Document Type : Composite Wood Products
Authors
1 M.Sc. Graduated of Wood Composite Products, Gonbad Kavous University, Gonbad Kavous, Iran
2 Assistant Prof., Wood and Paper Science and Technology, Gonbad Kavous University, Gonbad Kavous, Iran
3 Associate Prof., Wood and Paper Science and Technology, Gonbad Kavous University, Gonbad Kavous, Iran
Abstract
Background and objectives: Many studies have been conducted on the use of cellulosic resources to provide portion of raw materials for wood and paper industries. Waste branches for some species such as palm and prosopis in southern parts of country can be a solution for deficiency of raw material in wood and paper industries. This study investigated the possibility of using a combination of prosopis and industrial wood particles to produce particleboard with acceptable physical and mechanical properties.
Methodology: The variables in this study were the ratio of Prosopis cineraria to industrial wood particles at four levels (0:100, 15:85, 30:70, 45:55) and urea formaldehyde resin at two levels (10 and 12 percent). Industrial wood particles from Sanate Choube Shomal Company and prosopis particles were obtained from the province of Sistan and Baluchistan. Ammonium chloride as a hardener was used at 2 percent of the dry weight of the adhesive. After mixing raw material, the mat was placed under hot pressing at a temperature of 170 ˚C for 6 minutes. After the manufacture of the single-layer particleboard, the physical and mechanical properties of the boards were analyzed by a factorial test in a completely randomized design with a confidence level of 5 %.
Results: The results showed that the physical and mechanical properties of the panels decreased as the percentage of mixture prosopis particles increased. So that, panels containing 45% prosopis particles and 10% urea-formaldehyde resin had the lowest mechanical properties, while panels containing 12% urea-formaldehyde resin without prosopis particles had the best mechanical properties. Panels containing 45% prosopis particles and 12% urea-formaldehyde resin had the lowest water absorption and thickness swelling, while panels containing 10% urea-formaldehyde resin without prosopis particles had the highest.
Conclusion: According to the results of this study, there was usability of boards with 15% prosopis particles and 10% resin for Type P1 boards and the boards with 15% prosopis particles and 12% resin for Type P2 boards.
Background and objectives: Many studies have been conducted on the use of cellulosic resources to provide portion of raw materials for wood and paper industries. Waste branches for some species such as palm and prosopis in southern parts of country can be a solution for deficiency of raw material in wood and paper industries. This study investigated the possibility of using a combination of prosopis and industrial wood particles to produce particleboard with acceptable physical and mechanical properties.
Results: The results showed that the physical and mechanical properties of the panels decreased as the percentage of mixture prosopis particles increased. So that, panels containing 45% prosopis particles and 10% urea-formaldehyde resin had the lowest mechanical properties, while panels containing 12% urea-formaldehyde resin without prosopis particles had the best mechanical properties. Panels containing 45% prosopis particles and 12% urea-formaldehyde resin had the lowest water absorption and thickness swelling, while panels containing 10% urea-formaldehyde resin without prosopis particles had the highest.rosopis particles and 10% urea-formaldehyde resin had the lowest mechanical properties, while panels containing 12% urea-formaldehyde resin without prosopis particles had the best mechanical properties. Panels containing 45% prosopis particles and 1
Keywords
Main Subjects
)