GB/T 2406.2-2009
Plastics.Determination of burning behaviour by oxygen index.Part 2:Ambient-temperature test (English Version)

Standard No.

GB/T 2406.2-2009

Language

Chinese, Available in English version

Release Date

2009

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 2406.2-2009

Scope

This part of GB/T 2406 describes the determination method of the minimum oxygen concentration required to just maintain the combustion of the sample in the mixed flow of oxygen and nitrogen under the specified test conditions, and the result is defined as the oxygen index. This section applies to strip or sheet materials whose thickness is less than 10.5 mm and can stand upright and self-supporting. Also suitable for homogeneous solid materials, laminates or foams with an apparent density greater than 100 kg/m³ and certain foams with an apparent density less than 100 kg/m³. It also provides test methods for sheet materials or films that can be supported upright. For comparison, this section also provides a method for determining whether the oxygen index of a certain material is higher than a given value. The oxygen index value obtained by this method can provide a sensitivity scale of the combustion characteristics of materials under certain controlled laboratory conditions, and can be used for quality control. The results obtained depend on the shape, orientation and insulation of the specimen and the ignition conditions. For special materials or special purposes, different test conditions need to be specified. The results obtained for different thicknesses and different ignition modes are not comparable and do not correlate with combustion behavior under other ignition conditions. The results obtained in this part cannot be used to describe or evaluate the fire hazard presented by a specific material or a specific shape under actual fire conditions, but can only be used as an element to evaluate a certain fire hazard. One of all relevant factors for fire hazard assessment in a particular application.

GB/T 2406.2-2009 Referenced Document

• GB/T 11997-2008 Plastic.Multipurpose test specimens
• GB/T 17037.1-1997 Injection moulding of test specimens of thermoplastic materails--Part 1: General principles and moulding of multipurpose and bar test specimens
• GB/T 17037.3-2003 Plastics--Injection moulding of test specimens of thermoplastic materials--Part 3: Small plates
• GB/T 17037.4-2003 Plastic--Injection moulding of test specimens of thermoplastic materials--Part 4: Determination of moulding shrinkage
• GB/T 2828.1-2003 Sampling procedures for inspection by attributes--Part 1: Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection
• GB/T 5471-2008 Plastic.Compression moulding of test specimens of thermosetting materials
• GB/T 9352-2008 Plastic.Compression moulding of test specimens of thermoplastic materials
• ISO 2818:1994 Plastics - Preparation of test specimens by machining
• ISO 2859-2:1985 Sampling procedures for inspection by attributes; Part 2 : Sampling plans indexed by limiting quality (LQ) for isolated lot inspection
• ISO 294-2:1996 Plastics - Injection moulding of test specimens of thermoplastic materials - Part 2: Small tensile bars
• ISO 294-5:2001 Plastics - Injection moulding of test specimens of thermoplastic materials - Part 5: Preparation of standard specimens for investigating anisotropy

GB/T 2406.2-2009 history

• 2009 GB/T 2406.2-2009 Plastics.Determination of burning behaviour by oxygen index.Part 2:Ambient-temperature test

GB/T 2406.2-2009 -All Parts