Aluminum sol composite polyimide powder paint and preparation method thereof

Abstract

The invention discloses aluminum sol composite polyimide powder paint. The aluminum sol composite polyimide powder paint is prepared from the following raw materials in parts by weight: 0.6 to 1 part of sodium carboxymethyl cellulose, 0.3 to 1 part of 8-hydroxyquinoline, 2 to 4 parts of oxidized polyethylene wax, 100 to 110 parts of polyimide, 10 to 14 parts of graphite fluoride, 0.1 to 0.3 part of potassium persulfate, 1 to 2 parts of sodium nitrate, 0.1 to 0.4 part of potassium permanganate, 4 to 6 parts of sebacic acid, 0.5 to 1 part of phosphorus pentoxide, 0.1 to 0.2 part of dicyclohexylcarbodiimide, 0.1 to 0.2 part of 4-dimethylaminopyridine, 4 to 7 parts of aluminum isopropoxide, 1 to 2 parts of pyromellitic dianhydride, 0.6 to 1 part of didecyl dimethyl ammonium bromide, 0.8 to 1 part of nickel aminosulfonate, 3 to 4 parts of mannitol and a proper amount of dimethylformamide, sulfuric acid and absolute ethyl alcohol. The aluminum sol composite polyimide powder paint takes the aluminum isopropoxide as a precursor and obtained sol can be effectively improved the dispersity of filling between polymers, and the stability and surface strength of finished product are improved.

Description

technical field [0001] The invention relates to the technical field of powder coatings, in particular to an aluminum sol composite polyimide powder coating and a preparation method thereof. Background technique [0002] Fluorinated graphene maintains the two-dimensional carbon layer structure of graphene, and its chemical composition is similar to polytetrafluoroethylene, so it has the properties of both graphene and polytetrafluoroethylene. Fluorinated graphene has high temperature resistance equivalent to that of polytetrafluoroethylene. It begins to decompose slowly when the temperature is higher than 260 ° C, and decomposes rapidly when the temperature rises above 400 ° C. The properties of fluorinated graphene such as hydrophobicity, solvent resistance and chemical inertness are also particularly outstanding. Like graphene oxide, fluorinated graphene also seriously destroys the original highly conjugated structure due to the introduction of sp3 C-C structure, thus losi...

AI Technical Summary

Problems solved by technology

Because graphene sheets are easy to agglomerate and often lack strong interfacial interactions, the performance improvement of polymer composites prepared directly with graphene as a filler has not met expectations