There are many kinds of non-stick pans. Teflon is the main coating material of non-stick pan in the market, but all of them are coated with non-stick coating, so now everyone will be very cautious when purchasing. The following describes how to identify the coating quality of non-stick pan.
How to identify the coating quality in non-stick pan? 1 non-stick pan ranking?
1. ASD Group Co., Ltd. is a large regional-free enterprise group with Zhejiang ASD Electric Appliance Co., Ltd. and Shanghai ASD Auto Parts Co., Ltd. as its core holding subsidiaries. Founded in 1978, it mainly focuses on industrial investment, involving cookware, small kitchen appliances, auto parts and other related businesses. The registered capital of the company is/kloc-0.28 billion yuan, covering an area of 800,000 square meters and employing 6,000 people. In 2007, the sales revenue reached 2 billion yuan.
2. Zhejiang ASD Electric Appliance Co., Ltd., a subsidiary of ASD Group, was established in 1978. It is one of the top ten brands of kitchenware and a famous trademark in Zhejiang Province. Mainly engaged in research and development, design, production and sales of series kitchen utensils and small household appliances.
Three, pressure cooker-the top ten brands of tableware, all products of Germany Fishler have passed the European certification standards. The excellent quality and simple and elegant design of the products make Fishler have many users and collectors all over the world. 1845, founded in Germany, is a world-famous cooker manufacturer, a large multinational enterprise group and an advocate of healthy kitchen life. 1845, founded in Fishler, Germany, is one of the world famous manufacturers of cookware.
4./kloc-for more than 70 years, Fishler has been committed to developing and manufacturing high-quality cookware and cookware, and has won many patents and awards. In the 1980s, it used fully automated production lines, and now it is one of the few cookware enterprises capable of sticking to most products made in Germany, and it is also the leading brand in the high-end cookware industry.
5. A well-known brand of smokeless/non-stick pan, founded in 1983, is a brand specializing in the research, development, production and sales of healthy cookware and electrical appliances. Zhejiang Cuidawang Cookware Co., Ltd., located in Yongkang, Zhejiang, the hardware capital of China, was founded in 1983. It is a company specializing in the research, development and production of healthy cookware and electrical appliances.
The intransitive verb company has maintained a healthy, stable and rapid development and formed a modern enterprise management framework. The company continues to expand in the field of healthy cookware, and new products emerge one after another. The main products include selenium wok, healthy wok, healthy smokeless wok and medical stone Tao Jing wok. Nano Tao Jing smokeless pan, diamond wok, drilling wok, multi-layer steel smokeless pan, wonderful wok and other 9 series with more than 200 models.
How to identify the quality of non-stick pan?
First, the choice of non-stick pan coating, non-stick pan coating has five generations of history from creation to now: the first product is Teflon; The second generation is Teflon with improved functions; The third generation is called Silverstone; The fourth generation is super silverstone; The fifth generation is "handwritten". Generally speaking, if the production is normal, the new generation coatings have better functions than the old generation coatings.
Second, the choice of pot materials, non-stick pot materials are iron, aluminum, stainless steel, alloy steel. Iron products include pig iron and wrought iron. The finished pig iron forging is thick and heavy, but it has large heat capacity and is not easy to overheat; Wrought iron products are thin and have small heat capacity.
Third, both of them are easy to rust and be corroded by acid and alkali, so their life span is short. The finished aluminum product has the advantages of light weight and fast heat conduction, but the disadvantage is that it will react chemically with food with strong acidity and alkalinity, thus shortening the service life, and its oxidation products make people feel unclean.
Fourthly, stainless steel products have the advantages of acid and alkali resistance, non-corrosion, high temperature resistance, non-oxidation and long service life, but the price is more expensive. The finished alloy also has the function of stainless steel, but the price is higher, and some elements in it are not good for health.
5. The pot is non-sticky and easy to clean. A simple non-stick experiment can be done to test whether the non-stick pan is qualified: when the non-stick pan is burned to 1500C to 1700C, put fresh eggs in the pan, turn over the pan without oil, and if the eggs can fall freely, it is qualified; Otherwise, the non-stick pan failed. When consumers buy non-stick pan products, they should first check the surface quality of the coating. The coating surface should be uniform in color and luster, with no exposed matrix.
Six, see whether the coating is continuous, that is, there is no mud crack. It is to gently peel off the edge coating of the pot with nails, and there should be no massive coating falling off, indicating that the coating has good adhesion with the substrate.
Fourthly, the surface of the coating film should be lightly scraped with nails, and there should be no deep groove marks on the surface of the coating film, indicating that the surface hardness of the coating film is better. Fifth, pour a few drops of water into the non-stick pan. If the water drops can flow on the lotus leaf like beads, and there is no trace of water after the water drops flow, it means that it is really a non-stick pan, otherwise it is a fake non-stick pan made of other materials.
