Abstract
Treatment of plywood with fire retardant chemicals requires pressure treating the plywood with chemicals for sufficient period to get desired retention. However, the pressure treatment requires installation of treatment cylinders of the size of plywood to be treated which might be a limiting factor. In the present study, five different fire retardant compositions were prepared for the treatment of veneers and plywood were prepared from the treated veneers. The prepared plywoods samples were tested for glue shear strength, flame penetration, rate of burning and flammability tests. It was found that the composition containing phosphoric acid was the best performer in fire retardance without compromising on the glue shear strength.
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