Flame-retardant plywood, also known as flame-retardant board, as the name suggests is a more flame-resistant plate, although not many people understand. However, in our life, the use of fire retardant panels is still very extensive, but the use of 90 percent of fire retardant panels is limited to commercial real estate purposes, but now the interior decoration of many high-end communities, villas, and high-rise buildings are also Use fire retardant plywood. The following millennium boat plate Xiao Bian for everyone to introduce the relevant knowledge, and how to identify flame retardant board?
First, what is a flame retardant board?
Flame-retardant board (also known as flame-retardant board, fire-retardant plywood), flame-retardant plywood is rotated from the log into wood chips or wood planed into small wooden squares, the wood chips after the flame-retardant treatment and then glued together three Layers or layers of plywood, usually odd-numbered wood chips, and the adjacent layers of wood fibers from the vertical direction of the glue. Fire-retardant material boards produced from wood as the main raw material can substantially overcome the defects of wood due to its reasonable structure and fine processing of the production process, thereby greatly improving and improving the physical and mechanical properties of the wood, in addition to overcoming the common The disadvantage of plywood flammability has effectively improved the flame retardancy of plywood. Millennium boat flame retardant board at the same time with the flame retardant, smoke suppression, anti-corrosion, insect resistance and stability of the five characteristics, it can be said to have a strong practicality. Maintains the excellent physics performance, processing performance and decorative functions of traditional wood-based panels, and is widely used in hotels, hotels, convention centers, convention centers, sports centers, libraries, transportation passenger transportation centers, leisure and entertainment venues, shopping malls, medical institutions, and offices. Office building and other decoration projects, high-end residential construction and renovation projects and high-end furniture manufacturing projects
Flame retardant plywood size specifications:
The specifications of the artificial plate are generally: 2440mm (length) x 1220mm (width) x thickness. The thickness of the fire retardant board is generally the same as that of the plywood, but the type is not so. The common ones are 9mm, 12mm, 15mm, 16mm and 18mm.
Second, how to identify fire-retardant board:
Flame retardant board how to distinguish between good and bad? Suggest one touch, two burns, three shakes, four bubbles, five smells.
One touch is whether the surface of the board is smooth or not.
The second burning is to use a blade to cut a small strip, use a lighter to burn, observe the extinguishing time, see if there is no dark flame, and can be compared with the ordinary board.
The three tricks are to use a nail to pick up the board and feel hard or soft. Then use a fingernail to stand on the surface near the board to see if the surface is easily peeled off.
Four bubbles, is to put a small sample into cold water for 24 hours and observe how much the thickness increases. This one is the most critical of the five news, that is, a few flame retardant plates together smell the edge of the plate, smelling whether it has a pungent taste, if there is a description of high formaldehyde emission, poor environmental performance, it is not recommended to buy.
Third, the flame retardant board fire rating introduction First of all we have to make it clear that the flame retardant board fire rating can be divided into four levels. At present, the flame retardant board grades on the market mainly include: A1, A2, B, C four grades, according to GB8624-1997 "comprehensive combustion performance of building materials and products", is divided into: Class A non-combustible materials: Class A homogeneous material And Class A composite (sandwich) materials; Class B combustible materials: B1 material and B2 material and B3 material. According to GB8624-2006 "Building materials and products combustion performance rating" is divided into: A1 level, A2 level, B level, C level, D level, E level, F level. The standard Class B1 flame retardant plate in 1997 can correspond to the standard 2006 Grade B and C flame retardant plates. However, the most common fire-retardant panels in the sheet metal market basically belong to the Class B fire rating. The wood used for the fire retardant board is a fire-retardant wood, the flame-retardant phenolic plywood, the flame-retardant medium density fiberboard, and the flame-retardant plywood all refer to the fire-retardant board. .
GB 8624-2006 Test requirements for Class B and C combustion performance of building products (other than floor covering materials):
1. The flammability test (GB/T 8626), in the case of flame bombardment of the specimen for 30 s (and if necessary flame bombardment of the edge of the specimen, see 6.3), the vertical distance between the flame propagation and the ignition point within 60 s does not exceed ( Class C and B are the same).
2. The monomer burning test (GB/T 20284) evaluates the effect of the product itself on the fire in a fire scene where there is a single source of combustion near the simulated product in the corner of the room. There are three specific indicators, namely: A. Flame lateral spread (LFS) shall not reach the edge of the sample (C, B with the same). B. FIGRA 0.4MJ total heat release. The threshold value for combustion is 0.4MJ and the growth rate of the index C is ≤ 250 W/S, and B is ≤ 120 W/S. C.THR600S (total heat release at 600 s) Class C ≤ 15 MJ, Class B ≤ 7.5 MJ.
Third, the type of fire-retardant plywood In accordance with the fire-retardant board's water, moisture-proof performance, the flame-retardant board is divided into the following four categories:
One type of flame retardant board is a weather resistant, boiling water resistant flame retardant plywood, and thus has the advantages of durability, high temperature resistance, and steam treatment.
The second type of flame retardant board is a water-resistant flame retardant board that can be impregnated in cold water and impregnated with hot water for a short time.
The three types of flame-retardant panels are moisture-resistant and flame-retardant panels that can be impregnated in cold water for a short period of time and are suitable for use at room temperature. Used for furniture and general construction purposes.
