Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Graphene Dispersion
A graphene dispersion is disclosed which comprises graphene platelets; graphene oxide platelets; and water, wherein the concentration of graphene platelets in the additive is from 29 mg.ml-1 to 150 mg.ml-1 and the concentration of graphene oxide platelets in the additive is from 1 mg.ml-1 to 50 mg.ml-1. The graphene platelets have an average lateral flake dimension of greater than 1 µm. The graphene oxide platelets have an average lateral flake dimension of less than 0.9 µm. Also disclosed is a method of making a graphene dispersion, the method comprising the steps of (i) mixing graphene oxide platelets, or a graphene oxide precursor material, with water; (ii) mixing at high shear at at least 4000 rpm for at least 15 minutes; (iii) adding graphene platelets, or a graphene precursor material; and (iv) mixing at high shear at at least 4000 rpm for at least 15 minutes; wherein the steps are carried out in the order (i), (ii), (iii), (iv) or (iii), (iv), (i), (ii).
Graphene Dispersion
A graphene dispersion is disclosed which comprises graphene platelets; graphene oxide platelets; and water, wherein the concentration of graphene platelets in the additive is from 29 mg.ml-1 to 150 mg.ml-1 and the concentration of graphene oxide platelets in the additive is from 1 mg.ml-1 to 50 mg.ml-1. The graphene platelets have an average lateral flake dimension of greater than 1 µm. The graphene oxide platelets have an average lateral flake dimension of less than 0.9 µm. Also disclosed is a method of making a graphene dispersion, the method comprising the steps of (i) mixing graphene oxide platelets, or a graphene oxide precursor material, with water; (ii) mixing at high shear at at least 4000 rpm for at least 15 minutes; (iii) adding graphene platelets, or a graphene precursor material; and (iv) mixing at high shear at at least 4000 rpm for at least 15 minutes; wherein the steps are carried out in the order (i), (ii), (iii), (iv) or (iii), (iv), (i), (ii).
Graphene Dispersion
CRAIG DAWSON (Autor:in) / LISA SCULLION (Autor:in) / HAPPINESS IJIJE (Autor:in)
03.05.2023
Patent
Elektronische Ressource
Englisch
| Europäisches Patentamt | 2024