ASTM D2843 Building Material Flame Retardant Fire Test—-Standard Overview:

Tests made on a material under conditions herein prescribed are of considerable value in comparing the relative smoke obscuration characteristics of plastics.

ASTM D 2843:1999 (2004) e1 Standard Test Method for Density of Smoke from the Burning or Decomposition of plastics:This fire-test-response test method covers a laboratory procedure for measuring and observing the relative amounts of smoke obscuration produced by the burning or decomposition of plastics. It is intended to be used for measuring the smoke-producing characteristics of plastics under controlled conditions of combustion or decomposition.

 Introduction 

ASTM D2842 Specifies the apparatus and methods of test for the assessment of density of smoke from the burning or decomposition of plastics. Smoke density tester can measure the smoke density of burning or decomposition of plastics.​

Techncial parameters 

1.The combustion chamber is made from stainless steel with Teflon coating, to maximize operating life.
2.Provided with two burners to ignite the sample and drip.
3.Smoke Obscuration – measured with an Incandescent lamp system, using photodiodes.
4.Provided with software to judge the testing results.
5.Records ignition and extinguishment time of flames. And the other test results are light transmission (%), Maximum smoke density (MSD) and Smoke density grade (SDR) and so on.

Features

1.The test light source is an incandescent lamp, the photoelectric sensor is a silicon photodiode, the silicon photodiode has a cosine calibration function, and is equipped with a color filter to filter out ultraviolet light and infrared light that are not recognized by the human eye, and has excellent human eye matching degree. ;
2.The main burner is subjected to flame shock at a pressure of 276 KPA, and an auxiliary burner is provided to perform flame impact on the dripping object;
3.The auxiliary burner gas pressure is 138 KPA, and the molten dripping is further burned;
4.The standard test software can not only display the transmittance value per 15s optical path, but also draw the transmittance test curve. After the test is finished, the software can display the SDR smoke density value, that is, the smoke integral value;
5.Through the test software, the test reports of the three sets of test samples can be synthesized to draw a SDR smoke density development curve;
6.The computer software can be used to compare the three sets of test results SDR at the same time, and automatically determine whether the test results can be met;

ASTM D2843 Building Material Flame Retardant Fire Test-Sample Requirements:

25.4mm*25.4mm*6.2mm* 6 PCS

ASTM D2843 Standards for the density test of smoke generated by the burning or decomposition of plastics:

GBT 8627-2007_Test method for smoke density of burning or decomposition of building materials

GB/T 2408-2008 Test method for burning properties of plastics horizontal method and vertical method

EN ISO 1716:2002: Determination of combustion heat value of building materials

GB 8624: Judgment of China’s fire rating of building materials

GB/T 14402:2007 Test method for combustion heat value of building materials

ISO 11925-2:2002 Flammability Test of Building Material Products

GB/T 20284:2006 Single burning test of building materials or products