Conductive adhesive tape

An adhesive tape, conductive technology, applied in the direction of conductive adhesives, adhesive types, ester copolymer adhesives, etc., can solve the problem of inability to ensure electrical conductivity, unsatisfactory corrosion resistance, resistance increase, etc. problem, to achieve the effect of excellent long-term corrosion resistance, stable electrical conductivity, and excellent corrosion resistance

Active Publication Date: 2012-10-10
NITTO DENKO CORP
View PDF10 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When corrosion of such a metal adherend or metal foil progresses, resistance (interface resistance between the adhesive layer of the conductive adhesive tape and the adherend or metal foil) increases, and stable electrical conductivity cannot be ensured. (conductivity) problem
[0004] Therefore, for the above-mentioned conductive adhesive tape, the current situation is that a conductive adhesive tape that satisfies the corrosion resistance (hereinafter, sometimes simply referred to as "corrosion resistance") to metals (especially metal adherends) has not yet been obtained. Belt

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
  • Conductive adhesive tape
  • Conductive adhesive tape
  • Conductive adhesive tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0107] Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples. In addition, the conductive adhesive tapes obtained in Examples 1 to 4 described later have the same characteristics as the above-mentioned "conductive adhesive tape T 1 (First specific embodiment)" The same configuration. In addition, the conductive adhesive tape obtained in Examples 5 to 8 has the same structure as the above-mentioned "conductive adhesive tape T 2 (Second specific method) "The same composition.

manufacture example

[0109] 100 parts by weight of a monomer mixture composed of 70 parts by weight of 2-ethylhexyl acrylate (2EHA), 30 parts by weight of n-butyl acrylate (BA), and 3 parts by weight of acrylic acid (AA), as a polymerization initiator 0.2 parts by weight of 2,2'-azobisisobutyronitrile (AIBN) and 186 parts by weight of ethyl acetate as a polymerization solvent were put into a separable flask, and stirred for 1 hour while blowing in nitrogen. Thus, the oxygen in the polymerization system was removed, and the temperature was raised to 63°C to react for 10 hours, and then toluene was added to adjust the concentration to obtain an acrylic polymer solution with a solid content of 30% by weight (sometimes referred to as "acrylic polymer solution A" ). The weight average molecular weight of the acrylic polymer (sometimes referred to as “acrylic polymer A”) in the acrylic polymer solution A was 520,000.

[0110] Production example of acrylic polymer B

[0111] Except that the monomer mixture ...

Embodiment 1

[0121] In the acrylic polymer solution A, with respect to 100 parts by weight of the acrylic polymer A, 2 parts by weight of "Coloret L" (manufactured by Nippon Polyurethane Industry Co., Ltd., isocyanate crosslinking agent) as a crosslinking agent is added And mixing, thereby preparing an adhesive composition solution. In addition, the compounding amount (addition amount) of Corolet L is expressed in terms of the addition amount (parts by weight) in terms of solid content, and the same applies to the following description.

[0122] The adhesive composition obtained above was applied to a release paper (separator) with a thickness of 163 μm (manufactured by Oji Paper Co., Ltd., "110EPS(P) ブル一") so that the thickness after drying became 40 μm. It was heated and dried at 120°C under pressure for 5 minutes to form an adhesive layer. Then, a toughened copper foil (tuffet copper foil) with a thickness of 35 μm was stuck on the surface of the adhesive layer, and aged at 40°C for one d...

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
electrical resistanceaaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to view more

Abstract

Provided is a conductive adhesive tape which has excellent corrosion resistance and is capable of maintaining long-term stable electrical conductivity. The conductive adhesive tape has at least one acrylic adhesive layer, volume resistance of 1 x 10<1> omega, and the total amount of acrylic acid ions and methacrylic acid ions extracted from the adhesive tape using pure water under conditions of 100 DEG C for 45 minutes, as measured by ion chromatography, is 20 ng / cm2 or less per unit surface area of the acrylic adhesive layer.

Description

Technical field [0001] The present invention relates to a conductive adhesive tape. More specifically, the present invention relates to a conductive adhesive tape used for applications such as electrical conduction between two locations. Background technique [0002] The conductive adhesive tape has electrical conductivity (especially electrical conductivity in the thickness direction) and is used for electrical conduction between two spaced parts, electromagnetic wave shielding, and the like. As such a conductive adhesive tape, conventionally known, for example, it comprises a metal foil and an adhesive layer (pressure-sensitive adhesive layer) provided on one side of the metal foil, on the adhesive layer covering side of the metal foil. A conductive adhesive tape (for example, refer to Patent Documents 1 to 3) that penetrates the adhesive layer and has a conductive portion of a terminal at its tip, and a metal foil made of nickel powder or the like A conductive adhesive tape ...

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 Applications(China)
IPC IPC(8): C09J7/02C09J9/02C09J11/04C09J133/00C09J7/28
CPCC09J133/08C08K5/3412C09J7/0292C09J7/0246C09J2201/602C09J2400/163C09J2433/00C09J9/02C09J2203/326C09J7/38C09J7/22C09J7/28Y10T428/273Y10T428/27C09J2301/206C09J2301/314
Inventor 武藏岛康玉井弘宣大学纪二
Owner NITTO DENKO CORP
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