GB/T 18958-2022Hardly flammable medium density fiberboard (English PDF)

Foreword

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

The combustion performance grades and requirements of flame-retardant MDF specified in this document are based on GB 8624-2012 "Building Materials and Manufacturing In terms of technical content, it is equivalent to the corresponding grade and requirements of this standard. Meet the general technical requirements The technical requirements of GB/T 11718-2021 "Medium Density Fiberboard".

This document replaces GB/T 18958-2013 "Flame Retardant Medium Density Fiberboard". Compared with GB/T 18958-2013, except for structural adjustment and Apart from editorial changes, the main technical changes are as follows.

a) Changed the classification of flame-retardant medium density fiberboard according to its combustion performance;

Classification according to the level of burning droplets/particles and the applicable conditions of the board (see Chapter 4, Chapter 5 of the 2013 edition);

b) Added technical requirements for flame-retardant architectural MDF (see 5.3);

c) Sampling methods for samples and test pieces have been added (see Chapter 6);

d) Changed the marking method of flame-retardant MDF (see Chapter 8, Chapter 9 of the 2013 edition);

1 Scope

This document specifies the classification and code, requirements, inspection rules, marking, packaging, transportation and storage requirements of flame-retardant MDF, and describes The method of measurement and test for flame retardant MDF.

This document applies to flame retardant MDF.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 2828.1-2012 Counting sampling inspection procedure Part 1: Batch-by-batch inspection sampling retrieved by acceptance quality limit (AQL) plan

GB/T 5907.1-2014 Firefighting Vocabulary Part 1: General Terms

GB 8624-2012 Classification of combustion behavior of building materials and products

GB/T 8626-2007 Test methods for flammability of building materials

GB/T 11718-2021 medium density fiberboard

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

GB/T 18259-2018 Wood-based panels and their surface decoration terms

GB 18580-2017 Limits of formaldehyde release in wood-based panels and their products for interior decoration and refurbishment

GB/T 19367 Dimensional determination of wood-based panels

GB/T 20284-2006 Single combustion test of building materials or products

GB/T 20285-2006 Material smoke toxicity hazard classification

GB/T 39600-2021 Formaldehyde emission classification of wood-based panels and their products

3 Terms and Definitions

GB/T 5907.1-2014, GB 8624-2012, GB/T 8626-2007, GB/T 11718-2021, GB/T 18259-2018 and GB/T 20284-2006 and the following terms and definitions apply to this document.