Optimization of acoustic performances of a new tung oleic acid-based composite polyurethane foam

Bio-based polyurethane (PU) foam, different from traditional PU foam, is a new green environmental acoustic material. It can be used in the field of automobiles. In this work, a new tung oleic acid-based composite PU (TOAPU) foam was prepared using tung oleic acid-based polyol and polyether polyols 3630. It is important to optimize the formulation of TOAPU foam for better acoustic performance. The effect of each component on the acoustic performance of TOAPU is ordered by screening test. A1, silicone, and A33, the three components that have the greatest impact on the acoustic performance of TOAPU, are used as variables. The response surface method is used to create the model of the effects of different components on the acoustic properties of TOAPU. The model was optimized by using nondominated sorting genetic algorithm II method. The optimized acoustic performance property of TOAPU foams was synthesized by adding 0.27 g of A1, 1.03 g of A33, and 2.81 g of silicone oil. The experimental results show that the mean sound absorption coefficient and transmission loss can reach 0.515 and 21.389 dB. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136, 47861.