塑料科技2025，Vol.53Issue(1)：98-102,5.DOI:10.15925/j.cnki.issn1005-3360.2025.01.018
亚麻纤维/聚乳酸复合材料的力学性能、热稳定性及降解性能研究
Study on Mechanical properties,Thermal Stability and Degradation Performance of Polylactic Acid Bacteria/Flax Fiber Composites
王刚 1王利平2
作者信息
- 1. 包头轻工职业技术学院,内蒙古包头 014035
- 2. 内蒙古工业大学,内蒙古呼和浩特 010080
- 折叠
摘要
Abstract
Flax fibers with a mass fraction of 0～40%were incorporated into polylactic acid(PLA)composites.Based on the pre-mixing of grinding extrusion(GE)and internal mixing(IM)processes,injection molding was used to prepare flax fiber/polylactic acid(PLA)composites.The results show that the incorporation of flax fibers can significantly improve the mechanical properties and biodegradability of the composites,with no significant effect on thermal stability.The composites obtained by the IM process have more excellent mechanical properties and biodegradability than those obtained by the GE process.The 40%L/PLA-IM composite has the optimal mechanical properties and biodegradability.The tensile strength is 63.5 MPa,the elasticity modulus is 2.56 GPa,the flexural modulus is 3.49 GPa,the impact strength is 5.58 kJ/m2,the water absorption rate after 20 days of degradation is 126%,the weight loss rate after 20 days of degradation is 84.1%,and the lactic acid production after 20 days of degradation is 36.2 mL.The preparation of flax fiber/PLA composites using the IM process is feasible.关键词
聚乳酸/亚麻纤维/辊磨挤出/密炼混合Key words
Polylactic acid/Flax fiber/Grinding extrusion/Internal mixing分类
通用工业技术引用本文复制引用
王刚,王利平..亚麻纤维/聚乳酸复合材料的力学性能、热稳定性及降解性能研究[J].塑料科技,2025,53(1):98-102,5.
