China southern airline developed new fiberglass for mainframe

The crispy and hard and difficult to handle glass fiber, in Nanjing University of Aeronautics and Astronautics the Professor Chen Zhaofeng laboratories, it becomes soft as silk. At the 12th session of the International Conference recently held vacuum insulation material on a new type of insulation material "ultrafine aircraft-grade wool," not only make thick refrigerator door thickness reduced by half, it will be used on large aircraft, make saving fuel, noise insulation.

Chen Zhaofeng group to improve the glass fiber components and nano-inorganic particles as raw material, the patented technology to synthesize core vacuum insulation panel has a micro structure imitation nest. It not only can be used to "big up" large aircraft may also be used for living in common refrigerators, vending machines, buildings.

According to reports, to measure the performance of insulation materials, mainly to see the thermal conductivity, the lower the coefficient, the better the insulation. The thermal conductivity of air is 0.026W / mK, and this "aircraft-grade superfine wool," the thermal conductivity of 0.0015W / mK, air 1/20. This material is one cubic meter only 5 kg weight, while one cubic meter of traditional materials weighing more than 100 kg. At the same time, fiberglass chopped strand mat the fiber is only 3-5 microns in diameter, can greatly reduce the required thickness of the object "insulation." To apply in the refrigerator vacuum insulation panels, for example, the thickness of only 5 mm, 50 mm insulation effect is equivalent to traditional foam board, so that the refrigerator door is thinner, larger internal storage space. In the Nordic countries, the heating energy consumption, the use of such a vacuum insulation panel, can increase 10 percent of indoor area.

    Chen Zhaofeng said that they had successfully won made large aircraft project C919 insulation materials, its insulation performance par with the highest international standards, noise performance than the most advanced Boeing standards but also nearly 10 percent higher. Future, this aircraft-grade glass wool will be posted on the C919 cabin interior, played the role of noise insulation.