If the rice cooker is used for a long time, will the non stick coating fall off?
When the nonstick coating of the rice cooker falls off, there may be a spillage of material harmful to the human body. The nonstick coating of the rice cooker has fallen off. It's best not to use it. You need to find a new container to replace it. When buying non stick pan, you should choose the qualified product. Don't use the steel wire ball when you are cleaning the nonstick pan. Usually, the rice shovel is better than metal.
However, PTFE has a congenital defect: the joint strength is not high, easy to fall off. The loss of non stick coating is generally related to the thickness of the metal substrate (that is, the pan) and the thickness of the nonstick coating. The national standards for the minimum thickness of the frying pan, wok base material were 2 mm and 2.5 mm; the minimum thickness of the boiling pot, milk pot base material were 1.6 mm and 1.8 mm. If the base material is thinner, on the one hand, the pot body is easy to deformation, and the more serious is to reduce the metal transverse heat conduction area of the pot bottom, resulting in uneven distribution of heat, so as to appear hot spots. If the hot spots exceed the coating, they will cause permanent damage to the non stick coating, which will result in the coating falling off. Secondly, the thickness of nonstick coating is also an important indicator of the quality of nonstick pan, which will affect the service life and performance of Nonstick pan. The requirements of the national standard, the average thickness of the frying pan frying pan is greater than or equal to 25 microns; the average thickness of the boiling pot, milk pot is greater than or equal to 20 microns. Regular manufacturers of rice cookers are not sticky pot, inner liner is relatively thick, to weigh it by hand, feeling very heavy; and the poor quality of non stick pot, are relatively thin, non stick pot coating is easier to fall off.
The inner liner of the rice cooker usually consists of two parts: base material and non stick coating. The basic material is made more Aluminum Alloy alloy, non stick coating is generally divided into ceramic coating and coating "TEFLON" two kinds of ceramic coatings, harmless to the human body, but the price is very high. Currently on the market with a non stick coating is the most Teflon, this material is called fluorine resin, including PTFE, FEP and fluorinated copolymers, because these compounds with high temperature, low temperature, self lubricity, chemical stability and other advantages, it is widely used in non stick cookware, a senior the incorporation of antioxidants and stabilizers to improve the heat resistance of ptfe.
