注射机螺杆塑化能力及能耗影响因素的研究  

Influencing Factor of Plasticizing Capacity and Energy Consumption of the Screw in Injecting Molding Machine

作　　者：李世保[1] 刘颖[1] 吴大鸣[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》2008年第6期85-87,共3页Plastics

基　　金：国家十一五科技支撑重点项目(2007BAF13B);海天北化科技有限公司资助项目(2007BAF13B)

摘　　要：以聚丙烯(PP)注射成型为例,着重研究当螺杆转速改变引起PP制品拉伸和弯曲性能变化时,注射机螺杆塑化能力及比能耗的变化。研究发现:随着螺杆转速的提高,虽然螺杆的塑化能力提高,但制品的力学性能呈现不同幅度的下降。拉伸强度下降较大,而断裂伸长率和弯曲强度下降幅度较小,螺杆塑化过程中的比能耗呈现下降趋势。Taking polypropylene （PP） for example, the changes of screw plasticizing capacity and specific energy consumption when tension and bend performance of PP samples were changed in the condition of different screw rotational speed had already researched. It was found that screw plasticizing capacity increased and mechanical property of samples decreased in different degree with screw rotational speed increased. Tensile strength drastically decreased, tensile failure extensibility and flexural strength decreased a little. The specific energy consumption showed a decrease current in the course of plastication.

关 键 词：注射机 螺杆 塑化能力 比能耗 PP 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]