High-temperature-resistant coating capable of being repaired on line and preparation method thereof

The invention discloses a high-temperature-resistant coating capable of being repaired on line and a preparation method of the high-temperature-resistant coating. The coating is simple in preparation process and does not need high-temperature treatment. The coating is mainly composed of a PHPS pre-coating and a surface coating. The surface coating is composed of a vinyl liquid polycarbosilane ceramic precursor, acrylic resin, an inorganic filler and a solvent. The coating can be cured through infrared heating, has the advantages of being low in curing weight loss rate, high in reaction efficiency, low in energy consumption and the like, and can be used for a ceramic coating online repairing technology. 本发明公开了一种可在线修复耐高温涂层及其制备方法。该涂层制备工艺简单，无需高温处理。该涂层主要由PHPS预涂层和表面涂层组成。表面涂层由乙烯基液态聚碳硅烷陶瓷前驱体、丙烯酸树脂、无机填料和溶剂组成。该涂层可在通过红外加热实现固化，具有固化失重率低、反应效率高，耗能少等优点，可用于陶瓷涂层在线修补技术。