GB/T 40302-2021Plastics - Determination of burning behaviour of thin flexible vertical specimens in contact with a small-flame ignition source (English PDF)
塑料 立式软薄试样与小火焰源接触的燃烧性能测定
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Issued by
State Administration for Market Regulation, China National Standardization Administration
Level / Type
National · Recommended
Issue date
August 20, 2021
Implementation date
March 1, 2022
Scope
GB/T 40302-2021 is the English-translated version of 塑料 立式软薄试样与小火焰源接触的燃烧性能测定.
GB/T 40302-2021 is the Chinese standard "Plastics - Determination of burning behaviour of thin flexible vertical specimens in contact with a small-flame ignition source".
Its scope clause reads: This document specifies a small-scale screening procedure in the laboratory for comparing vertical soft and thin plastic specimens exposed to low-energy ignition sources Relative combustion performance under the.
It is suitable for testing by ISO 1210 method B due to distortion or shrinkage during ignition Sample. The provisions of this document apply to the method for measuring the afterglow and afterglow time of the sample.
The classification described in Appendix A can be used for quality control or pre-selection of product raw materials. The classification determined by this test method is only applicable The material used in the measurement of the sample.
Note. The test results are affected by the material components, such as the concentration of pigments, fillers, and flame retardants. Its clauses include terms and definitions.
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Document preview — GB/T 40302-2021
National Standard of the People's Republic of China
- Classification
- G 31
Issued by: State Administration for Market Regulation, China National Standardization Administration
Contents
- Foreword
- 1 Scope
- 2 Normative references
1 Scope
1.1
This document specifies a small-scale screening procedure in the laboratory for comparing vertical soft and thin plastic specimens exposed to low-energy ignition sources
Relative combustion performance under the. It is suitable for testing by ISO 1210 method B due to distortion or shrinkage during ignition
Sample.
1.2
The provisions of this document apply to the method for measuring the afterglow and afterglow time of the sample.
1.3
The classification described in Appendix A can be used for quality control or pre-selection of product raw materials. The classification determined by this test method is only applicable
The material used in the measurement of the sample.
Note. The test results are affected by the material components, such as the concentration of pigments, fillers, and flame retardants.
2 Normative references
The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations
Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
This document.
GB/T 6379.2-2004 Measurement methods and accuracy of results (accuracy and precision) Part 2.Determine standard measurement methods
The basic method of method repeatability and reproducibility (ISO 5725-2.1994, IDT)
ISO 291.2008 Plastic Specimen Condition Adjustment and Test Standard Environment (Plastics-Standardatmospheresforcondi- tioningandtesting)
ISO 1043-1.2001 Plastic symbols and abbreviations Part 1.Basic polymers and their characteristic properties (Plastics-
Symbolsandabbreviatedterms-Part 1.Basicpolymersandtheirspecialcharacteristics)
ISO 1210 Plastics determine the combustion behavior of horizontal and vertical samples in contact with a small flame (50W) ignition source [Plastics-Deter- minationoftheburningbehaviourofhorizontalandverticalspecimensincontactwithasmal-flame (50W)ignitionsource]
ISO 10093 Plastics-Firetests-Standardignitionsources
ASTMD5207-91 Standard Practice for Flame Calibration of 20mm and 125mm Tests for Small-scale Combustion Testing of Plastic Materials (Standardpracticeforthecalibrationof20mmand125mmtestflamesforsmal-scaleburningtests onplasticmaterials)
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Afterflame
Under the specified test conditions, after removing the ignition source, the continuous flame of the material. […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.
Referenced standards
Normative references
ISO 5725 · ISO 291.2008 · ISO 1043 · ISO 1210 · ISO 10093
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