GB/T 29418-2023Test methods for properties of wood-plastic composite profile (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

This document replaces GB/T 29418-2012 "Testing of physical and mechanical properties of plastic-wood composite products" and is consistent with GB/T 29418-2012 In addition to structural adjustments and editorial changes, the main technical changes are as follows:

a) Added the term "wood-plastic composite extruded profiles" and its definition (see 3.1);

b) Delete the terms "wood plastic composite material", "new material", "recycled material", "width" and "thickness" and their definitions (see 3.1~ of the 2012 edition 3.5);

c) Added test methods for specification dimensions and straightness deviation (see 5.1);

d) Added test method for mass per meter of length (see 5.2);

e) The bending test has been changed (see 5.3, Appendix A, 4.4, Appendix A of the 2012 edition);

f) The wear resistance test has been changed and the determination of wear-through of the co-extruded layer has been added (see 5.13, 4.13 of the 2012 edition);

g) Added creep failure test (see 5.15, Appendix G);

h) Added high and low temperature tests (see 5.18, Appendix J);

i) Added boiling water resistance test (see 5.19, Appendix K);

j) Added aging test (see 5.20);

k) Added anti-mildew test (see 5.21);

l) The drop weight impact test has been changed (see Appendix D, 4.9 of the 2012 edition);

m) The creep recovery test has been changed (see Appendix F, Appendix C of the 2012 version).

1 Scope

This document stipulates the sample handling, specifications, dimensions and linear deviation, quality per meter of length, bending and compression of plastic-wood composite extruded profiles.

Shrinkage, shear strength, density, drop weight impact, nail holding force, moisture content, water absorption, water absorption thickness expansion rate, anti-slip value, wear resistance, creep recovery, creep Test methods for variable damage, linear thermal expansion coefficient, freeze-thaw, high and low temperature, boiling water resistance, aging and mildew resistance.

This document applies to wood-plastic composite extrusion products, including surface co-extruded profile products. Products using other molding methods can also be referred to. use.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 1033.1-2008 Determination of density of plastic non-foam plastics Part 1: Dip method, liquid pycnometer method and titration method

GB/T 1927.21-2022 Test methods for physical and mechanical properties of small defect-free wood specimens - Part 21: Determination of nail holding force

GB/T 2035 Plastic terms and their definitions

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

GB/T 14019 Wood anticorrosion terminology

GB/T 14153-1993 General rules for drop weight impact test methods for rigid plastics

GB/T 15036.2-2018 Solid wood flooring Part 2: Inspection methods

GB/T 17657-2022 Test methods for physical and chemical properties of artificial panels and decorative artificial panels

GB/T 24508-2020 Wood plastic flooring

GB/T 29365-2012 Test method for artificial climate aging of plastic-wood composite materials

GB/T 35469-2017 Test method for mildew resistance of building wood-plastic composite materials

JB/T 9389-2008 Technical specifications for drop hammer impact testing machine for non-metallic materials

JC/T 2222 Wood plastic composite material terminology

3 Terms and definitions

The terms and definitions defined in GB/T 2035, GB/T 14019, JC/T 2222 and the following apply to this document.