Test national standard requirements for fabric vertical combustion test

Textile vertical combustion test preparation: textile combustion performance test vertical method, experimental conditions, and experimental preparation.

First, the application range
GB / T 5455 specifies the test method for determining the flame retardancy of various flame retardant textiles, using to determine textile renewal, flammable And the tendency of carbonization.
GB / T 5455 is suitable for flame retardant properties such as flame retardant, knitted fabrics, coating products, laminated products and other flame retardant properties.

Second, the test principle Put a certain size of the sample to ignite under a predetermined burner, and the measurement is specified for ignition time, the samples of the sample, yin Burning time and damage length.

Third, the reference standard

GB 6 529 -86 Standard atmosphere of wetting and testing of textile

Fourth, sample requirements
1. The sample should be taken from the distance of 1/10 width of the distance bar. The sample size is 300 mm x 80 mm, and the long side is to be parallel to the fabric (longitudinal) or the weft (lateral). 2. Each sample, award and weft (longitudinal direction and lateral) each take five samples, the (longitudinal) sample cannot be taken from the same warp yarn, the weft (lateral) sample cannot be taken from the same weft yarn. 3. The sample should be stipulated in GB 6529, in the secondary standard atmosphere, ie 20 ° C 2 # 39; C, relative humidity is 65% 3%, and the sample is placed 8-24 h at the thickness of the sample. Until the balance, then take out In the sealed container, it can also be processed according to the conditions agreed by various aspects. The arbitration test should be placed 24 h,


5. Test results and analysis

1. The ever-intensive time, the annulus time, and the length of the damage length of the five samples are calculated separately, respectively. 2. Samples of drops caused by extinction cotton during the recording of the burning process. 3. For some samples, several samples may be burned, record the measured values of the endlessness of the unburned sample, the length of the die, and the damage length of the damage, indicate several samples in the test report. Burning.
4. Samples that are melted together in combustion should be measured at the highest point of melting when measuring the length of the damage.

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