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The manufacture of particleboard using tannin-modified urea formaldehyde adhesive | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| Article 6, Volume 28, Summer 2 - Serial Number 43, June 2013, Pages 266-276 PDF (217.81 K) | ||
| DOI: 10.22092/ijwpr.2013.2792 | ||
| Authors | ||
| ُSima Sepahvand* 1; Saeid Ziaee Khosro Shahi2; Tagi Tabarsa3 | ||
| 1M.Sc., Student of Wood Composites, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran. | ||
| 2M.Sc., Student of Wood and Paper Science, Tehran University of Natural Resources ,Iran | ||
| 3Prof. of Wood and Paper Science, Gorgan University of Agricultural Science and Natural Resources, Department of Wood and Paper Technology. Gorgan, Iran. | ||
| Abstract | ||
| This study provides an investigation of particleboard manufacture using tannin-urea formaldehyde adhesive. Test board samples were made with regard to various replacement percentage of tannin–urea (levels of 0, 10, 20 and 30%) and press time (12 and 15 min) and their properties were determined. Achieved data were analyzed according to two sides factorial plan. The results showed that with replacement of 10% urea formaldehyde adhesive by tanninformaldehyde at both 12 and 15 min pressing times, thickness swelling (after 2 and 24 hours immersion in water) was decreased while internal bonding increased. There were no significant effect on MOR and MOE values. In general, the results of present research showed that replacing the UF resin at lower levels of tannin is suitable as adhesive to manufacture particleboard so that with replacement ratio of 90:10, the moisture properties of boards were very close to permissible those of the exterior wood uses. | ||
| Keywords | ||
| Particleboard; tannin - urea formaldehyde adhesive; press time; modulus of rupture; Internal bonding | ||
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