超声波测量聚合物熔体密度  

Ultrasonic Measurement of Polymer Melt Density

作　　者：金艳[1] 吴大鸣[1] 何亚东[1] 许红[1] 

机构地区：[1]北京化工大学塑料机械及塑料工程研究所,北京100029

出　　处：《塑料》2011年第5期102-105,共4页Plastics

基　　金：国家"十一五"科技支撑计划(2007BAF13B0O);国家自然科学基金(51073021)

摘　　要：通过理论分析和推导,提出了用超声波测量聚合物熔体密度的方法,并采用自行设计的超声波熔体测量装置对聚丙烯进行测试,实验验证了超声波速度与聚合物熔体密度的单值性,从理论及实验两方面验证了该方法的可行性。该方法可用于在线测量聚合物熔体密度以表征聚合物加工过程中熔体的塑化均匀程度,为优化工艺条件及实现注塑过程中的质量控制提供了可能。Through theoretical analysis and derivation, a method that measuring ultrasonic velocity to reflect the density of polymer melt was proposed. Polypropylene were tested by using self-designed ultrasonic measuring device,and the single value between ultrasonic velocity and the density of polymer melt was verified by experiments. The method was feasible by verification of both theory and experiments. This method could be used for on-line measurement of polymer melt density uniformity in the polymer processing, and it was useful for optimization of process conditions and weight control in the injection molding process.

关 键 词：超声波 熔体密度 注射成型 PVT 精密 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]