【摘要】 [目的]无溶剂聚硅氧烷涂料凭借其独特的分子结构和环境友好特性，成为新一代防腐蚀材料的研发焦点。[方法]制备了3种硅含量不同的聚硅氧烷涂料，利用傅里叶变换红外光谱(FTIR)、扫描电镜(SEM)、能谱(EDS)、X射线衍射(XRD)、热重分析(TGA)等手段对其微观结构和化学组成进行了表征，并对性能进行了对比测试。[结果]3种聚硅氧烷涂层在经历了盐雾暴露(1 000 h)、5%硫酸浸泡(30 d)、5%氯化钠溶液浸泡(30 d)、湿热测试(1 000 h)及冷热循环(15轮)后均保持结构完整。高硅含量聚硅氧烷涂层虽提升了耐候性，却削弱了附着力与耐碱性，低硅含量涂层则反之，中硅含量涂层的这3项性能均居中。[结论]硅含量不同的无溶剂聚硅氧烷涂料各有优劣，适用于不同的防腐蚀应用场景。更多还原

【Abstract】 [Objective] Solvent-Free polysiloxane coatings have emerged as a research focus for next-generation anticorrosion materials due to their unique molecular structure and environmental friendliness. [Method] Three polysiloxane coatings with different silicon contents were prepared. Their microstructure and chemical composition were characterized by Fourier-transform infrared spectroscopy（FTIR）, scanning electron microscopy（SEM）, energydispersive spectroscopy（EDS）, X-ray diffraction（XRD）, and thermogravimetric analysis（TGA）, followed by comparative performance testing. [Result] All three polysiloxane coatings maintained structural integrity after salt spray exposure（1 000 hours）, immersion in 5% H₂SO₄ or NaCl solution（30 days）, damp-heat testing（1 000 hours）, and thermal cycling（15 cycles）. High-silicon polysiloxane coatings showed improved weatherability but reduced adhesion and alkali resistance, while low-silicon coatings exhibited the opposite behavior. Medium-silicon coatings displayed intermediate performance in all three aspects. [Conclusion] Solvent-free polysiloxane coatings with different silicon contents each have their own advantages and disadvantages, making them suitable for different anticorrosion applications.更多还原