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RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 1 Rubberwood preservation by friendly preservatives Mingliang Jiang, Zhijun.

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Presentation on theme: "RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 1 Rubberwood preservation by friendly preservatives Mingliang Jiang, Zhijun."— Presentation transcript:

1 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 1 Rubberwood preservation by friendly preservatives Mingliang Jiang, Zhijun Wang Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China Dec 8-10, 2008 Haikou, China

2 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 2 Contents 1. Brief introduction of wood and rubberwood preservation 2. Treatment specification and quality control 3. Laboratory test of Antistain and Antimold Formulations on rebberwood (ITTO 1996-1998) 4. Laboratory test of Antistain and Antimold Formulations (2003-2007) 5. Technical report of vacuum pressure treatment by NaPCP free preservative during 2006-2007

3 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 3 1 Brief introduction of wood and rubberwood (RW) preservation

4 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 4 Wood preservation in China Railway sleeper by creosote Exterior uses treated by CCA/ACQ/CuAz Indoor uses of rubberwood by boron

5 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 5 ACQ treated Chinese fir for exterior use, Anhui, 2006

6 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 6 RW Preservation in China Began on 1970 s Today mainly by vacuum/pressure process

7 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 7 Sawing of rubberwood

8 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 8 The rubberwood treated

9 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 9 Some facts on RW preservation : The rubberwood timber production in China is about 0.4 millionM 3 /a in the recent years 100 rubberwood treating plants in China The RW timber mainly used for furniture making RW primary products: timber, particleboard, plywood

10 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 10 2 Treatment specification and quality control

11 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 11 Specification for the treated wood:LY/T1636-2005 Specification for the treated rubberwood: No specific standard currently Usually adopt 0.4 % BAE (Malaysia for wood) Ref: LY/T1636-2005(wood for C1: 2.8kg/m 3 B 2 O 3 )

12 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 12 Penetration check

13 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 13 Solution for checking boron

14 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 14 Drying rubberwood, Red-Present of boron; Yellow- without boron

15 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 15 No spraying Fresh treated rubberwood spraying with reagent solution

16 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 16 Retention determination

17 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 17 By chemical analysis of boron:Titration,ICP etc Retention calculation by treating record

18 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 18 Treating record for each charge at Lezhong Wood Factory, Hainan

19 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 19 3 Laboratory test of Antistain and Antimold Formulations (1996-1998) 3.1 Experimental methods

20 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 20 Rubberwood sample size: 50×20×1 mm, maple 40×20×3 mm. Fungicidal formulations for stain control: F1, F2: chlorothalonil/carbendizam fungicides.

21 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 21 Ranking Standard 1 - Clean: stain or mold covering less than 5% upper surface. 2 - Light stain: stain or mold covering 5 -20% upper surface. 3 - Moderate stain: stain or mold covering 20-40 % upper surface. 4 - Heavy stain: stain or mold covering more than 40% upper surface.

22 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 22 3.2 Results

23 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 23 Table 1. Comparison of the effectiveness of anti-sapstain treatments against Botryodiplodia theobromae Pat. on rubberwood Anti-sapstain Treatment Average Std Untreated Control 4.0 0.0 0.25%NaPCP 4.0 0.0 0.5%NaPCP 3.0 0.0 1%NaPCP 3.0 0.0 1.0%F1 F 3.0 0.0

24 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 24 0.20%F2 2.0 0.0 0.40%F2 1.0 0.0 0.5%F1 E +0.10%F2 1.0 0.0 0.5%F1 E +0.20%F2 1.0 0.0 0.5%F1 F +0.05%F2 1.0 0.0 0.5%F1 F +0.10%F2 1.0 0.0 0.5%F1 F +0.20%F2 1.0 0.0

25 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 25 Conclusion for 3 The formulations containing 0.05-0.2% F2, mixed with 0.5%F1 or 0.40%F2 alone are effectiveness for controlling Botryodiplodia theobromae in lab test.

26 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 26 4 Laboratory test of Antistain and Antimold Formulations (2003-2007) 4.1 Experimental methods

27 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 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.

