Abstract
Raw lacquer (RLA) has been widely used indoors for centuries in Asia. But its weak UV-resistant property limited its outdoor application. In this article, the UV-resistant property of lacquer film was significantly improved by solution intercalation method. The intercalated nanocomposites were obtained from RLA, multihydroxyl polyacrylate resin (MPA), and organophilic montmorillonite (OMMT). The structure and morphology of the RLA/MPA/OMMT nanocomposites were confirmed by X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). The variation of the film gloss and impact strength with different UV exposure time was also investigated. Owing to the dispersion of nanometer-sized OMMT in polymer matrix, the RLA/MPA/OMMT nanocomposites exhibited improved UV-resistant property. When the OMMT content is 3.0 wt%, the best physical–mechanical properties can be obtained. These results indicated that the solution intercalation with nanoparticles was an efficient and convenient method to improve the properties of raw lacquer.
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