Colour coated gi sheet

The physical barrier of colour coated gi sheet is mainly reflected in its surface structure and composition. The following is a detailed explanation of the physical barrier of colour coated gi sheet:

1、 The composition of physical barriers

The physical barrier of colour coated gi sheet mainly consists of the following parts:
1. Galvanized layer: The galvanized layer is the first line of defense for colour coated gi sheets, which tightly adheres to the steel plate substrate, forming a dense metal protective layer. This galvanized layer can effectively isolate oxygen and moisture in the air, thereby protecting the steel plate substrate from corrosion.

2. Color coating: On top of the galvanized layer, the colour coated gi sheet is also coated with an organic coating. After baking and curing, this coating forms a hard and beautiful color coating. The colored coating not only endows the steel plate with rich colors and patterns, but also further enhances its physical barrier effect, improving its corrosion resistance and weather resistance.

2、 The mechanism of action of physical barriers

The physical barrier mechanism of colour coated gi sheet is mainly reflected in the following aspects:

1. Isolation function: The galvanized layer and colored coating together form a dense barrier, isolating the steel plate substrate from corrosive substances such as oxygen and moisture in the air, thereby slowing down or preventing the corrosion of the steel plate.

2. Protective function: The galvanized layer has high hardness and adhesion, which can resist external mechanical impact and wear, and protect the colored coating and steel plate substrate from damage. At the same time, colored coatings also have certain toughness and weather resistance, which can resist the erosion of natural factors such as ultraviolet rays and wind and rain.

3. Self healing effect: When the surface of colour coated gi sheet is slightly damaged, the zinc in the galvanized layer will quickly react with oxygen in the air to form a dense zinc oxide protective film, thereby preventing further corrosion development. This self-healing cooperation enables colour coated gi sheets to maintain good rust resistance even when damaged.

3、 The application advantages of physical barriers

The physical barrier of colour coated gi sheet has the following advantages in practical applications:
1. Improve corrosion resistance: By isolating corrosive substances such as air and moisture, colour coated gi sheets can significantly improve their corrosion resistance and extend their service life.
2. Enhance aesthetics: Color coating endows steel plates with rich color and pattern choices, making colour coated gi sheets widely applicable in fields such as construction and home appliances.
3. Reduce maintenance costs: Due to the excellent rust prevention and weather resistance of colour coated gi sheets, maintenance costs during use can be reduced.
In summary, the physical barrier of colour coated gi sheet is mainly composed of galvanized layer and color coating, which together form a dense barrier that can effectively isolate corrosive substances such as oxygen and moisture in the air, and protect the steel sheet substrate from corrosion. At the same time, colour coated gi sheets also have excellent aesthetic and weather resistance characteristics, and have broad application prospects in practical applications.