Physical characteristics and fluorescence effect of “environmentally friendly” metallized wood

• Main Authors: Jingkui Li, Yanan Wang, Jichi Zhang, Dawei Qi
• Format: Article
• Language: English
• Published: AIP Publishing LLC 2020-04-01
• Series: AIP Advances
• Online Access: http://dx.doi.org/10.1063/1.5127236

The composite of nano-metal materials and wood to prepare multifunctional metallized wood is of great significance for increasing the added value of wood and expanding the field of wood applications. In this paper, the veneer of Pinus sylvestris L. var. mongholica Litv was used as the research object and the wood veneer was treated by simple physical methods. A copper thin film was grown on the surface of the wood veneer by the magnetron sputtering method to realize the preparation of “environmentally friendly” metalized wood. The preparation method of “environmentally friendly” metallized wood was explored, and the mechanical properties, electrical conductivity, and fluorescent effect of metallized wood were studied. The nano-indenter, square resistance tester, and fluorescence microscope were used to characterize the mechanical properties, electrical conductivity, and fluorescent effect of the “environmentally friendly” metallized wood surface. The results show that as the sputtering time increases, the load–displacement curve shifts gradually and the elastic modulus and hardness of the metallized wood veneers also gradually increase. The loading displacement of magnetron sputtered samples for 15 min (200 °C) is 269.9 nm. The loading displacement decreases by more than 60%, the average elastic modulus increases by 6.7 times, and the average hardness increases by 6.6 times. The transverse grain square resistance on the surface of metallized wood is about 2–3 times the parallel grain square resistance. As the sputtering time increases, the natural fluorescence intensity of the metallized wood surface gradually decreases and the wood surface is completely covered by the copper film.