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Digitale Medien

A compound pendulum for dynamic viscoelastic property measurements (1962)

Rosenthal, L. A. ; Ungermah, A. J.

Stamford, Conn. [u.a.] : Wiley-Blackwell

Polymer Engineering and Science 2 (1962), S. 307-312

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ISSN: 0032-3888

Schlagwort(e): Chemistry ; Chemical Engineering

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Maschinenbau , Physik

Notizen: A compound pendulum system has been developed for the measurement and study of the modulus of elasticity and internal damping properties of a viscoelastic specimen through a range of temperatures.An analysis of the apparatus and the essential describing equations are presented. Test results for several materials are presented. In the region of the heat distortion temperature many materials exhibit a sharp peak in their damping characteristics. The modulus of elasticity drops rapidly in this region. Modulus of elasticity results obtained compare favorably with static testing machine data. The compound pendulum system described provides a simple technique for these physical property determinations continuously over a range of temperatures.

Zusätzliches Material: 8 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/pen.760020409

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Digitale Medien

The quantitative determination of oil in impact polystyrene (1976)

Nowlin, T. E. ; Ungermah, A. J. ; Wallace, S. L.

New York, NY [u.a.] : Wiley-Blackwell

Journal of Applied Polymer Science 20 (1976), S. 2095-2100

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Details

ISSN: 0021-8995

Schlagwort(e): Chemistry ; Polymer and Materials Science

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Maschinenbau , Physik

Notizen: The combination of an extraction technique with proton magnetic resonance spectrometry (PMR) has provided an analytical method for the determination of hydrocarbon mineral oil blended into an impact polystyrene. The amount of extraction time necessary for quantitative removal of the oil has been shown to be dependent on resin particle size. A linear correlation has been found between the weight of the extract obtained from 10.00 g resin and the per cent oil found in the resin.

Zusätzliches Material: 5 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/app.1976.070200806

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