ASTM D2843 is plastic tobacco Dean test criteria
1, ASTM D2843 This section specifies the samples with samples that are compatible with a component of no more than 25mm in composite materials or thickness, and vertically placed in a closed heat radiation source with a prescribed level of thermal radiation source. In the cabinet. In the case of using or not igniting the flame, measure the method of generating smoke from the exposure. This test method is suitable for all plastic. It can also be applied to the evaluation of other materials (such as rubber, textile covers, paint surfaces, wood and other materials).
2. It should be noted that the light density value of the smoke measured by this test method is measured by the sample or composition under the specified shape and size conditions. Inherent basic performance.
3, Tobacco density test box Tests are mainly used for fire safety engineering for research and development, buildings, trains, ships, etc. As the basis or purpose of the construction level assessment. No prediction is provided to have a basis for smoking density to generate the density of smoke in the heat source or flame under other (actual) combustion conditions, nor does it establish any connection with data obtained from other test methods. The steps of this test exclude the impact of stimulus on the eyes. >
Note: The steps of this test are discussed by the decline in vision caused by the degree of smoke, and the degree of smoke is usually unrelated to the piercing slightly. As explained in part 1 of this standard.
4. What needs to be emphasized is that the smoke generated by the material varies according to the radiation illumination exposed by the sample. Therefore, when using the results of this method, it should be confirmed that the sample is exposed to the radiation illumination of 25kW/m² or 50kW/m².
1. Product introduction: > AOTSI-NBS
Tobacco density test box Also known as the smoke density test box, the test method comes from NIST (predecessor of NBS) of the National Standard and Technology Research Institute. Application, this test method can be used to detect the level of smoke levels of plastic products, rail transit non -metal materials, ship non -metal materials, wire and cable products, etc. 5659-2 and the NES 711 tobacco density test method in the military standard; this test standard is compared to the previous building materialsThe method of smoke density tester has more accurate test results. At the same time, optical sensors use more precise photoelectric multiplier pipes, which can capture the subtle flue gas content changes in the box;The toxic test of aviation standards is performed, and the FTir Fourier infrared transformation device is connected to complete the qualitative and quantitative analysis of the smoke content. >2. Meet the standard:
> ISO International Standardization Organization: ISO 5659-2: 2012
EN European Standard: CSN EN 45545-2+A1: 2015
IMO International Maritime Organization: IMO FTPC Part 2
GB China Standard: IOS 8323: 2008
NES UKNaval Engineering: NES 711
NFPA American Fire Association: NFPA 258