Adhesive for conductive adhesive tapes, and conductive adhesive tape

Abstract

The invention discloses an adhesive for conductive adhesive tapes, and a conductive adhesive tape. The adhesive is characterized by comprising the following components by weight percent: 80% to 90% of acylic acid resin and 10% to 20% of a conductive filling material. According to the invention, materials used for the adhesive and the conductive adhesive tape are halogen-free, according with the RoHS Directive; through control of addition amount, vertical impedance of the conductive adhesive tape is smaller than 0.01 ohm, and viscosity of the tape is not affected; the prepared conductive adhesive tape has very good conductivity at Z direction, after the tape is applied onto an object, a release paper is easy to peel, when the tape is unrolled, rambling of the adhesive on the tape hardly appears, and when the tape is applied onto conductive cloth to wrap wire rods, the tape does not spread apart; the conductive adhesive tape has moderately soft / hard colloidality and is suitable for being applied onto conductive cloth, conductive foam, copper-aluminum foil and release paper for punching processing.

Description

technical field [0001] The invention relates to an adhesive for conductive tapes and a conductive tape. Background technique [0002] Conductive tape is mainly used for EMI / RFI shielding, conduction and electrostatic discharge. Widely used in notebook computer mobile phone computer peripheral products (such as: power supply, rectifier, transformer, connector, etc.), electronic products, and military facilities. [0003] Since July 1, 2006, new electronic and electrical equipment put on the EU market does not contain six harmful substances including lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ethers. Many non-governmental organizations, green environmental protection organizations and international large companies are actively promoting halogen-free actions, and have made relevant restrictions or limits, and at the same time require their suppliers to comply with the restrictions or limits. However, the conductive adhesi...

AI Technical Summary

Problems solved by technology

However, the conductive adhesive tape in the prior art often contains substances such as lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers and halogens due to the raw materials used, which will pollute the environment and also Will have adverse effects on human health, reducing the scope of its use

[0004] The conductive tape in the prior art has poor bending resistance, and the electronic accessories processing factory tends to open its mouth when attaching the conductive adhesive film to the conductive cloth-wrapped wire

The conductive tape in the prior art has poor conductivity in the Z direction, the release paper of the product is not easy to peel off when peeling off, and the product is easy to pull the glue when unrolling

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