188宝金博页面版

43 理论与研究NO.08 2026 塑料科技 Plastics Science and Technology聚乙烯醇/石墨烯纳米复合材料的电阻式应变传感性能研究王 怀1 ,司文陵 2 ,丁雪晨 1（1.河南轻工职业学院，河南 郑州 450008；2.河南地矿职业学院，河南 郑州 451464）摘 要： 以聚乙烯醇（PVA）为基体，以还原氧化石墨烯（rGO）为导电填料，采用溶液共混-流延成膜法制备PVA/rGO纳米复合薄膜。对复合薄膜的结构与热学性能进行表征，系统考察rGO含量对复合材料力学性能、导电性能及电阻式应变传感性能的影响。结果表明：rGO在PVA基体中能够形成均匀的导电网络。当rGO质量分数为2.0%时，复合薄膜的导电渗滤阈值约为0.75%，拉伸强度达到65.2 MPa，应变灵敏系数在0~10%应变范围内为5.5，在10%~50%应变范围内可达18.0。经500次拉伸循环测试后，信号偏移量低于3.5%，响应时间约80 ms。PVA/rGO-2.0%复合薄膜展现出优异的应变传感性能与循环稳定性，在柔性可穿戴传感器领域具有潜在的应用价值。关键词：聚乙烯醇；石墨烯；纳米复合材料；应变传感中图分类号： TB332 文献标志码：A 文章编号：1005-3360（2026）08-0043-06 DOI：10.15925/j.cnki.issn1005-3360.2026.08.008Study on Resistive Strain Sensing Performance of Polyvinyl Alcohol/Graphene NanocompositesWANG Huai 1 , SI Wenling 2 , DING Xuechen 1(1. Henan Vocational College of Light Industry, Zhengzhou 450008, China;2. Henan Geology Mineral College, Zhengzhou 451464, China)Abstract： Polyvinyl alcohol (PVA) was used as the matrix and reduced graphene oxide (rGO) was employed as the conductive filler to prepare PVA/rGO nanocomposite films via a solution blending-casting method. The structure and thermal properties of the composite films were characterized, and the effects of rGO content on the mechanical properties, electrical conductivity, and resistive strain-sensing performance of the composites were systematically investigated. The results showed that rGO could form a uniform conductive network within the PVA matrix. At an rGO mass fraction of 2.0%, the composite films exhibited an electrical percolation threshold of approximately 0.75%, a tensile strength of 65.2 MPa, and strain gauge factors of 5.5 in the strain range of 0~10% and 18.0 in the range of 10%~50%. After a test of 500 stretching cycles, the signal drift was below 3.5%, and the response time was approximately 80 ms. The PVA/rGO-2.0% composite films demonstrated excellent strain-sensing performance and cyclic stability, indicating potential application in flexible wearable sensors.Keywords： PVA; Graphene; Nanocomposites; Strain sensing柔性电子技术与物联网技术的快速发展，使柔性应变传感器在人体运动监测、健康管理、人机交互及结构健康监测等领域受到广泛关注 [1-3] 。传统金属箔式应变片技术成熟，但存在应变范围窄、柔性差、难以贴合曲面等局限，难以满足新型柔性传感器件的发展需求 [4] 。因此，开发兼具高灵敏度、宽应变范围和良好柔性的新型应变传感材料已成为研究热点。在众多柔性基体材料中，聚乙烯醇(PVA)因优异的水溶性、成膜性、生物相容性和力学性能等特性，成为制备柔性传感器的理想基体材料之一 [5-7] 。PVA分子链上含有大量羟基，可与多种纳米填料形成氢键，有利于填料均匀分散与界面结合 [8] 。然而，纯PVA为绝缘材料，需要引入导电填料构建导电网络，以实现电阻式应变收稿日期Submitted date 2025-12-15；修回日期Revised date 2026-01-08；录用日期Accepted date 2026-02-12基金项目：2025年度河南省科技攻关项目（252102210112）联系人，wanghuai6688@163.com引用本文：王怀,司文陵,丁雪晨.聚乙烯醇/石墨烯纳米复合材料的电阻式应变传感性能研究[J].塑料科技,2026,54(8):43-48.Citation：WANG H, SI W L, DING X C. Study on resistive strain sensing performance of polyvinyl alcohol/graphene nanocomposites[J]. Plastics Science and Technology, 2026, 54(8): 43-48.网络首发时间：2026-08-31 17:14:32 网络首发地址：https://link.cnki.net/urlid/21.1145.TQ.20260830.2214.034