Mechanical Properties of Nylon 6 Materials Under Multi-field Conditions

Cheng-nuo Zhang; Wen-juan Tan; Hao Huang; Shu-guang Yang

doi:10.11777/j.issn1000-3304.2026.26090

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Mechanical Properties of Nylon 6 Materials Under Multi-field Conditions

更新时间：2026-07-17

- Mechanical Properties of Nylon 6 Materials Under Multi-field Conditions
- Acta Polymerica Sinica Pages: 1-9(2026)
- 作者机构：
  
  东华大学材料科学与工程学院先进纤维材料全国重点实验室先进低维材料中心上海 201620
- 作者简介：
  
  Hao Huang, E-mail: huanghao@dhu.edu.cn
  Shu-guang Yang, E-mail: shgyang@dhu.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2026.26090
  CLC：
- CSTR：32057.14.GFZXB.2026.7636
- Received：25 March 2026，
  
  Accepted：26 May 2026，
  
  Online First：17 July 2026，
- 稿件说明：
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张承诺, 谭雯娟, 黄浩, 杨曙光. 多场条件下尼龙6材料力学性能. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.26090.

Zhang, C. N.; Tan, W. J.; Huang, H.; Yang, S. G. Mechanical properties of nylon 6 materials under multi-field conditions. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.26090.
张承诺, 谭雯娟, 黄浩, 杨曙光. 多场条件下尼龙6材料力学性能. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.26090. DOI： CSTR： 32057.14.GFZXB.2026.7636.

Zhang, C. N.; Tan, W. J.; Huang, H.; Yang, S. G. Mechanical properties of nylon 6 materials under multi-field conditions. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.26090. DOI： CSTR： 32057.14.GFZXB.2026.7636.

摘要

研究了尼龙6 (PA6)薄膜和鱼线在多场条件下的力学性能，系统测试了水溶液中盐浓度和温度变化对其力学性能的影响，揭示了PA6材料在盐水溶液中相较于纯水中的力学增强现象. 将PA6薄膜和鱼线浸泡于水中，模量和强度相比干态下均有降低. 升高水溶液温度，薄膜和鱼线的力学强度进一步降低. 当水溶液温度达80 ℃时，薄膜力学强度急剧下降，鱼线由于尺寸和结构影响断裂强度没有大幅降低，但力学曲线出现多段屈服现象. 加入盐后，PA6薄膜和鱼线均表现出更高的力学强度和韧性. 尤其在80 ℃盐溶液(1 mol/L NaCl)中，薄膜的强度和韧性得到大幅提高，鱼线力学曲线中多段屈服现象消失. 我们提出在盐水溶液中，盐离子通过水合层与水分子结合，限制水的迁移，减弱了水分子对高分子材料的增塑作用. 该工作呈现了多种环境参数变化下PA6样品的力学行为，为不同服役环境的应用提供指导.

Abstract

This study investigated the mechanical properties of nylon 6 (PA6) films and fishing lines under multi-field conditions. The effects of salt concentration and temperature variations in aqueous solutions on their mechanical properties were systematically examined

revealing that PA6 materials exhibited enhanced mechanical strength in saline solutions compared to that in pure water. When PA6 films and fishing lines were immersed in water

their modulus and strength decreased compared to the dry state. With increasing temperature of aqueous solution

the mechanical strength of both films and fishing lines further declined. At 80 ℃ aqueous solution

the mechanical strength of the films dropped sharply. The breaking strength of fishing lines did not decrease abruptly due to their size and structural characteristics

but their mechanical curves displayed multi-stage yielding. Upon the addition of salt

in 1 mol/L NaCl solution at 80 ℃

both the strength and toughness of PA6 films were improved

and the multi-stage yielding in the mechanical curves of PA6 fishing lines disappeared. In saline solution

salt ions associated with water molecules through hydration shells

weakening the plasticizing effect of water on the material. This work presents the evolution of the mechanical properties of PA6 under various multi-field conditions

providing guidance for applications in different service environments.

关键词

Keywords

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