Time–temperature–transformation (TTT) cure diagrams: Relationship between Tg and the temperature and time of cure for a polyamic acid/polyimide system

G. R. Palmese; J. K. Gillham

doi:10.1002/app.1987.070340511

Time–temperature–transformation (TTT) cure diagrams: Relationship between T_g and the temperature and time of cure for a polyamic acid/polyimide system

G. R. Palmese, J. K. Gillham

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

Glass transition temperatures (T_g) were obtained vs. isothermal temperature (T_cure) and time of cure for a polyamic acid/polyimide system. A time–temperature–transformation (TTT) isothermal cure diagram was constructed to include the time to vitrification and iso‐T_g curves. As for expoxies, the relationship between T_cure and the time to vitrification is S‐shaped. Plots of T_g vs. T_cure show that solvent evaporation and chemical reaction are controlled by vitrification.

Original language	English (US)
Pages (from-to)	1925-1939
Number of pages	15
Journal	Journal of Applied Polymer Science
Volume	34
Issue number	5
DOIs	https://doi.org/10.1002/app.1987.070340511
State	Published - Oct 1987
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Chemistry
Surfaces, Coatings and Films
Polymers and Plastics
Materials Chemistry

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10.1002/app.1987.070340511

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abstract = "Glass transition temperatures (Tg) were obtained vs. isothermal temperature (Tcure) and time of cure for a polyamic acid/polyimide system. A time–temperature–transformation (TTT) isothermal cure diagram was constructed to include the time to vitrification and iso‐Tg curves. As for expoxies, the relationship between Tcure and the time to vitrification is S‐shaped. Plots of Tg vs. Tcure show that solvent evaporation and chemical reaction are controlled by vitrification.",

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AB - Glass transition temperatures (Tg) were obtained vs. isothermal temperature (Tcure) and time of cure for a polyamic acid/polyimide system. A time–temperature–transformation (TTT) isothermal cure diagram was constructed to include the time to vitrification and iso‐Tg curves. As for expoxies, the relationship between Tcure and the time to vitrification is S‐shaped. Plots of Tg vs. Tcure show that solvent evaporation and chemical reaction are controlled by vitrification.

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Time–temperature–transformation (TTT) cure diagrams: Relationship between T_g and the temperature and time of cure for a polyamic acid/polyimide system

Abstract

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