Flame retardant curtain test method

Textile combustion testing methods vary due to differences in principle, equipment, and purpose. The test results of various test methods are difficult to compare with each other, and the experimental results can only explain the advantages and disadvantages of the combustion performance of the sample to a certain extent. The combustion experiment method is mainly used to test the combustion span (carbonization area and damage length), afterburning time, and smoldering time of the sample.

According to the relative position of the sample and the flame, it can be divided into vertical method, inclined method, and horizontal method. The principle is to vertically place a sample of a certain size in a specified combustion test chamber, ignite it with a specified ignition source for 12 seconds, remove the ignition source, and measure the afterburning time and smoldering time of the sample. After the smoldering stops, measure the damage length using the specified method. This method can be used to determine the flame retardancy of clothing fabrics, decorative fabrics, tent fabrics, etc. The evaluation method for flame retardancy of textiles in China is mainly based on the burning rate of the fabric. Only textile products that meet the standard requirements can be considered flame retardant products.

China has formulated and implemented more than 10 different test method standards, such as GB/T5454-1997 "Textiles - Burning Performance Tests - Oxygen Index Method", GB/T5455-1997 "Textiles - Burning Performance Tests - Vertical Method", and GB/T5456-1997 "Textiles - Burning Performance Tests - Determination of Flame Spread Performance in the Vertical Direction". China mainly adopts GB/T5455-1997 "Vertical Method for Testing the Flammability of Textiles" for testing the flame retardancy of clothing.