HC WIRE: Large number of rigid polyurethane foam applications are flame retardant, 20-year fire-retardant materials in China corresponding standards have been amended, and gradually with the international standards. Through a summary of previous research, this paper Polyurethane Foam in the implementation of "Classification flammability of building materials" (GB8624-2006) after what direction should be put forward some suggestions.
[Keywords]: flame-retardant standards; polyurethane foam; flame direction
1 polyurethane foam flame more than 20 years the implementation of relevant standards
1.1 "Classification flammability of building materials" (GB8624-1997) for the PU foam level of the stringent requirements of B1
The past 20 years, China's polyurethane industry developed rapidly. As the product has very low thermal conductivity and vapor permeability resistance, light weight, high specific strength, combined with paper, metal, wood, cement board, brick wall Plastic , Asphalt felt so strongly adhesive, without adding Other Adhesives, etc, have many industrial and civil sectors used. red sox #20 mlb jersey However, polyurethane and other polymer materials as a strong polymer flammability. Rigid polyurethane foam of density, thermal insulation performance, the exposed surface with the outside world than other materials, large, therefore easier to burn. With the extensive use of polyurethane foam, the materials, flame, fire, etc. It is an urgent need to address the important issue. In China, accidentally ignited polyurethane foam as a result of the frequent occurrence of fire, to the application of polyurethane foam has had some negative impact. Many experts in foreign countries even think red sox #20 mlb jersey that this issue is whether the future of rigid polyurethane foams
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