With the change of people's aesthetic concepts, low-gloss coatings are becoming a new hotspot of interest. However, the low-gloss waterborne polyurethane (WPU) coatings reported by others to our knowledge are all single-functional coatings, which are difficult to meet the requirements of complex application environments. Herein, a series of low-gloss WPU nanocoatings with versatility via mono-layered organic montmorillonite (OMt) nanosheets is reported, and then applied to polyester fabric. Ultraviolet-visible (UV–vis) examination indicated that the OMt nanosheets made the as-prepared nanocoatings have unique UV-shielding performance. Thermogravimetric analysis (TGA) curves showed that the OMt nanosheets increased the thermal stability of the nanocoatings. Moreover, Fourier transforms infrared (FTIR) spectroscopy confirmed the existence of hydrogen bonds between OMt nanosheets and WPU molecular chains, which is the essential reason why the nanocoating had a matte level of 60° gloss of 1.9 GU on the fabric. Rougher surface topography of the nanocoating compared with pristine WPU coating and fabric observed by scanning electron microscopy (SEM) is the direct reason for the decrease in gloss. In addition, the influence of the times of scraping on the gloss of the coatings was also studied. Thus, our research may provide new insights for the multifunctional matte WPU coatings.

随着人们审美观念的改变，低光泽涂料正成为新的关注热点。然而，据我们所知，其他人报道的低光泽水性聚氨酯（WPU）涂料都是单功能涂料，难以满足复杂应用环境的要求。在此，一系列具有多功能性的低光泽 WPU 纳米涂层通过报道了单层有机蒙脱石（OMt）纳米片，然后应用于聚酯织物。紫外-可见（UV-vis）检测表明，OMt 纳米片制成的纳米涂层具有独特的紫外线屏蔽性能。热重分析 (TGA) 曲线表明 OMt 纳米片提高了纳米涂层的热稳定性。此外，傅里叶变换红外 (FTIR) 光谱证实了 OMt 纳米片和 WPU 分子链之间存在氢键，这是纳米涂层在织物上具有 60°光泽度 1.9 GU 的根本原因。通过扫描电子显微镜 (SEM) 观察到的纳米涂层与原始 WPU 涂层和织物相比更粗糙的表面形貌是光泽度降低的直接原因。此外，还研究了刮削次数对涂层光泽度的影响。因此，我们的研究可能为多功能哑光 WPU 涂料提供新的见解。