欧洲自拍另类欧美综合图片区,国产精品无码一区二区三区不卡免费,久久久久久亚洲精品乱码蜜桃不卡,久久婷婷丁香五月天

Time: 2017-02-17

"Flame retardant materials contributed to the safe evacuation of the vast majority of passengers in the crash of asiana airlines flight 214 on July 6." This is domestic and international aviation expert and fire retardant material expert express consistent view a few days ago.

After the asiana air crash, the New York times, the Wall Street journal, Los Angeles times and many other American media reported on this, repeatedly mentioned that the extensive use of flame retardant materials in the body is an important reason to avoid more casualties.

Kevin seat, chairman and CEO of the American foundation for flight safety, said the use of flame-retardant materials contributed to the crash. In this case, the flames were so hot that they ignited the metal in the plane, and later the contents of the cabin. But in the end, there was still plenty of time for passengers to escape (about three to five minutes), and most were able to do so thanks to the extensive use of flame-retardant materials on board. New flame retardant materials make the interior of the cabin ignite more slowly and avoid releasing harmful gases, both of which are important factors to ensure the safe evacuation of disaster site personnel.

In the crash, the Boeing 777 crashed into the engine on the right side of the aircraft as it crash-landed, leaking fuel tanks and quickly catching fire. Almost all the passengers fled safely before the fire reached the cabin, and it did not spread violently even after emergency workers entered the cabin to remove the injured passengers. Various types of flame retardant materials were used in almost every part of the Boeing 777, from the fuselage to the roof to the seats, giving passengers plenty of time to escape. This fully demonstrates that flame-retardant materials can effectively slow down the spread of fire and provide valuable escape time. Experts at the north American society for flame retardant (NAFRA) said after the crash that many more people would have been injured or killed if the aircraft had not been using flame retardant materials.

Zhou zhengmao, secretary general of the China flame retardant society, said that in order to reduce the weight of the aircraft, to save fuel, the aircraft used a large number of lightweight polymer materials, while the trouble is to increase the aircraft's flammability. Thirty years ago, there were international regulations on the use of polymer materials such as plastics,

textile

Products must be flame retardant materials. This regulation has achieved remarkable results. From 1962 to 1981, 54 percent of passengers died in U.S. plane crashes, according to the national transportation safety board. From 1982 to 2009, that figure fell to 39%.

At present, with the improvement of national fire safety regulations and standards,

Flame retardant

in

plastic

, textiles and other types of polymer materials are increasingly widely used, especially in aircraft,

The car

,

electronic

electrical

Become an indispensable safety barrier in the product. In recent years, China has been constantly strengthening the promotion and application of flame retardant products, and relevant departments have also introduced relevant fire safety regulations to improve the flame retardant level of various flame retardant products. However, due to the supervision and cost increase and other factors, there is a certain gap between the application of flame retardant materials in China and developed countries in terms of both quantity and quality, and the potential fire hazard cannot be ignored.

"To alert the asiana crash to us again, further intensify supervision, strengthen the promotion and popularization of the flame retardant materials is to reduce the fire hazard and fire of the important means of casualties and property losses, both on the planes, cars and other vehicles, or in a public place or in the family, the organic material of the flame retardant fire can't ignore." Zhou zhengmao said.