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通过溶胶-凝胶法制备有机-无机杂化树脂体系,按配方比例加入高红外发射率颜填料研磨色浆、硅烷偶联剂、固化剂得到耐高温高红外发射率涂料。采用喷涂涂装于钛合金表面,70~90℃固化温度固化2 h后涂层红外发射率在8~14μm最高可达0.980。在600℃煅烧2 500 s后涂层外观无明显变化涂层完整,机械性能良好红外发射率为0.852,有效地保护了钛合金底材,使其能够在高温环境下具有良好的热稳定性。
The organic-inorganic hybrid resin system is prepared by the sol-gel method, and the high-infrared emissivity pigment filler grinding colorant, the silane coupling agent and the curing agent are added according to the formula proportion to obtain the high-temperature high-infrared emissivity coating. Spraying coating on titanium alloy surface, 70 ~ 90 ℃ curing temperature curing 2 h after coating infrared emissivity of 8 ~ 14μm up to 0.980. After calcination at 600 ℃ for 2 500 s, the coating showed no obvious change in appearance. The coating is complete and its mechanical properties are good. The infrared emissivity is 0.852, which effectively protects the titanium alloy substrate and enables it to have good thermal stability under high temperature environment.