工艺与制造英文2025
3D打印过程中连续碳纤维铺层对拉伸性能的增强研究
Tensile Property Enhancement by Laying the Continuous Carbon Fiber during 3D Printing Process
Wongsathorn Rattanapreechachai, Kanjanabhorn Chansoda, Watcharapong Chookaew · Mahidol University
摘要整理
熔融沉积成型(FDM)是增材制造领域的广泛应用技术。3D打印的主要局限在于材料成本高昂且强度相比传统成型工艺较低。支撑材料因挤出工艺的特殊性导致成本更加昂贵，而3D打印件固有的高表面粗糙度是其机械性能较弱的主要原因。为解决上述问题，本研究引入了颗粒型3D打印机与纤维铺层技术相结合的方案。研究结果表明，颗粒型打印机制备的样品在机器方向上获得最高的机械强度，但在其他光栅角度下拉伸强度出现下降。通过对比不同碳纤维(CF)形式的差异，发现短切纤维在提高打印件强度方面效果不佳，而铺层织物类型和连续纤维能够显著改善机械性能。在分析最大强度与纤维质量比值时，连续纤维表现出最高的增强效率。研究表明，采用连续碳纤维铺层技术可有效提升3D打印复合材料的力学性能，为增材制造工艺的优化提供了新的思路。
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