细胞皿微型塑件注射成型工艺  

Micro injection parts based on cell container

作　　者：徐斌[1] 王敏杰[1] 于同敏[1] 徐华[1] 

机构地区：[1]大连理工大学精密与特种加工教育部重点实验室,辽宁大连116024

出　　处：《化工学报》2010年第11期2999-3005,共7页CIESC Journal

基　　金：'十一五'国家科技支撑计划重点项目(2006BAF04B13);国家重点基础研究发展计划项目(2007CB714502)~~

摘　　要：微尺度聚合物熔体充模流动过程较复杂,涉及影响因素较多,针对微尺度聚合物熔体的充模流动特点,以细胞皿塑件为研究对象,采用变模温、抽真空排气及微细电火花加工技术,设计制造了微注塑模具。基于Taguchi实验设计方法,以高密度聚乙烯(HDPE)和聚甲醛(POM)两种材料研究了工艺参数及其交互作用对微塑件成型质量的影响规律。实验结果表明,对于HDPE材料,模具温度对填充率的影响最大,保压压力次之,熔体温度和保压时间影响相对较小;对于POM材料,熔体温度对填充率的影响最大,保压压力次之,模具温度和保压时间影响相对较小。Microscale polymer melt filling process is complex due to many factors involved.In this paper,depending on the characteristics of microscale filling flow of polymer melt,the micro injection mold for cell container was designed and manufactured with several technologies,including variotherm system,vacuum system and micro-electrical discharge machining（EDM）.Based on the Taguchi experimental design method,the process parameters were studied with high-density polyethylene（HDPE）and polyoxymethylene（POM）,and their interactions on the quality of molding micro part were investigated.The results showed that for HDPE,the influence of mold temperature on filling rate was the principal parameter in the molding process.Packing pressure was the secondary factor.The impact of melt temperature and packing pressure time was relatively small.The experimental results also indicated that for POM,the influence of melt temperature on filling rate was the main parameter in the molding process.Packing pressure was the secondary factor.The impact of mold temperature and packing pressure time were relatively small.

关 键 词：微注塑成型 细胞皿 成型工艺 正交实验 

分 类 号：TG76[金属学及工艺—刀具与模具] TQ320[化学工程—合成树脂塑料工业]