GB/T 14645-2014 in English

《GB/T 14645-2014纺织品 燃烧性能 45°方向损毁面积和接焰次数的测定》由TC209（全国纺织品标准化技术委员会）归口，TC209SC1（全国纺织品标准化技术委员会基础标准分会）执行，主管部门为中国纺织工业联合会。
本标准规定了45°方向纺织品采用表面点火和底边点火测定燃烧性能的两种方法。
本标准 A 法适用于各类织物及其制品(A 法点不着的厚型纺织品的测定参见附录 A);B法适用于受热熔融的纱线和织物。

Textiles - Burning behavior - 45° test determination of damaged area and ignition times

1 Scope

This standard specifies two methods for determining the burning behavior of textiles at 45° using surface ignition and bottom edge ignition.

The method A of this standard is applicable to all kinds of fabrics and their products (see Annex A for the determination of thick textiles that cannot be ignited by Method A); Method B is applicable to yarns and fabrics that can be melted by heat.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 6529 Textiles - Standard atmospheres for conditioning and testing

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

3.1
afterflame time
continuous flame burning time of material after the ignition source is removed under the specified test conditions, expressed in seconds

[GB/T 3291.3-1997, definition 2.145]

3.2
afterglow time
after the ignition source is removed, continuous flameless burning time of the material when the flame burning is terminated or of the flameless burning material under the specified test conditions, expressed in seconds

[GB/T 3291.3-1997, definition 2.146]

3.3
damaged length
maximum length of the damaged part of the material in the specified direction under the specified test conditions, expressed in cm

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Health and safety of test personnel
6 Equipment and materials
7 Specimen preparation
8 Test conditions
9 Test procedures
10 Result calculation
11 Test report
Annex A (Informative) Determination of burning behavior of thick textiles - 45° method