GB National Standards for Flame Retardant Fabrics
Tag:
National Standard Vertical Combustion Oxygen Index Test Method for Flame Retardant Fabrics
1. GB2408-80 Horizontal Combustion Test Method
The horizontal test method is to test the horizontal self-support of the sample under laboratory conditions. Combustion performance.
2. GB2409-84 vertical combustion method
The vertical combustion method is specified in It is a method of classifying the combustion of vertically placed specimens with certain specifications under the action of flame.
3. GB2406-80 Oxygen Index Test Method
Oxygen Index (OI) ——Refers to the lower oxygen content in the required mixed gas when plastics are burned. The average concentration of oxygen in the air is 21%. Generally, an oxygen index below 21 is a flammable plastic, between 22 and 27 is a self-extinguishing plastic, and above 27 is a flame retardant plastic. This method is relatively simple, has good digital reproducibility, and has the characteristics of numerically expressing the combustion performance of materials, so it is commonly used abroad (for example, the oxygen index test standard in the United States is ANST/ASTM D2863-1977). This method is not only suitable for self-supporting materials, but also for films, foam plastics, etc.
4. GB8323-87 Smoke Density Test Method
This test method is Determine the specific optical density produced when a material is irradiated or burned under specified test conditions. The specific optical density is the specific optical density value calculated based on the specified test chamber volume, optical path length, and light transmittance measured by the test area. The larger optical density value is used to represent the optical density of the material.
：City
AAERT5Y4375JTY
Disclaimer:
Disclaimer: Some of the texts, pictures, audios, and videos of some articles published on this site are from the Internet and do not represent the views of this site. The copyrights belong to the original authors. If you find that the information reproduced on this website infringes upon your rights, please contact us and we will change or delete it as soon as possible.
AA
