Nonstick pan coating layer, and production method and nonstick pan thereof

Abstract

The invention provides a nonstick pan coating layer, and a production method and a nonstick pan thereof. The production method comprises the following steps: mixing organosilicone resin, modified silicon carbide, nanometer calcium carbonate, mica powder, amino resin, a dispersant and a solvent, grinding the obtained mixture, dispersing the ground mixture, and filtering the dispersed mixture to obtain a coating; and spraying the coating on the surface of a metal pan matrix, and baking the sprayed metal pan matrix at 200-300DEG C for 10-30min to obtain the nonstick pan coating layer. The organosilicone resin, saturated modified silicon carbide and the nanometer calcium carbonate are simultaneously applied to the nonstick pan coating layer in order to form the coating layer with excellent performances of above three components. The modified silicon carbide has good thermal stability, corrosion resistance and thermal conduction performance, and guarantees the thermal distribution uniformity of the coating layer; the nanometer calcium carbonate makes the microscopic surface of the organosilicone coating layer be tight and have zero porosity, protects the matrix, and enhances the nonstick effect of the coating layer, and the nanometer calcium carbonate and the modified silicon carbide have synergism, and enhance the hardness and the heat resistance of the nonstick pan coating layer.

Description

technical field [0001] The invention relates to the technical field of non-stick pans, in particular to a non-stick pan coating, a preparation method and a non-stick pan. Background technique [0002] As the most commonly used food cooking tool for a long time, metal pots have problems such as sticking and scorching of food, which are harmful to human health. Since the 1960s, non-stick pans have entered family life. The main principle is: spray a layer of non-stick coating with polytetrafluoroethylene as the main raw material on the surface of the pan body, and sinter at a high temperature of 420 ° C to make The non-stick coating is closely combined with the substrate, and the food and the pan are separated by the strong chemical inertness of the non-stick coating, so as to play a non-stick effect. However, PFOA is used as a raw material in the production process of PTFE, which may be harmful to the human body and the environment, which once caused panic among consumers. F...

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Problems solved by technology

[0003] Silicone resins have excellent thermo-oxidative stability, electrical insulation and non-stick properties, however, pure silicone resins also have some disadvantages, such as poor temperature resistance, chemical resistance, corrosion resistance and low hardness

Although polyester modified silicone resin can improve some shortcomings of silicone resin, there will be new problems, such as the hardness of silicone resin after modification is not greatly improved, and the heat resistance is low when the content of silicone resin is low. The performance is very poor, and the cost of high-performance modified resins is still high, etc.

[0004] Non-stick coatings have been widely reported in the prior art. For example, the Chinese patent literature with application number 201110316124.7 has reported a kind of anti-blocking coating for cookware, which consists of polyethersulfone, polyphenylene sulfide, anti-blocking agent, pigment, water Composed of solvent and solvent, it improves the hardness, wear resistance and corrosion resistance of the coating. However, the anti-blocking agent still uses Teflon or other fluorine coatings. Fluorine coatings and iron substrates are prone to flash corrosion. Does not protect the substrate well

A Chinese patent document with application number 201310015258.4 reports a nano-SiO 2 Hybrid polyester modified silicone non-stick coating, the coating has the characteristics of good non-stick, good temperature resistance, excellent chemical resistance, corrosion resistance, high hardness, etc. However, most of the organic solvents used are harmful to the environment and construction Inconvenient and expensive

The Chinese patent document with the application number 201510407337.9 reports a production process of nano-silicon carbide material for non-stick pan coating. The production process is simple, the cost of raw materials is low, the energy consumption is small, the product yield is high, and the applicability is wide. However, due to the complicated construction and high price of this kind of nano-ceramic non-stick coating, its use and promotion are limited.

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