Cold soaking treatment of three handicraft wood species using two boron preservatives
1992
Abdurrohim, S. (Pusat Penelitian dan Pengembangan Hasil Hutan, Bogor (Indonesia))
Three wood species, i.e tusam (Pinus merkusii Juhn. et De Vr.), karet (Hevea brasiliensis Muell. Arg.) and jeungjing (Paraserianthes falcataria (L.) Nielsen) were treated with two boron preservation using cold soaking method. The two preservatives used were borax at 5 percent level and the mixture of borax and boric acid at 10 percent level. The soaking periods were 1, 3, 5 and 7 days. Forty samples of the size 5 x 5 x 50 cm were used for each species and each treatment in this experiment. The average moisture content of the samples for each species was 29.9 percent, 31.9 percent and 30.3 percent respectively. The results showed that two species, i.e. tusam and karet achieved the minimum standard on preservative retention and pentative. The required minimum retention for borax preservative is 8.7 kg/cubic meter, whereas for the mixture of borax and boric acid is 8.4 kg/cubic meter. The required minimum penetration for both preservatives is 10 mm. The study recommended that tusam should be treated in 5 days using borax preservative of 1 day using the mixture of borax and boric, both with cold soaking method. The treatment for karet was recommended to use the mixture of borax and boric acid within 3 days.
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