A kind of functionalized graphene-doped epoxy resin conductive adhesive and preparation method thereof
A technology of epoxy resin and graphene, which is applied in the field of conductive adhesives, can solve problems such as the decline of electrical conductivity, and achieve the effects of not easy to fall off and migrate, improve utilization rate, and high uniformity and stability
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Embodiment 1
[0029] (1) Prepare 1ml of 0.1M silver nitrate aqueous solution and 1ml of 0.1M sodium citrate aqueous solution respectively, then mix and shake well. Add 10ml of deionized water and sonicate for 30 minutes. It was then dropped into 20ml of graphene oxide aqueous solution with a concentration of 1.08mg / ml, ultrasonicated for 30 minutes, poured into a 250ml single-necked flask, and then magnetically stirred for 12 hours at normal temperature with an aluminum film.
[0030] (2) Then heat in an oil bath to 130°C for 3 hours. Afterwards, 0.216 g of sodium citrate was added and the temperature was maintained at 90° C. for 10 hours. Move the product to the platform to cool down to room temperature, and then centrifuge and wash thoroughly with deionized water and ethanol solution. Prepared into 2mg / ml ethanol solution.
[0031] (3) Put 28.8021g of bisphenol A type E-51 epoxy resin, 1.089g of curing agent dicyandiamide and 0.1089g of curing accelerator 2,4,6-tris(dimethylaminomethyl...
Embodiment 2
[0033] (1) Prepare 1ml of silver nitrate aqueous solution with concentration of 0.1M and 1ml of sodium citrate aqueous solution with concentration of 0.05M respectively, then mix and shake well. Add 10ml of deionized water and sonicate for 30 minutes. It was then dropped into 50ml of graphene oxide aqueous solution with a concentration of 1.08mg / ml, ultrasonicated for 30 minutes, poured into a 250ml single-necked flask, and then magnetically stirred for 15 hours at normal temperature with an aluminum film.
[0034] (2) Then heat in an oil bath to 130°C for 3 hours. Afterwards, 1.08 g of sodium citrate was added and the temperature was maintained at 90° C. for 10 hours. Move the product to the platform to cool down to room temperature, and then centrifuge and wash thoroughly with deionized water and ethanol solution. Prepared into 5mg / ml ethanol solution.
[0035] (3) Put 29.1g of bisphenol F type epoxy resin, 0.816g of curing agent dicyandiamide and 0.084g of curing acceler...
Embodiment 3
[0037] (1) Prepare 1ml of 0.1M silver nitrate aqueous solution and 1ml of 0.1M sodium citrate aqueous solution respectively, then mix and shake well. Add 10ml of deionized water and sonicate for 30 minutes. It was then dropped into 50ml of graphene oxide aqueous solution with a concentration of 1.08mg / ml, ultrasonicated for 30 minutes, poured into a 250ml single-necked flask, and then magnetically stirred for 14 hours at normal temperature with an aluminum film.
[0038] (2) Then heat in an oil bath to 130°C for 3 hours. Afterwards, 1.08 g of sodium citrate was added to maintain 90° C. for 10 hours. Move the product to the platform to cool down to room temperature, and then centrifuge and wash thoroughly with deionized water and ethanol solution. Prepared into 5mg / ml ethanol solution.
[0039] (3) 30.3125g of bisphenol A type E-51 epoxy resin, 0.8525g of curing agent dicyandiamide and 0.085g of curing accelerator 2,4,6-tris(dimethylaminomethyl)phenol are placed in the The ...
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