The Effect of Surface-Densification and Superheated Steam Modification on Impact Resistance and Surface Properties of Rubberwood
Employing rapid surface loading (160°C, 10 s) during hot pressing can elevate the peak density of the wood’s surface, thus augmenting its rigidity and impact resistance capabilities. Subsequently treatment with superheated steam (190°C, 1.5 h). The findings of the study indicate that the impact resistance of the modified rubberwood increased by 29.2% compared to the untreated control samples. Remarkably, it even surpassed that of Fraxinus mandshurica, a premium quality hard wood species. Moreover, the wood’s colour has transformed into a purple brown hue, endowing it with a more aesthetically pleasing and refined appearance. Additionally, the paint film on the wood’s surface exhibits strong adhesion, meeting the requirements of Grade 1 as stipulated by the national standard. This combined modification method effectively enhances the overall performance of rubberwood.