物理化学学报 >> 2026, Vol. 42 >> Issue (8): 100315.doi: 10.1016/j.actphy.2026.100315

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基于氧化石墨烯-聚四氟乙烯氢键分子间作用的抗蠕变性能增强研究

刘柯1,2,3, 高琪4, 李海丰2, 刁立鹏1,3,4,*(), 陈学刚1,3,4,*(), 李道浩1, 吴广磊1,*()   

  1. 1 青岛大学材料科学与工程学院, 生物多糖纤维成形与生态纺织国家重点实验室, 山东 青岛 266071
    2 湖北汽车工业学院汽车材料学院, 湖北 十堰 442002
    3 宁波永基精密科技有限公司, 浙江 宁波 315400
    4 青岛汉兴新材料有限公司, 山东 青岛 266109
  • 收稿日期:2026-01-31 修回日期:2026-05-04 录用日期:2026-05-06 发布日期:2026-06-11
  • 通讯作者: Email: diaolipeng@qdhanxing.com (刁立鹏)chenxuegang.cool@163.com (陈学刚)wuguanglei@qdu.edu.cn/wuguanglei@mail.xjtu.edu.cn (吴广磊)

Hydrogen-bonding intermolecular interaction between graphene oxide and polytetrafluoroethylene enhanced creep resistance

Ke Liu1,2,3, Qi Gao4, Haifeng Li2, Lipeng Diao1,3,4,*(), Xuegang Chen1,3,4,*(), Daohao Li1, Guanglei Wu1,*()   

  1. 1 State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, Shandong Province, China
    2 School of Automotive Materials, Hubei University of Automotive Technology, Shiyan 442002, Hubei Province, China
    3 Ningbo Yokey Precision Technology Co., Ltd, Ningbo 315400, Zhejiang Province, China
    4 Qingdao Hanxing New Material Co., Ltd, Qingdao 266109, Shandong Province, China
  • Received:2026-01-31 Revised:2026-05-04 Accepted:2026-05-06 Published:2026-06-11
  • Contact: Email: diaolipeng@qdhanxing.com (Lipeng Diao)chenxuegang.cool@163.com (Xuegang Chen)wuguanglei@qdu.edu.cn/wuguanglei@mail.xjtu.edu.cn (Guanglei Wu)

摘要:

聚四氟乙烯(PTFE)因具备优异的热稳定性、电绝缘性及低摩擦特性被广泛应用。然而,其显著的蠕变行为极大地限制了自身的应用范围。无机填料可有效改善聚四氟乙烯基材料的抗蠕变性能,且填料与聚四氟乙烯基体间的相互作用力对改性效果起着关键作用。本研究采用二维单层氧化石墨烯(GO)作为增强填料,制备得到氧化石墨烯-聚四氟乙烯(GO-PTFE)复合材料,实现了材料抗蠕变性能的显著提升。氧化石墨烯表面富含含氧官能团,可与聚四氟乙烯基体中的氟原子形成强界面氢键作用。理论计算与分子动力学模拟结果表明,GO-PTFE复合材料中存在强烈的分子间相互作用,该作用能够有效限制聚四氟乙烯分子链的运动,减缓其在外力作用下的滑移与变形,进而降低材料的蠕变程度。

关键词: 氢键作用, 填充改性, 聚四氟乙烯, 抗蠕变

Abstract:

Polytetrafluoroethylene (PTFE) is widely used due to its excellent thermal stability, electrical insulation, and low friction characteristics. However, its significant creep behavior greatly limits its application range. Inorganic fillers can effectively improve the creep resistance of PTFE-based materials, and the interaction between the filler and the PTFE matrix plays a key role in the modification effect. This study employs two-dimensional monolayer graphene oxide (GO) as a reinforcing filler to prepare graphene oxide-polytetrafluoroethylene (GO-PTFE) composites, achieving a significant enhancement in creep resistance. The surface of graphene oxide is rich in oxygen-containing functional groups, which can form strong interfacial hydrogen bonds with fluorine atoms in the PTFE matrix. Theoretical calculations and molecular dynamics simulations indicate that there is a strong intermolecular interaction in GO-PTFE composites. This interaction effectively restricts the movement of PTFE molecular chains, reduces their slippage and deformation under external forces, and thereby decreases the material's creep extent.

Key words: Hydrogen bonding, Filling modification, Polytetrafluoroethylene, Creep resistance