核壳结构nano-CaCO3／POE复配体系改性渔用聚乙烯复合材料的制备及性能  

Preparation and performance of fishery polyethylene composites modified by core-shell structure nano-CaCO_3/POE

作　　者：曾桂华[1] 陈龙[1] 闵明华[2] 王鲁民[2] ZENG Gui-hua CHEN Long MIN Ming-hua WANG Lu-min(State Key Laboratory for Modificatiom of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China Key Laboratory of East China Sea ＆ Oceanic Fishery Resources Exploitation and Utilization of Ministry of Agriculture, East China Sea fisheries Research Institute, Chincse Academy of Fishery Sciences, Shanghai 200090, China)

机构地区：[1]东华大学材料科学与工程学院纤维材料改性国家重点实验室,上海201620 [2]农业部东海与远洋渔业资源开发利用重点实验室,中国水产科学研究院东海水产研究所,上海200090

出　　处：《海洋渔业》2016年第6期670-679,共10页Marine Fisheries

基　　金：国家自然科学基金项目(31302230);中国水产科学研究院基本科研业务费专项项目(2014A10YQ01);国家海洋经济创新发展区域示范专项资助(GD2013-D01-001);中央级公益性科研院所基本科研业务费专项资金资助项目(东海水产研究所2012M02)

摘　　要：以纳米碳酸钙／L烯辛烯共聚物（nano—CaCO3／POE）复配体系为改性剂，采用两种共混工艺，调节nano—CaCO3／POE复配体系在渔用高密度聚乙烯（HDPE）基体中的含量，制备了核壳结构nano—CaC03／POE复配体系改性渔用聚乙烯三元复合材料（nano—CaCO3／POE／HDPE），研究了共混工艺、复配体系配比及其含量对nano—CaCO3／POE／HDPE三元纳米复合材料微观形态结构和宏观力学性能的影响。结果表明，当复配体系中nano—CaCO3和POE质量比为1：4时，两步法共混工艺可使nano-CaCO3与POE在聚乙烯基体中形成nano—CaCO3为核、POE为壳的核壳结构，且该核壳结构由POE包裹2—3颗nano—CaCO3粒子组成，尺寸为100—200nm，均匀分散于聚乙烯基体中。此外，当核壳结构nano—CaCO3／POE复配体系的含量为5％时，所制备的nano—CaCO3／POE／HDPE三元复合材料的综合力学性能最优，与纯HDPE相比，其断裂强度、屈服强度和断裂伸长率分别提高了37．2％、5．1％和27．0％。High density polyethylene （HDPE） is widely used in fishery for its light weight, excellent wear resistance and low price. With the development of distant water fishery, the fishing materials have a higher demand for its overall performance, especially toughness. In an attempt to solve the above problems, nanosize calcium carbonate （nano-CaCO3 ） and ethylene-octene eopolymer （POE） composites were prepared firstly, and then used to modify the HDPE. The nano-CaCO3/POE/HDPE ternary composites were prepared by mixing nano-CaCO3/POE with HDPE at different mass ratios by two different blending processes. The effects of the blending processes, mass ratios of nano-CaCO3/POE, and the mass ratios of nano-CaCO3/POE in the ternary composites on the properties of the ternary composites were investigated systematically. It was observed that the distribution of nano-CaCO3/POE composites were more homogeneous in the ternary composites fabricated by the two-step method. And the nano-CaCO3/POE nanopartieles with core-shell structure of 100- 200 nm in size were well distributed in HDPE when the mass ratio of nano-CaCO3 and POE was 1 ： 4. In addition, the ternary composites obtained optimal mechanical properties when the mass ratio of nano-CaCO3/ POE in the ternary composites was 5%. The fracture strength, yield strength and elongation of break increased by 37.2%, 5.1% , and 27.0% , compared with pure HDPE, respectively.

关 键 词：纳米复合材料 渔用聚乙烯 纳米碳酸钙 乙烯辛烯共聚物 力学性能 

分 类 号：S971.1[农业科学—捕捞与储运]