在回收聚乙烯四甲中混合化矿物填料
Marcel Droß1, Max Ehleben2, Klaus Dröder1
1Institute of Machine Tools and Production Technology, Technische Universität Braunschweig, Langer Kamp 19b, 38106 Braunschweig, Germany.
Polymers
|February 13, 2025
概括
再循环聚乙烯二甲酸盐 (RPET) 复合材料与伏拉斯托尼特-石填充剂显示了改进的机械和热性能. 这些混合矿物填充材料提供了增强的刚性和稳定性,其中拉斯托尼特-石英表现最好.
科学领域:
- 材料科学与工程 材料科学与工程
- 聚合物科学 聚合物科学
- 复合材料 复合材料 复合材料
背景情况:
- 回收聚乙烯二甲 (RPET) 是对原始聚合物的可持续替代品.
- 矿物填充剂可以增强聚合物复合材料的机械和热性能.
- 混合填充剂提供协同效应,可能会比单个填充剂提高复合材料的性能.
研究的目的:
- 评估RPET混合矿物填充复合材料的机械,热和形态特性.
- 为了研究不同矿物填充剂 (wollastonite, mica,塔尔克) 和它们的组合对RPET特性的影响.
- 评估这些复合材料的动态机械反应.
主要方法:
- 制备RPET复合材料,其中单个和混合矿物填充剂 (wollastonite, mica,塔尔克) 的含量不超过20%的重量.
- 机械测试:拉力,压缩和曲性能.
- 热分析:热扭曲温度和结晶度的程度.
- 动态机械分析 (DMA) 的频率为1 Hz,2 Hz,5 Hz和10 Hz.
- 使用扫描电子显微镜 (SEM) 进行形态分析.
主要成果:
- 与未填充的RPET相比,所有混合矿物填充RPET复合材料都表现出增强的刚性,强度和热稳定性.
- 填充沃拉斯托尼特的RPET复合材料表现出最有利的结果,表明很好的填充剂-矩阵兼容性.
- 填料含量增加通常会导致更好的机械和热性能.
- SEM分析揭示了对断裂表面和形态的洞察力,与观察到的属性增强相关.
结论:
- 混合矿物填充是一种有效的策略,可以提高回收聚乙烯二甲的性能.
- 作为RPET中的填充剂的瓦拉斯托尼特和石的组合产生了卓越的机械和热性能.
- 这些发现支持在需要提高材料性能和可持续性的应用中使用基于RPET的混合复合材料.
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