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horizontal flammability test

test standard:

ul94-2015, 4943.1-2011 gb, 2408-2008 gb/t, 5169.16-2008 gb/t, etc..

scope:

plastic, foam, film, textile, paint, rubber, etc., are not applicable to building materials.

sample size:

length 125±5mm, width 13±0.5mm, thickness 0.025~13mm

test pretreatment:

a set of 3 samples at23±2℃, 50±5%rh adjustment at least 48h

tested condition:

the flame height is 20±1mm, the ignition time is 30±1s, the flame source is tilted 45 degrees, and the sample holder is kept at 45 degrees with the horizontal plane.

hb criteria:

1)not have a burning rate exceeding 40mm per minute over a 75mm span for specimens having a thickness of 3.0~13mm, or

2)not have a burning rate exceeding 75mm per minute over a 75mm span for specimens having a thickness less than 3.0mm, or

3)cease to burn before the 100mm reference mark.

4)a material classified hb in the 3.0 0.2 mm thickness shall automatically be classed hb down to a 1.5 mm minimum thickness without additional testing.

test schematic diagram

case：

typical cases

reference standard:

fuel test for plastic materials for ul94-2015 equipment and appliances.

tested flow：take picture→mark on specimens at 25mm and 100mm→set parameters of instrument→start testing 

tested condition：

level of combustion flame height requirement is 20 ± 1mm, the ignition time is 

30±1s, flame source tilt 45 °, with the level of the sample holder maintained between 45 °.

sample size：127mm×13mm×4.4mm

hb criteria:

1)not have a burning rate exceeding 40mm per minute over a 75mm span for specimens having a thickness of 3.0~13mm, or

2)not have a burning rate exceeding 75mm per minute over a 75mm span for specimens having a thickness less than 3.0mm, or

3)cease to burn before the 100mm reference mark.

4)a material classified hb in the 3.0 0.2 mm thickness shall automatically be classed hb down to a 1.5 mm minimum thickness without additional testing.

test result：

conclusion：the samples comply with ul94-2015 hb.