Preparation method of polyetheretherketone nonstick coating material

Abstract

The invention relates to a preparation method of polyetheretherketone nonstick coating material. The method is characterized by comprising the following steps: adding multiwalled carbon nanotubes into concentrated nitric acid and concentrated sulfuric acid, and stirring at 60-120 DEG C; adding reactants drop by drop into ice water, allowing to stand for layering, washing with distilled water, drying and grinding for obtaining a first reaction product; carrying out a reaction of the first reaction product and thionyl chloride and dimethyl formamide for obtaining a second reaction product; after dissolving the second reaction products with acetone, adding the second reaction product drop by drop into a mixed solution of hydroquinone, triethylamine and acetone, performing a reaction for 1.8-2.2 hours at 55-65 DEG C, carrying out a pumping filtration, washing, drying for obtaining a third reaction product; under the protection of nitrogen, adding the third reaction product, hydroquinone, 4,4'-difluorobenzophenone and sulfobenzide in order into a reactor, carrying out heating to 140-160 DEG C, adding alkali carbonate, and reacting for 5 hours; after grinding, washing and drying, obtaining a polyetheretherketone nonstick coating.

Description

technical field [0001] The invention relates to a non-stick coating, in particular to a preparation method of a modified polyether ether ketone non-stick coating material. Background technique [0002] At present, the non-stick coating used in pots and pans on the market is mainly Teflon. Teflon is a synthetic organic compound containing PFOS and PFOA. Because of its excellent performance, wear resistance, heat resistance, water resistance and oil resistance, long service life, it will not stick together with various foods when applied to the bottom of the pot, so Widely used in the production of non-stick pans. However, the research reports on the harmful aspects of Teflon are very worrying. On July 10, 2004, the U.S. Environmental Protection Agency stated that ammonium perfluorooctanoate, the main component of DuPont’s Teflon material, may cause cancer and may bring harm to human health. to potential hazards. [0003] Polyetheretherketone, English name Poly-ether-ether-...

AI Technical Summary

Problems solved by technology

However, the traditional PEEK coating has poor thermal conductivity and is not suitable as a non-stick coating for cookware

[0006] The Chinese patent application with the notification number CN102139263B discloses a method for using polyether ether ketone thermally conductive insulating coatings, which improves the thermal conductivity of the coating by adding thermally conductive inorganic fillers, including silicon carbide, gallium nitride, and nano-aluminum nitride. The inorganic filler used is unstable under hot and alkaline conditions, and the use safety is not good

[0007] For another example, the Chinese patent application with the notification number CN102757635A discloses a polyether ether ketone composite material and its preparation method. The patent improves the thermal conductivity of polyether ether ketone by adding nano-diamond powder, and the nano-diamond powder used is expensive. High cost, not suitable for large-scale promotion

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