Graphene conductive additive for conductive ink and preparation method
A technology of conductive additives and conductive inks, applied in inks, applications, household appliances, etc., can solve problems such as the inability to form an effective conductive network, and achieve the effects of low cost, simple process, and stable conductivity
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Embodiment 1
[0032] Embodiment 1 A kind of preparation method of the graphene conductive additive for conductive ink
[0033] Follow these steps:
[0034]a. Add graphene oxide into water, ultrasonically disperse to obtain graphene oxide dispersion, then add isocyanate oligomer and silane, heat up to 60°C, then add ammonia water, absolute ethanol and reducing agent, mix and pass through sol-gel Graphene-doped SiO 2 Gel; Wherein, the weight ratio of graphene oxide and water is 1:150; The weight ratio of graphene oxide, isocyanate oligomer and silane is 3:80:20; Ammonia, absolute ethanol, reducing agent and graphene oxide The weight ratio is 40:80:0.1:1; The reducing agent used is hydrazine hydrate; Silane is trimethylchlorosilane;
[0035] The preparation method of the isocyanate oligomer is: adding trimethylolpropane to acetone, raising the temperature to 60°C, and then adding dibutyltin dilaurate; when the temperature rises to 65°C, adding hexamethylene diisocyanate, continuing Raise th...
Embodiment 2
[0037] Embodiment 2 A kind of preparation method of the graphene conductive additive for conductive ink
[0038] Follow these steps:
[0039] a. Add graphene oxide into water, ultrasonically disperse to obtain graphene oxide dispersion, then add isocyanate oligomer and silane, heat up to 60°C, then add ammonia water, absolute ethanol and reducing agent, mix and pass through sol-gel Graphene-doped SiO 2 Gel; Wherein, the weight ratio of graphene oxide and water is 1:200; The weight ratio of graphene oxide, isocyanate oligomer and silane is 4:80:20; Ammonia, dehydrated alcohol, reducing agent and graphene oxide The weight ratio is 40:85:0.1:1. The reducing agent used is hydrazine hydrate; Silane is triethylchlorosilane;
[0040] The preparation method of the isocyanate oligomer is: adding trimethylolpropane to acetone, raising the temperature to 60°C, and then adding dibutyltin dilaurate; when the temperature rises to 65°C, adding hexamethylene diisocyanate, continuing Raise...
Embodiment 3
[0042] Embodiment 3 A kind of preparation method of graphene conductive additive for conductive ink
[0043] Follow these steps:
[0044] a. Add graphene oxide into water, ultrasonically disperse to obtain graphene oxide dispersion, then add isocyanate oligomer and silane, heat up to 60°C, then add ammonia water, absolute ethanol and reducing agent, mix and pass through sol-gel Graphene-doped SiO 2 Gel; Wherein, the weight ratio of graphene oxide and water is 1:300; The weight ratio of graphene oxide, isocyanate oligomer and silane is 3:90:20; Ammonia, dehydrated alcohol, reducing agent and graphene oxide The weight ratio is 40:90:0.1:1. The reducing agent used is hydrazine hydrate; Silane is phenyl dimethyl chlorosilane;
[0045] The preparation method of the isocyanate oligomer is: adding trimethylolpropane to acetone, raising the temperature to 60°C, and then adding dibutyltin dilaurate; when the temperature rises to 65°C, adding hexamethylene diisocyanate, continuing R...
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