How is a nonstick pan made? Is the coating scratched and no longer usable? The experiment tells you the answer

In daily life, non-stick pans are ubiquitous. Air fryers, electric baking pans, frying pans, etc. are used very frequently, so some people worry that long-term use will cause the material of non-stick pans to deteriorate and spread into the human body? Will the materials used to make non-stick pans affect human health?

1. The production process of non-stick pan

Have you ever wondered how non-stick pans are made when you use them? The production process of non-stick wicks is extremely complicated. Research on the production of non-stick wicks can be traced back to the 1970s, when the industry was just emerging, and people began to focus on chemical engineering, refining pure metals and refining alloys.

At a meeting of major companies, some professionals proposed to add a special coating to the traditional iron pan to make daily cooking more convenient. Once this proposal was put forward, it was supported by the aluminum enterprises at that time. After the meeting, researchers were organized to study the materials used in the coating.

By chance, it was found that a polymer named polytetrafluoroethylene produced in the research of refrigerants has anti-sticking effect, so polytetrafluoroethylene, as the main material of the coating, can be used as a good anti-sticking material. Combustible agent, if this material is coated in time at high temperature, it will not spontaneously ignite, and PTFE also has anti-corrosion effect.

The main production of non-stick pans is mainly in China. Shengning is a leading manufacturer of non-stick pans in China, and the production process of non-stick pans has been continuously improved. From the pure manual production at the beginning to the present machine instead of manual production, although the production speed has been increased, it is not as durable as the previous manual production.

The bottom of the pot is generally made of aluminum, and the pot is shaped by the external force of the machine; then electroplating, we can learn from chemistry that aluminum easily reacts with oxygen in the air, forming a dense aluminum oxide film on the surface, electroplating It is to prevent the aluminum from oxidizing; then it is coated and baked; finally, the outer surface of the pan is polished and printed with the logos of various companies, and a non-stick pan is completed.

2. The benefits of using non-stick pans

First, let's explain why food sticks to the pan. This is because the starch and protein in domestic food decompose quickly after preheating and stick to the pot. Another reason is that the temperature in the pot is not high enough. Of course, if you want to avoid this situation, you can also choose to add some oil to the pot and burn it to a certain extent, which can effectively prevent sticking to the pot.

As for why non-stick pans are so popular with the public? This is because the birth of the non-stick pan solves the harm of oil fume to the human body, saves time and improves efficiency. After the traditional pan is used, it is time-consuming and laborious to clean the bottom and surrounding areas.

3. Will the material of the non-stick pan cause harm to the human body?

Some people worry: "The non-stick coating is a polymer after all, and it will inevitably cause harm to the body after long-term use." Frustratingly, non-stick coatings usually use two materials, one is fluoropolymer and the other is Silicone polymer.

Both are chemically stable and won't come off even at high temperatures, so there's no need to worry about it inadvertently getting into the food we cook and then into our bodies, where it builds up and increases over time Cancer risk.

Verification experiments are also conducted by professionals. They set up two experiments with 10 mice each of similar shape, size and age. Group A ate the food cooked in A non-stick pan with cracks in the coating every day, and group B ate the food cooked in ordinary non-stick pan every day, and observed the changes of the mice after 15 days. The results showed that there were no significant differences between the two groups of mice, and that the nonstick coating caused no physical harm.

Are women's lipsticks free of chemicals? Many are still keen to buy, with experts saying: "If there is any non-stick coating material that has been removed from everyday life, it is in small quantities.

These amounts are not enough to be life-threatening, so the health hazards of non-stick coatings are essentially negligible. "Of course, if there is too much wear or the coating is damaged in a large area, it is also recommended to replace the kitchen utensils for the convenience of life.