| Summary: In this study, the effects of using three nano additive types (organo modified (OM NK) and sodium hydrophilic nanoclay (Na NK) with graphene nanoplatelet (GNP)), three nano additive ratios (1%, 2% and 4%), three vermiculite ratios (10%, 15% and 20%) and two different types of adhesives (urea and melamine formaldehyde) on the particleboard properties were investigated. The viscosity of the adhesive mixtures and the physical and mechanical properties, formaldehyde emissions, accelerated weathering (QUV) test performance, thermal, combustion and morphological properties of the boards were determined.
The viscosity values increased with the use of nano additives. The boards were produced with urea formaldehyde; The physical and mechanical properties were improved with the use of OM NK and GNP. The best properties were obtained at 1% and 2% usage ratios. In general, adding nanomaterials at 1% loadings reduced the loss of mechanical resistance after the QUV test. The boards were produced with melamine formaldehyde; dimensional stability increased with 1% and 2% nano additives and mechanical properties increased in all nano additive types and usage ratios. Adding nanoclays at 1% and GNP at 1%-2% loadings reduced the loss of mechanical resistance after the QUV test. The use of nanoclay also positively affected the formaldehyde emission values. The physical and mechanical properties and LOI values of the boards produced with melamine formaldehyde were higher. The dimensional stability and combustion properties of the boards were improved, while their mechanical properties and formaldehyde emission values were adversely affected using vermiculite.
Key Words: Particleboard, nanoclay, graphene nanoplatelet, formaldehyde emission, LOI |
