Is non stick coating really toxic?

There is a saying on the Internet that "the coating of non stick pot is poisonous and can't be used". In fact, since the advent of non stick pot, this worry has never stopped! However, is the non stick coating really toxic? Why do people have such worries?

First of all, let's understand what kind of coating of non stick pot is. At present, the coating of non stick pot is divided into two materials: Teflon and ceramic coating. Teflon coating is mainly fluoropolymer, which is also known as "plastic". The initial component is polytetrafluoroethylene, which has the reputation of "plastic king", and has the characteristics of chemical corrosion resistance and aging resistance. Later, with the improvement of polytetrafluoroethylene, it also began to be used in a variety of products such as pots and utensils. The main component of ceramic coating is silica. Silica is a kind of natural inorganic product, which is used in the inner wall of pot. The particle size of the material can reach nanometer level, and it will not produce toxic substances.