Bvanaghi, F., Ghorbani, M., Kargarfard, A. (2012). Effects of acetylation and press time on heat transfer in particleboard mat from Hornbeam wood (Carpinus betulus). , 27(3), 510-521. doi: 10.22092/ijwpr.2012.116212
Fatemeh Bvanaghi; Maryam Ghorbani; Abolfazl Kargarfard. "Effects of acetylation and press time on heat transfer in particleboard mat from Hornbeam wood (Carpinus betulus)". , 27, 3, 2012, 510-521. doi: 10.22092/ijwpr.2012.116212
Bvanaghi, F., Ghorbani, M., Kargarfard, A. (2012). 'Effects of acetylation and press time on heat transfer in particleboard mat from Hornbeam wood (Carpinus betulus)', , 27(3), pp. 510-521. doi: 10.22092/ijwpr.2012.116212
Bvanaghi, F., Ghorbani, M., Kargarfard, A. Effects of acetylation and press time on heat transfer in particleboard mat from Hornbeam wood (Carpinus betulus). , 2012; 27(3): 510-521. doi: 10.22092/ijwpr.2012.116212

Effects of acetylation and press time on heat transfer in particleboard mat from Hornbeam wood (Carpinus betulus)

تحقیقات علوم چوب و کاغذ ایران
Article 11, Volume 27, Issue 3 - Serial Number 40, September 2012, Pages 510-521    PDF (614.06 K)
Document Type: Research Paper
DOI: 10.22092/ijwpr.2012.116212
Authors
Fatemeh Bvanaghi1; Maryam Ghorbani* 2; Abolfazl Kargarfard3
1M.Sc., Department of Wood and Paper, Natural Resources Faculty, Sari Agricultural Sciences and Natural Resources University
2Assistant Prof., Department of Wood and Paper Sciences, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University, Sari, Mazandaran, Iran
3Wood and Forest Products Science Research Division, Research Institute of Forests and Rangelands, Tehran, Iran,
Abstract
Effects of acetylation and press time on heat transfer to the core layer of particleboard mat in hot pressing were investigated. Particleboard was made using hornbeam particles. Particles were soaked in acetic anhydride for 24 hours to reach three degrees of acetylation (8, 12 and 17%). The treated particles were heated by oven at 120°C for 40, 180 and 360 minutes, respectively. Acetylated and non-treated (control) particle were blended with 10% melamine urea formaldehyde (based on the oven-dry weight of particles) and and then pressed to make boards. During pressing operation of particle mat, heat transfer to the middle layer of the mat was measured by a Cr- Ni wires thermocouple. Three press times (5, 6 and 7 minutes) were used in the manufacturing process. Results showed that increasing the degrees of acetylation, heat transfer decreased. In control samples and in low-degree modification (8%), in the early period, core temperature reached 100°C. At 12%, after 390 seconds and at the highest degree (17%) even in the longer press time (7min), the core layer temperature did not reach to 100°C.
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