文章摘要
余雯雯,石建高,陈晓雪,闵明华,王鲁民,宋伟华.MHMWPE/iPP/EPDM渔用单丝的力学性能与动态力学行为[J].水产学报,2017,41(3):473~479
MHMWPE/iPP/EPDM渔用单丝的力学性能与动态力学行为
The mechanical properties and dynamic mechanical behavior of MHMWPE/iPP/EPDM fishery monofilaments
投稿时间:2016-01-29  修订日期:2016-10-08
DOI:10.11964/jfc.20160110270
中文关键词: 渔用单丝  共混  结构  动态力学行为  力学性能
英文关键词: fishery monofilament  blend  structure  dynamic mechanical behavior  mechanical property
基金项目:中央级公益性科研院所基本科研业务费专项(2015T01);国家科技支撑计划(2013BAD13B02);水产浙江省一流学科开放课题(20160014)
作者单位E-mail
余雯雯 浙江海洋大学浙江省海洋渔业装备技术研究重点实验室, 浙江 舟山 316022
中国水产科学研究院东海水产研究所, 上海 200090 
 
石建高 中国水产科学研究院东海水产研究所, 上海 200090 jiangaoshi666@163.com 
陈晓雪 中国水产科学研究院东海水产研究所, 上海 200090  
闵明华 中国水产科学研究院东海水产研究所, 上海 200090  
王鲁民 中国水产科学研究院东海水产研究所, 上海 200090  
宋伟华 浙江海洋大学浙江省海洋渔业装备技术研究重点实验室, 浙江 舟山 316022  
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中文摘要:
      采用中高分子量聚乙烯(MHMWPE)、等规聚丙烯(iPP)、乙丙橡胶(EPDM)进行熔融共混、纺制MHMWPE/iPP/EPDM渔用共混单丝,研究iPP和EPDM含量对共混单丝的力学性能和动态力学行为的影响。结果显示,iPP或EPDM含量基本不会对共混单丝中MHMWPE的玻璃化转变温度(Tg)造成影响。共混单丝中iPP含量的增加使MHMWPE的结晶生长受阻,结晶度下降,α峰对应损耗因子峰值(tanδα)下降,α峰峰温(Tα)向高温移动。共混单丝中EPDM含量的增加使MHMWPE的结晶度下降,α转变移向低温,tanδα增加。研究表明,一定含量的iPP可有效改善共混单丝的力学性能,提高单丝的断裂强度和结节强度,EPDM的引入可进一步增加渔用单丝韧性和结节强度。
英文摘要:
      With the development of aquaculture, it is an important development direction of fishery engineering to design new types of fiber nets. Polyethylene is widely used in fishery because of its high strength, light weight and cost-effectiveness. However, there are also the problems such as easy to damage for ordinary polyethylene fiber net in aquaculture. Middle high molecular weight polyethylene (MHMWPE) monofilaments have greater molecular weight, higher strength and cost-effectiveness than high density polyethylene (HDPE), which can be prepared by melt-spinning and drawing process. To obtain better mechanical property, we should be willing to modify MHMWPE monofilaments. MHMWPE, isotactic polypropylene (iPP) and ethylene propylene diene monomer (EPDM) were melt blended to spin fishery monofilaments. The effect of the iPP and EPDM contents on the dynamic mechanical behavior and tensile strength of the blending monofilaments was studied by thermal property analysis, dynamic mechanical properties analysis and mechanical properties testing. Results showed that Tg was influenced neither by iPP content nor by EPDM content. The degree of crystallinity and the maximum of loss factor (tanδα) for MHMWPE decreased while the temperature of α-transition increased with the increase of iPP content. In addition, the degree of crystallinity decreased, α-transition moved to low temperature and the value of tanδα increased with the increase of EPDM content. The stretching strength and knot strength increased by increasing iPP content to a certain value. The toughness and knot strength of the fishery blending monofilaments were further raised by blending of EPDM.
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