紫外光辐照交联改性对UHMWPE纤维蠕变性能的影响

doi:10.12066/j.issn.1007-2861.2652

上海大学学报(自然科学版) ›› 2025, Vol. 31 ›› Issue (3): 433-443.doi: 10.12066/j.issn.1007-2861.2652

紫外光辐照交联改性对UHMWPE纤维蠕变性能的影响

王燕玲^1,2, 李娜^1,2, 王彦^1,2, 于俊荣^1,2, 胡祖明^1,2

1. 东华大学材料科学与工程学院, 上海 201620;
2. 东华大学先进纤维材料全国重点实验室, 上海 201620

收稿日期:2024-11-27 出版日期:2025-06-30 发布日期:2025-07-22
通讯作者: 于俊荣(1971-),女,教授,博士生导师,博士,研究方向为超高分子量聚乙烯纤维. E-mail:yjr@dhu.edu.cn
基金资助:
国家重点研发计划资助项目(2021YFB3700103)

Effect of ultraviolet-radiated cross-linking modification on creep behavior of UHMWPE fibers

WANG Yanling^1,2, LI Na^1,2, WANG Yan^1,2, YU Junrong^1,2, HU Zuming^1,2

1. School of Material Science and Engineering, Donghua University, Shanghai 201620, China;
2. State Key Laboratory of Advanced Fiber Materials, Donghua University, Shanghai 201620, China

Received:2024-11-27 Online:2025-06-30 Published:2025-07-22

摘要/Abstract

摘要： 超高分子量聚乙烯(ultra-high-molecular-weight polyethylene,UHMWPE)纤维分子链之间的作用力极低,导致抗蠕变性能较差,限制了其应用.利用萃取改性将三羟甲基丙烷三丙烯酸酯(trimethylolpropane triacrylate,TMPTA)和光引发剂Irgacure500引入UHMWPE纤维,经过3级热拉伸后,通过紫外光辐照引发交联,从而提高纤维的抗蠕变性能.研究结果表明:紫外光辐照后UHMWPE纤维凝胶含量大幅度增大;随着改性萃取液中TMPTA质量分数的增大,纤维凝胶含量先增大后减小,熔点、抗蠕变性能和高温下的强度保持率均先升高后降低,纤维的结晶度、取向度和力学性能降低,抗热收缩性提高.综合考虑交联改性纤维的力学性能、耐热性能和抗蠕变性能,最佳的改性萃取液TMPTA质量分数为2%,在该条件下制备的纤维在室温30%断裂应力下抗蠕变性提高27.75%,90℃和0.25 cN/dtex下抗蠕变性能改善52.99%,在150℃高温下处理30 min后强度仍能保持90.3%.

关键词: 超高分子量聚乙烯纤维, 紫外光交联, 萃取改性, 抗蠕变性, 力学性能

Abstract: Ultra-high-molecular-weight polyethylene（UHMWPE） fibers have very low intermolecular forces, resulting in poor anti-creep performance and limiting their applications.Trimethylolpropane triacrylate（TMPTA） and a photo-initiator（Irgacure500） were introduced into UHMWPE fibers using solvent extraction modification. After a three-stage hot drawing, the fibers were irradiated with ultraviolet light to produce a cross-linking structure within the fibers, thereby improving the anti-creep performance of UHMWPE fibers.The results showed that the gel content of the UHMWPE fibers increased significantly after ultraviolet irradiation. With an increase in the mass fraction of TMPTA in the modified extracting solution, the gel content, melting point, anti-creep performance, and residual strength of the fibers after high-temperature treatment first increased and subsequently decreased; the crystallinity, degree of orientation, and mechanical properties decreased;and the thermal shrinkage resistance improved. Comprehensively, considering the mechanical properties, thermal performance, and anti-creep performance of cross-linking modified fibers, the optimal quality mass fraction of TMPTA in the modified extracting solution was2%, the anti-creep performance of resultant fibers was improved by 27.75% and 52.99%,respectively, after room temperature creep for 20 min under 30% breaking stress and 90 ℃creep for 20 min under 0.25 cN/dtex, and the strength remained at 90.3% after being treated at 150 ℃ for 30 minutes.

Key words: ultra-high-molecular-weight polyethylene （UHMWPE） fiber, ultraviolet radiation crosslinking, extraction modification, creep resistance, mechanical property

中图分类号:

TQ34

王燕玲, 李娜, 王彦, 于俊荣, 胡祖明. 紫外光辐照交联改性对UHMWPE纤维蠕变性能的影响[J]. 上海大学学报(自然科学版), 2025, 31(3): 433-443.

WANG Yanling, LI Na, WANG Yan, YU Junrong, HU Zuming. Effect of ultraviolet-radiated cross-linking modification on creep behavior of UHMWPE fibers[J]. Journal of Shanghai University（Natural Science Edition）, 2025, 31(3): 433-443.

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紫外光辐照交联改性对UHMWPE纤维蠕变性能的影响

Effect of ultraviolet-radiated cross-linking modification on creep behavior of UHMWPE fibers

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