Stretchable and removable conductive adhesive layer, conductive double-sided adhesive tape and manufacturing method of conductive double-sided adhesive tape

A technology of double-sided tape and conductive adhesive, used in conductive adhesives, adhesives, film/sheet adhesives, etc., can solve problems such as increasing the cost of materials used, increasing the complexity of structural design, and improving performance. , The effect of easy removal of adhesive strength and excellent electrical conductivity

Pending Publication Date: 2019-12-31
安徽屹珹新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in the structural design of electronic products, conductive materials such as conductive foam are introduced to achieve conduction with the metal casing, and at the same time, strong, reliable and reworkable bonding is achieved by introducing easy-to-pull glue. Although long-term bonding and The purpose of eliminating static electricity, but increases the complexity of structural design and increases the cost of materials used

Method used

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  • Stretchable and removable conductive adhesive layer, conductive double-sided adhesive tape and manufacturing method of conductive double-sided adhesive tape
  • Stretchable and removable conductive adhesive layer, conductive double-sided adhesive tape and manufacturing method of conductive double-sided adhesive tape
  • Stretchable and removable conductive adhesive layer, conductive double-sided adhesive tape and manufacturing method of conductive double-sided adhesive tape

Examples

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Effect test

preparation example Construction

[0042] In the preparation method provided by the present invention, the conductive adhesive layer is first arranged on one side of the release film, and the specific steps preferably include:

[0043] Combine 40-60 parts by mass of thermoplastic elastomer, 40-60 parts by mass of tackifying resin, 10-20 parts by mass of softener, 0.5-5 parts by mass of antioxidant, and 10-40 parts by mass of conductive filler in a solvent Mixing to obtain a conductive adhesive liquid; then, the conductive adhesive liquid is coated on one side of the release film and dried to form a conductive adhesive layer.

[0044] In the preparation method provided by the present invention, after the conductive adhesive layer is provided on one side of the release film, a layer of release film is coated on the surface of the conductive adhesive layer to obtain a stretchable transfer film. Conductive double-sided tape without a substrate; or, respectively, a release film provided with the conductive adhesive layer...

Embodiment 1

[0053] This embodiment provides a substrate-free double-sided adhesive tape, which includes an adhesive layer with a thickness of 150 μm and a light release film and a heavy release film located on and below the adhesive layer. Among them, the ratio of the release force of the light and heavy release films is 1:3. The preparation of the adhesive layer consists of the following parts by mass: 45 parts of styrene-butadiene-styrene block copolymer (SBS, Kraton D1152), 40 parts of terpene resin (Yasuhara Chemical, PX1250), 20 parts of naphthenic oil, 2 parts of antioxidant (BASF 1076), 10 parts of conductive carbon fiber (diameter 70μm, length 200-300μm).

[0054] The preparation method of the above-mentioned baseless double-sided adhesive tape includes the following steps:

[0055] 1) Prepare 120 parts by mass of toluene, and then add 40 parts by mass of styrene-butadiene-styrene block copolymer (SBS) to dissolve;

[0056] 2) Add 40 parts by mass of terpene resin, 20 parts by mass of ...

Embodiment 2

[0059] This embodiment provides a substrate-free double-sided adhesive tape, which includes an adhesive layer with a thickness of 200 μm and a light release film and a heavy release film located on and under the adhesive layer. Among them, the ratio of the release force of the light and heavy release films is 1:2.5. The preparation of the adhesive layer consists of the following parts by mass: 50 parts of styrene-isoprene-styrene block copolymer (SIS, Kraton D1114), 45 parts of terpene phenol resin (Keteng, TP2040) , 20 parts of aromatic oil, 3 parts of antioxidant (BASF 1076), 20 parts of nickel-coated carbon powder (particle size 70-80 mesh).

[0060] The preparation method of the above-mentioned baseless double-sided adhesive tape includes the following steps:

[0061] 1) Prepare 140 parts by mass of xylene, and then add 50 parts by mass of styrene-isoprene-styrene block copolymer (SIS) to dissolve;

[0062] 2) Add 40 parts by mass of terpene phenol resin, 20 parts by mass of ar...

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Abstract

The invention relates to the technical field of adhesive tape production, and in particular, relates to a stretchable and removable conductive adhesive layer, a conductive double-sided adhesive tape and a manufacturing method of the conductive double-sided adhesive tape. The double-sided adhesive tape provided by the invention comprises a conductive adhesive layer and release films which are respectively adhered to two sides of the adhesive layer, or the double-sided adhesive tape comprises a conductive base material layer, conductive adhesive layers attached to two sides of the conductive base material layer respectively, and release films attached to the surfaces of the adhesive layers on two sides respectively; the conductive adhesive layers include 40-60 parts by mass of a thermoplastic elastomer, 40-60 parts by mass of tackifying resin, 10-20 parts by mass of a softener, 0.5-5 parts by mass of an antioxidant, and 10-40 parts by mass of a conductive filler. The double-sided adhesive tape provided by the invention integrates excellent conductivity, firm and reliable bonding performance and no-residual adhesive removal performance, and can realize compactness, lightness and thinness of electronic products with simpler structural design and lower use material cost.

Description

Technical field [0001] The present invention relates to the technical field of tape production, in particular to a method for manufacturing a stretchable and removable conductive adhesive layer, a conductive double-sided tape, and a conductive double-sided tape. Background technique [0002] Easy-pull adhesive refers to a double-sided adhesive tape that can be removed by stretching without residual adhesive. It is widely used in the assembly of electronic products and the fixing of parts, such as the fixing of batteries in smartphones and the fixing of LCD screens in notebook computers. As a double-sided adhesive tape, easy-pull adhesive can provide firm and reliable long-term bonding, and when a failure needs to be reworked, it can be removed by lateral stretching without residual adhesive, so as not to cause damage to the parts that need to be recycled and repaired. [0003] In addition, during the manufacturing, production, assembly, and handling of electronic products, static e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J153/02C09J145/00C09J193/04C09J11/06C09J11/08C09J9/02C09J7/10C09J7/28C09J7/21C09J7/30C09J7/26
CPCC08K2201/003C08K2201/004C08L2205/03C08L2207/04C09J7/10C09J7/21C09J7/26C09J7/28C09J7/30C09J9/02C09J11/06C09J11/08C09J153/02C09J2301/124C09J2301/312C09J2400/163C08L45/00C08K7/06C08K9/02C08K3/04C08L93/04
Inventor 滕超吴新妹王国伟李言
Owner 安徽屹珹新材料科技有限公司
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