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Nonstick standard interpretation

Time:2021-09-14 00:00:00

1. Appearance quality

The standard requires that the non-stick coating in the pot should be smooth, the color, hiding power, and gloss should be basically uniform, without bubbles, and no shedding. It also requires that the coating should be completely hot-melted and free of obvious defects such as dirt, cracks and explosion points.

2. Handle load strength

The standard requirement for double-handle pot is W=1/2W1+3/2W2, and for single-handle pot is W=W1+3W2 (Note: W=load force, Wl=self-weight of specimen, W2=maximum capacity of specimen Water gravity.) After the test, the handle bracket is not loose, not deformed, and the handle has no cracks.

Third, the thickness of the base material

The base material of the product should be made of aluminum and aluminum alloy materials that can meet the performance requirements of the product. The minimum thickness of the base material of the frying pan and wok is 2.0mm and 2.5mm, respectively; the minimum thickness of the base material of the boiling pan and the milk pan is 1.6mm and 1.8mm, respectively. There are two considerations for specifying the thickness of the substrate material: one is to consider the product to have a certain strength; the other is to protect the non-stick coating. If 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 be reduced, 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 non-stick coating and shorten the service life of the non-stick pan.

Fourth, the thickness of non-stick coating

The standard requires that the average thickness of the frying pan and wok is greater than or equal to 25 microns; the average thickness of the boiling pan and the milk pan is greater than or equal to 20 microns. This is an important indicator of non-stick pan, which will affect the service life and performance of non-stick pan.

Five, adhesion fastness

standard regulation:

1. Immerse the sample in boiling water for 15 minutes and take it out. After it has cooled to room temperature, wipe it dry with a soft cloth.

2. Use the tip of a sharp single-sided blade and a steel ruler or a special grid template to score 11 parallel scratches with a distance of 2.4mm and a length of 38mm on the coating, and then repeat the above steps along the direction perpendicular to the scratches. The tip of the tool must penetrate the coating to the metal.

3. Use a single-sided transparent pressure-sensitive adhesive tape to adhere to the scratch area, and the tape sticking direction is parallel to a set of scratch lines. Rub the tape with your fingernails to expel the air in the adhesive area of the tape and make it adhere to the coating to the greatest extent.

4. Pull one end of the tape with your fingers, and quickly pull it up at a right angle of 90°C for 3 times in a row, each time you need to use a new tape.

5. Rotate the scratch at 90°C and repeat steps 3 and 4 with a new tape. After the test, the coating in the grid area does not fall off completely. This test is mainly to prevent the coating from falling off, thereby affecting the non-stick effect.

Six, scratch resistance

This is an index to test the ability of the coating to resist scratches by various hard substances and the hardness, degree of curing and adhesion of the coating itself.

Seven, non-sticky

Non-stickiness is an important indicator of non-stick pan, which relates to the performance of the coating itself and the curing quality of the coating. According to the standard, wipe the surface of the non-stick coating with a soft cloth with vegetable oil, wash it with warm water and detergent, then wash it with water, dry it, and perform an omelette test to identify the non-stick pan non-sticky Pros and cons.