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Test procedure of curtain flame retardant tester

Test procedure of curtain flame retardant tester

The curtain flame retardant performance tester is mainly used to test the flame retardant performance of hanging fabrics such as curtains and curtains; it can be applied to single-layer or multi-layer fabrics, but it cannot be used with a gram of more than 700 g/m2 (21 oz/yd2). ) Fabric fabric.



Applicable standards:
 
   National Fire Protection Association (NFPA) NFPA 701: 2004&2009 Edition Test Method 1
 
   Combustion box:
 
   1. Specifications: 675mm wide, 500mm deep, 700mm high.
 
  2. Structure: 12mm thick Marinite mineral board (calcium silicate board), externally wrapped with 1.2 thick 304# stainless steel, the front is an open test box, and the inner surface of the test box must be painted with a layer of smooth black paint.
 
  3. Meet (NFPA) NFPA 701:2004 Chapter 5 requirements.
 
  burner:
 
  Meker burner (Meker Burner) hammer-shaped laboratory burner, can provide heat 10,500 BUT/Hour. Meet (NFPA) NFPA 701: 2004 5.3.3 requirements;
 
   Needle strip for sample installation:
 
   uses a 9mm stainless steel bar, 190mm long, with a steel needle with a diameter of 0.7mm and a length of 11mm
 
   Wire brush:
 
  Bronze manufacturing meets (NFPA) NFPA 701:2004 5.9 requirements
 
  Sample rack:
 
   1. Equipped with 5 stainless steel sample holders
 
   2. Equipped with 1 roll of standard combustion line
 
  Instrument features:
 
   1. Meet (NFPA) NFPA 701: 2004 5.6 requirements;
 
  2. Fully automatic methods: such as trigger timing, automatic opening and cutting off the air source, etc.;
 
  3. Touch method: using a proximity switch, which triggers the start of timing;
 
  4. Air supply system: equipped with pressure reducing valve, solenoid valve, automatic opening and shutting off the air source, in line with (NFPA) NFPA 701: 2004 5.4 requirements;
 
   5. Timer: 0~99.99 seconds can be set arbitrarily, resolution: 0.01 second, precision: 0.1 second;
 
  6. ​​Flowmeter: It is a rotameter. Adjusting it can adjust the intensity of the flame.
 
  experiment procedure:
 
   1. Put the burner torch down and push the burner into the sample. The flame starts to ignite the sample. After 45s, the system cuts off the gas and the blowtorch automatically stops burning.
 
   2. Observe whether the sample starts to burn, if the sample burns, press Timer 1 to count the time, and stop the timing after the sample burns.
 
  3. At the same time, observe whether there are dripping objects. If there are dripping objects burning, press timer 1 to count the time. Stop the timer after the sample burns. The afterburning time is corrected to the long time for the sample and falling objects to burn.

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