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First, when the use of unqualified products, construction network, will affect the progress of construction.
, if the use of non-conforming insulation materials, quality will not be guaranteed.
, unqualified insulation material strength is very poor, under the influence of external forces easy to cause cracking phenomenon, affecting the insulation effect of the product.
, the use of non-conforming insulation products, in special circumstances (e.g. fire) flammable, and will produce toxic gases.
, non-conforming insulation products short service life, energy-saving insulation effect is not good, affecting the structure of the building to shorten its service life.
Is a major fire using unqualified insulation materials:
in Shouguang City, Shandong Province, Longyuan Food Co., Ltd. a carrot packaging workshop a two-hour fire, resulting in 18 deaths, 13 injured, but also Longyuan Food Co., Ltd. this carrot packaging workshop almost razed to the ground.
According to the investigation, the fire point is in the cold storage room, the inside of the cold storage, including the top of the operating room, all using polyurethane insulation layer, and the thickness of the insulation layer reached about 10 cm. Polyurethane itself is a flammable insulation material, burning to produce black smoke, and produce a large number of toxic gas, coupled with the accident, personnel dredging adverse results. The main reason for this accident is the use of non-conforming polyurethane insulation materials, qualified polyurethane insulation materials should be added flame retardants, in normal construction conditions will not ignite.
polyurethane as a insulation material for building insulation construction process has many years of history, and because of its poor fire performance or fire due to construction reasons are not uncommon. Compared with polyurethane, the current glass cotton insulation materials in the insulation industry market the largest use, the highest share of insulation products, with non-flammable characteristics, will not produce toxic gases and smoke, not to endanger people's health.
