Optimization of the morphological multi-layer system of micro components by means of a thermally highly flexible process strategy

通过热高度灵活的工艺策略优化微元件的形态多层系统

基本信息

项目摘要

Inner componential properties substantially affect the components resulting properties within semi-crystalline thermoplastics. How inner-componential properties develop primarily depends on the cooling conditions of the component. These cooling conditions depend on the mold temperature due to the components minimal thickness, especially with regards to micro components. Due to a lack of knowledge on the causal relationships between selected tempering parameters, the establishment of inner properties and the resulting tribological properties, the development of tribologically optimal micro components has proven limited. In the research project "Processing induced morphological influences on the properties of thermoplastic micro gears" fundamental information regarding the influence of inner component properties on the resulting tribological properties were able to be obtained. Results showed that optimal tribological characteristics manifest in particular regions within the component with distinct, inner componential properties. By means of a conventional dynamic temperature strategy, which enables cooling at nearly constant cooling rates, higher cooling velocities along the components edges are achieved. Consequently, fewer distinct, inner componential properties and unfavorable tribological properties are emerged. While slower cooling rates could lead to better tribological properties, it would cause significantly longer cycle time. In order to reduce cycle times and to achieve optimal tribological properties, the mold systems cooling velocity needs to be adjustable flexibly. However, this has proven to be inadequate with current techniques. The aim of this transfer project is to study the aforementioned cooling conditions in micro injection molding, which ensure that every finite layer of a thermoplastic components cross section is exposed to the crystallization temperature area. Additionally, generating an idealized, theoretical injection molding temperature profile through process simulation is of fundamental importance. The ultimate aim is a targeted control of the mold temperature in order to optimize the inner-componential properties and, simultaneously, minimize the cycle time with a new, highly dynamic mold tempering strategy. Using the knowledge acquired to date, a demonstrator, here a micro gear, with homogenous, defined and optimal componential properties across the entire cross-section will be manufactured. With the help of obtained results, exploring new, fundamental questions becomes possible. Using the latest characterization methods for analyzing crystallization behavior with process-based cooling conditions allows establishing a process simulation model in which the micro-injection molding requirements can be ideally considered. Furthermore, the ability to manufacture micro-components with amorphous and highly temperature-resistant materials could also be considered.
内部组分性能在很大程度上影响半结晶热塑性塑料中所得组分的性能。零部件内部特性的发展主要取决于零部件的冷却条件。这些冷却条件取决于模具温度,因为组件的厚度最小,特别是对于微型组件。由于对选定的回火参数之间的因果关系、内在性能的确定以及由此产生的摩擦学性能之间缺乏了解,摩擦学最佳微构件的开发被证明是有限的。在“加工诱导形态对热塑性微型齿轮性能的影响”的研究项目中,能够获得关于内部组分性能对由此产生的摩擦学性能的影响的基本信息。结果表明,最佳的摩擦学特性表现在部件内部具有不同特性的特定区域。通过传统的动态温度策略,能够以几乎恒定的冷却速度冷却,实现了沿部件边缘的更高冷却速度。因此,出现了较少的明显的内部组分性能和不利的摩擦学性能。虽然较慢的冷却速度可能会导致更好的摩擦学性能,但它会导致明显更长的循环时间。为了减少循环次数,获得最佳的摩擦学性能,需要灵活地调整结晶器系统的冷却速度。然而,事实证明,这在目前的技术中是不够的。该转移项目的目的是研究上述微注射成型中的冷却条件,以确保热塑性塑料部件横截面的每一有限层都暴露在结晶温度区域。此外,通过工艺模拟生成理想的、理论上的注塑成型温度分布是至关重要的。最终目标是有针对性地控制模具温度,以优化内部成分性能,同时通过一种新的、高度动态的模具回火策略最大限度地缩短周期时间。利用到目前为止所获得的知识,将制造出在整个横截面上具有均匀的、定义的和最佳的组件特性的演示装置,这里是微型齿轮。在已有结果的帮助下,探索新的、根本的问题成为可能。使用最新的表征方法来分析结晶行为和基于工艺的冷却条件,可以建立一个工艺模拟模型,其中可以理想地考虑微注射成型的要求。此外,还可以考虑使用非晶态和高耐温材料制造微型组件的能力。

项目成果

期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Influence of a locally variable mold temperature on injection molded thin-wall components
局部可变模具温度对注塑薄壁部件的影响
  • DOI:
    10.1515/polyeng-2017-0100
  • 发表时间:
    2018
  • 期刊:
  • 影响因子:
    2
  • 作者:
    Fischer;Jungmeier;Peters;Drummer
  • 通讯作者:
    Drummer
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Professor Dr.-Ing. Dietmar Drummer其他文献

Professor Dr.-Ing. Dietmar Drummer的其他文献

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{{ truncateString('Professor Dr.-Ing. Dietmar Drummer', 18)}}的其他基金

Joining by using pin-like structures in welding processes
在焊接过程中使用销钉结构进行连接
  • 批准号:
    432470536
  • 财政年份:
    2020
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Thermoset-bonded injection-molded magnets with defined structure of magnetization
具有明确磁化结构的热固性粘合注塑磁体
  • 批准号:
    448366335
  • 财政年份:
    2020
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Investigations into the production of achromatic lenses by two-component injection compression molding of transparent plastics
透明塑料二组分注射压缩成型生产消色差透镜的研究
  • 批准号:
    432469470
  • 财政年份:
    2020
  • 资助金额:
    --
  • 项目类别:
    Research Grants
High precision micro components by the use of dynamically tempered injection molding
通过使用动态回火注塑成型实现高精度微型部件
  • 批准号:
    391037722
  • 财政年份:
    2017
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Cross linked sheets for highly stressed thermoforming applications
适用于高应力热成型应用的交联片材
  • 批准号:
    283899356
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Research Grants (Transfer Project)
Analysis of performance-related, process related structure and shape deviations of plastic gears for application related design
分析塑料齿轮的性能相关、工艺相关结构和形状偏差,以进行应用相关设计
  • 批准号:
    290477982
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Research Units
High-precision optics by application-optimized compression induced solidification (CIS)
通过应用优化的压缩诱导凝固 (CIS) 实现高精度光学器件
  • 批准号:
    290812922
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Research Grants (Transfer Project)
Defined local influence on properties by injection moulding of thermoplastic micro-parts with dynamic temperature process control, Knowledge Transfer Project
通过动态温度过程控制热塑性微型零件的注塑成型对性能的局部影响,知识转移项目
  • 批准号:
    258700519
  • 财政年份:
    2014
  • 资助金额:
    --
  • 项目类别:
    Research Grants (Transfer Project)
Injection Molding of Signal Generators for Hallsensor-Arrays
霍尔传感器阵列信号发生器的注塑成型
  • 批准号:
    238855620
  • 财政年份:
    2013
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Bonding mechanism during welding of radiation cross-linked thermoplastic polymers
辐射交联热塑性聚合物焊接过程中的粘合机制
  • 批准号:
    248297578
  • 财政年份:
    2013
  • 资助金额:
    --
  • 项目类别:
    Research Grants

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不同栽培环境条件下不同基因型牡丹根部细菌种群多样性特征
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