浇口因素对动态注射成型制品影响的研究  

STUDY ON EFFECT OF INJECT GATES ON PROPERTIES OF DYNAMIC INJECTION MOLDING PRODUCTS

作　　者：李兵[1] 李从威 周南桥 石宝山[1] 

机构地区：[1]北京理工大学珠海学院机械与车辆工程学院,珠海519085 [2]三一集团有限公司港机研究院,长沙410100 [3]华南理工大学聚合物成型加工工程教育部重点实验室,华南理工大学聚合物新型成型装备国家工程研究中心,广州510641

出　　处：《工程塑料应用》2010年第5期28-31,共4页Engineering Plastics Application

摘　　要：对动态注射条件下不同浇口聚丙烯(PP)/碳酸钙(CaCO3)试样的力学性能进行研究。结果表明,在其它工艺参数一定的情况下,大浇口下动态注射成型试样的力学性能比小浇口有一定提高;相对于稳态注射成型,动态注射时浇口越小,试样的力学性能增加幅度越小;振动力场对于CaCO3在PP基体中的分散有很大作用,但浇口大小对最终制品中CaCO3的分布并无明显规律;动态注射成型时试样的熔点随浇口尺寸增大而提高。The mechanical properties of dynamic injection molding PP/CaCO3 products with different inject gates are analyzed. The results showed that while other process parameters are unchanged, the mechanical properties of specimen molding in largesize inject gates displayed better than the small-size gates. Compared with the static injection, the smaller inject gate, the smaller range improve of the properties of the specimen under dynamic injection. The decentralization of PP/CaCO3 in dynamic inject process is increased, but the decentralization of PP/CaCO3in different inject gates is ruleless in dynamic process. The melt point of specimen increases with the increase of inject gate in dynamic process.

关 键 词：动态注射 PP CACO3 力学性能 

分 类 号：TQ32[化学工程—合成树脂塑料工业]