The combustion level of insulation materials is divided into 4 levels: A, B1, B2 and B3. How to distinguish them?
The combustion levels of insulation materials are divided into A, B1 and B3. There are four levels of B2 and B3. Level A is flame-retardant materials, and level B is flammable materials. Level B1 is flame-retardant materials, level B2 is flammable materials, and level B3 is flammable materials. The second article of the previous "old regulations" stipulates that the combustion performance of exterior insulation materials for civil buildings should be B1 level and should not be lower than B2 level; the fourth article has been refined and stipulates: the height of residential buildings is greater than or equal to 100 meters. If the height is 60 meters or more and less than 100 meters, the insulation material should not be lower than B2 level. When B2 level insulation material is used, a horizontal fire isolation zone should be set for each layer; the height is 24 or more. If the meter is less than 60 meters, the combustion performance of the insulation material should not be lower than B2 level. When using B2-level insulation materials, horizontal fireproof isolation strips should be provided for every two layers. Grade A is an inorganic material, usually an aluminum foil layer. The purpose of using the outer aluminum foil is to clean it better, make the exterior light smoother and more beautiful, and have a longer service life. It is generally used in laboratories with relatively high environmental requirements.
The new regulations clearly require that from March 15, 2011, all civil building exterior wall insulation materials must use non-combustible B1 grade materials. , the use of B2 and B3 grade materials is no longer allowed.
Rubber and plastic insulation material B1 grade rubber and plastic insulation material is flame retardant in compliance with national fire protection standards; B2 grade also complies with national standards and is flame retardant and self-extinguishes from fire within 3 seconds. B2 Grade products are economical products with lower prices than BI grade products.
The main features of Dukan rubber and plastic insulation board are low density, closed bubble structure, low thermal conductivity, extremely low water vapor transmission rate, low water absorption, good flame retardancy, excellent anti-aging performance, softness and convenient construction. . Environmental protection performance: Green and environmentally friendly: it does not produce waste gas, waste water, waste residue, fireworks and other pollutants, and fully meets the requirements of ISO14000 international environmental protection certification. Application fields Based on the above characteristics, this product is widely used for thermal insulation and insulation of various water vapor pipelines in central air-conditioning refrigeration machine rooms, construction, ships, vehicles and other industries. And achieved ideal usage results. Due to its softness and resistance to bending, this material can be used to make handles and expansion covers for fitness equipment and medical equipment. The installation is simple and quick, the material of this product is soft, and the construction and installation are convenient. For the installation of pipes, they can be installed together with the pipes and installation progress, or the pipes can be cut open and then bonded with professional glue. For complex shapes such as valves, elbows, tees, etc., cut the plates and pipes according to actual requirements, then select and wrap them according to different shapes, and then glue them. This ensures that the entire system is airtight and aesthetically pleasing. Basic operating procedures recommend the use of rubber and plastic special glue and tape produced by our company. All gap joints need to be glued and sealed. When bonding, first understand the pipe specifications, from large to small, first elbow, tee, then pipe, then valve flange. Use an appropriate amount of bonding glue and the material interface should be slightly squeezed. The thickness of the insulation is large, and when the insulation needs to be stacked, the cuts on each layer are staggered. Do not stretch the material during installation, and leave an appropriate 10mm.
Rubber-plastic insulation board: has excellent resistance to water vapor penetration; moisture resistance μ ≥ 10000; it is both a thermal insulation layer and a moisture-proof layer.
Rubber and plastic insulation board: good fire resistance; oxygen index is above 32
Rubber and plastic insulation board: does not contain fluorocarbon materials; does not contain formaldehyde, dust and fiber
Rubber-plastic insulation board: has excellent fire resistance. It is a B1-level flame-retardant material with a service temperature range of -50°C to 110°C
Duken rubber and plastic insulation materials meet B1-level fire protection standards, and have authoritative test reports, factory certificates, etc., and are covered with The aluminum foil layer reaches Class A non-combustible level. The thermal conductivity of rubber-plastic insulation sleeve is 0.034w/m.k, and its surface heat release coefficient is high. Therefore, under the same external conditions, using a relatively thin product can achieve the same insulation effect as traditional insulation materials, B1 level. The important index of fire resistance of rubber-plastic sponge board has been increased to 40%, and it has low thermal conductivity and excellent resistance to water vapor penetration. It is widely used in public buildings with high fire protection requirements, such as supermarkets, hospitals, schools, hotels and other buildings.
Compared with the oxygen index of B2 grade rubber and plastic sponge casing, which is 32%, the B1 grade rubber and plastic sponge board increases this important indicator of fire resistance to 40% and has a lower thermal conductivity (average temperature At 0°C, λ=5,000. B1 grade rubber-plastic sponge board is suitable for thermal insulation of various pipes, equipment and containers with medium temperatures between -50°C and 105°C. It is widely used in building central air-conditioning system equipment. and pipes, domestic hot water equipment and pipes in civil buildings, industrial low-temperature equipment and pipes, and refrigeration and refrigeration equipment, especially for public buildings with higher fire protection requirements, such as supermarkets, hospitals, schools, hotels, etc. , and important municipal buildings, zero-grade rubber-plastic insulation panels are the best choice for customers.