Presentation on theme: "Rubberwood preservation by friendly preservatives"— Presentation transcript:
1 Rubberwood preservation by friendly preservatives Mingliang Jiang, Zhijun WangResearch Institute of Wood Industry, Chinese Academy of Forestry, Beijing , ChinaDec 8-10, 2008Haikou, China
2 Contents Brief introduction of wood and rubberwood preservation Treatment specification and quality controlLaboratory test of Antistain and Antimold Formulations on rebberwood (ITTO )Laboratory test of Antistain and Antimold Formulations ( )Technical report of vacuum pressure treatment by NaPCP free preservative during
3 1 Brief introduction of wood and rubberwood (RW) preservation
4 Wood preservation in China Railway sleeper by creosoteExterior uses treated by CCA/ACQ/CuAzIndoor uses of rubberwood by boron
5 ACQ treated Chinese fir for exterior use, Anhui, 2006
6 RW Preservation in China Began on 1970’sToday mainly by vacuum/pressure process
9 Some facts on RW preservation: The rubberwood timber production in China is about 0.4 millionM3 /a in the recent years100 rubberwood treating plants in ChinaThe RW timber mainly used for furniture makingRW primary products: timber, particleboard, plywood
11 Specification for the treated wood:LY/T1636-2005 Specification for the treated rubberwood:No specific standard currentlyUsually adopt 0.4 % BAE (Malaysia for wood)Ref: LY/T (wood for C1: 2.8kg/m3 B2O3)
23 Anti-sapstain Treatment Average Std Table 1. Comparison of the effectiveness of anti-sapstain treatments against Botryodiplodia theobromae Pat. on rubberwoodAnti-sapstain TreatmentAverage StdUntreated Control4.00.00.25%NaPCP0.5%NaPCP3.01%NaPCP1.0%F1（F）
25 Conclusion for 3The formulations containing % F2, mixed with 0.5%F1 or 0.40%F2 alone are effectiveness for controlling Botryodiplodia theobromae in lab test.
26 4 Laboratory test of Antistain and Antimold Formulations (2003-2007) 4.1 Experimental methods
27 4.1.1 Fungal species and their characteristic Five fungal species were identified as：Bt: Botryodiplodia theobromae Pat.,Fv: Fusarium verticillioides(Sacc.)Nirenberg,Th: Trichoderma harzianum Rifai,Tv: Trichoderma viride Pers.,Pp: Penicillium purpurogenum Stoll.
51 5.2 ResultsThis field demonstration indicated that F2 could prevent the treated timber for days from stain and mold during air drying.
52 Conclusion for 5Fungicide carbendazim (F2) can be used for stain and mold control instead of NaPCP.
53 Related publications of this RW project: Mingliang Jiang, Terry L. Highley, Leslie Ferge, Thomas L. Woods. Laboratory Evaluation of Chrolothalonil Formulation for Stain and Mold Control on Rubberwood and Maple, International Research Group on Wood Preservation, IRG/WP th IRG, Maastricht, Netherlands, June 14-19, 1998.Mingliang Jiang. Polit test of antisapstain and mold formulations on rubberwood, China Wood Industry (Chinese), 2001,2Mingliang Jiang. China Wood Industry (Chinese), 1998, 12(3).Mingliang Jiang. Current Research Situation of the New Wood Preservative Chlorothalonil, China Wood Industry, 1997,11(4),Xiuying Liu, Mingliang Jiang. Currently Situation of Rubberwood Processing and Utilization Technology in China, China Wood Industry, 1997, 11(5), 6-8.Mingliang Jiang et al. Overview on Rubberwood Preservation Technology, China Wood Industry, 1996, 10(6),ITTO technical report: Currently Situation of Rubberwood Processing and Utilization Technology in China, CRIWI, Beijing, 1995.Mingliang Jiang et al. Laboratory test of blue stain control by chemicals, IRG
54 The support and cooperation of Lezhong and Cangjiang wood plant for the field treatment are much appreciated.
55 Thanks for your attention! wish you have a nice stay during the workshop and visiting tour around the Island.