Journal of the Korean Wood Science and Technology
- Volume 21 Issue 1
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- Pages.51-58
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- 1993
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- 1017-0715(pISSN)
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- 2233-7180(eISSN)
Synthesis and Bonding Properties of Phenol·Resorcinol·Formaldehyde Resin Adhesives
페놀·레조르시놀 수지의 합성과 접착성능
- Roh, Jeang-Kwan (Forestry Research Institute)
- 노정관 (임업연구원)
- Received : 1993.03.10
- Published : 1993.03.30
Abstract
The phenol resorcinol formaldehyde resin (PRF) adhesives which are curing at ambient temperature for structural purposes were synthesized. A PRF resin is produced according to the two-stage reaction system. In first stage, a low-condensed resol or methylolated phenol were prepared from phenol by reaction with a formaldehyde in alkaline condition. The molar ratio of phenol to formaldehyde was 1.0~1.4. And in second-stage, resorcinol was added to combine with the methylol group of a low-condensed resol(R/P molar ratio 0.3). The glue-joint strength, pot-life and workability of this synthetic PRF resin were superior to conventional ambient temperature setting adhesives such as oilic urethane or water based polymer-isocyanate resin for wood adhesives.