Seven. Protective measures 1. Wash and dry the new pot first, and apply a thin layer of oil on the pot surface to improve its non-stick function. When using, it is not suitable for fire, otherwise it is easy to form a non-stick coating. Fire should not come out from the bottom of the pot.
Eight, after use, it is necessary to clean and decontaminate in real time, but it must be cleaned with water (or detergent) after the pot temperature is lowered, and gently wiped with sponge or soft cloth. It is not advisable to use rough things or iron brushes for cleaning, so as to avoid scratches and damage caused by non-stick paint.
How to identify the advantages and disadvantages of non-stick pan inner coating? Is the coating in the non-stick pan toxic?
At present, the coating of non-stick pan is divided into Teflon and ceramic coating. Teflon coating is mainly fluoropolymer, which has the characteristics of chemical corrosion resistance and aging resistance. Ceramic coating, the main component is silicon dioxide. Silicon dioxide is a natural inorganic product, which is used in the inner wall of cookware. The fineness and softness of the material can reach the nanometer level and will not produce toxic substances.
Many studies on polymer coating of non-stick pan show that it may release trace perfluorocompounds at high temperature, but it is unlikely to release them during cooking. For example, boiling with salt water and clear water for two hours, or heating with soybean oil to 280℃, no typical perfluorinated compounds were found. Generally speaking, with the increase of application times, less and less perfluorocompounds will be released from the non-stick coating. As long as high-temperature dry burning is avoided, the safety of non-stick coated appliances is guaranteed.
How to choose a non-stick pan
The non-stick pan is made of iron, aluminum, stainless steel and alloy steel.
1, iron products are pig iron and wrought iron. Pig iron products are cast, thick and heavy, but have large heat capacity and are not easy to overheat; Wrought iron products are thin and have small heat capacity. Both of them are easy to rust and are corroded by acid and alkali, so their life span is short.
2. The advantage of aluminum products is light weight and fast heat conduction, but the disadvantage is that they will react chemically with food with strong acidity and alkalinity, thus shortening the service life, and its oxidation products make people feel unclean.
3. Stainless steel products have the advantages of acid and alkali resistance, corrosion resistance, high temperature resistance, difficult oxidation and long service life, but the price is more expensive.
4. Alloy products generally have the properties of stainless steel, but the price is higher, and some elements are harmful to health.
What is a qualified non-stick pan?
1, appearance quality
The standard requires that the non-stick coating in the pot should be smooth, with uniform color, hiding power and luster, no bubbles and no shedding. It is also required that the coating should be completely hot-melted, without obvious defects such as dirt, cracks and explosion points.
2, the handle load strength
The standard requirements are double-handle boiler W= 1/2W 1+3/2W2, and single-handle boiler W=W 1+3W2 (note: W= load force, Wl= self-weight of specimen, W2= maximum water-holding gravity of specimen. ) After the test, the handle bracket has no looseness or deformation, and the handle has no cracks.
3. Thickness of matrix material
The matrix material of the product should be aluminum and aluminum alloy materials that can meet the performance requirements of the product. The minimum thickness of the substrate of the wok and frying pan is 2.0mm and 2.5mm respectively, and the minimum thickness of the substrate of the boiling pan and milk pan is 1.6 mm and 1.8 mm respectively. There are two considerations in specifying the thickness of the matrix material: one is to consider that the product has a certain strength; The second is to protect the non-stick coating.
When a non-stick pan is used on a gas stove, if the base material is thin, the lateral heat conduction area of the metal at the bottom of the pan will decrease, resulting in uneven heat distribution and hot spots. If these hot spots exceed the tolerance of the coating, it will cause permanent damage to the coating of the non-stick pan and shorten the service life of the non-stick pan.
4, non-stick coating thickness
The standard requires that the average thickness of frying pan and frying pan is greater than or equal to 25 microns; The average thickness of the boiling pot and the milk pot is greater than or equal to 20 microns. This is an important index of non-stick pan, which will affect the service life and performance of non-stick pan.
5. Scratch resistance
This is an index to test the ability of the coating to resist various hard substances and the hardness, curing degree and adhesion of the coating itself.
6. Non-stick
Non-stickiness is an important index of non-stick pan, which is related to the performance of coating itself and the curing quality of coating. According to the standard, gently wipe the surface of the non-stick coating with a soft cloth stained with vegetable oil, clean it with warm water and detergent, and then clean it with clear water. After drying, the test of frying eggs was carried out to determine the advantages and disadvantages of non-stick pan.