基于连苯三酚基团的表面改性及对聚醚醚酮粘接性能提升研究

打开文本图片集

中图分类号： TQ433.4+37 文献标志码：A文章编号：1001-5922（2025）09-0009-05

Research on surface modification based on pyrogallol group and improvement of adhesion performance of polyetheretherketone

JU Shuang，ZHANG Yinyu，WU Yeping （Institute of Chemical Materials，China Academy of Enginering Physics，Mianyagn 6210o0，Sichuan China）

Abstract：Epoxyresinadhesive is a widelyused adhesive with theadvantages of high bond strength，strong toughness and wide range of applications.With the continuous development of bonding engineering and technology，broadening the aplication range of bonding technologyinthe fieldof lowsurface energy materials isa hot topic in current research.The application value of engineering plastics represented bypolyetheretherketone（PEEK）is increasing，and it isof great significance to improve the bonding strength of PEEK by improving the bonding surface.In recent years，the pyrogalol group has been widely studied because itcan forma varietyof interaction forces with the substrate surface and the rubberbody.In this study，the pyrogallol group in gallcacid（GA）was introduced into the structure of epoxy monomer（DGEBA）through a one-step reaction，and the epoxy monomer modified by pyrogrosopallol （GA -DGEBA） was obtained.It was used as a surface treatment agent for the surface treatment of PEEK plasticshees，which effectivelyimproved the wetabilityof theadhesiveonthesurfaceofthe sheet，and improved he adhesion strength of epoxy resin adhesive on the surface of PEEK.The bonding strength increased from （ 1.62± 0.21）MPa for the unmodified sample to （ 2.62±0.41 ）MPa after GA -DGEBA modification. This study provides a feasible way to improve the bonding strength of low surface energy materials by using the pyrogallol group. Key words ：pyrogallol;epoxy resin ; surface modification; bonding strength

聚醚醚酮（PEEK）是一种高性能的非晶态热塑性塑料，具有优异的机械性能、断裂韧性、热稳定性和化学稳定性，适用于苛刻环境中如航空航天领域的各种应用[1-2]。（剩余7972字）