Is there a true uncoated non-stick pan?

Is there a true uncoated non-stick pan? Anyone who has used a non-stick pan knows how good it is. Scooping rice without crispy rice and making a whole omelette for breakfast can all be done with a non-stick pan, and it uses less oil and less burnt pan, making it healthier to cook. So are there truly uncoated non-stick pans? Is there a true uncoated non-stick pan? 1

There is no true uncoated non-stick pan.

A non-stick pan is a pan that does not stick to the bottom when cooking because the bottom of the pan is coated with a non-stick coating. The most common non-stick properties are Teflon coating and ceramic coating.

The most common non-stick coating on the market is Teflon. Teflon is the transliteration of Teflon and is a registered trademark used by DuPont on a series of fluoropolymer products. Teflon, also known as "polytetrafluoroethylene", has good chemical resistance and aging resistance, and is difficult to corrode even with "aqua regia".

Non-stick pans cannot be used to cook acidic food

Fluoride expert, deputy secretary-general of the Non-metallic Materials Professional Committee of the Chinese Corrosion and Protection Society, chemical engineering of Shandong University Professor Guan Congsheng, director of the institute, said: "Polytetrafluoroethylene has inherent defects, that is, its bonding strength is not high, the non-stick pan is not completely covered by the PTFE coating, and there are always some parts of the metal surface that are exposed.

Acidic substances easily corrode the metal body. Once the body is corroded, it will expand, which will cause the coating to expand and cause the coating to fall off in a large area. The relevant standards of the Ministry of Health are formulated based on this principle. "Professor Guan also believes, "The coating is mainly used to prevent sticking, but if you spray a thin layer, the bonding force is not strong, and it will definitely not work with a shovel. "Is there a true uncoated non-stick pan? 2

There is no true uncoated non-stick pan.

When a non-stick pan sticks, either the non-stick layer appears If the non-stick pan is damaged, or the surface material of the non-stick layer has not been cleaned, use a scouring pad to wipe some dishwashing liquid on the pan to clean it, and then try its non-stick properties when cooking. Obviously you can continue to use it.

However, there is no remedy for damage to the non-stick coating. Pay special attention to protecting the non-stick layer of the pot during use. It can be extended without a shovel and steel balls. The service life of non-stick pans.

Note:

Do not use sharp metal utensils to clean non-stick pans. Use a wooden spatula or silicone spatula to avoid hard cooking. Do not wash with force or use steel wool. Do not put utensils in them when cleaning them. Do not wash them with cold water immediately after cooking. This will cause the coating to peel off. Wait for the temperature to drop before cleaning. This can prevent harmful substances from decomposing and preventing the coating from falling off.

When choosing a non-stick pan, you should consider the pot body, which is usually made of aluminum, aluminum alloy, stainless steel and other metals. The dazzling array of pots on the market are basically different combinations of two coatings and four pot bodies. For the coating, some wear-resistant materials, metal elements, or color and texture designs will be added. Maybe switch from aluminum pot to stainless steel pot, or add copper core inside to improve thermal conductivity. Is there a true uncoated non-stick pot? 3

1. What is non-stick pot coating? ?

Non-stick pans are coated with a low-friction and surface energy substance on the surface of the pan so that food does not stick to it easily, so we can prevent food from sticking to the pan when we cook food. ? >

The coating on the outside of the non-stick pans we use now is generally made of polytetrafluoroethylene, also known as Teflon. This material has stable physical and chemical properties and is both corrosion-resistant and high-temperature resistant. It is called "plastic." "King".

We all know that the surface of the pot is uneven. Non-stick pots use Teflon to fill the gaps and grooves of the pot to make the surface of the pot smooth, thereby achieving Non-stick effect.

2. Is Teflon really toxic and carcinogenic?

Teflon is a polymer, and the substance itself is not toxic. When substances decompose at high temperatures, toxic substances are released. The high temperatures mentioned here are generally 260 degrees or even above 350 degrees.

Safe Teflon must comply with national standards and must be used correctly to meet safety standards.

