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Energy security both phenolic foam is an ideal material for wall insulation
Since 2007, along with a variety of materials external insulation materials began to be widely used in public and civil buildings, fires also go hand in hand: the main venue of the Eleventh National Games in Jinan Olympic Sports Center Gymnasium fires occurred two times, Harbin " latitude and longitude 360 degrees "Gemini major fire occurs in the building, CCTV new site the catastrophic fires, are associated with defects in wall insulation has a significant association. Must promote building energy efficiency, fire tragedy also sounded the alarm: "insulation" urgent upgrading.
Fire-resistant version of "insulation" has been published
I research found that China's current building's exterior wall materials are mainly used in polystyrene, polyurethane, foam rubber and other organic materials and rock wool, glass wool and other inorganic materials. These materials, organic materials, heat poor, easy to burn, and when burned, release a lot of heat, producing large amounts of toxic fumes, will not only accelerate the fire spread, and likely to cause casualties and rescue trapped personnel; inorganic materials then there is dust and small fibers, both air pollution and easy to breed bacteria, has already become a hazard to human health risks. So, looking for a fireproof insulation both, and has minimal impact on human health building insulation materials, has become to solve the "insulation" the key issue.
Insulation materials experts, Jinan University, Professor Liu Wei College of Chemistry and Chemical Analysis, from the domestic use of the existing practice of building insulation materials, the use of phenolic foam as a building wall insulation materials, can play safe and energy-saving "double insurance" effect . Good heat resistance of phenolic foam 25 mm thick plates subjected to 1700 ℃ phenolic foam flame injection after 10 minutes, and not only the surface is slightly carbonized by burn, can effectively prevent the spread of fire and fire. It is worth mentioning that, in the fire, most injuries are due to the field of fire smoke and toxic gas caused by, but even by a high temperature phenolic foam ignited, the combustion of which no drip, low smoke, and almost no carbon monoxide and other toxic gases.
Currently, phenolic foam materials and control the fire as a blocking excellent insulation exterior walls have been widely put into use in foreign countries. Repeatedly to study abroad phenolic material Jinan Quan Group chairman Tang Yilin briefed reporters, Marseille, France, Lyon and other cities built many large apartment has phenolic foam board mounted on the outer wall, and then coated with a protective layer to prevent fires burning spread. The Government of Japan is the introduction of laws and regulations, as the phenolic foam material flammability standards of public buildings, in other words, less than phenolic foam resistant to combustion performance, and does not allow the use of public buildings. In China, although the use of phenolic foam insulation air duct production system has been in the "Water Cube", the Beijing subway and other public buildings, construction grade was applied, but has not yet introduced as phenolic foam used as a building wall insulation materials specifications, the current Phenolic foam wall in our civil construction also rarely use.
Need to promote policies, technical follow-up
For China's current building's exterior wall material is present significant safety risks, Liu Wei, Tang Yilin and other professionals suggested that the state should draw the phenolic foam as recommended by our building's exterior wall materials, specifications and carry out the appropriate use of the pilot and technical research progressive, public and civil construction of the "double-effect energy conservation and security."
As a safe, green new building materials, the advantages of phenolic foam has been recognized by more and more people in the industry, but has not yet been included in the national building's exterior wall materials recommended range, which makes the phenolic materials in architectural design aspects it "has been eliminated." Therefore, the state should be as soon as phenolic foam wall insulation recommended building materials, to develop the appropriate technical standards and norms, and select high-rise buildings and large public building construction pilot, and then gradually extended to the civil construction and transportation fields.
In fact, in 2008 more than fires and wall insulation materials are related to some of the burning building construction builders suffered huge losses, has begun to shift risks in the contract will require insulation materials manufacturer for 10 years ~ 25 years of shelf life; Some producers flammable insulation material manufacturers have felt the urgency to upgrade materials, began to seek restructuring production of phenolic foam insulation attempt.
However, in order to promote a wide range of phenolic foam, in addition to an open policy, but also need to quickly improve the technological content of phenolic foam and achieve low-cost production. China's current production of phenolic material also exists brittle, technical defects such as poor strength, national and relevant enterprises should organize experts to conduct technical research, in order to improve its strength. In addition, with the current construction of the building's exterior has been widely used polystyrene materials, phenolic foam prices to be higher than 50%. Thus, through technical research and large-scale production to reduce costs under the premise of this emerging phenolic foam materials industry, the state should also be given tax breaks and other policy support. Currently, the United States, Japan, Germany, France and other countries in the phenolic foam technical reserves and large-scale production have been in the forefront, promoting technological progress of phenolic foam and large-scale production is imperative.
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