Detail of GB/T 17657-2013

Introduction of GB/T 17657-2013

1 Scope This standard specifies the methods for testing the physical and chemical properties of wood-based panels and surface decorated wood-based panels. This standard is applicable to wood-based panels and surface decorated wood-based panels, and their products. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 250-2008 Textiles - Tests for Colour Fastness - Grey Scale for Assessing Change in Colour GB/T 601-2002 Chemical Reagent - Preparations of Standard Volumetric Solutions GB/T 730-2008 Textiles-Tests for Colour Fastness - Quality Control of Blue Wool Reference Materials 1 to 7 GB 845 Cross Recessed Pan Head Screws GB 846 Cross Recessed Countersunk Head Tapping Screws GB/T 2406.1 Plastics - Determination of Burning Behavior by Oxygen Index - Part 1: Guidance GB/T 2406.2 Plastics - Determination of Burning Behavior by Oxygen Index - Part 2: Ambient-temperature Test GB/T 2408 Plastics - Determination of Burning Characteristics - Horizontal and Vertical Test GB/T 3190-2008 Wrought Aluminium and Aluminium Alloy - Chemical Composition GB/T 3977 Specification of Colors GB/T 3978-2008 Standard Illuminants and Geometric Conditions GB/T 7921 Uniform Color Space and Color Difference Formula GB/T 9286-1998 Paints and Varnishes - Cross Cut Test for Films GB/T 9761-2008 Paints and Varnishes - Visual Comparison of the Colour of Paints LY/T 1612 The Climate Chamber for Determination of Formaldehyde Emission JB/T 3889-2006 Coated Abrasives-Abrasive Cloth 3 Terms and Definitions For the purposes of this document, the following terms and definitions apply. 3.1 Wood-based panels Sheeting or formed products that are made by assembling and bonding the various material units, processed mainly from timber or non-timber plant fibers, with/without adhesive and other additives, mainly including plywood, shaving board, fibre board and their surface-decorated panels. [GB/T 18259-2009, Definition 2.1.1]. 3.2 Decorated wood-based panels Panels finished or surface-decorated with various decorative materials, with wood-based panels as the base material. 4 Test Methods 4.1 Measurement of Dimensions of Specimens 4.1.1 Apparatus 4.1.1.1 Micrometer, or similar measuring tool, 6.0 mm~20.0 mm in measuring head diameter, 0.01 mm in division value, and allowing measuring range to be selected upon the specimen thickness. 4.1.1.2 Vernier caliper: 0.1 mm in division value and allowing measuring range to be selected upon the specimen length. 4.1.2 Method 4.1.2.1 Measuring point The number of and positions of measuring points are as specified in the standards of relevant test methods. 4.1.2.2 Thickness measurement For thickness measurement, get the measuring surface of micrometer slowly stuck on and closely contact the specimen (the pressure applied is about 0.02 MPa~0.05 MPa). The diameter of the measuring head shall be selected according to the panel type; in principle, panels of low density and rough surface shall be measured with measuring head in large diameter. 4.1.2.3 Measurement of length and width For length and width measurement, the vernier caliper shall be slowly clipped on the specimen, and the included angle between the caliper and the specimen surface shall be about 45°, see Figure 1.

Contents of GB/T 17657-2013

Foreword i 1 Scope 2 Normative References 3 Terms and Definitions 4 Test Methods 4.1 Measurement of Dimensions of Specimens 4.2 Density Measurement 4.3 Determination of Moisture Content 4.4 Determination of Thickness Swelling Rate of Water Absorption - Method 4.5 Determination of Thickness Swelling Rate of Water Absorption - Method 4.6 Determination of 24h Water Absorption 4.7 Determination of Static Bending Strength and Elastic Modulus (Three-Point Bending) 4.8 Determination of Static Bending Strength and Elastic Modulus (Four-Point Bending) 4.9 Determination of Static Bending Strength after Water Immersion at 70℃ and 100℃ 4.10 Determination of Static Bending Strength after Boiling (Immersion) - Freezing - Drying Process 4.11 Determination of Internal Bonding (Bond) Strength 4.12 Determination of Internal Bonding (Bond) Strength after Boiling for 2 h 4.13 Determination of Humidity Resistance - Water Boiling Test 4.14 Determination of Humidity Resistance - Cyclic Test 4.15 Determination of Surface Bonding Strength - Method 4.16 Determination of Surface Bonding Strength - Method 4.17 Determination of Bonding Strength 4.18 Determination of Glueline Shear Strength 4.19 Determination of Stripping Property 4.20 Determination of Resistance to Stripping Force 4.21 Determination of Screw Holding Capability 4.22 Determination of Impact Toughness Property 4.23 Determination of Low Temperature Impact Toughness Property 4.24 Determination of Tensile Strength 4.25 Determination of Compressive Strength Parallel to Grain 4.26 Determination of Accelerated Aging Property 4.27 Determination of Sand Content 4.28 Determination of Surface Absorption Property 4.29 Determination of High Temperature Resistance Property 4.30 Determination of Color Fastness to Light 4.31 Determination of Color Stabilization Property 4.32 Determination of Color Difference 4.33 Determination of Dimensional Stability - Method 4.34 Determination of Dimensional Stability - Method 4.35 Determination of Surface Resistance to Water Vapor 4.36 Determination of Surface Resistance to Crazing 4.37 Determination of Surface Resistance to Alteration of Hot and Cold - Method 4.38 Determination of Surface Resistance to Alteration of Hot and Cold - Method 4.39 Determination of Surface Resistance to Scratching 4.40 Determination of Surface Resistance to Stain – Method 4.41 Determination of Surface Resistance to Stain - Method 4.42 Determination of Surface Resistance to Abrasion - Method 4.43 Determination of Surface Resistance to Abrasion - Method 4.44 Determination of Surface Resistance to Abrasion - Method 4.45 Determination of Surface Resistance to Cigarette Burn 4.46 Determination of Surface Resistance to Dry Heat - Method 4.47 Determination of Surface Resistance to Dry Heat - Method 4.48 Determination of Surface Resistance to Heat and Humidity - Method 4.49 Determination of Surface Resistance to Heat and Humidity - Method 4.50 Determination of Surface Resistance to Boiling Water 4.51 Determination of Impact-resistance Performance 4.52 Crack-resistance Performance Measurement (HPL Panel with Thickness t≤2mm) 4.53 Formability Determination 4.54 Electrostatic Prevention Performance Determination 4.55 Determination of Flame Retarding Property 4.56 Determination of Adhesive Force of Film 4.57 Determination of Hardness of Film 4.58 Determination of Formaldehyde Content - Perforator Method 4.59 Determination of Formaldehyde Emission - Desiccator Method 4.60 Determination of Formaldehyde Emission - 1m3 Climate Box Method 4.61 Determination of Formaldehyde Emission - Gas Analysis Method Appendix A (Informative) Reference International Standards and Foreign Advanced Standards of Test Methods Appendix B (Normative) Figures of Wood Damage Rate of Plywood Specimens Appendix C (Normative) Abnormal Damage Figure of Plywood Specimens Appendix D (Informative) Xenon Arc Lamp Device