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Effect of Fire Retardant Chemicals on Glue Shear Strength of Plywood
Plywood and other composite wood items are susceptible to fire and degradation, however on treatment with fire retardant chemicals glue shear strength of plywood fairly decreases. In the present study, plywood was prepared from Poplar veneers using urea formaldehyde resin and treated with seven different fire retardant compositions. After treatment, the plywood was tested for glue shear strength and for fire retardance (flame penetration, rate of burning and flammability test) as per Indian standards. It was found that plywood treated with all seven compositions passed the fire retardant tests whereas plywood treated with four compositions passed the glue shear strength test.
Fire Retardants, Plywood, Glue Shear Strength.
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