纳米二氧化钛(TiO2)对PP/PE复合纤维性能的影响
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杨飞(1995-),女,硕士研究生,研究方向为渔具材料,E-mail:279600721@qq.com

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Effect of nano titanium dioxide on properties of PP/PE composite fibers
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    本研究采用聚乙烯(PE)、聚丙烯(PP)和二氧化钛纳米颗粒(TiO2)熔融混纺,制备了PP/PE/TiO2复合纤维,研究了TiO2含量对复合纤维结构、动态力学性能和力学性能及光催化降解性能的影响。结果表明,TiO2作为微聚集体均匀地分散在复合纤维基质中,随TiO2含量增加,聚集体尺寸越大。TiO2的加入对复合纤维的熔融温度(Tm)无显著影响,少量TiO2(0.5%)具有成核促进作用,提高结晶速率,使结晶度增大。随着TiO2含量增加,复合纤维的断裂强度和结节强度先增加后降低,少量TiO2对复合纤维具有增强增韧的作用。光降解200h后,复合纤维的断裂强度、结节强度损失率与TiO2含量的变化趋于正相关关系,随TiO2含量增加,复合纤维力学性能显著降低,断裂强度、结节强度损失率显著增加,光降解性能增强。本研究结果有助于可降解渔用材料性能的优化,拓展可降解渔用材料的应用,为制备性能优异的可降解渔用材料提供参考。[中国渔业质量与标准,2024,14(2):28-34]

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    PP/PE/TiO2composite fibers were prepared by melt blending of polyethylene (PE), polypropylene (PP) and titanium dioxide nanoparticles (TiO2). The effects of TiO2 content on the structure, dynamic and mechanical properties of the composite fibers and photocatalytic degradation properties were investigated. The results showed that TiO2is uniformly dispersed in the composite fiber matrix as micro-aggregates, and the aggregate size increased with the increase of TiO2 content. The addition of TiO2 had no significant effect on the melting temperature (Tm) of the composite fibers, and a small amount of TiO2 had the effect of promoting nucleation, increasing the crystallization rate and increasing the crystallinity. With the increase of TiO2content, the breaking strength and knotting strength of the composite fibers first increased and then decreased, and a small amount of TiO2had the effects of strengthening and toughening the composite fibers. After photodegradation for 200 h, the breaking strength of the composite fibers, the nodule strength loss rate and the TiO2 content tended to be linear. With the increase of TiO2content, the mechanical properties of the composite fibers decreased significantly, the breaking strength and knotting strength loss rate increased significantly, and the photodegradation performance was enhanced.[Chinese Fishery Quality and Standards,2024,14(2):28-34]

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杨飞,余雯雯.纳米二氧化钛(TiO2)对PP/PE复合纤维性能的影响[J].中国渔业质量与标准,2024,(2):28-34. YANG Fei, YU Wenwen. Effect of nano titanium dioxide on properties of PP/PE composite fibers[J]. Chinese Fishery Quality and Standards,2024,(2):28-34.

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  • 收稿日期:2023-06-19
  • 最后修改日期:2023-12-21
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  • 在线发布日期: 2024-05-31