Journal of the Korean Wood Science and Technology
- 제21권1호
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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)
페놀·레조르시놀 수지의 합성과 접착성능
Synthesis and Bonding Properties of Phenol·Resorcinol·Formaldehyde Resin Adhesives
초록
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.