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。
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 byα-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-αaddition 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.
作者
曹永建
王颂
张春花
江子晴
王利华
马红霞
李兴伟
CAO Yongjian;WANG Song;ZHANG Chunhua;JIANG Ziqing;WANG Lihua;MA Hongxia;LI Xingwei(Guangdong Academy of Forestry/Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization,Guangzhou,Guangdong 510520,China;Guangdong Provincial Forestry Technology Extension Station,Guangzhou,Guangdong 510173,China;Guangdong Eco-engineering Polytechnic,Guangzhou,Guangdong 510520,China;Shimadzu(China)Co.Ltd.,Guangzhou,Guangdong 510010,China)
出处
《林业与环境科学》
2020年第3期1-9,共9页
Forestry and Environmental Science
基金
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)。
关键词
木粉
聚乳酸
3D打印用线材
性能分析
拉伸强度
wood flour
polylactic acid(PLA)
3D printing filament
properties analysis
tensile strength