The melting point of Teflon is generally about 327 degrees. It can withstand 300 degrees in the short term. It is safer to maintain 260 degrees for long-term use. Generally, the temperature of our cooking is below 150 degrees, with a maximum of 200 degrees. The temperature can be completely limited to below 260 degrees and will not exceed the temperature that causes the decomposition of substances. Therefore, the possibility of Teflon decomposing harmful substances due to high temperature is very low, so there is no need to worry too much.

In this way, you may still feel uneasy. If you are still worried about the safety of non-stick pans, then let CCTV’s data give you a more accurate answer.

Because of the safety issues of non-stick pans, CCTV reported that the Beijing Agricultural College conducted experiments and placed Teflon in environments of 260 degrees and 350 degrees for decomposition. If the weight appears If it decreases, it means that Teflon has decomposed.

The test results show that the quality of Teflon does not change in a 260-degree environment. The weight of Teflon in a 360-degree environment is only 0.047g less. From here we can see , only when it reaches a certain high temperature will Teflon decompose harmful substances that affect health and cause emphysema and other diseases.

Zheng Yanying, associate professor of the Chemistry Teaching and Research Office of Beijing Agricultural University, also said: Generally, the temperature during cooking is below 260 degrees and will not exceed the unstable temperature of Teflon above 260 degrees, so it is suitable for daily use of non-stick pans. We don't have to worry about safety issues at all.

3. The coating of the non-stick pan has peeled off, can it still be used?

Non-stick pans are prone to the coating falling off after being used for a long time. At this time, everyone may have doubts about whether they can still be used. When we use non-stick pans safely, the properties of Teflon are relatively very stable, and the above test has also verified this problem.

When we usually use non-stick pans, even if the coating of the non-stick pans falls off, even if we accidentally eat a small amount of the coating, the fallen substances can still be excreted by the body. , and will not harm your health.

Although consuming a small amount of the peeling coating of a non-stick pan will not harm our health, there is still a certain risk to health if the coating of the non-stick pan peels off.

For example, when we are cooking, food easily sticks to it and becomes burnt. Not only is it difficult to clean during cleaning, but it also produces more harmful substances, such as polycyclic aromatic hydrocarbons. Such substances can increase the risk of nasopharyngeal cancer and lung cancer. If the coating of the non-stick pan at home has fallen off, it is not recommended to use it.

4. Keep 3 points in mind when using non-stick pans safely

Because it is easy to stick to the pan when cooking, non-stick pans came into being. Many people are worried about the problem of non-stick pans. The coating is harmful to the human body. In fact, there is no need to worry. As long as we safely use non-stick pans with national safety standards, it is very safe.

Although we will not decompose harmful substances when we use non-stick pans normally, there are still points that we need to pay attention to when using them. What are they specifically?

1. Be careful not to burn the pot dry

Although Teflon is relatively stable at high temperatures, you should also be careful not to dry the pot during use. When an empty pot is dry-heated for more than five minutes, the temperature in the pot will rise rapidly and reach an unstable temperature for Teflon, causing Teflon to decompose harmful substances and endanger our health.

2. Do not use hard objects to clean the non-stick pan.

Be gentle with the Teflon coating. Do not use hard objects such as iron products to clean the non-stick pan to avoid damaging the coating. Scratching, when cooking, try to use plastic or wooden spatulas to avoid scratching the surface coating of the non-stick pan.

3. Pay attention to timely replacement

The normal service life of a non-stick pan is about one or two years. If the non-stick pan has lost its non-stickiness, even if the pan is intact, It is not recommended to continue using it and replace it with a new one in time to ensure its safety performance and avoid health risks.

There are not a few people who choose to use non-stick pans in their lives. The characteristics of non-stick pans are also deeply loved by people and they are used frequently.

When purchasing, be sure to choose a non-stick pan that meets national safety standards. When cooking, be sure to use the non-stick pan normally to avoid damaging the surface coating of the non-stick pan.

Use non-stick pans safely and you don’t have to worry about cancer risks. Everyone must learn to identify rumors, believe in science, and live a healthy life.