Journal of the Korean Wood Science and Technology
- Volume 23 Issue 3
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- Pages.33-39
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- 1995
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- 1017-0715(pISSN)
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- 2233-7180(eISSN)
Fast-Curing of Phenol·Formaldehyde Resin Adhesives for Plywood
합판용 페놀수지 접착제의 속경화
- Roh, Jeang-Kwan (Forestry Research Institute)
- 노정관 (임업연구원)
- Received : 1995.03.21
- Published : 1995.09.30
Abstract
To accelerate the cure of phenolic resin adhesives for plywood, the complexation with melamine resin and the addition of cure-accelerating agents were discussed. The hot-pressing temperature and time of phenol resin could be decreased by complexation with melamine resin. but the wet glue-joints strength of phenol melamine resin was lower than that of ordinary phenol resin in case of plywood using spruce veneer at core layer. Among the tested cure-accelerating agents. the sodium carbonate showed the greatest effect on shortening gelation time of phenolic resin. In addition, in the manufacturing scale test, the hot-pressing time of phenol resin with the addition of 5 parts sodium carbonate could be shortened about 20% compared with ordinary phenol resin which had same glue-joints properties.