The most important difference between non-stick cookware and ordinary cookware is that the surface is coated with a layer of non-stick paint, and the Teflon non-stick cookware commonly used on the market is to coat the main raw material of fluorinated resin such as polytetrafluoroethylene coating on the metal surface such as aluminum, copper or iron, and through sintering.

Properties of NI-PTFE coatings

PTFE coatings can be applied to metal materials such as carbon steel, stainless steel, aluminum, copper, magnesium and various alloys, and can also be applied to non-metallic materials such as glass, glass fiber and some rubber plastics. The application of flon coatings is usually a combination of its own superior properties, including non-viscosity, low friction coefficient, moisture, extremely high surface resistance, high temperature resistance, chemical resistance, low temperature stability, etc.

(1)The surface of the non-stick coating has a very low surface tension, and therefore shows a strong non-stick. Very few solid substances can stick to the coating permanently. Most materials are easy to clean on their surfaces, although the gelatinous material may have some adhesion to its surface.

(2)PTFE has the lowest coefficient of friction among all solid materials, ranging from 0.05 to 0.2, depending on the surface pressure, sliding speed and the material of the coating.

(3)The non-wetting coating surface is extremely hydrophobic and oleophobic, so cleaning is easier and more thorough. In fact, in many cases the coating appears to be self-cleaning.

(4)The extremely high surface resistance can even have a certain conductivity after special formulation or industrial treatment, and can be used as an antistatic coating.

(5)The high temperature resistant coating has extremely high temperature resistance and fire resistance, which is due to the high melting point and spontaneous combustion point of PTFE, as well as unexpectedly low thermal conductivity. PTFE coating operating temperature can reach up to 290 ℃, intermittent operating temperature can even reach 315 ℃.

(6)Chemical resistance Generally, PTFE is not affected by the chemical environment. The only chemicals known to affect PTFE are molten alkali metals and fluorinated agents at high temperatures.

(7)Low temperature stability, many PTFE industrial coatings can withstand the harsh absolute zero without loss of mechanical properties. PTFE industrial coatings can even be used at temperatures as low as minus 270 ° C. NI-PTFE coating is a unique high-performance coating, which is the organic penetration fusion of Teflon particles and nickel base. This coating process achieves the best combination of surface hardness, corrosion resistance and surface friction. The coating thickness can be as thin as 2.5μm, which can uniformly cover more complex workpiece surfaces. After heat treatment, the steel coating can reach HRC62, and the surface dry friction coefficient after coating can be reduced by 95%, from 1.4 before coating to 0.07 after coating. It combines heat resistance, chemical inertness, excellent insulation stability and low friction.

NI-PTFE coating technology features:

(1)The coating has good bonding force, does not fall off, does not crack, and is much higher than electroplating.

(2)With high hardness and high wear resistance, small pores, smooth surface, in many places can replace stainless steel.

(3)The coating thickness is very uniform, and generally no grinding is required after plating.

(4)Uniform coating can be obtained on the inner surface of blind holes, pipe fittings, deep holes and gaps.

Laboratory Certificate

The surface structure, wettability, mechanical and tribological properties of Teflon coatings for food are directly affected by the application temperature. When the heating temperature is less than 500 ℃, the wettability, hardness and tribological properties of the coating do not change significantly, and the wear mechanism mainly shows abrasive wear, fatigue wear and brittle fracture. When the heat treatment temperature reaches 550 ℃, the fluorine resin in the coating is completely decomposed, the surface structure is seriously damaged, and the coating has a large area of spalling phenomenon. At the same time, the surface loses hydrophobic properties and the hardness of the coating decreases significantly. The friction coefficient increases sharply both under dry friction conditions and in water medium. The wear mechanism is mainly furrow and adhesive wear.

Cookers with Teflon non-stick coatings do not experience any changes in the temperature range from room temperature to 260 ° C (550 F), but when the temperature exceeds 260 ° C, the coating gradually transitions to an unstable state, and decomposition occurs when the temperature exceeds 350 ° C (660F). In the daily cooking method, the high temperature stir-frying usually only reaches a temperature of about 200 ° C, even if the method of frying is used, the oil temperature generally does not exceed 250 ° C, so in normal cooking, there is no need to worry about the decomposition of the coating to release harmful substances.

The non stick coating series has become a hot product of Sinograce Chemical.Spray non stick coating, manufactured based on high-quality materials and advanced technology, has reasonable structure, excellent performance, stable quality, and long-lasting durability. It is a reliable product which is widely recognized in the market.