含氟环氧树脂的构筑、结构调控与性能
Fabrication,Structure Manipulation,and Performance of Fluorine-Containing Epoxy Resins
近年来,随着现代科技在航空航天、电子信息、深海工程等领域的快速发展,对极端环境(高温、高湿、强腐蚀、高频电场等)下服役材料的综合性能要求日益严苛,而传统环氧树脂存在耐热性不足、化学稳定性有限等固有局限,为此通过精准的分子设计与结构调控,将氟原子或含氟基团引入环氧树脂体系,开发出一系列具有优异耐热性、低介电常数及高化学稳定性的含氟环氧树脂。该类材料在保留环氧树脂高机械强度与良好附着力的基础上,凭借C—F键的高键能与氟原子的强电负性,显著提升了其在高温、高湿、强腐蚀与高频电场等极端环境下的综合性能。本文从含氟环氧树脂的构建方法及氟化改性机制出发,依据氟引入方式的不同,系统综述了化学改性、物理共混与表面氟化等策略对其聚集态结构、界面特性与性能的影响规律,梳理了各类含氟环氧树脂在重防腐涂层、高频电子封装、极端环境复合材料等领域的应用与研究进展,并进一步探讨了当前其在成本控制、性能平衡与环境适应性等方面存在的问题,最后展望了该材料在绿色合成、智能响应及高通量设计等方向的发展趋势与挑战。
In recent years,the rapid advancement of modern technology in fields such as aerospace,electronic information,and deep-sea engineering has imposed increasingly stringent requirements on the comprehensive performance of materials serving in extreme environments (e.g.,high temperature,high humidity,strong corrosion,and high-frequency electric fields). Traditional epoxy resins,however,suffer from inherent limitations such as insufficient heat resistance and limited chemical stability. To address these issues,fluorine atoms or fluorine-containing groups have been incorporated into epoxy resin systems through precise molecular design and structural regulation,leading to the development of a series of fluorinated epoxy resins with excellent heat resistance,low dielectric constant,and high chemical stability. While retaining the inherent high mechanical strength and excellent adhesion of conventional epoxy resins,these materials exhibit significantly enhanced comprehensive performance under extreme conditions,such as high temperature,high humidity,strong corrosion,and high-frequency electric fields,attributed to the high bond energy of C—F bonds and the strong electronegativity of fluorine atoms. This review begins with the construction methods of fluorine-containing epoxy resins and the mechanisms of fluorination modification,systematically summarizes the effects of various strategies,including chemical modification,physical blending,and surface fluorination,on the aggregation state structure,interfacial characteristics,and macroscopic properties. It further reviews the application progress of such materials in heavy-duty anti-corrosion coatings,high-frequency electronic packaging,and composites for extreme environments. Current challenges related to cost control,performance balance,and environmental adaptability are discussed. Finally,future development trends and opportunities in green synthesis,intelligent responsiveness,and high-throughput design are prospected.
Contents
1 Introduction
2 Synthesis and preparation of fluorine-containing epoxy resin
2.1 The synthesis method of fluorine-containing epoxy resin
2.2 The influence of functionalization modification on epoxy resin
3 Research progress and innovative breakthroughs in the multi-dimensional application of fluorine-containing epoxy resin materials
3.1 Chemical engineering field:long-lasting anti-corrosion and functional coating innovation
3.2 Electronics field:breakthroughs in high-frequency dielectric and integrated packaging
3.3 Frontier interdisciplinary field:innovation in extreme environments and green materials
4 Conclusion and outlook
环氧树脂 / 含氟基团 / 合成方法 / 结构调控 / 极端环境 / 研究进展
epoxy resin / fluorine-containing group / synthesis methods / structural regulation / extreme environments / research progress
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湖北省技术创新计划重点研发项目(2024BAB117)
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