Classification and Characteristics of Fiber Cement Board
1. According to the inside fibers: At present, most of the domestic use of asbestos fibers to enhance the role of this kind of fiber cement board is called chrysotile fiber cement plate; the other kind is non-asbestos fiber, with pulp, wood chips, glass fibers to replace asbestos fibers to enhance the role of the general term asbestos-free fiber cement plate. 。
2. According to density: low density 0.9-1.2g/cm3, medium density 1.2-1.5g/cm3, high density 1.5-2.0g/cm3. Low density is generally used in low-grade building ceiling partition wall and other parts, medium density is generally used in middle-grade building partition ceiling, high density is generally used in high-grade building steel structure exterior wall, steel structure floor, etc. According to the national construction industry standards, it can be divided into two categories. High density fiberboard is easy to deform because of its shortcomings, and the deformability coefficient of medium and low density products is a little smaller.
3. Pressure: Pressure plate and pressure plate. Medium and low density fibre reinforced cement boards are all non-compressive boards, while high density fibre reinforced cement boards are pressure boards. Pressure plate, also known as fibre cement pressure plate, needs special press production, which can not be done by enterprises without press. According to the density, the fibre cement pressure board can be divided into: 1) ordinary board, density 1.5-1.75g/cm3; 2) superior board, density 1.75-1.95g/cm3; 3) superior board, density 1.95g/cm3 or more.
4. According to thickness: 1) ultra-thin plate, 2.5-3.5 mm; 2) conventional plate, 4-12 mm; 3) thick plate, 13-30 mm; 4) ultra-thick plate, 31-100 mm. General manufacturers can not make ultra-thin and ultra-thick plates, which is also an important basis for measuring the production capacity and technical level of enterprises in the industry.
National Industry Standards:
JC/T412.1-2006 asbestos-free cement slab, JC/T412.2-2006 chrysotile asbestos fiber cement slab.
Fire-proof insulation: non-flammable A class, when fire occurs, the board will not burn, will not produce toxic smoke; low conductivity, is the ideal insulation material.
Waterproof and moisture-proof: In semi-open air and high humidity environment, it can still maintain the stability of performance, and will not sink or deform.
Heat insulation and sound insulation: low thermal conductivity, good thermal insulation performance, high product density, sound insulation.
Light weight and high strength: Plates pressurized by 5000 tons flat-plate hydraulic press are not only of high strength, but also not easy to deform and warp. Small weight is suitable for roof suspension and other aspects.
Simple construction: Dry operation mode, simple installation and construction of keel and plate, fast speed. Deep-processed products also have the characteristics of simple construction and better performance.
Economically beautiful: light weight, with the cooperation of keel, effectively reduce the cost of engineering and repair; uniform appearance, smooth surface, direct use can make the building surface color uniform.
Safety and harmlessness: It is lower than the national radiation protection standard for building materials, and the measured index is equal to the lawn value 20 meters away from the surrounding buildings.
Over-long life: acid and alkali resistance, corrosion resistance, not damaging by moisture or insect ants, and strength and hardness increase with time to ensure a long service life.
Good machinability and secondary decoration performance: Sawing, drilling, carving, drilling nails, painting, sticking ceramic tile, wall cloth and other materials according to the actual situation.