基于超声技术的塑料注射成形过程在线检测  

On-line detection of plastic injection molding process by ultrasonic technology

作　　者：赵朋[1] 傅建中[1] 李阳[2] 周华民[2] 

机构地区：[1]浙江大学流体传动及控制国家重点实验室,浙江杭州310027 [2]华中科技大学材料成形与模具技术国家重点实验室,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2010年第7期29-31,48,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家科技支撑计划资助项目(2007BAF13B04);国家高技术研究发展计划资助项目(2009AA03Z104);国家自然科学基金资助项目(50905162;50875095)

摘　　要：提出一种新的塑料注射成形过程在线检测方法,利用超声波在异质界面的反射与透射行为以及对温度和压强的响应特性,研究注射成形过程中无定形塑料聚苯乙烯(GPPS)和结晶型塑料聚丙烯(PP)的超声衰减行为,探讨工艺参数(模具温度和保压压力)对无定形塑料超声衰减行为的影响规律.实验结果表明:超声衰减信号能准确反映出塑料熔体的注射、冷却、收缩以及结晶过程信息,可用于注射成形过程的在线检测.A new method for on-line detection of plastic injection molding process woes proposed to establish a fundamental understanding between the evolution of ultrasonic attenuation and the change of polymer state. Based on the reflection and transmission behaviors at interface as well as the response for temperature and pressure,the ultrasonic behaviors of amorphous polymer GPPS and crystalline polymer polypropylene during polymer processing,and the effect of process parameters,including mold temperature and packing pressure,on the ultrasonic behaviors of amorphous polymer were studied. Experiment results show that the ultrasonic attenuation not only can provide the information on filling,solidification and detachment during the injection molding process but also can reflect the evolution of crystal morphology. The ultrasonic technology is a potential measurement for characterization of polymer state on-line during processing.

关 键 词：注射成形 在线检测 超声技术 结晶 工艺参数 

分 类 号：TQ320[化学工程—合成树脂塑料工业]