Effect of wood acidity and catalyst on UF resin gel time

Holzforschung

Volumn 58, Issue 4, 2004, Pages 408-412

  Xing, Cheng ^a   Zhang, S Y ^a   Deng, James ^a  

^a FORINTEK CANADA CORP   (Canada)

Author keywords

Absolute acid buffering capacity; Catalyst; Gel time; Less desirable wood material; PH; Relative acid buffering capacity; UF resin

Indexed keywords

ACIDITY; CATALYSTS; GELS; MIXTURES; NATURAL FIBERS; PH; RAW MATERIALS; RESINS;

ABSOLUTE ACID BUFFERING CAPACITY; GEL TIME; LESS-DESIRABLE WOOD MATERIALS; RELATIVE ACID BUFFERING CAPACITY; UF RESINS;

WOOD PRODUCTS;

ACIDITY; CATALYSTS; GELS; MIXTURES; PH; RAW MATERIALS; SYNTHETIC POLYMERS; WOOD PRODUCTS;

EID: 3342968678     PISSN: 00183830     EISSN: None     Source Type: Trade Journal    
DOI: 10.1515/HF.2004.061     Document Type: Article

References (12)

1. Albritton, R.O., Short, P.M. (1979) Effects of extractives from pressure-refined hardwood fiber on the gel time of urea-formaldehyde resin. For. Prod. J. 29(2):40-41. ASTM standard (2001) D4426-01. Standard test method for determination of percent novolatile content of liquid phenolic resins used for wood laminating.
2. Albritton, R.O., Short, P.M. (1979) Effects of extractives from pressure-refined hardwood fiber on the gel time of urea-formaldehyde resin. For. Prod. J. 29(2):40-41. ASTM standard (2001) D4426-01. Standard test method for determination of percent novolatile content of liquid phenolic resins used for wood laminating.
3. Quo, A.L., Zhang, H.S., Feng, L.Q., Gao, X.X., Zhang, G.L (1998) pH value and buffering capacity of 6 shrub species and relevant effect on curing time of UF resin. Chine Wood Indu. 12(5): 18-20.
4. Johns, W.E., Niazi, K.A. (1980) Effect of pH and buffering capacity of wood on the gelation time of urea-formaldehyde resin. Wood Fiber Sci. 12(4):255-263.
5. Park, B.D., Kim, Y.S., Riedl, B. (2001) Effect of wood-fiber characteristics on medium density fiberboard (MDF) performance. J. Korean Wood Sci. Technol. 29(3):27-35.
6. Peng, H.Y., Li, J. (1983) Effect of pH and the buffering capacity of economic wood species growing in northeast on the gel time of urea-formaldehyde resin. J. Nor. Eas. For. Ins. China. 11 (4): 100-105.
7. Pizzi, A., Mtsweni, B., Parsons, W.J. (1994) Wood-induced catalystic activation of PF adhesives autopolymerization vs. PF/ wood covalent bonding. J. Appl. Polymer. Sci. 52(13):1847-1856.
8. Pizzi, A., Panamgama LA. (1995) Diffusion hindrance vs. wood-induced catalytic activation of MUF adhesive polycondensation. J. Appl. Polymer. Sci. 58(1):109-115.
9. Roffael, E., Dix, B., Khoo, K.C., Ong, C.L, Lee, T.W. (1992) Medium density fiberboard (MDF) from young poplar (populus trichocarpa) of different properties. Holzforschung 46(2):163-170.
10. Slay, J.R., Short, PH., Wright, D.C. (1980) Catalytic effect of extractives from pressure-refined hardwood fiber on the gel time of urea-formaldehyde resin. For. Prod. J. 30(3):22-23.
11. Van Niekerk, J., Pizzi, A. (1994) Characteristic industrial technology for exterior Eucalyptus particleboard. Holz Roh Werk-stoff. 52:109-112.
12. Zanetti, M., Pizzi, A. (2003) Upgrading of MUF resins by buffering additives-part 2: hexamine sulphate mechanisms and alternate buffers. J. Appl. Polymer. Sci. 90(1):215-226.