Abstract
A novel polypropylene glycol (designated PPG) which contains an extremely smaller amount of by-products (monols) was developed to improve the riding comfort of an automotive seating foams. The current trend in the automotive seating industry is moving to low resilience molded foam due to the structure change from “full foam” to “foam and high tension spring combination,” new automotive seating foams were desired to have low resilience with keeping the low transmissibility at 6 Hz. Riding comfort mainly consists of three factors such as static property, dynamic property and durability. Each issue was solved by means of increasing the polymer molecular weight and the crosslinking density in the polymer matrix. Furthermore, it was also cleared that the transmissibility at resonance frequency of the foam can lower by means of the adjustment of closed cell ratio in the foam. In this paper, we describe the foam properties (static property, dynamic property, durability) of TDI/MDI based molded foams and make clear the mechanism of the Riding comfort of automotive seating foams.
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Wada, H., Toyota, Y., Horie, A. et al. Automotive Seating Foams with Excellent Riding Comfort Prepared by a Novel Polypropylene Glycol. Polym J 40, 842–845 (2008). https://doi.org/10.1295/polymj.PJ2008098
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DOI: https://doi.org/10.1295/polymj.PJ2008098
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