Flame retardant plate

                                                                          Flame retardant plate

structure
The fire-retardant board is produced with wood as the main raw material. Due to the rationality of its structure and the fine processing in the production process, it can generally overcome the defects of wood and improve the physical and mechanical properties of wood. At the same time, the fire-retardant plywood also overcomes the shortcomings of ordinary plywood, which is easy to burn, and effectively improves the fire-retardant performance of plywood. The production of fire-retardant board is an important method to make full and reasonable use of wood and improve wood properties.
classification
Classification of fire-retardant board one kind of fire-retardant board is climate resistant, boiling water-resistant and fire-resistant plywood, which has the advantages of durability, high temperature resistance and steam treatment. Class II flame-retardant board is water-resistant flame-retardant board, which can be soaked in cold water and hot water for a short time. Class III flame-retardant board is moisture-resistant flame-retardant board, which can be soaked in cold water for a short time, and is suitable for indoor use at room temperature. For furniture and general construction purposes. The four types of flame-retardant boards are non moisture resistant flame-retardant boards, which are mainly used for food and general purposes under normal indoor conditions. The materials of flame-retardant boards include basswood, Manchurian ash, birch, elm, poplar, etc.
case
Decorative wood chip veneered flame retardant board
1) Decorative wood chip veneered flame retardant board is a man-made board made of natural wood decorative wood chips pasted on the flame retardant board. Decorative wood chips are thin wood chips made of high-quality wood by planing or rotary cutting.
2) Characteristics of decorative wood veneer flame retardant board: decorative wood veneer flame retardant board is one of the most commonly used materials for indoor decoration. Because the decorative wood chips on the surface of the product are made of high-quality wood by planing or rotary cutting, it has better decorative performance than flame retardant board. This product is natural, simple, natural and noble, which can create the best friendly and elegant living environment with people.
3) Types of decorative wood chip veneered flame retardant board: decorative wood chip veneered flame retardant board can be divided into single-sided decorative wood chip veneered flame retardant board and double-sided decorative wood chip veneered flame retardant board according to the decorative surface; According to the water resistance, it can be divided into class I decorative wood chip veneered flame retardant board, class II decorative wood chip veneered flame retardant board and class III decorative wood chip veneered flame retardant board; According to the texture of decorative wood chips, it can be divided into radial decorative wood chip veneered flame retardant board and chord decorative wood chip veneered flame retardant board. One side decorative wood chip faced flame retardant board is common. The commonly used wood species for decorative wood chips are birch, Fraxinus mandshurica, oak, shuiqinggang, elm, maple, walnut, etc.
4) Grading of decorative wood chip veneered flame retardant board: according to the standard of decorative wood chip veneered flame retardant board in China, decorative wood chip veneered flame retardant board is divided into three grades: excellent product, first-class product and qualified product. It is hereby reminded that other grading forms of manufacturers and consumers are not in line with China's decorative wood veneer flame retardant board standards. For example, some manufacturers' logo grade is "AAA", which is a corporate behavior.
technical standard
The performance requirements of national standards for decorative wood chip faced flame retardant board:
The current recommended standard in China is gb/t 15104-2006 decorative wood chip veneered wood-based panels, which is implemented by most enterprises. This standard stipulates the indexes of decorative wood chip faced flame-retardant board in three aspects: appearance quality, processing accuracy and physical and mechanical properties. Its physical and mechanical properties include: moisture content, surface bonding strength, immersion stripping. GB 18580-2001 "formaldehyde emission limits of wood-based panels and their products for interior decoration materials" also stipulates the formaldehyde emission limit index of the product. ① The national standard stipulates that the moisture content index of decorative wood chip faced flame retardant board is 6% - 14%. ② The surface bonding strength reflects the bonding strength between the decorative wood chip layer and the base material of the flame retardant board. The national standard stipulates that this index should be ≥ 50MPa, and the number of qualified samples should be ≥ 80%. If this index is unqualified, it indicates that the bonding quality of decorative wood chips and base material flame-retardant board is poor, which may cause the opening and bulging of decorative wood chips in use. ③ Impregnation stripping reflects the bonding performance of each bonding layer of decorative wood veneered flame-retardant plywood. The unqualified index indicates that the bonding quality of the plate is poor, which may cause glue opening in use. ④ Formaldehyde emission limit. This index is a compulsory national standard implemented in China since January 1st, 2002, which is the "birth certificate" of relevant products. Products that fail to meet this standard are not allowed to be produced since January 1st, 2002; This is also the "market access certificate" of relevant products. Products that fail to meet this standard are not allowed to enter the market circulation field from July 1, 2002. Formaldehyde exceeding the limit will affect the health of consumers. The standard stipulates that the formaldehyde emission of decorative wood chip faced flame-retardant board should reach: E0 ≤ 0.5mg/l, E1 ≤ 1.5mg/l, E2 ≤ 5.0mg/l.
Excellent product performance of the company's fire-retardant plywood: ① excellent fire-retardant performance: Grade B in GB8624-2006 "classification of flammability of building materials and products" gb/t8625-2005 "test methods for fire retardancy of building materials". ② the release of free formaldehyde in the product is ≤ 4.0mg/100g, far lower than the national standard E1 grade 9.0mg/100g; ③ The moisture absorption of fire-retardant plywood is not large, the water absorption thickness expansion rate is stable, and the moisture-proof performance is excellent, which does not affect the secondary processing of finishes, paints, etc; ④ It has high chemical stability and excellent aging resistance; ⑤ MOR, MOE, IB and other physical and mechanical performance indicators meet the class a requirements for superior products specified in the national standard; ⑥ Fire retardant plywood is safe and environmentally friendly, and the combustion residue is non-toxic and pollution-free; ⑦ Flame retardant plywood has excellent screw grip and does not corrode metal links; ⑧ It does not damage the veneer, glue adhesion and machining performance of fire-retardant plywood. Product specification: 1220 × two thousand four hundred and forty × [4, 5, 9, 12, 15, 18] mm flame-retardant wood-based panels, as an important part of fire-fighting products, should be carefully selected.