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The effect of alkyd varnish on thermal stability and static smoke properties of decorative wood were analysed by using thermo-gravimetric (TG) analyzer, differential scanning calorimeter and plastic smoke density tester. The TG results show that maximum mass loss of the wood and alkyd varnish occurs in the range of 200-500°C. At the pyrolysis stage, the alkyd varnish exhibits an obvious endothermic process, while the wood exhibits an obvious endothermic process and then an exothermic one. The infrared analysis and smoke density test show that the olefin structure and benzene ring structure of alkyd varnish increase both the special optical density and mass optical density of the decorative wood consisted alkyd varnish. Meanwhile, the higher external heat flux and application of an ignition source decrease the special optical density and mass optical density of the decorative materials

Effect of Alkyd Varnish on the Thermal Stability and Static Smoke Properties of Decorative Wood