Study on Decorative Technology of Castanopsis hystrix Veneer.

In order to obtain optimized production technology of Castanopsis hystrix veneer, promote the high value utilization of Castanopsis hystrix plantation wood. In this study, Eucalyptus plywood was taken as the research object, the influences of glue and hot pressing process (glue spread, hot pressing temperature, hot pressing time and hot pressing pressure) on the moisture content, dipping peeling property and surface bonding strength of the Castanopsis hystrix veneer were investigated through orthogonal test method. Besides, the effects of different kinds of varnishes (nitrocellulose varnish, waterborne varnish and polyurethane varnish) on the color difference parameters and the physicochemical properties of the paint film (resistance to impact, wearability, adhesion, pencil hardness) of the veneer were also investigated. The results showed that the moisture content, dipping peeling property and surface bonding strength of the veneer could meet the requirements of the national standard. The optimal hot pressing process was 120 g/m² of glue, 180 °C of hot pressing temperature, 60 s of hot pressing time, and 0.4 MPa of hot pressing pressure. The impact resistance, abrasion resistance, and adhesion of the paint film coated with nitrocellulose varnish and polyurethane varnish could meet the requirements of the national standard. However, the abrasion resistance of the paint film coated with water-based varnish could not meet the requirements of the national standard, but it had the best adhesion and impact resistance. The Castanopsis hystrix wood has great development potential. [ABSTRACT FROM AUTHOR]