Local Thermal Analysis: Study of viscoelastic properties and time dependence in Surlyn

Autor: Harsha Kulkarni, Gregory Mogilevsky, Alfred Kleinhammes, William D. Mullins, Yue Wu
Rok vydání: 2005
Předmět:
Zdroj: MRS Proceedings. 898
ISSN: 1946-4274
0272-9172
Popis: Self-healing ability is a fascinating property of some materials. Structural materials with self-healing ability require a subtle combination of flow and stiffness characteristics. A vivid demonstration of self-healing is the automatic sealing of the bullet hole after bullet penetration of the target material. The ionomer Surlyn® satisfies the needs of both structural requirements and self-healing to a certain extent. The viscosity of Surlyn is very high at room temperature, a favorable property for structural applications but unfavorable for self-healing. However, when it was heated to 100°C and then cooled back down to room temperature, its viscosity remains temporarily low at room temperature for a few minutes, a favorable condition for healing. Here we report the measurement of such short-time relaxation effects on flow properties in Surlyn using an atomic force microscope (AFM)-based local thermal mechanical analyzer (LTA).
Databáze: OpenAIRE
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