Investigation on the effect of mixed rapeseed stalk residues with wood particles, and mixing of melamine and urea formaldehyde resin on properties of manufactured particleboard

Document Type : Research Paper

Authors

1 Assistant Professor, Department of Paper and Packaging Technology, Faculty of Chemistry and Petrochemical Engineering, Standard Research Institute (SRI)

2 MSc, Department of Wood Science and Technology, Chalous Branch, Islamic Azad University, Iran

3 Assistant Professor, Department of Wood Science and Technology, Chalous Branch, Islamic Azad University, Iran

Abstract

In this study, the possibility of using the rapeseed stalk mixed with industrial wood particles for manufacturing particleboard with target density of 0.7 gr/cm3 was considered. Variable factors such as mixing ratios of rapeseed stalk with industrial wood particles at five mixing levels of (0-100, 25-75, 50-50, 75-25 and 100-0 percent), mixing ratios of melamine resin with urea formaldehyde at three levels of 0-100, 15-85 and 30-70 percent, and kind of board at two levels of homogenate and layer were considered. 10 percent resin based on oven dried weight of particles, 2 percent catalyzer based on oven dried weight of resin, press temperature and time with 170 OC and 7 minute, press pressure and rate with 30 Kg/cm3 and 4.5 mm/min were fixed. Then, the boards were manufactured and the physical and mechanical properties including modulus of rupture, modulus of elasticity, internal bonding, water absorption and thickness swelling were measured according to EN standard. Results indicated that the modulus of rupture, modulus of elasticity, water absorption and thickness swelling of boards increased with increase rapeseed stalk loading; however, the internal bonding decreased. Also, the use of melamine urea formaldehyde resin caused to improve the mechanical strength and dimensional stability in the samples.

Keywords

References

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Iranian Journal of Wood and Paper Industries
Volume 7, Issue 2 - Serial Number 2
September 2016
Pages 167-178

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