What's the chemical composition of the black protective film inside the rice cooker?
From a healthy point of view: non stick pot, no pot healthWith the United States Environmental Protection Agency (EPA) decided that the core component to American DuPont Co and other 8 chemical companies gradually reduced until discontinued manufacturing required TFLON perfluorooctanoic acid (PFOA). This lasted for 3 years of "TEFLON" controversy finally set the official tone. Experts at the WHO (WHO) suggest that people should choose safe and healthy Chinese wok.
PFOA is necessary in the process of production of Teflon additives, although in the finished product has no trace, but at high temperatures may still be decomposition. The study found that Teflon at high temperatures, will release more than ten kinds of harmful gases, cause some respiratory sensitive animal death. But the toxic effects of these gases on humans have not been determined.Chemically stable PFOA, which enters the natural environment and the human body, will persist for a long time rather than soon. Studies have shown that low doses of PFOA occur not only in rivers, oceans, and soil, but also in people's blood. Because the artificial compounds have been proved to have carcinogenic and other adverse effects in animal experiments, they are widespread in the natural environment and the human body, and the consequences are worrisome.Non stick pot conditions can not be used for acidic food except for temperature limit below 250 degrees celsius. According to the investigation, the non stick pot sold on the market has not marked the restricted use condition at present.
According to EPA requirements, in 2010 to reduce the use of 95% of PFOA, by 2015 to be fully disabled.The reason why non stick cookware, all in the bottom of the layer is called "TEFLON" coating. This material is a general term of 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, waterproof breathable material (such as waterproof clothing, leather, automotive parts) and microwave popcorn bags etc..
