Flexural vibration properties of particle board using acrylic emulsion adhesives with differential glass transition temperature

Abstract

Abstract Vibration characteristics of wood-based materials are essential parameters in considering the indoor environment of a building. This study investigates the effect of the physical properties of water-based adhesives on vibration characteristics of wood-based materials. Adhesive films and particle boards (PB) were prepared from acrylic emulsion adhesives (AE) with differential glass transition (T g), and loss tangent of dynamic viscoelasticity (tanδ D) and flexural vibration property (tanδ F) were compared. The tanδ D master curve and tanδ F showed a similar tendency regarding frequency dependence. The apparent activation energy (ΔH) calculated from the shift factor of the master curve tends to be different depending on the T g of AE and was especially high for AE with T g = 13 °C along with blended AE. The dynamic Young’s modulus (E F) calculated from the flexural vibration tests showed higher values for AE at T g = 13 °C, 41 °C, and 90 °C than that of urea–formaldehyde adhesive (UF).

Keywords

• Acrylic emulsion adhesive
• Glass transition temperature
• Dynamic viscoelasticity
• Time–temperature superposition
• Master curve
• Apparent activation energy