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Hydrophobic oxyfluorinated-graphene composite polyimide powder paint and preparation method thereof

A graphene composite polyimide, powder coating technology, applied in powder coatings, coatings and other directions, can solve the problems of lack, strong interface effect, performance improvement not meeting expectations, etc., to improve surface mechanical properties, good hydrophobicity , the effect of increased rigidity

Inactive Publication Date: 2017-06-06
ANHUI RONGJIU OPTICAL FIBER COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

[0023] A kind of hydrophobic oxyfluorinated graphene composite polyimide powder coating, it is made by the raw material of following weight part:

[0024] 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, zinc pyrithione 0.4, dibenzothiazole disulfide 0.6, alkenyl succinic anhydride 2, polyoxyethylene oleate 1, beeswax 2, hexamethylphosphoric triamide 0.1, montmorillonite powder 6, sulfur Butyl tin alcohol 0.3, dimethylformamide, sulfuric acid, absolute ethanol in appropriate amount.

[0025] A kind of preparation method of described hydrophobic oxyfluorinated graphene composite polyimide powder coating comprises the following steps:

[0026] (1) Add the above alkenyl succinic anhydride to deionized water 21 times its weight, raise the temperature to 60°C, keep stirring for 4 minutes, add montmorillonite powder, co...

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Abstract

The invention discloses a hydrophobic oxyfluorinated-graphene composite polyimide powder paint which is prepared from the following raw materials in parts by weight: 100-110 parts of polyimide, 10-14 parts of fluoridized graphite, 0.1-0.3 part of potassium persulfate, 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 pat of dicyclohexylcarbodiimide, 0.1-0.2 part of 4-dimethylaminopyridine, 0.4-1 part of zinc pyrithione, 0.6-1 part of dibenzothiazyl disulfide, 2-3 parts of alkenyl succinic anhydride, 1-2 parts of polyoxyethylene oleate, 2-4 parts of beeswax, 0.1-0.4 part of hexamethyl phosphoryl triamide, 6-8 parts of montmorillonite powder, 0.3-1 part of butyl tin mercaptide, and right amounts of dimethylformamide, sulfuric acid and anhydrous ethanol. The powder paint has the advantages of favorable hydrophobicity, high seepage resistance, high surface strength, favorable toughness and excellent comprehensive properties.

Description

technical field [0001] The invention relates to the technical field of powder coatings, in particular to a hydrophobic 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 sp3 C-C ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D179/08C09D5/03C09D7/12
CPCC08L2205/03C09D5/033C09D179/08C08L71/02C08L91/06C08K13/06C08K9/04C08K3/346C08K9/02C08K3/04
Inventor 谷道荣
Owner ANHUI RONGJIU OPTICAL FIBER COMM
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