Water-based conductive adhesive and preparation method thereof
An adhesive and water-based technology, applied in the direction of conductive adhesives, adhesives, adhesive types, etc., can solve the problems of poor adhesion of conductive adhesives
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[0029] The present invention also provides a kind of preparation method of water-based conductive adhesive, comprising the following steps:
[0030] In terms of parts by mass, mix water-based polyurethane emulsion, poly-3,4-ethylenedioxythiophene-polystyrenesulfonic acid, talcum powder, coupling agent, water-based leveling agent and organic bentonite, and sand mill for 1.5 to 3 minutes after stirring. hours, the stirring speed is preferably 1500-3000rpm, more preferably 2000rpm, then add water-based curing agent and water-based film-forming aid, stir and filter, the stirring speed is preferably 1800-3000rpm, more preferably 2600rpm, stirring The time is preferably 20-35 minutes to obtain a water-based conductive adhesive.
[0031] The obtained water-based conductive adhesive is sprayed on the ABS plastic substrate and PET non-woven fabric, and the spraying amount is 160g / m 2 , dried at 80°C for 2 minutes, and then bonded and tested for peeling force. Coat the conductive glue...
Embodiment 1
[0035] 48g of water-based polyurethane emulsion Sancure12954, 3g of poly 3,4-ethylenedioxythiophene-polystyrenesulfonic acid (conductivity 1.0×10 4 ohm / m 2 , with a molecular weight of 8000 Daltons), 1g of talc powder (1280 mesh), 3g of coupling agent KH-550, 0.15g of water-based leveling agent BYK-380 and 0.08g of Hemings Bentone38 organic bentonite, and stir After sanding for 1.5 hours, the stirring speed was 2000rpm;
[0036]Under stirring conditions, add 2.4g of water-based curing agent Bayhydur3100, 5g of water-based film-forming aid ethylene glycol butyl ether, and filter after 20 minutes of high stirring. The stirring speed is 2500rpm to obtain a water-based conductive adhesive.
[0037] The water-based conductive adhesive that embodiment 1 obtains is sprayed on the ABS plastic substrate and the PET non-woven fabric, and the spraying amount is 160g / m 2 , dried at 80°C for 2 minutes, then bonded, and tested for peeling force, the peeling force was 85N / cm; coated the co...
Embodiment 2
[0039] 75g of water-based polyurethane emulsion Sancure2026, 7g of poly 3,4-ethylenedioxythiophene-polystyrenesulfonic acid (conductivity 1.0×10 5 ohm / m 2 , with a molecular weight of 14000 Daltons), 5g of talc powder (1280 mesh), 8g of coupling agent KH560, 0.42g of water-based leveling agent BYK-307 and 0.17g of Hemings Bentone38 organic bentonite, and sand after stirring Grinding for 3 hours, the stirring speed is 1800rpm;
[0040] Under stirring conditions, 5.2 g of water-based curing agent Bayhydur XP2547 and 12 g of water-based film-forming aid diethylene glycol butyl ether were added, and then filtered after high stirring for 35 minutes. The stirring speed was 2600 rpm to obtain a water-based conductive adhesive.
[0041] The water-based conductive adhesive obtained in embodiment 2 is sprayed on the ABS plastic substrate and PET non-woven fabric, and the spraying amount is 160g / m 2 , dried at 80°C for 2 minutes, then bonded and tested for peeling force, the peeling fo...
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