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回收对金属注塑中的聚合物粘合物的完整性的影响

György Ledniczky¹, Ferenc Ronkay², Pál Hansághy¹

¹Department of Innovative Vehicles and Materials, John Von Neumann University, Kecskemet, Hungary.

Scientific reports

|July 2, 2025

概括

在金属注射成型 (MIM) 中的聚合物粘合剂可回收多达四次. 这项研究证实可回收性保持结构完整性和热稳定性,为可持续制造提供了支持.

科学领域:

材料科学材料科学材料科学
制造业工程制造工程
聚合物科学聚合物科学

背景情况:

金属注射成型 (MIM) 使用高精度元件的聚合物粘合剂与金属粉末.
在MIM中,优化原料可回收性对于降低成本和尽量减少废物至关重要.
可持续的制造实践需要评估MIM材料的生命周期.

研究的目的:

研究MIM原料中的聚合物结合物的可回收性.
评估重复回收对粘合剂结构完整性和热稳定性的影响.
为了确定最大的回收循环数量,同时保持可接受的材料性能.

主要方法:

在8个循环中对标本进行系统的研磨和注射成型.
使用融化流量指数 (MFI),差分扫描热量计 (DSC) 和热重力测量分析 (TGA) 的分析.
扫描电子显微镜与能量分散光谱学 (SEM-EDS) 分析损失和学.

主要成果:

融化流量指数 (MFI) 在第四个周期达到峰值,表明最初的粘度下降,随后稳定.
在前三个周期中,线性收缩增加了3%左右,然后稳定下来.
经过多次回收循环后,大约20%的损失发生,影响了粘合剂类风湿学.

结论:

在MIM原料中的聚合物粘合剂可以成功地回收到四次.
在这个限度内,回收会保持可接受的热和质性质.
这些发现支持MIM生产中节约资源和可持续的制造策略.

关键词:

金属注塑成型金属注塑成型聚合物结合剂聚合物结合剂可回收的可回收性可持续发展可持续性可持续性热降解的热降解方式

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