GB/T 25353-2010Test method to determine the flammability and flame propagation characteristics of thermal/acoustic insulation materials (English PDF)

2.1 Flame spread flamepropagation

Visible flame spread along the length of the sample direction most remote.

NOTE. measured from the center of the combustion flame source. After the initial ignition, the flame goes out on all the sample prior to measurement of the distance, and after the test measurements charred

Length is different.

2.2 Noise insulation materials

Thermal barrier and (or) material or material system sound.

Example. Foam and glass fiber coated with a film or other flocculent material.

2.3 Zero zeropoint

The point of contact with the burner flame specimen.

3.1 radiation plate chamber

Radiation plate chamber shown in Figure 1. Radiation plate chamber should be long (1397 ± 3) mm, width (495 ± 3) mm, higher than the sample

710mm ~ 762mm closure device. Side walls, the bottom and top plates should be insulated as fibrous ceramic insulation. Front panel should be set up

There is a non-ventilated, high temperature glass window for observation during the test specimen. Settings window for a door at the specimen level movable

Out of the station. The bottom of the chamber should be sliding steel platform, to ensure that the sample holder is fixed and horizontal position. The test chamber

And a radiant heat source should be built opposite end of the chimney, the exterior dimensions of length (423 ± 3) mm, width (139 ± 3) mm, height (330 ± 3) mm,

Internal dimensions should be longer (395 ± 3) mm, width (114 ± 3) mm. Chimney should extend to the top of the chamber (see Figure 2).

GB/T 14092.2-2023 | GB/T 19608.1-2022 | GB/T 19608.2-2022 | GB/T 20159.3-2026 | GB/T 19608.3-2026 | GB/T 25352-2010 | […]