An Investigation into Crystallization and the Subsequent Inelastic Response of Semi-Crystalline Polymers from a Continuum Perspective

从连续体角度研究半晶聚合物的结晶和随后的非弹性响应

• 批准号: 9800510
• 负责人: Kumbakonam Rajagopal
• 金额: $ 14.28万
• 依托单位: Texas A&M Engineering Experiment Station
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-06-01 至 2001-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9800510&HistoricalAwards=false
• 关键词: Investigation; into; Crystallization; Subsequent; Inelastic

Semicrystalline polymers find a variety of uses in the industry due to their ability to undergo large deformations while retaining their toughness. The mechanical, electrical, and optical properties of these polymers are affected by their processing conditions; in particular the temperature induced crystallization. One factor tat plays a major role is the abrupt change in material symmetry caused by temperature induced crystallization. A theoretically rigorous framework for studying the temperature-induced crystallization is being developed. This framework provides a basic for reliable numerical predictions that affect a number of industrial applications including fiber spinning, film blowing, and molding and extrusion processes.

半结晶聚合物在工业上有多种用途，因为它们能够在保持韧性的同时经历大变形。这些聚合物的机械、电学和光学性能受其加工条件的影响，特别是温度诱导结晶。TAT起主要作用的一个因素是温度诱导结晶引起的材料对称性的突变。一个理论上严格的研究温度诱导结晶的框架正在形成。这个框架为可靠的数值预测提供了基础，这些预测影响到许多工业应用，包括纤维纺丝、薄膜吹塑以及成型和挤出过程。