| Abstrakt: |
Poly vinyl acetate (PVAC) adhesive is one of the most important adhesives in wood and furniture manufacturing industry, which has many advantages such as low cost, environment friendliness and non-toxicity. However, it has some disadvantages such as low water resistance and poor boning strength. In this study, the effect of nano silica (NS) on the properties of poly vinyl acetate adhesive was investigated. The adhesive formulation with different NS contents (2, 3 and 4%) was mixed with PVAC. The structure of the prepared adhesive samples was studied by FT-IR and XRD. In order to make joints, maple wood (Acer cappadocicum) was used. Two standards of D882 and ASTM D905 were used for tensile and shear measurements, respectively. Results showed that adding NS to PVAC improved the tensile strength of films. For example, the tensile strength of prepared films was increased by 30% after adding 4% of NS. Moreover, shear strength test showed that NS up to 3% can improve PVAC bond strength. Viscosity measrements showed that increasing the weight of NS up to 3% to PVAC glue initially decreased in the viscosity and then increased. [ABSTRACT FROM AUTHOR] |
