In this study, we investigated the relationships among isocyanate, foam density, foam thickness and form performances. The discussion summarized as follows. The MDI based isocyanate is optimum for thin seat design because of its inherent stress-strain character. The further weight reduction of molded foam for seat cushion by density reduction affects serious deterioration of the physical properties such as dynamic fatigue performance. The thickness reduction of molded foam result in deterioration of the vibration characteristics, and the increase of foam density is helpful to maintain those properties. The weight reduction by reducing the thickness of molded foam with the increase of the density is proposable with maintaining the foam performances. The new MDI based isocyanate developed by NPU enables at least 20 % weight reduction of a seat cushion by thin seat design without significant change in the foam performances. The new MDl based foam formulated by using the proper reactive catalysts completely prevents amine emission from the foam with maintaining the good foam performances.


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    Title :

    MDI-based HR foam system for weight reduction by thin foam design


    Contributors:
    Yoshii, N. (author) / Sugawar, M. (author) / Nagaoka, T. (author) / Saiki, K. (author)

    Published in:

    Publication date :

    2003


    Size :

    10 Seiten, 8 Bilder, 12 Tabellen, 7 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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