摘要
聚合物的结晶受温度及温度历史影响较大,同时发生结晶又会对聚合物材料温度场产生影响.为了准确模拟冷却过程中温度场和结晶情况,将半结晶性聚合物熔体冷却过程及其结晶过程耦合起来分析,把宏观温度场结果作为介观模拟的输入,再把介观模拟的球晶生长情况作为宏观温度场模拟的输入,可同时得到宏观与介观二个尺度的模拟结果.由于该耦合建立在一定的物理基础上,模拟得到的结果较为合理.
The crystallization behavior of a polymer is simultaneously influenced by temperature and temperature experience, but its temperature field is dependent on crystallization. A coupling analysis of cooling and crystallization process was carried out to exactly simulate the temperature field and crystallization behavior of se- mi-crystalline polymer melt. In the coupling method the result of temperature field was considered as the input of crystallization analysis and then the result of spherulites evolution was used as the input of temperature field simulation, so simulation results of the double scales, macroscopic and mesoscopic, was obtained at the same time. Because the coupling analysis has the physical background, the result of numerical simulation can be thought reasonable.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2007年第2期186-192,共7页
Journal of University of Science and Technology Beijing
基金
国家自然科学基金重大项目(No.10590352)
国家杰出青年科学基金资助项目(No.10225211)
关键词
聚合物熔体
半结晶
冷却过程
双尺度
模拟
温度场
球晶
polymer melt
semi-crystallization
cooling process
double scale
simulation
temperature field
spherulite