28 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 28 4.1.2 Fungicides for the test

29 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 29 Table 2: Fungicidal formulations for the stain control test Formulations Common name Formulation types CTLChlorothalonilEmulsion CBZCarbendazim 50% wetable power Benomyl 50% wetable power BAC Dodecyl dimethyl benzyl ammonium chloride Water solution Cu-8Copper oxine Acetic acid solution DDAC Didecyl dimethyl ammonium chloride Water solution PPZPropiconazole Emulsion TEBTebuconazole Emulsion

30 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 30 4.1.3 Method for stain control

31 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 31 4.2 Results

32 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 32 Table 3: Result of the stain control test Formulations Concentrations of a. i.B t CBZ 0.001%36.6 0.005%39.2 0.010%40.1 0.02%40.6 0.10%41.2 0.20%43.6

33 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 33 Formulations Concentrations of a. i.B t benomyl 0.001%32.4 0.005%35.5 0.010%37.0 0.02%38.1 0.10%40.7 0.20%50.6 Contd

34 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 34 Contd Formulations Concentrations of a. i.B t CBZ+Cu-8 0.01%+0.01%21.4 0.01%+0.05%22.3 0.01%+0.1%23.8 0.1%+0.2%42.3 0.1%+0.5%47.2 0.2%+0.5%59.7

35 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 35 Contd Formulations Concentrations of a. i.B t Benomyl+Cu-8 0.005%+0.01%42.7 0.01%+0.01%43.1 0.02%+0.01%46.1 0.02%+0.02%48.9 0.1%+0.02%50.4 0.2%+0.08%52.9

36 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 36 Conclusion for 4 Some formulations containing CBZ, Benomyl, Cu-8 have excellent effectiveness for the controlling of Botryodiplodia theobromae Pat.

37 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 37 5 Technical report of vacuum pressure treatment by NaPCP free preservative during 2006-2007

38 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 38 5.1 Materials and method 5.1.1 Materials Fresh rubberwood timber.

39 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 39 Formulatio ns Boric acidBorax F2 Site 10.501.00 0.035- 0.045 Site 21.000.20 0.035- 0.050 5.1.2 Preservatives

40 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 40 5.1.3 Test sites and treating procedure Vacuum pressure treatment was used in the following procedure.

41 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 41 Site 1 Lezhong Wood Factory, Hainan Nongken Wood Co duration Aug 3, 2006 – May 31, 2007.

42 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 42 Site 1: Schedule for the rubberwood Vacuum / Pressure treatment PhaseVacuum / Pressure (Mpa)Duration (min) Initial vacuum0.0215 Pressure1.235 Final vacuum0.01510

43 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 43 Fungicide F2 for stain control made in Jiangsu, China

44 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 44 Tank for preparation of treating solution at Lezhong wood plant

45 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 45 Control panal

46 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 46 Site 2 Cangjiang Wood Plant, Xishuangbanna, Yunnan Province. duration July 24, 2006 – Oct 31, 2006.

47 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 47 Site2: Schedule for the rubberwood Vacuum / Pressure treatment PhaseVacuum / Pressure (Mpa)Duration (min) Initial vacuum0.0215 Pressure1.160 Final vacuum0.0210

48 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 48 Tank for preparation of treating solution in Cangjiang wood plant, Yunnan

49 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 49 RW timber before treatment

50 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 50 Air drying after treatment prior to kiln

51 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 51 5.2 Results This field demonstration indicated that F2 could prevent the treated timber for 15-20 days from stain and mold during air drying.

52 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 52 Fungicide carbendazim (F2) can be used for stain and mold control instead of NaPCP. Conclusion for 5

53 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 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 98-30175. 29th IRG, Maastricht, Netherlands, June 14-19, 1998. Mingliang Jiang. Polit test of antisapstain and mold formulations on rubberwood, China Wood Industry (Chinese), 2001,2 Mingliang 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), 21-22. 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), 22-24. 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 07-30430

54 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 54 The support and cooperation of Lezhong and Cangjiang wood plant for the field treatment are much appreciated.

55 RESEARCH INSTITUTE OF WOOD INDUSTRY (CRIWI), CHINESE ACADEMY OF FORESTRY (CAF) 55 Thanks for your attention! wish you have a nice stay during the workshop and visiting tour around the Island.


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