| 摘要: |
| 以木粉和聚乳酸为主体原料，硅烷类 KH560 等为偶联剂，PE 蜡 + 硬脂酸锌、甘油为润滑剂，
制备出木粉 / 聚乳酸 3D 打印用线材。对不同组合条件下制备出的线材其微观构造、热稳定性、官能团变
化以及拉伸强度进行了分析。结果表明，木粉粒径为 80-100 目时较为合适，铝钛酸酯 α（AlTi-α）型
对木粉表面改性效果较好，甘油对二者界面相容性的效果好于 PE 蜡 + 硬脂酸锌。木粉含量为 20%、PLA
含量为 75%、铝钛酸酯 α 型加入量为 1.5%，甘油加入量为 3.5% 时制备出来的线材，拉伸强度可达到
18.97 MPa。木粉 / 聚乳酸 3D 打印线材可生物降解，性能可控，具有广阔的应用前景。 |
| 关键词: 木粉 聚乳酸 3D打印用线材 性能分析 拉伸强度 |
| DOI： |
| 分类号: |
| 基金项目:广东省林业科技创新项目（2016KJCX038）、中央财政林业科技推广示范项目（〔2016〕GDTK - 06 号） |
|
| Manufacture and Performance Analysis of Wood flour-Filled Polylactic Acid Composite Filament for 3D printing |
|
Cao Yongjian,Wang Song,ZHANG Chunhua,JIANG Ziqing,WANG Lihua,1,1
|
|
1.Guangdong Academy of Forestry;2.Guangdong Eco-engineering Polytechnic
|
| Abstract: |
| A biodegradable composite was manufactured by mixed wood flour and polylactic acid, PE wax
and zinc stearate glycerol as lubricant, and silane (KH560) and other three chemical reagents as coupling agents,
for fused deposition modeling 3D printing filament. The microstructure, thermostability, chemical functional
groups and tensile strength of the composite were analyzed, respectively. The results show that the particle size
distribution range of wood flour from 80 to 100 meshes is suited to manufacture 3D printing filaments. The most
smoothly interface of the composite was produced by α-aluminum titanate (AlTi-α) than by other three kind of
coupling agents. The effect of glycerol on the interfacial compatibility was better than that of a mixture of PE wax
and zinc stearate. The tensile strength of the filament prepared with wood flour content of 20%, PLA content of
75%, AlTi-α addition amount of 1.5%, and glycerol addition amount of 3.5% can reach 18.97 MPa. Wood flourfilled polylactic acid composite filament is biodegradable and its properties can be controlled by adjusting the
percentage of constituent. This kind of composite filament has a great potential for future applications in fused
deposition modeling 3D printing. |
| Key words: wood flour polylactic acid (PLA) 3D printing filament properties analysis tensile strength |
