Environmental stress crack resistance of structural polyethylene: modelling long-term material performance

结构聚乙烯的耐环境应力开裂性：模拟长期材料性能

• 批准号: 349510-2006
• 负责人: Polak, Maria
• 金额: $ 1.7万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=401845
• 关键词: Environmental; stress; crack; resistance; structural

This proposal addresses modelling of failure of polyethylene (PE) in the context of the applicability of this material for the construction industry. Long term performance of PE is likely the most critical issue that needs to be addressed in order to safely use PE and similar polymers as construction materials. Long term performance and failure (slow crack growth, creep rupture or yield) of PE are directly related to its environmental stress crack resistance (ESCR), which is determined in laboratory conditions. However, the relationship between ESCR and the structural performance of polyethylene in real conditions is not well understood.

该提案解决了聚乙烯 (PE) 在建筑行业的适用性背景下的失效建模问题。 为了安全地使用聚乙烯和类似聚合物作为建筑材料，聚乙烯的长期性能可能是需要解决的最关键问题。 PE 的长期性能和失效（缓慢裂纹扩展、蠕变断裂或屈服）与其抗环境应力开裂性 (ESCR) 直接相关，这是在实验室条件下确定的。然而，实际条件下 ESCR 与聚乙烯结构性能之间的关系尚不清楚。