Fireproof gypsum board is based on the traditional paper gypsum board on the basis of innovation and development of a new product, not only has a paper gypsum board noise, insulation, insulation, light, high strength, low shrinkage characteristics, but also in Gypsum board plate core to add some additives (glass fiber), making the plate in the event of fire, in a certain period of time to maintain the integrity of the structure (in the building structure), which play a role in blocking the flame spread.
Principle of fire protection for fireproof gypsum board
Gypsum board fire principle is the gypsum board plate core:
First: CaSO4.2H2O, do not underestimate the two crystal water Oh, gypsum board crystal water is an important reason for its fire. Gypsum board by fire, first in the core of the free water evaporate out, absorb a small amount of heat, reduce the temperature of the plate weeks. When the temperature continues to rise, dihydrate gypsum crystal water from the start, broken down into gypsum and water, the process needs to absorb a lot of heat, can be in a long time to affect the temperature around the board surface.
Second: the main cause of gypsum board fire failure is dihydrate gypsum off the crystal water after the volume shrinkage and loss of the overall become a powder, in order to improve the fire resistance of gypsum board, gypsum board core must add some additives.
Refractory gypsum board to increase the fire in the expansion of refractory materials and a large number of refractory glass fiber, so that the gypsum can shrink while maintaining the overall volume of the same, and the gypsum core material together do not lose the integrity The
There are many types of gypsum board, China's current production of gypsum board mainly decorative gypsum board, gypsum plaster board, fiber gypsum board, fire gypsum board, waterproof gypsum board and plaster hollow slab and so on.