Stress Accelerated Degradation in Relation to Fracture Polymeric Materials

与断裂聚合物材料相关的应力加速降解

• 批准号: 9310761
• 负责人: Salvatore Stivala
• 金额: $ 3.52万
• 依托单位: Stevens Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-09-15 至 1995-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9310761&HistoricalAwards=false
• 关键词: Stress; Accelerated; Degradation; Relation; Fracture

9310761 Stivala Since oxidation adversely affects the mechanical behavior of polymeric materials, the proposed study will add to our understanding the theoretical basis of the mechano-chemical degradation process. This study will provide the basis in establishing the thermodynamic relationship for the mechano- chemical degradative process in terms of the chemical potential, the driving force responsible for the phenomena. In the ultimate analysis, an indepth understanding of the transition from ductile to brittle failure resulting from a molecular process (i.e., stress accelerated oxidation) would be afforded. ***

9310761 Stivala由于氧化会对聚合物材料的机械性能产生不利影响，因此拟议的研究将增加我们对机械化学降解过程的理论基础的理解。 本研究将为建立机械力化学降解过程的热力学关系提供基础，即化学势，这是导致这一现象的驱动力。 在极限分析中，深入了解由分子过程（即，应力加速氧化）。 ***