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中文摘要：
利用脉动压力诱导注射成型装置对金属粉末／聚合物体系及低密度聚乙烯（LDPE）进行实验研究。实验结果表明：脉动压力的引入提高了金属粉末／聚合物体系注塑制品的致密性，制品密度提高；随着活塞杆振动振幅／频率的增大，低密度聚乙烯注塑制品力学性能提高，注塑试样熔融峰变宽，熔点向高温方向移动。
英文摘要：
Using metal powder/polymer system and low-density polyethylene （LDPE） , experiments were performed on the pulsatile pressure induced injection molding machine. The results showed that with the introduction of vibration forces, the metal powder parts became more compact and the density of products became higher. The LDPE injection molded parts ＇ extension strength became higher. The melt peak became wider and the melt point moved to higher points with the increasing of piston rod vibration amplitude/frequency.
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