The four types of flame-retardant panels are non-damp-resistant and flame-retardant panels. They are used under normal indoor conditions. They are mainly used for antimony and general-purpose fire-retardant panels. There are wood, Ash, birch, beech, poplar and others.
First, what is a flame retardant board?
Flame-retardant board (also known as flame-retardant board, fire-retardant plywood), flame-retardant plywood is rotated from the log into wood chips or wood planed into small wooden squares, the wood chips after the flame-retardant treatment and then glued together three Layers or layers of plywood, usually odd-numbered wood chips, and the adjacent layers of wood fibers from the vertical direction of the glue. Fire-retardant material boards produced from wood as the main raw material can substantially overcome the defects of wood due to its reasonable structure and fine processing of the production process, thereby greatly improving and improving the physical and mechanical properties of the wood, in addition to overcoming the common The disadvantage of plywood flammability has effectively improved the flame retardancy of plywood. Millennium boat flame retardant board at the same time with the flame retardant, smoke suppression, anti-corrosion, insect resistance and stability of the five characteristics, it can be said to have a strong practicality. Maintains the excellent physics performance, processing performance and decorative functions of traditional wood-based panels, and is widely used in hotels, hotels, convention centers, convention centers, sports centers, libraries, transportation passenger transportation centers, leisure and entertainment venues, shopping malls, medical institutions, and offices. Office building and other decoration projects, high-end residential construction and renovation projects and high-end furniture manufacturing projects
Flame retardant plywood size specifications:
The specifications of the artificial plate are generally: 2440mm (length) x 1220mm (width) x thickness. The thickness of the fire retardant board is generally the same as that of the plywood, but the type is not so. The common ones are 9mm, 12mm, 15mm, 16mm and 18mm.
Second, how to identify fire-retardant board:
Flame retardant board how to distinguish between good and bad? Suggest one touch, two burns, three shakes, four bubbles, five smells.
One touch is whether the surface of the board is smooth or not.
The second burning is to use a blade to cut a small strip, use a lighter to burn, observe the extinguishing time, see if there is no dark flame, and can be compared with the ordinary board.
The three tricks are to use a nail to pick up the board and feel hard or soft. Then use a fingernail to stand on the surface near the board to see if the surface is easily peeled off.
Four bubbles, is to put a small sample into cold water for 24 hours and observe how much the thickness increases. This one is the most critical of the five news, that is, a few flame retardant plates together smell the edge of the plate, smelling whether it has a pungent taste, if there is a description of high formaldehyde emission, poor environmental performance, it is not recommended to buy.
Third, the flame retardant board fire rating introduction First of all we have to make it clear that the flame retardant board fire rating can be divided into four levels. At present, the flame retardant board grades on the market mainly include: A1, A2, B, C four grades, according to GB8624-1997 "comprehensive combustion performance of building materials and products", is divided into: Class A non-combustible materials: Class A homogeneous material And Class A composite (sandwich) materials; Class B combustible materials: B1 material and B2 material and B3 material. According to GB8624-2006 "Building materials and products combustion performance rating" is divided into: A1 level, A2 level, B level, C level, D level, E level, F level. The standard Class B1 flame retardant plate in 1997 can correspond to the standard 2006 Grade B and C flame retardant plates. However, the most common fire-retardant panels in the sheet metal market basically belong to the Class B fire rating. The wood used for the fire retardant board is a fire-retardant wood, the flame-retardant phenolic plywood, the flame-retardant medium density fiberboard, and the flame-retardant plywood all refer to the fire-retardant board. .
GB 8624-2006 Test requirements for Class B and C combustion performance of building products (other than floor covering materials):
1. The flammability test (GB/T 8626), in the case of flame bombardment of the specimen for 30 s (and if necessary flame bombardment of the edge of the specimen, see 6.3), the vertical distance between the flame propagation and the ignition point within 60 s does not exceed ( Class C and B are the same).
2. The monomer burning test (GB/T 20284) evaluates the effect of the product itself on the fire in a fire scene where there is a single source of combustion near the simulated product in the corner of the room. There are three specific indicators, namely: A. Flame lateral spread (LFS) shall not reach the edge of the sample (C, B with the same). B. FIGRA 0.4MJ total heat release. The threshold value for combustion is 0.4MJ and the growth rate of the index C is ≤ 250 W/S, and B is ≤ 120 W/S. C.THR600S (total heat release at 600 s) Class C ≤ 15 MJ, Class B ≤ 7.5 MJ.
Third, the type of fire-retardant plywood In accordance with the fire-retardant board's water, moisture-proof performance, the flame-retardant board is divided into the following four categories:
One type of flame retardant board is a weather resistant, boiling water resistant flame retardant plywood, and thus has the advantages of durability, high temperature resistance, and steam treatment.
The second type of flame retardant board is a water-resistant flame retardant board that can be impregnated in cold water and impregnated with hot water for a short time.
The three types of flame-retardant panels are moisture-resistant and flame-retardant panels that can be impregnated in cold water for a short period of time and are suitable for use at room temperature. Used for furniture and general construction purposes.
The four types of flame-retardant panels are non-damp-resistant and flame-retardant panels. They are used under normal indoor conditions. They are mainly used for antimony and general-purpose fire-retardant panels. There are wood, Ash, birch, beech, poplar and others.
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