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Impact-resistant graphene oxyfluoride composite polyimide powder coating and preparation method thereof

A technology of graphene composite polyimide and powder coatings, which is applied in powder coatings, coatings, etc., can solve the problems of strong interfacial interaction, performance improvement that does not meet expectations, and lack, etc., to achieve good hydrophobicity and improve surface mechanical properties , increase the effect of interface interaction

Inactive Publication Date: 2017-05-31
ANHUI RONGJIU OPTICAL FIBER COMM
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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

Method used

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Embodiment Construction

[0022] A kind of impact-resistant oxyfluorinated graphene composite polyimide powder coating, it is made of the raw material of following weight part:

[0023] Polyimide 100, fluorinated graphite 10, potassium persulfate 0.1, sodium nitrate 1, potassium permanganate 0.1, sebacic acid 4, phosphorus pentoxide 0.5, dicyclohexylcarbodiimide 0.1, 4 dimethylamino Pyridine 0.1, trimethylolpropane 0.1, ammonium fluozirconate 2, sodium lauryl sulfate 0.7, sorbitan monooleate 0.4, alkanolamide 0.8, stannous sulfide 0.5, dibutyl phthalate 5, di Proper amount of methyl formamide, sulfuric acid, absolute ethanol.

[0024] A preparation method of the impact-resistant oxyfluorinated graphene composite polyimide powder coating comprises the following steps:

[0025] (1) Add the above-mentioned ammonium fluozirconate to deionized water 30 times its weight, stir evenly, add the above-mentioned sorbitan monooleate, raise the temperature to 57°C, add 10mol / l sulfuric acid dropwise, and adjust th...

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Abstract

The invention discloses an impact-resistant graphene oxyfluoride composite polyimide powder coating. The powder coating is prepared from the following raw materials in parts by weight: 100-110 parts of polyimide, 10-14 parts of graphite fluoride, 0.1-0.3 part of potassium peroxodisulfate, 1-2 parts of sodium nitrate, 0.1-0.4 part of potassium permanganate, 4-6 parts of sebacic acid, 0.5-1 part of phosphorus pentoxide, 0.1-0.2 part of dicyclohexyl carbodiimide, 0.1-0.2 part of 4-dimethylaminopyridine, 0.1-0.3 part of trimethylolpropane, 2-4 parts of ammonium fluozirconate, 0.7-1 part of sodium laurylsulfate, 0.4-1 part of sorbitan monooleate, 0.8-2 parts of alkylolamides, 0.5-1 part of stannous sulfide, 5-7 parts of dibutyl phthalate and a proper amount of dimethylformamide, sulfuric acid and absolute ethyl alcohol. The coating disclosed by the invention is high in surface strength, high in impact resistance, high in toughness and excellent in overall performance.

Description

technical field [0001] The invention relates to the technical field of powder coatings, in particular to an impact-resistant oxyfluorinated graphene 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 prominent. Like graphene oxide, fluorinated graphene also seriously destroys the original highly conjugated structure due to the introduction of sp...

Claims

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Application Information

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IPC IPC(8): C09D179/08C09D5/03C09D7/12
CPCC08K3/04C08K9/02C08K9/04C08K13/06C09D5/033C09D179/08
Inventor 谷道荣
Owner ANHUI RONGJIU OPTICAL FIBER COMM
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