Document Type : Research Paper

Authors

• Lila Asadi khoramabadi ¹
• Abolghasem Khazaeian ²
• Mohammad reza Masteri Farahani ³
• Alireza Shakeri ⁴

¹ Master of Science Wood Composites, Gorgan University of Agricultural Sciences and Natural Resources, Golstan, Iran

² Associate Prof., Dept. of Wood Engineering and Technology, Gorgan University of Agricultural Sciences and Natural Resources, Golestan, Iran

³ Assistant Professor, Dept. of Wood Engineering and Technology, Gorgan University of Agricultural Sciences and Natural Resources, Golestan, Iran

⁴ Associate Prof., of chemistry, Golestan University, Iran

Abstract

Heat treatment is one of the processes used to modify the properties of wood. The investigation of thermal treatment of wood has led to the improvement of heat treatment with vegetable oils. Heat treatment improves the dimensional stability and biological durability, but reduces the mechanical properties of wood. In this research, to improve the mechanical properties with other properties of wood, soybean oil modified with maleic anhydride was used for thermal treatment. Wood speciments were subjected to heat treatment soybean oil modified with maleic anhydride at two temperature (180 and 200° C ) and three time (2, 4 and 6 hours). Untreated beech was used as comparison for each treatment conditions. In this study, the effects of heat treatment on physical properties )water absorption and volumetric changes) and mechanical properties such as Bending strength) ISO 3133-1975(, Compression strength Parallel to grain) ISO 3787-1976 (and Impact bending) DIN 52189( were examined. The test results of heat-treated with modified soybean oil and control samples showed that physical and mechanical properties increases with heat treatment.

Keywords

• heat treatment
• beech
• Soybean oil
• maleic anhydride
• physical properties
• Mechanical properti

Main Subjects

• Biology and Wood Protection