How to classify the fire rating of interior decoration materials?

1, Grade A: non-combustible building materials, almost non-combustible materials. A 1 is nonflammable and cannot stand open fire.

2. Grade 2.A2: non-combustible, smoke measurement is required, and it must be qualified.

3.B 1 grade: flame retardant building materials: flame retardant materials have good flame retardant effect. It is not easy to catch fire in the air or under the action of high temperature, and it is not easy to spread quickly. The combustion will stop immediately after the fire source is removed. Include gypsum board, fiber gypsum board, cement particleboard, mineral wool board, glass wool board, perlite board, flame retardant plywood, flame retardant medium density fiberboard, flame retardant plastic decorative board, flame retardant double-sided particleboard, etc.

4. Class 4.B2: Combustible building materials: Combustible materials have a certain flame retardant effect. When exposed to open fire in the air or under the action of high temperature, it will catch fire immediately, which will easily lead to the spread of fire, such as various natural wood, wood-based panels, bamboo, paper decorative panels, decorative veneers, printed wood-based panels, plastic decorative panels, polyester decorative panels, plastic decorative panels, etc.

5. Class 5.B3: flammable building materials, which have no flame retardant effect, are extremely flammable and have great fire risk.

What are the fire boards for decoration?

1, cement board:

Cement board is a common fireproof board for decoration, which is usually used as ceiling and partition wall, but its fireproof performance is below the medium level. In the event of a large-scale fire, it is easy to burst, puncture and lose its protective effect. Cement board has the function of heat insulation and sound insulation. The fiber-reinforced cement board appearing on the market now has higher strength and fire resistance through the improvement of science and technology.

2, calcium silicate board:

Calcium silicate board is a relatively new type of fire-proof board, which is mainly made of silica materials such as quartz powder and pulverized coal and calcium materials such as lime and cement. High strength, good durability, light weight and convenient construction. However, calcium silicate board has poor bending performance and cannot be made into various shapes.

3, fire gypsum board:

Flame-retardant gypsum board has good fire resistance, its main components are not easy to burn and contain crystal water, so it is widely used in partition walls, ceilings and other places. Fireproof gypsum board is light in weight, easy to process and decorative. In recent years, new varieties such as calcium silicate gypsum fiberboard and double-sided gypsum fireproof board are outstanding and deeply loved by consumers.

4, mineral wool board:

Mineral wool board is mainly made of mineral wool and glass wool, which has the advantage of high temperature resistance, but its strength is poor and its decorative effect is not obvious, so it is not widely used.