The Development Of Auto Interior Decorative Material Of Needle-punched Nonwoven Of Sound Absorption And Flame Retardant Polyester

This topic researched the sound-absorbing and flame retardant properties of polyester needle-punched nonwoven, developed the whole of needle-punched nonwoven of sound absorption and flame retardant polyester, complex functions with a sound-absorbing fire retardant polyester needle non-woven material, mainly used in automotive interior carpets, seats cover, roof and trunk liner and so on. With the advantages and disadvantages of needle-punched nonwoven materials of the sound absorption, VA-LAB noise and vibration tester of the Beijing prestigious is used in this research, in the first, tested the affection of the technological parameter of needlepunched on the sound absorption performance of needle-punched nonwoven materials, the main process parameters are the thickness, surface density and bulk density, then the flame-proof treatment of the needle punched nonwoven and the flame retardancy is tested.Finally, the flame-retardant non-woven materials is carried, after finished the sound absorption performance of the second test, through compared on changing the absorption coefficient of the material, and studied the impaction of the flame retardancy on the sound absorption properties of the needle-punched nonwoven materials. Through a series of tests and data analysis, we found that the main factors influenced the sound absorption, which have net laying speed, stroke frequency and needle density and depth of these parameters and so on, and these parameters will affect the needle punched nonwoven material thickness, surface density and bulk density. Thickness on the material is affected on the sound absorption properties, which is the most obvious factors. The needle in the thick material thickness and intermediate frequency sound section of the acoustic wavelength is relatively close and the absorption capacity of If the sound section of acoustic wave is best. ZR-100 special flame retardant polyester have a good effect on the flame retardant finishing effect of thick polyester needle punched nonwovens, after finished, the flame retardant index can reach national standard B1;In general, the sound absorption performance of needling the nonwoven material is slightly decreased in the flameretardant finishing, typically 5%-15%, which is obviously decreased in intermediate frequency sound segment of the acoustic absorption capacity, and is not obviously decreased in the low frequency and high frequency of sound the acoustic absorption ability; Finally, it is concluded that the best composite functional polyester needled of automotive interior materials is the No.3 sample.