The Effect of Different Ambient Temperatures on the Adhesion Performance of Black Pine (Pinus nigra) Wood

Abstract

In this study, the adhesion performance of wood glues was evaluated depending on temperature. Polyvinyl acetate (PVA) and poly urethane (PU) glue were used to adhere to the Back pine (Pinus nigra) wood samples. The adhesion performance of the samples was determined under three different temperature effects: below room temperature (4 ° C), at room temperature (22 ° C), and above room temperature (55 ° C). After sticking, the samples were clamped with a hand vise and left to cure at three different temperatures. Lap sheer strength (LSS), modulus of rupture (MOR) and modulus of elasticity (MOE) analyses were performed for the mechanical characterization of the samples. According to the obtained results, the LSS (Load at Specified Strain) strength increased below and above room temperature. In contrast, the MOR (Modulus of Rupture) and MOE (Modulus of Elasticity) strengths decreased below and above room temperature. Thus, it was concluded that in addition to the adhesive strength varying with temperature, the direction of the force application also influences the strength. Especially in small workshops, the ambient temperature is greatly influenced by summer and winter conditions. This, in turn, affects the adhesive strength and the quality of the work for wood bonding. Supporting small and medium-sized enterprises (SMEs) with similar studies is essential to improve the quality of their work.