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Preparation method of conductive coating layer for super-thin coaxial cable

A conductive coating and ultra-fine coaxial technology, which is applied in the direction of conductive coating, coating, and surface coating liquid devices, etc., can solve the problem that the signal cannot be completely shielded, and it is not suitable for mass production and preparation of ultra-thin coaxial cables. Process requirements and high cost issues, to achieve the effect of outstanding signal shielding ability, strong adhesion ability, and reasonable process arrangement

Inactive Publication Date: 2014-06-25
SUZHOU KEMAO ELECTRONICS MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the structural characteristics of the mesh shield, there are gaps between the intertwined metal wires, which cannot completely shield the signal
In the current technology, people usually wrap a layer of single-sided composite copper foil with a thickness of several microns on the outside of the mesh shield. This structure can effectively improve the shielding ability of signals, but the preparation process of single-sided composite copper foil requires and High cost, not suitable for mass production of ultra-thin coaxial cables

Method used

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  • Preparation method of conductive coating layer for super-thin coaxial cable

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Embodiment 1

[0019] The specific preparation process of the conductive paint layer for the superfine coaxial cable mentioned in the present invention is as follows:

[0020] a) Prepare a film-forming resin, the film-forming resin is a thermoplastic acrylic resin, the raw material is methyl methacrylate monomer, the initiator is azobisisobutyronitrile, and the solvent is toluene. The mass-to-number ratio of the three is about 60: 220:1; the preparation process is as follows: first, pour 60 parts of monomer methyl methacrylate and 40 parts of toluene into the mixing tank, pass nitrogen during the stirring process, and the stirring time is about 1 hour; then, add the initiator dropwise Azobisisobutyronitrile was stirred at 110°C for 2 hours; finally, the temperature of the mixing tank was lowered to 55°C, and 180 parts of toluene was added for dilution to obtain a film-forming resin;

[0021] b) Pretreatment of copper powder, the average particle size of copper powder is about 80-90um, and th...

Embodiment 2

[0027] The specific preparation process of the conductive paint layer for the superfine coaxial cable mentioned in the present invention is as follows:

[0028] a) Prepare a film-forming resin, the film-forming resin is a thermoplastic acrylic resin, the raw material is methyl methacrylate monomer, the initiator is azobisisobutyronitrile, and the solvent is toluene. The mass-number ratio of the three is about 50: 200:1; the preparation process is as follows: first, pour 50 parts of monomeric methyl methacrylate and 30 parts of toluene into the mixing tank, pass nitrogen during the stirring process, and the stirring time is about 1 hour; then, add the initiator dropwise Azobisisobutyronitrile was stirred at 100°C for 2 hours; finally, the temperature of the mixing tank was lowered to 50°C, and 170 parts of toluene was added for dilution to obtain a film-forming resin;

[0029] b) Pretreatment of copper powder, the average particle size of copper powder is about 80-90um, and the...

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Abstract

The invention discloses a preparation method of a conductive coating layer for a super-thin coaxial cable. The preparation method comprises the steps of a) preparing film-forming resin; b) pretreating copper powder; c) mixing; d) spraying; e) carrying out after-treatment. The invention discloses the preparation method of the conductive coating layer for the super-thin coaxial cable. The preparation method is reasonable in step arrangement, scientific and efficient in implementation process and moderate in cost; the conductive coating layer formed on the outer surface of a shielding layer by virtue of a spraying process has the advantages of high strength, excellent adhesive ability, outstanding signal shielding capability and the like, the usability of the super-thin coaxial cable is tremendously improved, and the preparation method is suitable for batch production of the super-thin coaxial cables.

Description

technical field [0001] The invention relates to a method for preparing a conductive coating for an ultra-thin coaxial cable, in particular to a method for preparing a conductive coating for an ultra-thin coaxial cable with reasonable composition, moderate cost, scientific preparation process, and outstanding radio shielding ability. Ultra-thin coaxial cable technical field. Background technique [0002] In recent years, with the continuous acceleration of the miniaturization development trend of consumer electronics represented by mobile phones and notebook computers, as well as communication, medical, and military electronic products, the performance requirements continue to increase. Ribbon cables that transmit various frequency signals in these products Traditional wiring components such as flexible circuit boards are quickly replaced by ultra-thin coaxial cables with higher transmission rates, wider frequency bands, and strong resistance to electromagnetic interference. ...

Claims

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Application Information

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IPC IPC(8): C09D133/12C09D7/12C09D5/24B05D3/02B05D7/24B05D5/12
Inventor 邹黎清
Owner SUZHOU KEMAO ELECTRONICS MATERIALS TECH
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