信息摘要：
2026年，武汉纺织大学先进纺织材料与加工技术国家重点实验室联合华中科技大学能源与动力工程学院、苏州大学放射医学与辐射防护国家重点实验室等单位在《Surfaces and Interfaces》期刊发表论文《High-strength and flexible cross-linked Poly(vinyl alcohol-co-ethylene)/UHMWPE/Fe3O4@RGO nanofiber film for high-performance electromagnetic shielding》(DOI: 10.1016/j.surfin.2026.110979)，研究中使用LUYOR UCL-3500紫外交联仪对复合纳米纤维膜进行365 nm紫外辐照交联，制备出高强度、柔性多功能电磁屏蔽膜，为解析紫外交联在增强界面结合强度与优化导电结构中的作用提供关键实验证据。
武汉纺织大学团队利用LUYOR UCL-3500紫外交联仪制备高强度复合纳米纤维膜
2026年，武汉纺织大学团队在《Surfaces and Interfaces》发表最新成果，通过真空辅助过滤结合紫外交联策略，将Fe3O4@RGO组装进PVA-co-PE纳米纤维与UHMWPE纤维形成的互穿网络中，制备出高强度、高电磁屏蔽效能(EMI SE)的多功能复合膜。研究中使用LUYOR UCL-3500紫外交联仪对复合膜进行365 nm紫外辐照交联，使TMPTMA交联剂与PVA-co-PE、UHMWPE发生化学交联，同时密实化导电填料、增强界面结合强度。UCL-3500紫外交联仪在制备流程中承担关键的辐射交联固化环节，通过可控的紫外辐照使聚合物基体形成稳定三维交联网络，确保后续导电网络、磁电协同及力学性能的实现，为EMI屏蔽与热管理功能一体化提供保障。
武汉纺织大学先进纺织材料与加工技术国家重点实验室是我国纺织材料领域的核心科研阵地，围绕新型纺织材料、功能纤维与先进加工技术开展系统研究。该研究团队聚焦电磁屏蔽复合材料、纳米纤维膜多功能化等方向，联合华中科技大学能源与动力工程学院、苏州大学放射医学与辐射防护国家重点实验室等单位，系统研究了紫外交联结构对复合膜微观结构、力学性能与EMI屏蔽性能的影响，揭示了紫外辐射交联在增强界面结合强度、优化导电结构中的机制，为发展高强度稳定的电磁屏蔽纳米纤维复合材料提供了新设计思路与实验基础。
本实验采用LUYOR UCL-3500紫外交联仪作为复合纳米纤维膜辐射交联的核心设备。实验通过水热法合成Fe3O4@RGO，经真空辅助过滤制备PVA-co-PE/UHMWPE/Fe3O4@RGO复合膜，随后将复合膜浸入含TMPTMA(1.0% V/V)和DCP(0.2% V/V)的乙醇溶液中，置于交联仪内进行紫外交联反应30 min（UCL-3500，功率6500 μW/cm²，波长365 nm，累计能量4.68×10⁵ J/m²），自然风干后获得辐射交联纳米纤维复合膜PVA/UPE/FeO/RG-X。经紫外交联后，复合膜EMI SE由26.9 dB提升至37.1 dB，EMI SSE与SSE/t分别达1515.53 dB·cm⁻¹与6314.68 dB·cm²·g⁻¹，拉伸应力由7.9 MPa提升至13.3 MPa，并展现出优异的酸碱、液氮及高温环境稳定性和热电、光热转换性能。
该研究证实，LUYOR UCL-3500紫外交联仪可用于高强度柔性复合纳米纤维膜的365 nm紫外交联固化，适用于电磁屏蔽材料、热管理膜材、多功能复合膜等材料科学应用场景。LUYOR UCL-3500紫外交联仪在国内外高校和科研院所得到广泛好评，欢迎私信或留言联系上海路阳了解详情！
原文段落
复合纳米纤维膜制备与紫外交联方法原文
Fe3O4@RGO was synthesized by the hydrothermal synthesis method. 3 g of FeCl3·6H2O and 1.5 g of FeSO4·7H2O were added to a three-necked flask, and 200 mL of deionized water was added. The mixture was mechanically stirred until FeCl3·6H2O and FeSO4·7H2O were completely dissolved. After purification, Fe3O4 microspheres were obtained. Then, 0.5 g of RGO was added and stirred mechanically for 2 hours to form a homogeneous mixture. Ammonia water was added to adjust the pH of the solution to 12. After reacting at 60 °C for 3 hours, the Fe3O4@RGO solution was obtained. Then, PVA-co-PE nanofibers were dispersed in a solution of water and isopropanol (in a 3:50:50 mass ratio), and were pulped using a high-speed mill to prepare a PVA-co-PE nanofiber suspension with a fiber content of 3.0 wt.