLSONE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The metal substrate is not conducive to processing complex patterns and has the disadvantage of being heavy
Moreover, the method of plating in the substrate is not conducive to productivity due to complicated processes such as degreasing, etching, neutralization, activation, accelerator, metal evaporation, activation, and plating 1-3 times
In addition, it is reported that there are shielding materials using fillers such as carbon nanotubes, metal powders, graphite, ferrite, etc., but they have disadvantages in terms of dispersibility, processability, electromagnetic wave shielding efficiency, etc.
In order to overcome this disadvantage, it is suitable to apply metal plating to the filler material, but currently, due to the harshness of the plating method of this conductive powder, the productivity and production cost are high, so it is difficult to put it into practical use.

Method used

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  • Manufacturing method of electromagnetic wave shielding composite material using copper and nickel plated carbon fiber produced by continuous process of electrolysis and electrolysis, and electromagnetic wave shielding composite material
  • Manufacturing method of electromagnetic wave shielding composite material using copper and nickel plated carbon fiber produced by continuous process of electrolysis and electrolysis, and electromagnetic wave shielding composite material
  • Manufacturing method of electromagnetic wave shielding composite material using copper and nickel plated carbon fiber produced by continuous process of electrolysis and electrolysis, and electromagnetic wave shielding composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0143] Example 1: Preparation and Evaluation of Electromagnetic Wave Shielding Sheet by Injection Molding

[0144] The content of each of the above components shown in Table 1 below was molded. The injection molded articles were each prepared in the form of a sheet having a thickness of 0.7 mm. Specifically, thermoplastic resin polypropylene (grade BJ 700 of Samsung Total Company, melt index of 25, density of 0.91 g / cm 3 , heat distortion temperature is 105 ℃,), polycarbonate (grade LUPOY of LG Chemical, polycarbonate 1201-22, melt index is 22, density is 1.2g / cm 3 , heat distortion temperature of 147°C) and acrylonitrile-butadiene-styrene resin (grade ABS XR401 from LG Chem, with a melt index of 9 and a density of 1.05g / cm 3 , heat distortion temperature of 105 ℃) drying for 6 hours. Afterwards, the contents of Table 1 below were mixed with the dried thermoplastic resin. Next, the above mixture was put into an injection molding machine (twin injection machine, produced by...

Embodiment 2

[0149] Example 2: Preparation and Evaluation of Molded Articles Through Injection Molding Process and Extrusion Process

[0150] According to the ingredients in Table 2 and Table 3 below, moldings were prepared through the injection molding process and the extrusion process, respectively, and the electromagnetic wave shielding performance test was carried out. In a vacuum oven at a temperature of 80°C, polypropylene (grade BJ 700, with a melt index of 25 and a density of 0.91g / cm 3 , heat distortion temperature of 105°C, Samsung Total) dried for 6 hours, and the dried polypropylene was mixed with polypropylene and carbon fiber (6mm) plated with copper and nickel in the following Table 2, respectively, to prepare The injection molded products of the following Table 2 are listed. And, the above mixture was injection-molded into an injection molded product having a size specified by ASTM D4935 under the same conditions as in Example 1 to prepare a sheet.

[0151] Table 2

[01...

Embodiment 3

[0158] Example 3: Preparation and evaluation of molded articles using thermosetting resins

[0159] In Table 4, highly conductive carbon fibers coated with Cu and Ni were impregnated with polyurethane resin and epoxy resin as representative resins of thermosetting resins to prepare sheets, and the electromagnetic wave shielding performance was measured.

[0160] Quantitative polyurethane PU (grade UP395, viscosity of 1500cps, specific gravity of 1, one-component urethane, Korea, Kokudo Chemical) and carbon fiber (6mm short) plated with copper and nickel in a beaker with a weight ratio of 80:20 After cutting), in a mixer, mixed at 1000rpm speed for 1 minute to prepare a mixed solution. Put 20g of the prepared mixed solution on the release treatment (spray an appropriate amount of WD-40 from 3M Company on a glass plate with a thickness of 5mm, rub it evenly with the cloth of the surface material, and then place it in an oven at a temperature of 70°C. Keep it in the medium for 3...

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Abstract

The invention relates to a preparation method of an electromagnetic wave shielding composite material and an electromagnetic wave shielding composite material prepared by the above preparation method of the electromagnetic wave shielding composite material. The present invention can provide electromagnetic wave shielding composite materials. The above-mentioned electromagnetic wave shielding composite materials utilize high-conductivity carbon fibers prepared through continuous processes of non-electrolysis and electrolysis, so that the conductivity is outstanding and the surface resistance is low, so that it is suitable for shielding of electromagnetic interference (EMI) and has high productivity. And economical outstanding. In addition, the electromagnetic wave shielding composite material of the present invention can be inserted into a mobile phone case or a mobile phone bag to block electromagnetic waves, and can also be applied to a bracket for protecting a liquid crystal display (LCD) of a portable display product.

Description

technical field [0001] This patent application claims priority to Korean Patent Application No. 10-2013-0062962 filed with the Korean Patent Office on May 31, 2013 and Korean Patent Application No. 10-2013-0159979 filed to the Korean Patent Office on December 20, 2013 , the disclosures of the above-mentioned patent applications are incorporated herein by reference. [0002] The invention relates to a method for preparing an electromagnetic wave shielding composite material using carbon fibers plated with copper and nickel prepared through continuous processes of non-electrolysis and electrolysis, and the electromagnetic wave shielding composite material. Background technique [0003] In the 21st century, with the rapid development of computers and electronic information industries, and the emergence of automobiles and high-speed trains equipped with cutting-edge electronic equipment, electromagnetic waves generated in various electronic products have an impact on electronic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K9/00B29C67/24
CPCH01Q1/526H01Q17/004C08K3/22C08K7/06C08K2201/001C08K2201/004C08K3/041B29C70/882C08K9/02B29K2105/162B29K2507/04B29L2031/3481B29C67/24B29C45/00B29B11/16C08L69/00
Inventor 李钟吉许秀炯朴旼英姜秉録姜智勳
Owner BULLSONE MATERIAL