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麦秸/聚氯乙烯复合材料新疆户外老化性能

祁睿格 何春霞 晋强

祁睿格, 何春霞, 晋强. 麦秸/聚氯乙烯复合材料新疆户外老化性能[J]. 复合材料学报, 2020, 37(7): 1539-1546. doi: 10.13801/j.cnki.fhclxb.20191113.003
引用本文: 祁睿格, 何春霞, 晋强. 麦秸/聚氯乙烯复合材料新疆户外老化性能[J]. 复合材料学报, 2020, 37(7): 1539-1546. doi: 10.13801/j.cnki.fhclxb.20191113.003
QI Ruige, HE Chunxia, JIN Qiang. Outdoor exposure aging performance of wheat straw/polyvinyl chloride composites in Xinjiang[J]. Acta Materiae Compositae Sinica, 2020, 37(7): 1539-1546. doi: 10.13801/j.cnki.fhclxb.20191113.003
Citation: QI Ruige, HE Chunxia, JIN Qiang. Outdoor exposure aging performance of wheat straw/polyvinyl chloride composites in Xinjiang[J]. Acta Materiae Compositae Sinica, 2020, 37(7): 1539-1546. doi: 10.13801/j.cnki.fhclxb.20191113.003

麦秸/聚氯乙烯复合材料新疆户外老化性能

doi: 10.13801/j.cnki.fhclxb.20191113.003
基金项目: 国家科技支撑计划(2011BAD20B202-2);中央高校基本科研业务费专项资金(Y0201800586);自治区区域协同创新专项(科技援疆计划)(2019E0241)
详细信息
    通讯作者:

    何春霞,教授,研究方向为新型工程材料、木塑复合材料 E-mail:chunxiahe@hotmail.com

  • 中图分类号: TB332

Outdoor exposure aging performance of wheat straw/polyvinyl chloride composites in Xinjiang

  • 摘要: 为探讨新疆强紫外线与干热环境对木塑复合材料抗老化性能的影响,添加不同种类抗老剂(UV-531、1010和168),采用挤出成型制备麦秸/聚氯乙烯(PVC)复合材料,进行90天新疆户外老化。测试和分析麦秸/PVC复合材料老化前后表面官能团和颜色变化、表面形貌和力学性能,计算羰基指数、木质素指数和表面粗糙度。结果表明:老化后表面麦秸纤维与PVC发生分解,出现褪色现象,粗糙度升高,力学性能下降。抗老剂均能提高麦秸/PVC复合材料的抗老化性能。其中,添加抗老剂UV-531的麦秸/PVC复合材料效果最优,与对照组相比,其羰基指数提高了19.27%,木质素指数降低了4.44%,色差ΔE降低了11.12%,表面粗糙度Sa降低了33.38%,弯曲强度和拉伸强度分别提高了5.87%和6.44%,表面更平整,麦秸裸露少。该研究结果可为提高木塑复合材料抗老化效力提供试验数据和理论参考,有利于延长木塑复合材料在新疆干热环境下的使用寿命。

     

  • 图  1  老化期间乌鲁木齐市室外温度曲线

    Figure  1.  Urumqi outdoor temperature curves during aging

    图  2  添加不同抗老剂的麦秸/PVC复合材料新疆户外老化前后表面的FTIR图谱

    Figure  2.  FTIR spectra of wheat straw/PVC composites with different anti-aging agent before and after aging in Xinjiang

    图  3  添加不同抗老剂的麦秸/PVC复合材料新疆户外老化前后表面羰基指数和木质素指数

    Figure  3.  Surface carbonyl index and lignin index of wheat straw/PVC composites with different anti-aging agents before and after aging in Xinjiang

    图  4  添加不同抗老剂的麦秸/PVC复合材料新疆户外老化前后表面粗糙度

    Figure  4.  Surface roughness of wheat straw/PVC composites with different anti-aging agents before and after aging in Xinjiang

    图  5  添加不同抗老剂的麦秸/PVC复合材料新疆户外老化前后表面激光显微镜图像

    Figure  5.  Laser microscope images of wheat straw/PVC composites surface with different anti-aging agents before and after aging in Xinjiang

    图  6  添加不同抗老剂的麦秸/PVC复合材料新疆户外老化前后弯曲强度和拉伸强度

    Figure  6.  Flexural strength and tensile strength of wheat straw/PVC composites with different anti-aging agents before and after aging in Xinjiang

    表  1  添加不同抗老剂麦秸/聚氯乙烯(PVC)复合材料原材料配比(与PVC质量比)

    Table  1.   Formulations of wheat straw/polyvinyl chloride(PVC) composites with different anti-aging agents (mass ratio to PVC) %

    No.Wheat strawPVCCa-Zn stabilizerMaleic anhydride grafted PVCPolyethylene waxUV-5311681010
    WFPC 100 100 8 3 5 0 0 0
    531WFPC 100 100 8 3 5 2 0 0
    168WFPC 100 100 8 3 5 0 2 0
    1010WFPC 100 100 8 3 5 0 0 2
    Notes: WFPC—Wheat straw/PVC composites without anti-aging; 531WFPC, 168WFPC and 1010WFPC—Wheat straw/PVC composites with anti-aging UV-531, 168 or 1010, respectively.
    下载: 导出CSV

    表  2  添加不同抗老剂的麦秸/PVC复合材料新疆户外老化后表面色差

    Table  2.   Surface color difference of wheat straw/PVC composites with different anti-aging agents after aging in Xinjiang

    Aging time/dΔa*Δb*ΔL*ΔE
    WFPC 30 −3.75 −3.20 38.63 42.88
    60 −4.88 −6.11 46.29 49.95
    90 −6.28 −8.12 52.85 53.85
    168WFPC 30 −2.84 −0.87 37.96 38.08
    60 −4.29 −5.91 45.55 46.07
    90 −4.89 −6.81 50.25 51.03
    531WFPC 30 −2.38 −2.13 34.55 38.08
    60 −3.49 −4.43 44.35 46.07
    90 −3.68 −5.45 47.14 51.03
    1010WFPC 30 −3.26 −2.25 38.20 38.41
    60 −4.54 −5.28 45.02 45.56
    90 −4.76 −6.95 50.44 51.23
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-07-28
  • 录用日期:  2019-10-08
  • 网络出版日期:  2019-11-13
  • 刊出日期:  2020-07-15

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