Compound conductive ink and preparation method thereof
A composite conductive and ink technology, which is applied in ink, household utensils, applications, etc., can solve the problems of poor conductivity of graphene ink, inability to meet industrial production, complex manufacturing process, etc. good adaptability
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Embodiment 1
[0063] First, pretreat the purchased graphene with a jet mill; secondly, weigh 3.21g of sodium alginate (SA), 71.24g of deionized water and 20g of ethanol, add them to the dispersion tank, and stir at 50°C to make them Completely dissolve, stand still for a while, make it swell fully, the solution is uniform and transparent, promptly obtain resin colloid solution; Then, under stirring at 200rpm rotating speed, slowly mix 5.05g graphene, 0.5g flavin mononucleotide and 0.1g acetic acid butyric acid Cellulose (CBA) was added to the swollen resin colloid solution, the rotating speed was adjusted to 1200rpm, the cooling water temperature was 20°C, and the high-shear dispersion was performed for 30min, and mixed into a uniform graphene coarse slurry; finally, the three-roll mill was used to grind the The graphene slurry was ground twice to prepare a water-based graphene composite conductive ink.
[0064] The resistivity of the water-based graphene composite conductive ink is 0.0076Ω...
Embodiment 2
[0066] Firstly, pre-treat the purchased graphene with a jet mill; secondly, weigh 5.75g of alginic acid and 3.46g of ethyl cellulose, dissolve them in 65.34g of deionized water and 5g of ethanol, and stir at 50°C. Make it dissolve completely, let it stand still for a while, make it swell fully, and the solution is uniform and transparent, and obtain the resin colloid solution; Cellulose (CBA) was added to the swollen resin colloid solution, the rotating speed was adjusted to 1200rpm, the cooling water was 20°C, and the high-shear dispersion was performed for 30 minutes, and mixed into a uniform graphene coarse slurry; finally, the graphite was mixed with a three-roll mill. Graphene slurry was ground twice to prepare water-based graphene composite conductive ink.
[0067] The resistivity of the water-based graphene composite conductive ink is 0.0056Ω·cm, and the conductivity is 1.79×10 4 S / m.
Embodiment 3
[0069] First, pre-treat the purchased graphene with a jet mill; second, weigh 15.76g of pectin, dissolve it in 55.17g of deionized water and 7g of butanol, stir it at 50°C to dissolve it completely, and let it stand still for a while , make it swell fully, the solution is homogeneous and transparent, promptly obtains the resin colloid solution; Then, under stirring at 200rpm rotating speed, slowly add 20.07g graphene, 2g reactive diluent and 0.1g cellulose acetate butyrate (CBA) to swell In the good resin colloid solution, the rotating speed is adjusted to 1300rpm, the cooling water is 20°C, and the high-shear dispersion is performed for 30 minutes, and mixed into a uniform graphene slurry; finally, the graphene slurry is ground 2 times with a three-roll mill, A water-based graphene composite conductive ink was prepared.
[0070] The resistivity of the water-based graphene composite conductive ink is 0.0384Ω·cm, and the conductivity is 0.26×10 4 S / m.
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