【作者】 余雯雯； 王鲁民； 石建高；

【Author】 Wenwen Yu;Luming Wang;Jiangao Shi;East China Sea Fisheries Research Institute, Chinese Academy Fishery Sciences;

【机构】 中国水产科学研究院东海水产研究所；

【摘要】 聚乙烯树脂以其强度高、重量轻及性价比高等优点,已广泛应用于渔用领域,但目前水产养殖用普通聚乙烯纤维网衣材料仍存在易于破损和海洋污损等主要问题。本文以表面改性纳米铜粒子(nano-Cu)复合改性高密度聚乙烯(HDPE)单丝,经熔融纺丝-多级牵伸工艺制备nano-Cu/HDPE纳米复合单丝。采用动态力学分析、扫描电镜等主要测试方法,研究nano-Cu含量(0.5~5 wt%)对纳米复合单丝的形态结构与性能影响规律及海水中Cu离子释放特征。结果表明,经表面改性后的nano-Cu粒子在HDPE基体中分散均匀。随nano-Cu含量的增加,nano-Cu/HDPE纳米复合单丝的Tg降低,动态拉伸模量和最大损耗因子增大。与纯HDPE单丝相比,nano-Cu/HDPE纳米复合单丝的断裂强度增加而结节强度略有下降。nano-Cu(5 wt%)/HDPE纳米复合单丝置于海水中铜离子释放速率为8.5μg/d。更多还原

【Abstract】 Polyethylene is widely used in fishery because of its high strength, lightweight and cost-effectiveness. However, there are also the problems such as easy to damage and marine fouling for ordinarypolyethylenefiber net in aquaculture. High density polyethylene(HDPE) nanocomposite monofilaments filled with Cu Nanoparticles(nano-Cu) are prepared by melt-spinning and multistage drawing process. The effect of nano-Cu content(0.5~5 wt%) on the morphology, structure and property of nanocomposite monofilaments is investigated by dynamic mechanical analysis and a combination of other advancing testing methods. The result showed that most of the surface modified nano-Cu dispersed homogeneously in HDPE matrix. Tg of nano-Cu/HDPE nanocomposite monofilaments decreased while the dynamical storage modulus and maximum loss factor increased with increasing nano-Cu content. The break strength was improved and Knot breaking strength decreased slightly by introducing nano-Cu. Moreover, the rate of copper ion release is 8.5 μg/d for nano-Cu(5 wt%)/HDPE nanocomposite monofilaments in seawater.更多还原