In recent years, many large-scale fire accidents have occurred in China. In these fire accidents, the defects of the current fireproof performance of commonly used polystyrene board insulation materials are exposed. There is a contradiction in the choice of building exterior insulation materials: materials with good fire performance, poor thermal insulation properties; materials with good thermal insulation properties, fire resistance can not meet the requirements. In the selection and development of insulation materials, it is not advisable to consider only the fire performance and neglect the insulation performance; it is also wrong to blindly pursue the insulation performance regardless of the fire performance. Therefore, the search for a thermal insulation material with good energy-saving effect and good fireproof performance is not only an urgent problem to be solved, but also a development trend of wall insulation materials in the future. Chen Wei, Assistant Engineer of Shanghai Xubo Real Estate Co., Ltd. Material Equipment Table 2 Combustion Performance Comparison Table Item Material Use Temperature Limit Case Oxygen Index Vertical Burning Time Smoke Density Level Range / t: /% Burning Time / S. Flame Height / mm Index Value The measured value of polystyrene +75-7 弋 shrinkage in 302507560 polyurethane +130140 softening more than 32 in 30100 矣 7539 polyethylene +65 material name thermal conductivity / W (m (end)
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