Defined local influence on properties by injection moulding of thermoplastic micro-parts with dynamic temperature process control, Knowledge Transfer Project

在DFG研究小组702“Maschinen-，Werkzeug- und Prozessentwicklung für neue Verfahren zur Herstellung von Mikrobauteilen über flüsworn Phasen”的研究项目“Verarbeitungsbelastung und werkstoffliche Gebrauchstauglichkeit von spritzgegossenen Mikroelementen”中，可以确定工艺条件对热塑性微型零件所得性能的基本影响。特别地，使用导热性低的模具材料的不同冷却条件有利于形态，从而有利于使用中的所得性质。由于高磨损和有限的冷却条件的可控性，这些材料的应用是有限的，该项目的目的是使用的基本知识的影响，材料be-beneficiour调查定义的局部形态发展在注塑件。通过在模具中集成的新型分段回火元件（高性能加热陶瓷），材料的冷却受到局部影响，从而实现部件性能的最大分级或工艺或几何相关影响的均匀化。此外，项目还研究了可实现的高宽比和填充相关复制的相互依赖性。从项目中获得的知识到零件特性的局部影响，应开发一个算法模型，以便使用材料和工艺相关输入参数抽象局部预期的零件特性。将零件特性的影响值、相关性和局部效应等知识转移到演示零件中。此外，基于研究结果的指导方针，模具和工艺设计的动态模具回火下制造的微部件将被导出。

Within the research project " Verarbeitungsbelastung und werkstoffliche Gebrauchstauglichkeit von spritzgegossenen Mikroelementen" of the DFG Research Group 702 "Maschinen-, Werkzeug- und Prozessentwicklung für neue Verfahren zur Herstellung von Mikrobauteilen über flüssige Phasen" the basic influence of the process conditions on the resulting properties of thermoplastic micro parts could be identified. In particular, different cooling conditions using thermal low conductive mould materials favour the morphology and thus the resulting properties in use. Due to the high wear and the limited controllability of the cooling conditions the application of these materials is limited.The aim of the project is to use the fundamental knowledge about influences on the material be-haviour to investigate the defined local morphology development in injection moulded parts. By means of novel in the mould integrated segmented tempering elements (high performance heating ceramics) the cooling of the material is locally influenced so that either a maximum gradation of part properties or a homogenization of process or geometry-related influences is achieved. Furthermore, interdependencies with regard to the achievable aspect ratio and fill-dependent replication of defined structures are researched in the project.From the knowledge gained in the project to local influence of part properties an algorithmic model should be developed to enable an abstraction of locally expected part properties, using material and process-related input parameters. The knowledge on influencing values, interdependencies and local effects on part properties are transferred into demonstrator part. Furthermore, based on the research results guidelines for mould and process design for manufacturing of micro-components under dynamic mould tempering will be derived.