Effects of fast mold temperature evolution on micro features replication quality during injection molding
Effects of fast mold temperature evolution on micro features replication quality during injection molding
复制标题
注塑过程中模具温度快速变化对微观特征复制质量的影响
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
G. Titomanlio
中科院分区：
文献类型：
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作者：
S. Liparoti;M. Calaon;V. Speranza;G. Tosello;R. Pantani;N. H. Hansen;G. Titomanlio
对制造高精度、微米和亚微米范围内基于聚合物的微系统产品的功能结构的日益增长的需求要求可靠的大规模生产工艺。作为注塑成型（IM）的聚合物大规模制造和模具温度的最相关的工艺参数之一，以提高聚合物复制在微米级的首选技术，本研究调查的快速模具温度演变的影响，最终复制质量的注塑成型零件。通过UV光刻和随后的镍电镀产生微特征主几何形状。模具温度通过薄加热装置（由作为绝缘层的聚酰亚胺和作为导电层加载的聚酰亚胺炭黑组成）控制，该薄加热装置能够通过焦耳效应在几秒内（40°C/s）增加模具表面上的温度，并使表面在不久之后冷却下来。这种加热装置允许保持模具温度在.
The growing demand to manufacture, with high accuracy, functional structures in the micro and sub-micrometer range polymer based microsystem products calls for reliable mass production processes. Being injection molding (IM) the preferential technology employed for polymer mass fabrication and mold temperature one of the most relevant process parameter to enhance polymer replication at the micro meter scale, the present study investigates effects of fast mold temperature evolution on final replication quality of produced injection molded parts. Micro features master geometries were produced by UV lithography and subsequent nickel electroplating. The mold temperature was controlled by a thin heating device (composed by polyimide as insulating layer and polyimide carbon black loaded as electrical conductive layer) able to increase the temperature on mold surface in a few seconds (40°C/s) by Joule effect and let the surface to cool down soon after. This heating device allowed to maintain mold temperature at ...