表面修饰空心玻璃微珠对反射隔热涂料性能的影响

Effect of surface modified hollow glass beads on the properties of reflective thermal insulation coatings

为解决空心玻璃微珠与反射隔热涂料不相容的问题,对空心玻璃微珠进行表面改性处理,探讨表面修饰空心玻璃微珠对反射隔热涂料性能的影响。XRD分析、红外光谱分析和SEM表明表面修饰后的空心玻璃微珠表面形成了锐钛型二氧化钛,且锐钛型二氧化钛与空心玻璃微珠表面形成了交联结构。探讨了金红石型钛白粉和表面修饰空心玻璃微珠用量对反射隔热涂料的热反射性能和保温隔热性能的影响。结果表明,金红石型钛白粉能够提高反射隔热涂料的太阳热反射率,表面修饰空心玻璃微珠能够提升反射隔热涂料的保温隔热性能,当金红石型钛白粉用量为9%、表面修饰空心玻璃微珠用量为5%时,相较于未添加功能填料的涂料,热反射率提高45.16%,隔热温差提高6.9℃。

To address the issue of incompatibility between hollow glass microspheres and reflective insulation coating systems,the surface modification treatment was carried out on the hollow glass microspheres.Explore the effect of surface modification of hollow glass microspheres on the performance of reflective insulation coatings.XRD analysis,infrared spectroscopy analysis,and SEM showed that the surface of the modified hollow glass microspheres formed anatase titanium dioxide,and a cross-linked structure was formed between anatase titanium dioxide and the surface of the hollow glass microspheres.Subsequently,we explored the effects of rutile type titanium dioxide powder and surface modification on the thermal reflection performance and insulation performance of reflective insulation coatings by the amount of hollow glass microspheres used.The results showed that rutile titanium dioxide powder can improve the solar thermal reflectance of the coating,and surface modified hollow glass microspheres can improve the thermal insulation performance of the reflective insulation coating.When the content of rutile titanium dioxide powder is 9% and the content of surface modified hollow glass microspheres is 5%,compared to the coating without adding functional fillers,the thermal reflectance increases by 45.16% and the thermal insulation temperature difference increases by 6.9℃.