Time-dependent responses in cross-linking polymers

交联聚合物中的时间依赖性响应

• 批准号: 175077-2009
• 负责人: Sullivan, Pearl
• 金额: $ 1.68万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2009
• 资助国家: 加拿大
• 起止时间: 2009-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=422877
• 关键词: Time; dependent; responses; cross; linking

Adhesives are polymer-based liquids or films that are used to bond or join components. Structural adhesives have to be cured at elevated temperature to achieve the strength and stiffness needed for joint integrity. Cure is a term used to describe the chemical reaction when liquid resins harden to form a strong cross-linked polymer. An inherent characteristic of polymers is that their physical and mechanical properties are strongly dependent on both time and temperature. This phenomenon, known as viscoelasticity, presents potential problems in engineering since the long-term stability of polymers after processing is not well known.

粘合剂是用于粘合或连接组件的聚合物基液体或薄膜。结构粘合剂必须在高温下固化，以获得接头完整性所需的强度和刚度。固化是一个术语，用于描述液体树脂硬化形成强交联聚合物时的化学反应。聚合物的固有特性是其物理和机械性能强烈依赖于时间和温度。这种现象称为粘弹性，在工程中存在潜在的问题，因为聚合物在加工后的长期稳定性并不为人所知。