Influence of Drawing and Annealing on the Crystallization, Viscoelasticity, and Mechanical Properties for Middle-molecular-weight Polyethylene Fishing Monofilaments

文献类型： 外文期刊

第一作者： Yu, Wenwen

作者： Yu, Wenwen;Wang, Lumin;Shi, Jiangao

作者机构：

关键词： Middle-molecular-weight polyethylene; Fishing monofilaments; Drawing and annealing; Viscoelastic behavior; Mechanical properties

期刊名称：FIBERS AND POLYMERS （ 影响因子：2.153； 五年影响因子：2.259 ）

ISSN： 1229-9197

年卷期： 2018 年 19 卷 5 期

页码：

收录情况： SCI

摘要： The influence of drawing and annealing on the crystallization, viscoelasticity and mechanical properties for middle-molecular-weight polyethylene (MMWPE) fishing monofilaments was investigated. It was found that the drawing procedure had a positive effect on the crystallization of the MMWPE fishing monofilaments. Meanwhile, the glass transition temperature of the MMWPE monofilaments shifted to higher temperature, and the alpha-relaxation associated with crystalline phases became higher and broader with the increase in the drawing ratio. Moreover, the breaking strength of MMWPE fishing monofilaments can be effectively improved by increasing the drawing ratio. Meanwhile, the knot strength increased first and then decreased. However, the increase in annealing temperature improved the knot strength. With increasing annealing temperature, the orientation factor decreased and induced the gamma-relaxation peak at high magnitude. This indicated that the amorphous structure could become disordered during annealing treatment. In addition, the annealing temperature can clearly influence the working temperature dependence of the stress-strain behavior. When the working temperature rose from 20 degrees C to 30 degrees C, the MMWPE monofilaments after annealing at 120 degrees C exhibited low modulus loss due to their high alpha-transition temperature. Thus, an important method for improving the mechanical properties by controlling the drawing and annealing conditions was established.

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