工艺与制造英文2025被引 12
热塑性复合材料超声焊接：聚醚醚酮与低熔点聚芳醚酮作为粘接件树脂和能量导向器的对比研究
Ultrasonic welding of thermoplastic composites: A comparison between polyetheretherketone and low-melt polyaryletherketone as resin in the adherends and energy directors
Camila Belo Gomes Brito, Julie Teuwen, Clemens Dransfeld, Irene Fernández Villegas · Delft University of Technology
摘要整理
本研究评估了复合材料粘接件和能量导向器中使用的热塑性树脂对平行和错位配置下超声焊接过程的影响。采用聚醚醚酮（PEEK）和低熔点聚芳醚酮（LMPAEK）两种树脂，通过动态力学分析和调制差示扫描量热法表征其热机械性能。在平行粘接件配置下，焊接时间和粘接件厚度方向加热均无显著差异，这归因于PEEK能量导向器的较大热容量抵消了其更高的粘弹性发热速率。在错位粘接件配置下，PEEK焊接件的焊接时间大于LMPAEK焊接件，而LMPAEK粘接件表现出更大的厚度方向加热。这些差异源于碳纤维增强/LMPAEK粘接件的较大本体粘弹性发热速率与LMPAEK较低热容量的叠加效应。研究表明：超声焊接可应用于不同热塑性树脂的复合材料；不同的损耗模量和热容量显著影响复合材料超声焊接过程；树脂结晶度间接影响焊接工艺；平行粘接件受树脂类型影响小于错位粘接件；粘接件纤维体积分数对错位粘接件超声焊接有重要影响。
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