Experimental methods and precautions for Vertical Flammability Chamber

Vertical Flammability Chamber

Vertical Flammability ChamberTesting Instrument Description

Vertical Flammability Tester is mainly used for the determination of textiles continued burning, smoldering and charred tendency, it is to test the most commonly used flame retardant textiles flame instruments. Applicable to the vertical flame test for textiles. It includes the following two aspects:Children's pajamas for detecting combustion performance or upholstery fabric;

Determination of protective materials such as flame-retardant clothing, flame retardant fabrics, safety nets, safety belts and other flame-retardant properties;

What can Vertical Flammability Chamber do? Instrument can be measured and described materials, or a combination of products under laboratory conditions of heat and combustion resistance, to assess and analyze the materials, products and combinations of fire risk and cause of the fire at the actual situation. Vertical Flammability Chamber is widely used in fire-retardant requirements of textile such as woven, knitted, coated products, laminated products, apparel fabrics, decorative fabrics, tent fabrics, curtains curtain, building materials, decorative fabrics and other materials flame retardant test. Instrument Professional Standards Group, reliable performance, quality assurance, cheap, is the preferred equipment quality inspection agencies, schools, research institutes and manufacturing enterprises of textile research and testing flame retardant properties. Standard Vertical Flammability Chamber applies to the following test standards：CFR 1615/1616 for testing children's sleepwear CA TB117 Upholstered furniture and fabrics suitable for US retardant filler performance test GB / T 5455 Determination of natural resistance of woven, knitted, coated products, laminated products, such as flame retardant properties ASTM D6413 Standard Test Method For Flame Resistance Of Textiles (Vertical Test) Vertical Flammability Chamber Feature Vertical Flammability Tester according to the latest standard design, reasonable design, compact structure, safe operation, the Group is one of the most technologically sophisticated standard products. Control box and combustion chamber split structure design, the effective protection and security of gas supply line; the whole combustion chamber of stainless steel processing, structure, beautiful, durable, while the combustion chamber front of high quality heat-resistant optical glass 3C certification, live dynamic observation test situation. Microcomputer control box controller and integrated LED digital display technology, high degree of automation, easy operation. Vertical Flammability Chamber Instrument characteristics：（1）Electric wire automatic ignition, safe and reliable.（2）Automatic burner control, without manual control you can successfully complete the complex experiment.（3）Quality stainless steel combustion chamber, configure large heat-resistant glass door, ready to observe the somewhat experimental status. （4）Equipped with a high sensitive gas leak alarm, gas leakage automatic alarm, effectively protect the safety of laboratory personnel.Equipment and Materials forVertical Flammability Chamber

Vertical Flammability ChamberCombustion chamber：It is in front of heat and salt spray corrosion resistance of stainless steel material with glass doors upright rectangular combustion chamber，Inside dimensions of 329 mm × 329 mm × 767 mm. Tank top with 16 evenly inside diameter of 12.5mm vent. To prevent the influence of airflow outside the box, from the top of the box office is equipped with a 30mm outer roof, the lower side of the opening box with ventilation holes 6 of the inner diameter of 12.5mm. Tank top with hanging bracket, supports a sample holder, the sample perpendicular to the front door and is located in the folder with the center of the chamber, the bottom of the sample holder is located above the highest point of the igniter nozzle 17mm. Bottom plate covered with heat-resistant and corrosion-resistant material, length and width than the bottom of the small 25mm, a thickness of about 3mm. Also at the center of the box to put a droplet can withstand or other debris plate or screen, the minimum size of 152mm × 152mm × 1.5mm.

Burner: adjust the flame height with needle valve. （1）Burner, an inner diameter of 10mm (0.38in.), Length 76 ± 6mm (3 ± 0.25in.) with Pipe and base combination. Ignition internal diameter of the tube is about 1.5mm (0.06 in.), and the left edge of the burner 3mm (0.12in.) （2）Gas control and connection, electromagnetic energy fully open or fully closed within 0.2s, and start the timer. （3）Metal construction across the flame height measuring device located in the side of the burner tube, igniting tube, pipe distance of about 13mm (0.5in.) and more than burners. Altimeter should have two tines, about 8mm long, mark distance burner tip 19mm and 38mm （4）It can be adjusted so that the sample below the bottom edge of the center located at the burner into the combustion chamber can be moved, and the test Gas control valve system, in order for a feed gas rate to the burner control system, the burner inlet pressure of 17.2 ± 1.7kPa Control components: a power switch, spark ignition switch, ignition start switch, ignition time setting the sample count, continued burning time is calculated, smoldering time meter, air supply indicator, the gas control valve.

Sample holder: It is used to prevent curling and fixed specimens held in the vertical position of the specimen. The specimen is clamped by the two thick 2.0mm, length 422mm, and width 89mm U-shaped stainless steel plate, whose inner frame dimensions of 356mm × 51mm. The sample is fixed to the middle of the second board, on both sides of the clamping clip Gas: Industrial use propane or butane gas.

Laboratory fume hood, where the test is completed.

1. 2. Stainless steel ruler: an accuracy of 1mm
2. Metal hook and weight: weight metal hook and a series of a series of the total load, the weight attached to the hook, the weight hanging on the side of the lower end of the sample after the test for determining char length. Metal hook is made of 1mm metal hook by the coarse, 76mm long steel wires. Wire bent into a 3mm 45, which formed from one end of the hook. Metal hook used for penetrating the fabric. It is Based on the quality of the different selection of fabric weights.

Fabric quality /(g/m2）	Weight quality /g
101 or less	54.5
101～207 or less	113.4
207～338 or less	226.8
338～650 or less	340.2
Above 650	453.6

Operation Precautions of Vertical Flammability Chamber 1. Check before using the power supply voltage whether it meets the device requirements 2. Check carefully before starting the gas pipes and fittings for air leaks, tested to confirm normal operation.

3. 4. Tested in a fume hood, exhaust gases and other combustible gases produced during the test after each test, the replacement of fresh air.
4. 6. At the end of the test, turn off the gas valve, although after burning combustible gases inside, and then turn off the power, confirm the combustion completely extinguished before leaving the runaround. 7. Instrument equipped with a gas alarm device, such as a combustible gas ring, check whether there is leakage phenomenon. After the combustible gas alarm should immediately turn off the power and air supply until troubleshooting and then reboot. 8. The instrument must have a good grounding device. 9. Equipment, gas storage places, as well as to operate to prohibit any fire, extinguished in time after the test samples are still smoldering. And fire extinguisher device.

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