TBTO absorption and penetration in pine joinery treated by various processes

IRG/WP 3523

P A Cooper, Y T Ung

Matched sections of several White pine (Pinus strobus) and Ponderosa pine (Pinus ponderosa) mouldings were treated with TBTO by Double vacuum, modified empty-cell, 15 second dip and several preheating treatments followed by a 15 s dip treatments. As expected the double vacuum and empty-cell (batch) treatments resulted in much greater retentions and penetrations than the dip treatments. The absorptions by the 15 s dip treatments could be improved significantly by preheating the wood to 60-90C° by microwave, radio-frequency or infra-red techniques. Since this approach is amenable to a continuous treatment process, it is being evaluated for potential commercial application.


Keywords: ABSORPTION; DIPPING; DOUBLE-VACUUM; EMPTY-CELL PROCESS; TBTO; MICROWAVE HEATING; PENETRATION; PREHEATING; RADIO-FREQUENCY; PINUS STROBUS; PINUS PONDEROSA

Conference: 89-05-22/26 Lappeenranta, Finland


Download document (438 kb)
free for the members of IRG. Available if purchased.

Purchase this document