TY  - JOUR
TI  - Research on sound absorption properties of hydrogenated carboxyl nitrile rubber/four-hole hollow polyester fibre composites
AU  - HONG, JIE
T2  - Industria Textila
AB  - A series composite was prepared by adding hydrogenated carboxyl nitrile rubber (abbreviated HXNBR) as the matrixand four-hole hollow polyester (abbreviated FHHPF) as the reinforcement. The sound absorption properties of thesecomposites were studied. The results show that with the increasing of FHHPF quantity, the storage modulus increasesand the loss factor decreases gradually. On the contrary, the sound absorption performance of the composite wasimproved continuously. Composite with 40% FHHPF in 1 mm thickness is the best. The sound absorption coefficientreached to 0.651 at 2500 Hz and the effective frequency range of absorption coefficient above 0.2 was 1750-2500 Hz.When the amount of FHHPF increased to 50%, negative effects of overuse shown up, that led to the decreasing of thesound   absorption   property.   With a   constant   mass   ratio   70/30   of   HXNBR/FHHPF   composite,   the   sound   absorptionperformance can be enhanced by changing its thickness. However, the improvement was smaller after the thicknessincreased to 2 mm. When increasing the thickness above 2 mm, the improvement of sound absorption performancetended to move to the middle and low frequency. In the meantime, the tensile mechanical properties of the compositewere significantly improved by adding FHHPF. Tensile tenacity was improved greatly and the breaking elongation issignificantly decreased. The deformation of the composite was smaller and more stable, which was beneficial for theactual engineering practice.
DO  - 10.35530/IT.072.02.1547
VL  - 72
IS  - 2
SP  - 117
EP  - 125
SN  - 1222–5347
UR  - http://www.revistaindustriatextila.ro/images/2021/2/01%20JIE%20HONG%20Industria%20Textila%202_2021.pdf
ER  -