Detail of GB/T 17657-1999

Introduction of GB/T 17657-1999

1 Scope This standard specifies the test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels. This standard is applicable to the determination of the properties of various wood-based panels and surface decorated wood-based panels. 2 Normative References The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, all editions indicated are valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the latest edition of the standards indicated below.

Contents of GB/T 17657-1999

Contents Foreword I 1 Scope 2 Normative References 3 Definitions 4 Test Methods 4.1 Measurement of Dimensions of Test Pieces 4.2 Density Determination 4.3 Determination of Moisture Content 4.4 Determination of Expansion Ratio of Limiting Volume 4.5 Determination of Thickness Expansion Ratio after Water Absorbing 4.6 Determination of 24h Water Absorption 4.7 Determination of Ultimate Water Absorption 4.8 Determination of Internal Bond Strength 4.9 Determination of Static Bending Strength and Elastic Modulus 4.10 Determination of Screw Holding Capability 4.11 Determination of Formaldehyde Emission with Perforator Method 4.12 Determination of Formaldehyde Emission with Dryer Method 4.13 Determination of Surface Bonding Strength 4.14 Determination of Surface Bonding Strength 4.15 Determination of Bonding Strength 4.16 Determination of Glueline Shear Strength 4.17 Determination of Immersing and Stripping Properties 4.18 Determination of High Temperature Resistance Property 4.19 Determination of Impact Toughness Property 4.20 Determination of Low Temperature Impact Toughness Property 4.21 Determination of Surface Property Resistant to Water Vapour Resistance 4.22 Determination of Longitudinal Compressing Strength 4.23 Hardness Determination 4.24 Determination of Surface Absorption Property 4.25 Determination of Wet Cycle Property 4.26 Determination of Static Bending Strength after Boiling (Immersion)-Freezing-Drying Treatment 4.27 Determination of Accelerated Ageing Property of Outdoor Wood-based Panels 4.28 Determination of Sand Content 4.29 Determination of Surface Scratching Resistant Property 4.30 Determination of Surface Cracking Resistant Property 4.31 Determination of Surface High/Low Temperature Cycling Resistant Property-Method 4.32 Determination of Surface High/Low Temperature Cycling Resistant Property-Method 4.33 Determination of Colour Stabilization Property 4.34 Determination of Dimensional Stability-Method 4.35 Determination of Dimensional Stability-Method 4.36 Determination of Surface Anti-pollution Properties-Method 4.37 Determination of Surface Anti-pollution Properties-Method 4.38 Determination of Surface Wear Resistant Properties 4.39 Determination of Tensile Strength 4.40 Determination of Surface Properties Resistant to Cigarette Burning 4.41 Determination of Flame Retarding Properties 4.42 Determination of Surface Properties Resistant to Dry Heat 4.43 Determination of Properties Resistant to Boiling Water 4.44 Determination of Properties Resistant to Impact 4.45 Determination of Ageing Resistance 4.46 Determination of Properties Resistant to Cracking 4.47 Determination of Properties of Post Forming 4.48 Determination of Anti-static Properties Appendix A (Informative) Wood Failure Rate Diagram for Plywood Test Piece Appendix B (Informative) Abnormal Failure Diagram for Plywood Test Piece