基于注塑机的聚苯乙烯pVT特性在线测试  

On-Line Testing of pVT Property of Polystyrene Based on an IMM

作　　者：王建[1] 杨卫民[1] 谢鹏程[1] 丁玉梅[1] 

机构地区：[1]北京化工大学机电工程学院,北京100029

出　　处：《高分子材料科学与工程》2010年第1期125-128,共4页Polymer Materials Science & Engineering

基　　金：国家科技支撑计划(2007BAF13B01);新世纪优秀人才支持计划(NCET-05-0120);北京化工大学青年教师自然科学研究基金(QN0804)

摘　　要：利用一种新的基于注塑成型机的聚合物P-V-T(压力-体积-温度)特性在线测试技术,对无定形聚合物聚苯乙烯(PS)的P-V-T特性进行了测试。测试得到了PS在线PVT特性结果,并同软件Moldflow数据库中的一种PS的P-V-T数据结果做了比较,其曲线趋势一致性证明了的结果的正确性以及测试技术的可行性,而其曲线的不同性则证明同种材料不同牌号的P-V-T特性具有不同性。利用修正的双域Tait状态方程对实验结果进行了关联对比,很好的拟合了测试结果,并获得了状态方程的参数值。A novel on-line testing equipment was used to measure the P-V-T （pressure-volume-temperature） relationships of polymers at processing conditions. This equipment is based on an injection molding machine （IMM）. The P-V-T property of polystyrene （PS） was measured. The on-line P-V-T results were obtained and compared with those obtained from a material database of software Moldflow. The P-V-T curves were consistent, which proved that the new on-line measurement is feasible. The difference of the curves proved that the P-V-T properties are different between the materials with a same family name but different brands. The P-V-T property was correlated by a modified two-domain＇Tait EOS, showing a good agreement with measurements. The parameters for the EOS were obtained.

关 键 词：注射成型 聚苯乙烯 P-V-T特性 在线测试 Tait状态方程 

分 类 号：O631.6[理学—高分子化学]