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โครงการรวบรวมและจัดทําวารสารอิเล็กทรอนิกส์ มหาวิทยาลัยเกษตรศาสตร์

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Internal bonding (MPa) ≥ 0.40 ≥ 0.3 ≥0.34 0.53 0.79 0.85 1.78 2.15 1.98 0.40 0.55 0.44 1.54 1.15 1.13 0.99 0.74 0.67 1.86 2.43 2.60 0.26 0.20 0.44 1.04 1.42 1.20 0.38 0.39 0.38 1.00 1.06 1.07

Widthwise modulus of elasticity (MPa) ≥ 1,800 ≥1,300 ≥1,400 863 1,326 777 1,083 1,608 1,210 374 3,036 662 812 1,650 1,611 1,620 1,050 1,837 1,167 1,560 1,638 1,000 676 652 1,035 1,003 1,066 784 583 601 928 1,032 839

Length- wise modulus of elasticity (MPa) ≥ 1,800 ≥ 4,000 ≥ 3,500 6,843 7,717 7,826 7,175 8,109 9,888 5,464 5,742 5,602 7,757 5,974 6,156 5,181 6,723 4,702 7,262 7,288 7,782 4,374 4,048 4,958 6,613 5,932 5,814 4,264 3,546 4,119 3,881 4,579 4,650

Table 2 Comparison of properties of oriented strand board from fruit trees with industrial standard.
Widthwise modulus of rupture (MPa) ≥ 14 ≥10 ≥11 11.40 15.74 8.95 13.16 14.35 14.45 5.85 9.74 7.71 11.05 16.01 16.03 20.76 14.13 21.79 16.15 19.44 22.29 7.94 5.95 6.36 10.45 9.93 8.03 4.42 5.07 4.93 7.64 10.15 8.25

Lengthwise modulus of rupture (MPa) ≥ 14 ≥ 24 ≥ 22 40.69 49.49 45.19 47.25 53.54 73.61 29.46 29.17 26.92 51.10 41.54 40.44 39.73 50.19 38.94 50.93 60.44 62.43 21.79 16.60 26.38 39.34 38.17 31.91 20.51 13.87 21.89 18.61 25.06 26.67

Water absorption (%) - - - 41.80 23.89 26.38 6.02 5.31 3.29 35.39 29.44 27.64 5.40 11.59 13.06 37.92 55.17 28.82 6.88 6.26 5.09 41.69 33.08 31.35 12.47 14.15 9.52 41.77 45.15 32.35 14.44 10.33 11.78

Thickness swelling (%) < 12 < 25 < 20 27.55 9.45 8.11 1.74 1.74 1.04 42.84 23.92 21.90 2.25 2.45 2.00 29.14 31.08 7.44 3.38 2.48 2.08 33.56 25.29 22.96 2.63 4.21 2.88 48.40 50.77 30.36 3.59 2.84 3.61

Moisture content (%) 4 - 13 5 - 13 2 - 12 6.77 6.57 6.64 8.67 7.87 7.74 7.19 7.36 7.05 9.00 4.84 5.04 6.57 5.93 5.75 8.01 7.90 7.86 7.19 7.53 7.38 7.82 7.75 7.60 8.50 8.86 8.36 8.88 7.91 8.43

Density (kg./m 3 .) 400 - 900 400 - 900 - 713.79 750.46 676.56 694.54 700.86 686.38 667.01 666.99 741.03 686.80 723.44 729.61 687.20 693.33 675.87 684.48 705.97 696.81 728.25 690.24 728.29 721.21 739.61 704.97 687.77 717.39 778.80 719.33 757.58 718.85

Thickness (mm.) 10 ± 0.3 10 ± 1.0 10 ± 0.8 9.70 9.59 9.48 9.67 9.61 9.54 9.78 9.49 9.46 9.60 9.38 9.38 9.57 9.67 9.66 10.28 9.80 9.79 9.75 9.51 9.47 9.58 9.55 9.53 9.44 9.39 9.39 9.40 9.41 9.48

Glue content (%) 5 7 9 5 7 9 5 7 9 5 7 9 5 7 9 5 7 9 5 7 9 5 7 9 5 7 9 5 7 9

Type of fruit trees TISI 876-2547 JIS A 5908-2003 (24-10 type, E 2 type) BS EN 300-1997 (OSB/2) PRF Mango pMDI PRF Rambutan pMDI PRF Durian pMDI PRF Litchi pMDI PRF Longan pMDI