With the development of science and technology and the advancement of the textile industry, the variety of textiles has been increasing and their applications and quantities have been greatly increased, from people's daily life to industry, transportation, military and many other fields. Following this, the age-old problem of textile fires has become increasingly important. According to the analysis of fire investigation results, fires caused by the ignition and spreading of sound deadening felts that are not flame retardant account for more than 20% of fire accidents. Therefore, how to reduce the burning danger of textiles and the toxic gases released during combustion, and reduce the loss of people's lives and properties, has attracted the attention of all human beings. At present, the limiting oxygen index LOI is widely used internationally to characterize the flammability of sound deadening felts.
There are two main ways to improve the flame retardancy of textile fibers at home and abroad: on the one hand, to improve the flame retardant process in order to improve the flame retardant performance of the original flammable fiber while maintaining its original performance; on the other hand, to vigorously develop new flame retardant fibers. In order to meet the diversified needs of the market, countries led by Japan have strengthened the development of durable, efficient and composite functional flame retardant fibers. According to different applications and requirements, these fibers are flame retardant, heat resistant, antibacterial and deodorizing, fragrance resistant, corrosion resistant, antistatic, UV resistant, waterproof and stain resistant. The traditional sound-deadening felt process of flammable fibers has developed from a single flame retardant element to more than two flame retardant elements.
At present, domestic flame retardant, heat insulation and sound absorption products have a single function of flame retardant and heat insulation or noise reduction, large product weight, difficult to cut and construct, and short service life. Our sound-deadening mat can realize multiple functions at the same time, and it is light in weight, easy to cut and construct, and has a long service life.
In addition, the current domestic rail transportation, automobile, aerospace and other fields urgently need new composite materials with multiple functions at the same time to replace the currently used single-function materials, while achieving the need to reduce weight. This invention meets the market demand and is the traditional industry. The new generation provides a strong support.
Silencing mats are relatively cheap and simple. Felt prepared by this technology not only has good flame retardant effect, but also has heat insulation and noise reduction effect.