Accuracy and mechanical properties of multiparts produced in one mold in microinjection molding
Accuracy and mechanical properties of multiparts produced in one mold in microinjection molding
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微注射成型中在一个模具中生产的多部件的精度和机械性能
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
C. T. Yang
中科院分区：
文献类型：
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作者：
C. K. Huang;S. W. Chen;C. T. Yang
由于塑料材料的多功能性和易于批量制造，使用添加了填料的塑料材料已成为一种潜在的替代方案。近年来，微细成型技术已成为注塑成型的一个新分支。一个模具可以用来生产重量不超过几毫克、尺寸精度在几微米量级的多个部件。本文研究了微注射成型中多个零件在一个模具中的收缩和精度。此外，还系统地研究了添加填料的聚合物复合材料的磨损性能和力学性能。实验表明，外径为1.5 mm的微小零件复制良好，结构清晰。平均尺寸偏差小于20μm，玻璃颗粒质量分数为20~25wt%的复合材料在收缩、耐磨和机械强度方面均有显著改善。此外，当磨损表面粗糙度小于0.064μm·Polym时，磨损损失很小，不需要润滑。英语。《科学》，45：1471-1478,2005。©2005塑料工程师学会
The use of plastic materials with added fillers has become a potential alternative due their versatility and the ease of batch fabrication. Recently, micromolding has become a new branch of injection molding. One mold can be used to produce multiparts that weigh no more than a few milligrams and whose precision in terms of dimension is on the order of a few microns. This work investigates the shrinkage and accuracy of multiparts in one mold used in microinjection molding. In addition, the wear and mechanical properties of polymer composites with added fillers are systematically studied. Experiments showed that microparts with a 1.5 mm outer diameter were well duplicated, with clear structural definition. The average deviation in dimension was less than 20 μm. The resulting composites with 20–25 wt% glass particles exhibited significant improvement in shrinkage, wear resistance, and mechanical strength. In addition, wear loss was minor, and lubrication was not needed when the roughness of the wearing surface was less than 0.064 μm. POLYM. ENG. SCI., 45:1471–1478, 2005. © 2005 Society of Plastics Engineers