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The horizontal burning method refers to a test method in which one end of a material sample is clamped horizontally, the free end is exposed to the flame of a specified gas, and the linear burning rate is measured to evaluate the combustion performance. Equipped with advanced equipment and professional material chemists, Alfa Chemistry can provide you with horizontal burning test services, including the samples you send to be tested or the samples of flame retardant materials developed in cooperation with us.
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Test range
The horizontal burn test is suitable for plastics, foams, films, textiles, coatings, rubber and other products.
Test standard
UL94 horizontal flammability test for classified materials HB
Test preprocessing
Two sets of three specimens with nominal dimensions of 125 mm x 13 mm and thickness not exceeding 13 mm.
Condition at 23±2 °C, 50±5% RH for at least 48h.
Test method
The 20mm flame is inclined at 45 degrees, and the flame is quickly removed by contacting the test material for 30 seconds or less than 30 seconds with a 1-inch length of combustion. Then, start timing from when it exceeds 25mm, and calculate the burning speed.
HB flame rating
Experienced team of materials chemists
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Reliable quality and standards
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Comprehensive and systematic testing and analysis services
In the analysis and research of flame retardant properties, the horizontal burning test is a commonly used one. Feng Yang et al. studied the effect of nanofiller types (nano-silica and attapulgite) on the flammability of nanocomposites through horizontal burning test and other methods. As shown in the figure below, nanofillers have a significant effect on the flammability of nanocomposites.
Flammability of PS PNCs [1]
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