研究目的
Investigating the effects of vacuum-UV (VUV) radiation as a surface pre-treatment method for polyetheretherketone (PEEK) to enhance its adhesive bonding properties for structural applications.
研究成果
VUV radiation is an effective pre-treatment method for enhancing the adhesive bonding properties of PEEK, achieving high bond strengths after short exposure times. The treatment introduces functional groups and improves wettability without significantly altering the bulk mechanical properties of PEEK. The method is simple, cost-effective, and suitable for automation, making it a promising alternative for industrial applications.
研究不足
The study focused on the effects of VUV and LPP treatments on PEEK's surface properties and adhesive bonding strength. Limitations include the specific conditions of VUV exposure and the comparison with only one alternative treatment method (LPP). The long-term durability of the adhesive bonds and the scalability of the VUV treatment for industrial applications were not extensively explored.
1：Experimental Design and Method Selection
The study utilized VUV radiation to treat PEEK surfaces, comparing the effects with oxygen low-pressure plasma (LPP) treatment and untreated samples. The methodology included varying VUV radiation doses and analyzing the surface and mechanical properties post-treatment.
2：Sample Selection and Data Sources
Extruded PEEK films of 250 μm thickness in amorphous and semi-crystalline conditions were used. Samples were cleaned with polar liquids before treatment.
3：List of Experimental Equipment and Materials
VUV excimer lamp (XERADEX from Osram), oxygen low-pressure plasma system (Nano SL PC from Diener electronic), x-ray photoelectron spectroscopy (ESCA+ system by Scienta Omicron GmbH), contact angle measurement system (DSA100 by Krüss GmbH), atomic force microscope (Cypher AFM by Asylum Research), confocal laser scanning microscope (VK-X200 series by Keyence).
4：Experimental Procedures and Operational Workflow
PEEK samples were exposed to VUV radiation at varying doses. Surface characterization was performed using XPS, CA, AFM, and CLSM. Tensile tests were conducted to assess mechanical properties. Adhesive bond strength was evaluated through tensile and shear tests.
5：Data Analysis Methods
Data from XPS, CA, AFM, and CLSM were analyzed to determine surface chemistry, wettability, topography, and mechanical properties. Statistical analysis was applied to correlate surface treatments with adhesive bond strengths.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
