THE NON-EQUILIBRIUM GLASS TRANSITION OF POLYMERS AND ITS RELATED RHEOLOGICAL BEHAVIOR
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摘要:高聚物在玻璃化转变前后表现出截然不同的力学、物理及流变特性,并在玻璃态下继续松弛。本文介绍了有关经典理论的形成和发展,最后从热力学、统计力学、动理学(kinetics)3方面联合考虑提出了3维空间(PVT/PST)数学表象,这是目前处理这方面问题较完善的理论。Abstract:Polymeric, glass, forming materials demonstrate , distinctly different physical, mechanical and rheological properties through glass transition and undergo continuous relaxation in glass state. The relevant classical theories are overviewed. A three dimensional mathematical representatipn (PVT/PST) by joint consideration of thermodynamics, statistical mechanics and kinetics is proposed, which proves most versatile in this area at present.
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Key words:
- glass transition/
- polymeric glass/
- non-equilibrium
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