✦ LIBER ✦

Sound attenuation of interpenetrating polymer network foams

✍ Scribed by D. Klempner; C. L. Wang; M. Ashtiani; K. C. Frisch

Publisher: John Wiley and Sons
Year: 1986
Tongue: English
Weight: 485 KB
Volume: 32
Category: Article
ISSN: 0021-8995
DOI: 10.1002/app.1986.070320332

No coin nor oath required. For personal study only.

✦ Synopsis

Interpenetrating polymer networks (IPNs) composed of polyurethanes and epoxies were prepared by the simultaneous technique. Modifications of the polymer structures resulted in a series of IPNs exhibiting semimiscible behavior, as evidenced by broad glass transitions in the dynamic mechanical spectra. Since this indicates materials with potentially good sound attenuation properties as a function of temperature and frequency, foams were prepared from these IPN systems. Enhanced sound absorption occurred in these foams when measured using the impedance tube method.

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