Research of suitability of some mechanical properties of particle board produced from cotton stalks to standards

Abstract

Today, reduction of forest resources and wood-based panel production of intense pressure from environmentalists on this issue has led to new searches. At this point, various studies and researches are carried out on the subject.This research was also planned within this scope. In this study, mechanical properties of particle boards (650 kg/m3) produced using urea cotton stalks and wood (% 100, 75, 50, 25, 0) for general purposes under laboratory conditions were investigated. At the same time, the results were compared with relevant standards. For production of particleboards, urea formaldehyde resin (65%) and as hardening agent ammonium chloride (33%) were used. The result showed that the mean value of bending strength, modulus of elasticity and resistance to axial withdrawal strength of the specimens, janka results ranged from 13.11 to 18.01 N/mm2, from 2819 to 4620.8 N/mm2, from 984.6 to 1089.4, from 0.55 to 0.97 N/mm2 and from 32.2 to 54.41 N/mm2, respectively. In the statistical analysis, (except for 100% wood chip) it was understood that, properties of the particleboards have improved with the rising percentage of wood particles in the particleboards. In addition, it was determined that the bending resistance and the modulus of elasticity in bending, the tensile strength perpendicular to the surface and the screw holding resistance perpendicular to the surface were meet the minimum requirements required in TS-EN 310, TS EN 319 and BS 1811, respectively.