期刊论文

Preparation and process optimization of 3D printing composite wire based on pennisetum fiber

中文

中南林业科技大学学报

1673-923X

2021

41

9

166-178

10.14067/j.cnki.1673-923x.2021.09.018

湖南省重点研发计划项目（2019GK2244）； 湖南省自然科学基金/常德市联合基金项目（2020JJ6065）； 湖南省交通运输厅科技进步与创新项目（201731）；

本校为第一机构

【目的】拓展狼尾草的高值清洁利用领域,丰富FDM 3D打印耗材品种,制备具有木质感的3D打印复合线材。【方法】以狼尾草纤维为基材,经改性后与聚乳酸（PLA）复合,采用挤出法制备1.75 mm规格3D打印狼尾草/PLA复合线材,并通过3D打印实践优化3D打印工艺参数;借助Design Expert软件优化狼尾草纤维改性碱处理工艺;利用ANSYS FLUENT软件对狼尾草/PLA复合线材挤出熔融段流场进行数值模拟,分析其初始加热温度、螺杆转速和机筒温度等工艺参数对线材挤出过程的影响,进而优化线材挤出工艺;借助扫描电子显微镜（SEM）分析狼尾草/PLA复合材料断口形貌特征,解析其强韧化成因。【结果】狼尾草纤维的最优碱处理工艺...

【Objective】To expand the field of high-value clean utilization of Pennisetum,enrich the varieties of FDM 3D printing consumables,and prepare 3D printing composite wire with woodiness.【Method】Pennisetum fiber was used as the base material,which was modified and compounded with polylactic acid (PLA).Pennisetum/PLA composite wire with 1.75mm size was prepared by extrusion method,and the 3D printing process parameters were optimized through 3D printing practice.Design Expert software was used to optimize the alkali treatment process of penniset...