纺织学报 ›› 2021, Vol. 42 ›› Issue (08): 1-7.doi: 10.13475/j.fzxb.20210300507

• 纺织科技新见解学术沙龙专栏:循环再生及生物可降解纤维 •    下一篇

生物基锦纶56和锦纶66的结构与吸放湿性能评价

王建明1, 李永锋1,2, 郝新敏2(), 闫金龙2, 乔荣荣2, 王美慧2   

  1. 1.北京服装学院 材料设计与工程学院, 北京 100029
    2.军事科学院系统工程研究院 军需工程技术研究所, 北京 100010
  • 收稿日期:2021-03-01 修回日期:2021-05-17 出版日期:2021-08-15 发布日期:2021-08-24
  • 通讯作者: 郝新敏
  • 作者简介:王建明(1965—),男,教授,博士。主要研究方向为新型纤维染整加工。
  • 基金资助:
    北京市科技计划项目(Z181100004118001);国家自然科学基金项目(U1808211);辽宁省科学技术计划项目工业重大专项(2019JH1/10100010)

Study on structure and moisture absorption and liberation properties of bio-based polyamide 56 and polyamide 66

WANG Jianming1, LI Yongfeng1,2, HAO Xinmin2(), YAN Jinlong2, QIAO Rongrong2, WANG Meihui2   

  1. 1. School of Materials Design & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China
    2. Institute of Quartermaster Engineering & Technology, Systems Engineering Institute, Academy of Military Sciences, Beijing 100010, China
  • Received:2021-03-01 Revised:2021-05-17 Published:2021-08-15 Online:2021-08-24
  • Contact: HAO Xinmin

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摘要：

为系统分析生物基锦纶56与锦纶66的吸放湿性能,在标准状态下对不同规格纤维进行对比研究。测试了生物基锦纶56、锦纶66弹力丝及短纤维的吸湿、放湿和干燥特征曲线,并由此推导出4种纤维在标准状态下达到吸湿、放湿和干燥平衡过程中,回潮率或含水率对时间的回归方程,以及吸湿、放湿和干燥速率方程。结果表明:标准大气条件下,与锦纶66相比,生物基锦纶56的吸湿、放湿平衡回潮率大,吸湿、干燥速率大,初始放湿速率略小,但随着时间的延长,生物基锦纶56的放湿速率大于锦纶66;4种纤维的吸湿等温线均呈反S形,在高湿度环境下生物基锦纶56的干燥性优于锦纶 66,即生物基锦纶56具有较好的快干性能。

关键词: 生物基锦纶56, 锦纶66, 纤维结构, 吸湿性, 放湿性

Abstract:

Aiming at the analyse of moisture absorption and liberation properties of bio-based polyamide 56 and polyamide 66, characteristic curves of moisture absorption and liberation, and drying of bio-based polyamide 56 draw texturing yarn (DTY), polyamide 66 DTY, bio-based polyamide 56 and polyamide 66 staple fiber were obtained by testing under the standard condition. According to the characteristic curves, the regression equation of moisture regain or moisture content to time were deduced during the moisture absorption, liberation and drying equilibrium process for the four types of fibers under the standard testing conditions. The results show that under standard atmospheric conditions, bio-based polyamide 56 fiber has a higher moisture absorption and liberation balance, higher moisture absorption and drying rates, and a slightly lower initial moisture release rate compared with the polyamide 66 fiber. However, bio-based polyamide 56 has a higher moisture release rate than polyamide 66 with the increase of time. The moisture absorption isotherms of the four types of fibers are all in a reverse "S" shape. In a high humidity environment, the drying property of bio-based polyamide 56 is better than that of polyamide 66, i.e., bio-based polyamide 56 has better quick-drying performance.

Key words: bio-based polyamide 56, polyamide 66, fiber structure, moisture adsorption property, moisture liberation property

中图分类号: 

  • TS102.5

图1

4种锦纶的DSC及XRD曲线"

表1

4种锦纶的熔点和结晶度"

纤维种类 熔点/℃ 结晶度/%
生物基PA56 DTY 250.2 43.3
PA66 DTY 254.4 58.9
生物基PA56 短纤维 249.9 37.0
PA66 短纤维 250.6 44.4

图2

4种锦纶的吸放湿曲线"

图3

标准大气下4种锦纶纤维的干燥曲线"

表2

吸湿、放湿回潮率和干燥含水率对时间的回归方程"

纤维种类 吸湿回归方程 放湿回归方程 干燥回归方程
生物基PA56 DTY W 吸 = 4.461 - 4.195 e - 0.08812 t W 放 = 4.801 - 7.779 e - 0.04445 t W 干 = 3.783 + 27.458 e - 0.00705 t
PA66 DTY W 吸 = 3.676 - 3.562 e - 0.09457 t W 放 = 3.913 - 5.821 e - 0.06644 t W 干 = 2.255 + 29.337 e - 0.00582 t
生物基PA56短纤维 W 吸 = 4.991 - 4.951 e - 0.06294 t W 放 = 5.241 - 7.017 e - 0.02785 t W 干 = 4.392 + 27.153 e - 0.00898 t
PA66短纤维 W 吸 = 4.251 - 4.220 e - 0.06394 t W 放 = 4.358 - 5.999 e - 0.05478 t W 干 = 3.239 + 28.636 e - 0.00271 t

表3

吸湿、放湿和干燥速率对时间的回归方程"

纤维种类 吸湿速率回归方程 放湿速率回归方程 干燥速率回归方程
生物基PA56 DTY υ吸=0.369 7e-0.088 12t υ放=0.345 8e-0.044 45t υ干=0.193 6e-0.007 05t
PA66 DTY υ吸=0.336 8e-0.094 57t υ放=0.386 7e-0.066 44t υ干=0.170 7e-0.005 82t
生物基PA56短纤维 υ吸=0.311 6e-0.062 94t υ放=0.195 4e-0.027 85t υ干=0.243 8e-0.008 98t
PA66短纤维 υ吸=0.269 8e-0.063 94t υ放=0.328 6e-0.054 78t υ干=0.206 5e-0.007 21t

图4

生物基PA56、PA66 DTY和短纤维吸湿速率回归曲线"

图5

生物基PA56、PA66 DTY和短纤维放湿速率回归曲线"

图6

生物基PA56、PA66 DTY和短纤维干燥速率回归曲线"

图7

4种锦纶的吸湿等温线"

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