Fire retardant to build fire separation belt

2022-06-10 10:42:58

Urbanization brings new hidden dangers of fire

Zhouzhengmao, Secretary General of China flame retardant society, introduced that the increase of urbanization rate has brought about dense buildings and an increase in population density. At the same time, technological progress has also brought more and more electrical equipment and electronic products into the home, resulting in a significant increase in fire hazards. A large number of super large-scale industrial buildings and special civil buildings have sprung up, especially super large space buildings, super high-rise buildings, large underground buildings and flammable and explosive places. These buildings are large in scale, complex in structure, contain many kinds and quantities of combustibles, and are very densely populated, which is very prone to large-scale three-dimensional fires. This is a very important reason for the increase in the number of major fires and the obvious increase in mass casualties.

According to the statistics of the Fire Department of the Ministry of public security, the total number of fires in China in 2012 was 125000; In 2013, it increased to 388000, an increase of more than 2 times; In 2014, the number increased to 395000. With the gradual increase of urbanization rate, the trend of increasing the number of fires has begun to take shape.

Fire retardant to build fire separation belt

"Facing the increasingly severe fire situation, in addition to strengthening management, we must also rely on advanced scientific and technological means to reduce fire hazards from the source. The promotion and application of flame retardants is one of the important means to build a passive fire protection system." Zhouzhengmao said.

The contribution of flame retardants to fire safety cannot be underestimated. Zhouzhengmao said that studies in Europe, the United States and India have shown that flame retardants in upholstered furniture can slow down the spread of fire and provide valuable escape time for people. According to the assessment of the European Commission, the use of flame retardants has reduced the number of fire deaths in Europe by 20% in the past 10 years. In july2013, the Asiana air crash in San Francisco, the United States, 304 of the 307 passengers were able to escape. Thanks to the wide application of flame retardant materials in the body, more casualties were avoided. When reviewing the good news in 2013, national radio of the United States ranked the application of flame retardant materials in the aviation field as the top.

Zhouzhengmao said that the source control role played by flame retardants in fire safety has been widely recognized internationally. Developed countries and regions such as Europe, America and Japan have very strict mandatory flame retardant standards in some key application fields (such as furniture, electrical appliances, electronic products, textiles, etc.), requiring the use of flame retardant materials. At present, polymer materials with flame retardant properties in Europe and America account for 15% ~ 20% of all furniture. "There is no doubt that the rational application of flame retardants is an important technical means to ensure fire safety. China's urbanization cannot be separated from the full support of the flame retardant industry." Zhouzhengmao said, "compared with developed countries, the application proportion of flame retardant polymer materials in China is less than 2%, and there is still much room for improvement. There is a lot of work to be done in terms of the construction of laws and regulations, the improvement of standards, the research and development of new products and market promotion."

Flame retardants exert their flame retardancy through several mechanisms, such as endothermic effect, covering effect, inhibition of chain reaction, asphyxiation of non combustible gases, etc. Most flame retardants achieve flame retardancy through the joint action of several mechanisms.