Aktivní norma | Vydána: 26.11.1987

ISO 7884-8:1987

Glass — Viscosity and viscometric fixed points — Part 8: Determination of (dilatometric) transformation temperature
(Verre — Viscosité et points viscosimétriques fixes — Partie 8: Détermination de la température de transformation (dilatométrique))

Dostupné jazyky: Anglicky

Dostupné provedení: Elektronické PDF, Tištěné

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Podrobné informace

Označení: ISO 7884-8:1987

Datum vydání: 26.11.1987

Stran: 4

Země: Mezinárodní technická norma

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Anotace

Description / Abstract: The temperature characterizes a certain glass transition range from the elastic brittle (low temperature) state to the viscous (high temperature) state of glass. It is used for specifying cooling programmes. The transformation temperature is determined by measuring the change in length, related to the length at intial temperature, of a rod made from the glass under test with temperature. The relative change in length is plotted against the temperature (dilatometer curve). From this dilatometer curve the transformation temperature is determined by a graphic procedure as shown in a diagramm.

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