Modeling of properties of the oriented strand board in STATGRAPHICS

Abstract

This study is done to obtain experiment-statistical mathematical model of OSB properties depending from two factors: hot pressing stage overall time and hardener content in a binder based on phenol-cardanol-formaldehyde resin. A laboratory scale sample of phenol-cardanol-formaldehyde resin with substitution of 5 % by weight of phenol to cardanol with a molar ratio phenols (phenol + cardanol) to formaldehyde equal 1 to 2.33 (resin grade SFJ-OSB 5K) was prepared in R&D Center of PJSC “Uralchimplast”. As the hardener of the resin SFZH-OSB 5K, technical propylene carbonate was used. Average strands dimensions were: 40 - 80 mm length, 20 - 30 mm width and 0,5-0,8 mm thickness. Hot pressing of the wood chips briquette was performed in 11 minutes with heated press plates temperature of 180-190 ° by a three stage regime with maximum pressure of 2MPa. To study the influence of technological factors on the properties of OSB, a three-level full two-factor experiment on the Kono plan was performed, obtaining regression-based experimental statistical models of the properties of the object under study in the Statgraphics Centurion XV program. The received results of researches have shown the good opportunities of program Statgraphics Centurion XV for reception of regression mathematical models of properties of laboratory samples of plates OSB, describing laws of influence of technological factors on them. The resulting regression models, after checking their adequacy under industrial conditions, can be used to predict the properties of OSB and to control their quality. © 2018 CEUR-WS. All rights reserved.