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聚丁二酸丁二醇酯对聚乳酸基木塑复合材料性能的影响

刘杰 赵雪松 李奇 韦东山 雷志涛 张志远

刘杰, 赵雪松, 李奇, 等. 聚丁二酸丁二醇酯对聚乳酸基木塑复合材料性能的影响[J]. 复合材料学报, 2024, 41(5): 2445-2454. doi: 10.13801/j.cnki.fhclxb.20230831.002
引用本文: 刘杰, 赵雪松, 李奇, 等. 聚丁二酸丁二醇酯对聚乳酸基木塑复合材料性能的影响[J]. 复合材料学报, 2024, 41(5): 2445-2454. doi: 10.13801/j.cnki.fhclxb.20230831.002
LIU Jie, ZHAO Xuesong, LI Qi, et al. Effect of polybutylene succinate on properties of polylactic acid-based wood-plastic composites[J]. Acta Materiae Compositae Sinica, 2024, 41(5): 2445-2454. doi: 10.13801/j.cnki.fhclxb.20230831.002
Citation: LIU Jie, ZHAO Xuesong, LI Qi, et al. Effect of polybutylene succinate on properties of polylactic acid-based wood-plastic composites[J]. Acta Materiae Compositae Sinica, 2024, 41(5): 2445-2454. doi: 10.13801/j.cnki.fhclxb.20230831.002

聚丁二酸丁二醇酯对聚乳酸基木塑复合材料性能的影响

doi: 10.13801/j.cnki.fhclxb.20230831.002
基金项目: 内蒙古农业大学学科交叉基金项目(BR231403);内蒙古自治区科技计划项目(2021GG0075);国家自然科学基金(31660177)
详细信息
    通讯作者:

    李奇,博士,教授,博士生导师,研究方向为生物质复合材料 E-mail: li_qi555@163.com;

    韦东山,博士,讲师,研究方向为植被配置与结构优化 E-mail: wdsh0812@sina.com

  • 中图分类号: TB332

Effect of polybutylene succinate on properties of polylactic acid-based wood-plastic composites

Funds: Interdisciplinary Research Fund Project of Inner Mongolia Agricultural University (BR231403); Science and Technology Plan Project of Inner Mongolia Autonomous Region (2021GG0075); National Natural Science Foundation of China (31660177)
  • 摘要: 为解决聚乳酸(PLA)基木塑复合材料制备成本高、韧性和耐热性差等问题,以可降解树脂聚丁二酸丁二醇酯(PBS)作为改性树脂,与沙柳木粉(WF)和PLA共混复合,通过模压法制备环境友好型PBS-WF/PLA三元可降解木塑复合材料。研究结果表明:PBS的加入,可使复合材料的韧性、耐热性及热稳定性提高,但强度和刚度下降。当PBS加入量为树脂总量的50wt%时,PBS-WF/PLA复合材料的综合性能相对较佳,与WF/PLA相比,生产成本降低约20%,PBS-WF/PLA的静曲强度、弹性模量和拉伸强度的保持率分别为86.5%、63.8%和73.1%,冲击强度提高40.1%,维卡软化温度、热变形温度和第二阶段热分解起始温度分别升高37.1℃、53.7℃和4.1℃。

     

  • 图  1  PBS-WF/PLA复合材料的制备流程图

    Figure  1.  Flow chart of preparation of PBS-WF/PLA composites

    图  2  PBS加入量对PBS-WF/PLA复合材料力学性能的影响

    Figure  2.  Effect of PBS content on mechanical properties of PBS-WF/PLA composites

    图  3  PBS加入量对PBS-WF/PLA复合材料的储能模量和损耗模量的影响

    Figure  3.  Effect of PBS content on storage modulus and loss modulus of PBS-WF/PLA composites

    图  4  PBS加入量对PBS-WF/PLA复合材料维卡软化温度和热变形温度的影响

    Figure  4.  Effect of PBS content on Vicat softening temperature and thermal deformation temperature of PBS-WF/PLA composites

    图  5  不同PBS加入量PBS-WF/PLA复合材料的TG曲线

    Figure  5.  TG curves of PBS-WF/PLA composites with different PBS contents

    图  6  纯PLA、纯PBS和不同PBS加入量下PBS-WF/PLA样品的冲击断面微观形貌

    Figure  6.  Microstructure of impact fracture surface of pure PLA, pure PBS and PBS-WF/PLA samples with different PBS additions

    表  1  聚丁二酸丁二醇酯(PBS)-沙柳木粉(WF)/聚乳酸(PLA)复合材料配方

    Table  1.   Formula of polybutylene succinate (PBS)-Salix powder (WF)/polylactic acid (PLA) composites

    Sample PBS/
    wt%
    PLA/
    wt%
    WF/
    wt%
    KH-550/
    wt%
    Stearic
    acid/wt%
    PBS-WF/PLA 0 100 50 3 0.6
    10 90 50 3 0.6
    20 80 50 3 0.6
    30 70 50 3 0.6
    40 60 50 3 0.6
    50 50 50 3 0.6
    100 0 50 3 0.6
    Note: KH-550—γ-aminopropyltriethoxysilane.
    下载: 导出CSV

    表  2  PBS加入量对PBS-WF/PLA复合材料的损耗模量特征值的影响

    Table  2.   Effect of PBS content on the loss modulus of PBS-WF/PLA composites

    PBS/wt%Maximum internal friction/MPaInternal friction peak temperature/℃
    0 897.6 60.6
    10 721.7 60.1
    20 572.8 60.0
    30 474.7 59.6
    40 407.8 59.5
    50 332.0 59.4
    100
    下载: 导出CSV

    表  3  PBS-WF/PLA复合材料的TG曲线特征值

    Table  3.   Characteristic value of TG curve of PBS-WF/PLA composites

    PBS/
    wt%
    Initial temperature
    of the second stage of
    mass loss/℃
    Mass loss
    termination
    temperature/℃
    Total mass
    loss rate/%
    0 320.0 366.8 86.3
    10 320.9 367.9 87.9
    20 321.8 369.1 87.4
    30 322.5 372.3 87.0
    40 322.9 380.0 86.7
    50 324.1 388.5 86.6
    100 346.2 406.0 90.7
    下载: 导出CSV
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  • 收稿日期:  2023-07-06
  • 修回日期:  2023-08-03
  • 录用日期:  2023-08-20
  • 网络出版日期:  2023-08-31
  • 刊出日期:  2024-05-01

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