GB/T 24508-2020Wood-plastic composite flooring (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces GB/T 24508-2009 "Wood Plastic Flooring". Compared with GB/T 24508-2009, this standard except for editorial changes In addition, the main technical content changes are as follows.

---Modified the definition of wood plastic flooring (see 3.1, 2009 edition 3.1);

---Modified the classification method of wood plastic flooring (see Chapter 4, Chapter 4 of the 2009 edition);

--- Deleted the classification of products with superior appearance and qualified products on the front of the product (see the 2009 editions 5.1 and 5.2);

---Deleting the distortion and warpage indicators, adding flatness inspection methods and requirements (see 5.2 and 6.3, 2009 editions 5.3 and 6.3);

--- Delete the bending failure load index, add the minimum concentrated load inspection method and index (see 5.4 and 6.5.2;.2009 edition 5.5 and 6.5.2);

---Increase static bending strength, elastic modulus inspection methods and indicators (see 5.4 and 6.5.3);

---Modified the density index (see 5.4;.2009 edition 5.5);

---Revised the water absorption index (see 5.4;.2009 edition 5.5);

--- Delete the dimensional change rate index after heating (see the 2009 version 5.5 and 6.5.8);

---Increase linear thermal expansion coefficient inspection methods and indicators (see 5.4 and 6.5.15);

---Add boiling water resistance inspection methods and indicators (see 5.4 and 6.5.17);

---The resistance to cold and heat cycles, freeze-thaw resistance, and aging resistance respectively increase the surface state (see 5.4, 6.5.19, 6.5.20 and 6.5.21);

---Modified the inspection methods and indicators of formaldehyde emission (see 5.4 and 6.5.23;.2009 edition 5.5 and 6.5.21);

--- Delete the volatile inspection methods and inspection indicators, increase the total volatile organic compound (TVOC) release rate (72h) inspection method Method and inspection index (see 5.4 and 6.5.27;.2009 edition 5.5 and 6.5.25);

---The size and number of test pieces for surface contamination and corrosion resistance have been modified (see 6.5.1, 2009 edition 6.5.1);

--- Adjust the inspection method of specifications (except for assembly separation seam and assembly height difference) to GB/T 19367-2009, and combine the surface Strength, surface scratch resistance, and surface abrasion test methods are uniformly adjusted to GB/T 17657-2013 (see 6.3, 6.5.9, 6.5.10 and 6.5.11;.2009 editions 6.3, 6.5.12, 6.5.13 and 6.5.15);

--- Added phthalate inspection methods and indicators (see 5.4 and 6.5.22);

---Added the physical and chemical performance inspection sampling plan and the determination of the inspection results (see 7.3.4).

1 Scope

This standard specifies the terms and definitions, classification, requirements, inspection methods, inspection rules and signs, packaging, transportation, and storage of wood-plastic flooring.

This standard applies to wood plastic flooring.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document.

GB/T 2828.1-2012 Sampling inspection procedures by attributes Part 1: Batch inspection sampling plan retrieved by acceptance quality limit (AQL)

GB/T 8814-2017 Unplasticized polyvinyl chloride (PVC-U) profiles for doors and windows

GB/T 13942.1-2009 Wood Durability Part 1: Laboratory Test Method for Natural Corrosion Resistance

GB/T 15102-2017 Impregnated film paper facing fiberboard and particleboard

GB/T 16422.2-2014 Plastic laboratory light source exposure test method Part 2: Xenon arc lamp

GB/T 17657-2013 Test method for physical and chemical properties of wood-based panels and facing wood-based panels

GB/T 18102-2007 Impregnated paper laminated wood floor

GB 18580-2017 The limit of formaldehyde emission in wood-based panels and products of interior decoration materials

GB 18584-2001 Limits of harmful substances in interior decoration materials and wooden furniture

GB 18586-2001 Limits of harmful substances in PVC floor of interior decoration materials

GB/T 19367-2009 Determination of the size of wood-based panels

GB/T 29418-2012 Plastic-wood composite product physical and mechanical properties test

HJ571-2010 Technical Requirements for Environmental Labeling Products Artificial Panels and Products

HJ2540-2015 Technical Requirements for Environmental Labeling Products Wood Plastic Products

3 Terms and definitions

The following terms and definitions apply to this document.