塑料科技2025，Vol.53Issue(4)：118-123,6.DOI:10.15925/j.cnki.issn1005-3360.2025.04.021
用于3D打印的纳米二氧化硅增强增韧聚乳酸的制备与性能研究
Preparation and Properties Study of Nanosilica-enhanced Toughened Polylactic Acid for 3D Printing
吕旭彦 1路学成 1张志强 1肖玉洁 1王海军1
作者信息
- 1. 中国民航大学航空工程学院,天津 300300
- 折叠
摘要
Abstract
Nanoparticles of silica(SiO2)were used as an additive and blended with a polylactic acid(PLA)matrix to prepare PLA/SiO2 core-shell particles.The modified particles were then melt-blended to fabricate 3D printing filaments and standard specimens.The effects of the content of nano-SiO2 on the mechanical properties,microstructure,and crystallinity of PLA were investigated.The results showed that when the mass fraction of nano-SiO2 was 1.5%,the mechanical properties of the composite were optimal,with the tensile strength and elongation at break increasing by 45%and 16%,respectively.Scanning electron microscopy(SEM)analysis revealed that the fracture surface of the composite shifted from brittle to ductile,indicating that the modified composite tended to become tougher.Differential scanning calorimetry(DSC)analysis showed that the addition of nano-SiO2 shifted the cold crystallization peak of the composite to a lower temperature region,which promoted the nucleation and crystallization of PLA and increased the crystallinity of the composite.关键词
聚乳酸/纳米SiO2/熔融共混/力学性能/结晶度Key words
Polylactic acid/Nano-SiO2/Melt blending/Mechanical properties/Crystallinity分类
化学化工引用本文复制引用
吕旭彦,路学成,张志强,肖玉洁,王海军..用于3D打印的纳米二氧化硅增强增韧聚乳酸的制备与性能研究[J].塑料科技,2025,53(4):118-123,6.
