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
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[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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