%. The PVA-co-PE nanofiber suspension was mixed with the Fe3O4@RGO to form a PVA-co-PE/Fe3O4@RGO mixed suspension. Then, UHMWPE fibers were added to the mixed suspension. This suspension was placed in a vacuum-assisted filtration device and vacuum-assisted filtration was performed to obtain a PVA-co-PE/UHMWPE/Fe3O4@RGO film. The obtained composite film was immersed in an ethanol solution containing TMPTMA and DCP (The addition ratios of TMPTMA and DCP are 1.0% (V/V) and 0.2% (V/V), respectively), and placed in a cross-linking instrument for a cross-linking reaction for 30 min (Luyor-UCL-3500, the power was set to 6500 μW/cm2, Wavelength: 365nm, the cumulative energy was 4.68×105 J/m2). After natural air drying, a PVA/UPE/FeO/RG radiation cross-linked nanofiber composite film was obtained, which was abbreviated as PVA/UPE/FeO/RG-X.
电磁屏蔽性能与力学性能相关原文
Fig. 3a-e illustrate the EMI SE of the nanofiber films in the X-band (8.2 - 12.4 GHz) and their environmental stability. The PVA/UPE film without adding conductive filler has almost no EMI SE. When conductive fillers were introduced, the EMI SE of the PVA/UPE/FeO/RG increased to 26.9 dB, and after UV cross-linking, the EMI SE further increased to 37.1 dB. Before cross-linking, a magnetic-electrical cooperative network between Fe3O4@RGO and the fibers was formed, jointly enhancing the overall shielding effectiveness EMI SE. After UV radiation cross-linking, the PVA/UPE/FeO/RG-X film constructed a stable three-dimensional network structure, with an EMI SE of 37.1 dB, much higher than the market price level (20 dB). Fig. 3c and d display the EMI SE of the PVA/UPE/FeO/RG-X in extreme environments (strong acid, strong base, -196 °C to 200 °C) remaining stable (attenuation < 3 dB), and the EMI SE still remains above 33 dB. Moreover, the mechanical properties were tested: after adding the fillers, the tensile stresses have been increased from 5.1 MPa to 7.9 MPa; after cross-linking, the tensile stress further increased to 13.3 MPa.
研究结论原文
In summary, a robust, flexible, and high-performance EMI-shielding composite film was prepared via a combined strategy of vacuum filtration and UV-induced cross-linking. Owing to UV-induced cross-linking and hydrogen-bond self-assembly among the components, the resulting film exhibited a tensile strength of 13.3 MPa. After more than 100 cycles of compression, it hardly undergoes permanent deformation and maintains excellent flexibility. Due to the magnetic-electric network constructed within the composite film, its EMI SE increased to 37.1 dB. Furthermore, the cross-linked structure enhanced the continuity of the conductive network within the composite film, thereby increasing the electrical conductivity and improving electromagnetic wave attenuation. In addition, the resulting cross-linked composite film exhibited notable thermoelectric and photothermal conversion properties. The film shows promising application potential in smart wearable devices, medical thermotherapy, and other fields.
DOI:doi.org/10.1016/j.surfin.2026.110979
