Gypsum board is definitely familiar to everyone and is a commonly used material for decoration. Today, the editor will talk about how to distinguish the quality of gypsum board and the selection techniques for gypsum board.
Advantages of gypsum board
Because gypsum board has many advantages such as light weight, high strength, sound insulation, fire prevention, and insulation, it is often used in home decoration. However, currently there are good and bad gypsum boards in the market, and how to distinguish between good and bad is a problem.
How to distinguish the quality of gypsum board
1. Distinguish from protective paper
Due to the fact that the quality and strength of gypsum board mainly depend on the protective paper. The high-quality protective paper is made of imported pulp fibers. This type of paper has high strength, is light and thin, has a smooth surface, is free from stains, and looks very beautiful. However, the surface of poor gypsum boards is rough, uneven, and there are also stains, and their strength is poor, making them prone to brittle cracking.
2. Distinguish from gypsum core
Good gypsum boards generally use high-purity gypsum as the raw material for gypsum cores. From the surface color, it can be seen that good gypsum board cores are white, while poor gypsum board cores are dull and yellow in color. Poor quality gypsum boards do not have strict control over the selection of raw materials, so their purity is not sufficient. The low-purity gypsum mine, Zhihong, contains a large amount of harmful substances that not only affect the performance of gypsum boards, but also have adverse effects on human health.
3. Distinguish from paper bonding
We can also personally test the difference between good and bad gypsum boards. Good gypsum boards have better adhesion to the paper surface, while poor gypsum boards have poorer adhesion to the paper surface. We can use a Paper Cuttings knife to draw a 45 degree "fork" on the surface of the gypsum board, and then uncover the paper at the intersection. We can see that the high-quality paper gypsum board is still well bonded to the gypsum core, and the gypsum core will not be exposed. But low-quality gypsum board paper can easily be torn off the gypsum core, exposing it.
4. Differences in weight per unit area
The weight of gypsum board has certain requirements, and the lighter the weight of gypsum board, the better, provided that the strength meets the requirements. Because high-quality gypsum boards of the same thickness are lighter in quality. This is caused by different production processes and levels. Poor quality gypsum boards are generally produced in factories with outdated equipment and outdated processes, which inevitably leads to a decrease in their strength in order to maintain the weight of gypsum boards within the set value. If the specified strength is to be achieved, it is necessary to increase weight. So generally, low-quality gypsum boards have a heavier weight per unit area.
The above is all about how to distinguish the quality of gypsum boards and the selection techniques for gypsum boards. I hope it will be helpful to you!
