Glass transition temperature measurement system

A glass transition temperature Tg measurement system includes a probe point penetrating into a sample under test that has been heated by a heater to a temperature where the sample undergoes a phase change from a solid to a semisolid. A thermocouple is used to measure the temperature while a motion t...

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Bibliographische Detailangaben
Hauptverfasser: JAMES P. NOKES, GARY F. HAWKINS, RAFAEL J. ZALDIVAR
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A glass transition temperature Tg measurement system includes a probe point penetrating into a sample under test that has been heated by a heater to a temperature where the sample undergoes a phase change from a solid to a semisolid. A thermocouple is used to measure the temperature while a motion transducer is used to measure the amount of penetration. The penetration amount sharply increases at the glass transition temperature. A portable unit can be used in the field to test the Tg properties of various composite materials used, for example, in structures including buildings and bridges.