幽灵渔具问题驱动下的中国网具材料研究进展

    Progress in Chinese netting material research driven by ghost gear issues

    • 摘要:
      背景 网具材料是影响海洋捕捞效率与养殖装备稳定性的关键因素。聚乙烯(PE)、聚酰胺(PA)等传统网具材料进入海洋环境后难以自然降解且长期滞留,由此引发的“幽灵捕捞”现象受到广泛关注。
      分析 本文围绕幽灵渔具问题,对网具材料由天然纤维向高性能合成纤维,再向功能化与绿色化材料的发展演变过程进行了梳理,分析了PE、PA、超高分子量聚乙烯(UHMWPE)、聚丙烯(PP)及聚酯等材料在渔具中的应用特点、适用范围及其风险特点,并对防污涂层、铜合金网衣、耐老化改性以及可生物降解材料等方面的研究进行了总结。
      展望 当前网具材料领域仍存在一些关键性的技术难题,包括部分可降解材料力学性能不足、网衣长效防污体系环境适应性有限,以及深远海复杂海况条件下网具材料易发生蠕变和疲劳损伤等。未来研究应进一步考虑网具材料力学性能、生态环境效应与工程经济性之间的协同关系,重点加强极端海洋环境下网具材料长期服役行为研究,从而提高网具材料在工程应用中的可靠性和对海洋环境的适应性。

       

      Abstract:
      Objective Netting materials are critical factors affecting the efficiency of marine fishing and the stability of aquaculture equipment. Traditional netting materials such as polyethylene (PE) and polyamide (PA) are difficult to degrade naturally in marine environments, leading to long-term persistence and widespread concern over “ghost fishing”.
      Analysis This paper reviews the evolution of netting materials from natural fibers to high-performance synthetic fibers, and further to functionalized and eco-friendly materials, focusing on ghost fishing issues. It analyzes the application characteristics, suitable ranges, and key points of risk control of various materials—including PE, PA, ultra-high-molecular-weight polyethylene (UHMWPE), polypropylene (PP), and polyester—in fishing gear, and summarizes research progress in areas such as anti-fouling coatings, copper alloy nets, aging-resistant modifications, and biodegradable materials.
      Prospect Several key technical challenges remain in the field, including insufficient mechanical properties of some biodegradable materials, limited environmental adaptability of long-lasting anti-fouling systems, and susceptibility of netting materials to creep and fatigue damage under complex deep-sea conditions. Future research should further consider the synergistic relationship among mechanical performance, ecological impact, and engineering economics, with a focus on enhancing understanding of the long-term service behavior of netting materials under extreme marine conditions, thereby improving their reliability and adaptability in practical applications.

       

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