Hot rice goes in and poisonous rice comes out, harmful imitation porcelain bowls are exposed, releasing melamine and formaldehyde


3-year-old Emily is an Australian. She was originally a healthy, lively and cute girl, but an acute lymphoblastic leukemia took everything away.

Emily's parents looked at Emily who was dying on the hospital bed. Her parents couldn't figure out how the disease would come to their daughter.

After some investigation and deduction, the doctor said that her daughter's illness is probably related to her usual job! This made Emily's parents very puzzled. In addition to heredity, formaldehyde is the biggest external factor that causes leukemia in children. Why is it related to an ordinary job?

It turned out that because the daughter liked the cartoon characters printed in the bowl, and it was unbreakable and the price was reasonable, the couple bought it for their daughter. But unexpectedly, this purchase turned out to be a substandard imitation porcelain bowl, which prevented Emily from having a healthy body so far!

Someone may ask, what is an imitation porcelain bowl? Why is the danger so great? Imitation porcelain bowls are all around us, maybe you are also using such bowls in your home.

When it comes to ceramic bowls, we are all very familiar with them, almost every household has them, so what is the relationship between imitation porcelain bowls and ceramic bowls, and what is the relationship between the two? In layman's terms, imitation porcelain bowls are imitated ceramic bowls, but not a kind of tableware for ceramic bowls. It may be a bit of a mouthful to say this, but let's start with the materials used to make it. Ordinary ceramic bowl body is generally composed of clay, quartz and flux mineral raw materials. Clay raw materials are one of the main raw materials of ceramics. The production of ceramics can be divided into four major processes in sequence: raw material processing, mud molding, glaze and roasting, namely mud mixing, molding, glaze mixing and roasting. Simply put, a ceramic bowl is a kind of tableware made of clay.

The imitation porcelain material used in the imitation porcelain bowl is actually called melamine resin, also known as melamine formaldehyde resin. The name sounds scary, but it is actually made of melamine and formaldehyde. If the raw material resin does not polymerize well, melamine will remain. In other words, the imitation porcelain bowl can be said to be a kind of resin bowl.

Speaking of melamine, maybe everyone’s panic came, but what does this have to do with Emily suffering from leukemia in the above article?

As early as a few years ago, CCTV exposed the dangers of imitation porcelain bowls. Among them, Yang Hong, dean of the School of Chemistry and Chemical Engineering of Nanjing Southeast University, said that melamine resin will undergo chemical changes when it encounters strong acid and alkali, or high temperature, thereby releasing harmful components such as melamine and formaldehyde resin, especially in some unqualified products. in.

In addition, Dean Yang Hong said that even qualified melamine tableware can only withstand high temperatures of about 100°C, and microwave ovens are often higher than this temperature when in use. When the temperature is high, the melamine tableware will release a small amount of melamine and formaldehyde, which will cause adverse effects on health. Therefore, it is best not to heat the melamine tableware in a microwave oven, and the cooling and heating temperature should be controlled within minus 20°C to 100°C.

In addition, there is a worse situation, that is, some people will mix urea and formaldehyde with lower cost to make urea-formaldehyde resin. The thermal decomposition temperature of this substance is lower, and it will decompose at about 100°C. The soup makes it release formaldehyde, and this kind of bowl needs to be especially vigilant.

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