中国农业科技导报2025，Vol.27Issue(2)：192-200,9.DOI:10.13304/j.nykjdb.2023.0857
生物炭含量对园林绿化废弃物/聚乳酸复合材料物理力学性能影响
Effect of Biochar Content on Physical and Mechanical Properties of Garden Greening Waste/polylactic Acid Composites
摘要
Abstract
In order to realize the high-value utilization of landscaping waste and broaden the use of wood-plastic composites,taking landscaping waste and polylactic acid as raw materials and biochar as reinforcing agent,4 factors were selected,namely,poplar wood powder content,molding temperature,molding pressure and holding time,to carry out Box-Benhnken test.The response surface method was used to optimize the molding process parameters for wood-plastic composites,and the effect of biochar content on the physical and mechanical properties of the composites was investigated.The results showed that the optimal process parameters were 41.31%of poplar wood powder content,170℃molding temperature,11.49 MPa molding pressure and 10 min of holding time.The addition of biochar could improve the interfacial compatibility between wood powder and polylactic acid and improve the mechanical properties of the composites,and the mechanical properties of the composites were firstly increased and then decreased with the increase of biochar content.When the content of biochar was 2.0%,the flexural strength,flexural modulus and impact strength were 32.00 MPa,3.20 GPa and 3.47 kJ·m-2,respectively,and the water absorption was the smallest,the apparent porosity was the lowest,and the composite mechanical properties of the composites were the best.Above results provided a basis for biochar to improve the properties of wood-plastic composites.关键词
园林绿化废弃物/响应面法/木塑复合材料/生物炭含量/物理力学性能Key words
garden greening waste/response surface methodology/wood-plastic composites/biochar content/physical and mechanical properties分类
通用工业技术引用本文复制引用
张如艳,李绅昊,朱奇鹏,冯太纲,李红波,邢泽炳,羡瑜..生物炭含量对园林绿化废弃物/聚乳酸复合材料物理力学性能影响[J].中国农业科技导报,2025,27(2):192-200,9.基金项目
山西省基础研究计划项目(202303021221090) （202303021221090）
山西省回国留学人员科研资助项目(2021-075). （2021-075）
