The effects of adding the aluminum sulfate to the urea formaldehyde adhesive applied on plywood

International Journal of Physical Sciences

Murat Ozalp¹ 

关键词: Bending strength;    aluminum sulfate;    free formaldehyde content;    plywood.;   

DOI  :  10.5897/IJPS2013.3878

学科分类：物理（综合）

来源: Academic Journals

【 摘 要 】

In the present study, the effects of adding the aluminum sulfate to the urea-formaldehyde (UF) adhesive, on the bonding characteristics and free formaldehyde content, have been studied. Experiments were conducted on the three layered plywood of ekaba (Tetraberlinia bifoliolata) and poplar (Populus x eureamericana), prepared by adding aluminum sulfate to the adhesive mixtures of these tree species in certain amounts. Further, in the produced plywoods, the bending strength for BS EN 310, the withdrawal shear strength for BS EN 314-2, and free formaldehyde content for ENV 717-2 were analyzed, and the obtained results were compared. It was seen that the addition of aluminum sulfate to the adhesive mixture used on the plywood increased its bending strength and withdrawal shear strength, but reduced the free formaldehyde content significantly.

【 授权许可】

CC BY