نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانش‌آموخته کارشناسی ارشد فراورده‌های چندسازۀ چوب، دانشکدۀ منابع طبیعی دانشگاه زابل
2 دانشیار گروه علوم و صنایع چوب و کاغذ، دانشکدۀ منابع طبیعی دانشگاه زابل
3 دانشجوی دکتری فراورده‌های چندسازه چوب، دانشکدۀ منابع طبیعی دانشگاه زابل
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
The aim of this study was to manufacture of green particleboard with natural adhesive from corn / soybean meal flour. The physical and mechanical properties of obtained particleboard were characterized under different conditions of press at dry environment. Variable agents of adhesive were two levels of press pressure; 15 and 17.5 kg/cm2 and three levels of press time; 600, 660 and 720 seconds. The corn / soybean meal flour with a ratio of equal, mixed with water to produce the adhesive. Sulfuric acid and sodium hydroxide were added to the adhesive mixture to decrease viscosity and increase adhesion, respectively. Then the particles blended with adhesive 15 wt%, and pressed at 190°C. In addition, the samples were prepared for physical and mechanical tests according to the European standards. The results showed that the bending properties and internal bonding increased with increasing press time to 660 seconds. while, the highest internal bonding was obtained at 0.5 MPa under 17.5 kg/cm2 pressures and time of 660 seconds. Also, water absorption and thickness swelling of the specimens after 2 and 24 h immersion decreased with increasing in press time to 660 seconds. Therefore, this adhesive can be used as a suitable alternative for the urea formaldehyde glue that has a risk of formaldehyde emission in interior locations.
کلیدواژه‌ها [English]
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