目的 旨在突破现有防污透明涂层在透明性不足、力学稳定性差及依赖含氟组分等方面的局限,提出一种无氟环氧树脂基类液体涂层制备策略。通过构建兼具高透明性、优异防污性能与环境友好性的涂层体系,为食品包装、餐厨器具及光学元件等领域提供可实施的新型表面保护解决方案。方法 本文采用喷涂结合热固化的方法,在环氧树脂基体中引入单环氧基封端聚二甲基硅氧烷（PDMS）,构筑无氟透明类液体涂层。系统考察PDMS含量对涂层表面结构、润湿性及防污性能的影响。结果 形貌与成分分析表明,涂层表面致密平整（Rq≈0.35 nm）,PDMS链段均匀覆盖并富集于界面。动态润湿测试表明,该涂层对多种不同表面张力液体均表现出滑动角<10°的低黏附性,并在可见光区的透过率约为95%,与裸玻璃相当。结论 该策略为实现高透明、低黏附且环境友好的环氧基防污涂层提供了可行途径。
Abstract
To overcome the limitations of poor transparency, insufficient mechanical stability, or reliance on fluorinated compounds in existing transparent antifouling coatings, the work aims to propose a preparation strategy of fluorine-free epoxy resin-based liquid-like coatings. By constructing a coating system that combines high transparency, excellent antifouling performance, and environmental friendliness, the strategy can provide a viable new surface protection solution for applications in food packaging, kitchenware, and optical components. A fluorine-free transparent liquid-like coating was constructed by incorporating monoepoxy-terminated polydimethylsiloxane (PDMS) into an epoxy resin matrix via spray coating combined with thermal curing. The effect of PDMS content on the surface structure, wettability, and antifouling performance of the coatings was systematically investigated. Morphological and compositional analyses revealed that the coating surface was dense and smooth (Rq≈0.35 nm), with PDMS chains uniformly covering and enriching at the interface. Dynamic wettability tests indicated that the coating exhibited low-adhesion behavior, with sliding angles below 10° for various liquids with different surface tensions, and maintained a visible-light transmittance of approximately 95%, comparable to bare glass. This strategy provides a feasible approach for fabricating highly transparent, low-adhesion, and environmentally friendly epoxy-based antifouling coatings.
关键词
聚二甲基硅氧烷 /
类液体表面 /
环氧树脂 /
涂层 /
防污
Key words
polydimethylsiloxane /
liquid-like surface /
epoxy resin /
coating /
antifouling
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