Views: 0 Author: Site Editor Publish Time: 2024-09-10 Origin: Site
When comparing the fire resistance of magnesium oxide board and calcium silicate material, we can analyze from the following aspects:
1、 Fire rating
Magnesium oxide board: Magnesium oxide board usually has extremely high fire resistance, with a fire rating of A1, which is the highest level of fire resistance in building materials. It can maintain stability in high temperature environments and even have no flames at 1200 ℃, demonstrating excellent fire resistance.
Calcium silicate board: The fire rating of calcium silicate board is also divided into multiple levels, including A level, B1 level, and B2 level. Among them, A-grade calcium silicate board has extremely high fire resistance and can maintain structural integrity for a long time under fire conditions, effectively isolating flames and high temperatures. However, the fire resistance of B1 and B2 grade calcium silicate boards is relatively low. Although they can meet certain fire protection requirements, they are not as good as A-grade calcium silicate boards and magnesium oxide boards.
2、 High temperature performance
Magnesium oxide board: Magnesium oxide board can withstand extremely high temperatures, generally reaching over 1500 ℃ without losing its physical properties, which allows it to remain stable under extreme fire conditions.
Calcium silicate board: Although A-grade calcium silicate board also has good fire resistance, it may experience shrinkage problems in high temperature environments, and its high temperature resistance is slightly inferior to magnesium oxide board.
3、 Practical application
Magnesium oxide board: Due to its excellent fire resistance and various advantages such as waterproofing, moisture resistance, high strength and lightweight, magnesium oxide board is widely used in fields such as construction, furniture, electronics, especially in places that require high fire resistance, such as fire doors, firewalls, etc.
Calcium silicate board: Calcium silicate board is widely used in the field of construction due to its lightweight, high strength, and non flammability. However, when selecting calcium silicate board, it is necessary to choose the appropriate fire rating according to specific fire protection requirements.
In summary, from the perspective of fire rating and high temperature performance, the fire resistance of magnesium oxide board is usually better than that of calcium silicate board (especially calcium silicate board below grade A). However, in practical applications, suitable materials need to be selected based on specific needs, cost considerations, and fire safety regulations.
