UL94 Horizontally & Vertically Burning Test Apparatus For Plastic

What is UL94 Horizontally & Vertically Burning Test Apparatus For Plastic？

The Horizontal and Vertical Burning Test Set is designed to evaluate the burning behavior of plastic materials in fire conditions, and it simulates various burning situations that occur in an actual fire.. 

Device Structure:

1. Horizontal Burning Test Apparatus (HBTA): is used to test the combustion of plastic samples by placing them in a horizontal position. Usually includes a combustion chamber and ignition system.

   
   

2. Vertical Burning Test Apparatus : Used for placing plastic samples in vertical position for burning test. Typically consists of a combustion chamber, ignition system and sample holder.

Test Method:

1. Horizontal Burning Test: Plastic samples are placed in a horizontal position, ignited by the ignition system, and parameters of the burning process, such as burning rate and duration, are recorded.

   
   

2. Vertical Burning Test: Plastic samples are placed in a vertical position, ignited by an ignition system, and the parameters of the burning process, such as flame extension length and burning performance, are recorded.

Test Parameters:

• Burning Rate: The burning rate of the plastic sample during the combustion process, usually expressed in terms of the surface area burned per unit time.

  
  

• Flame Spread Length : The flame propagation performance of the material is evaluated based on the maximum length of flame extension from the surface of the plastic sample.

  
  

Please find below the detailed testing method for Horizontally & Vertically Burning Test Apparatus For Plastic

1. Scope of application:

It is mainly used to measure the combustion performance of plastic or plastic parts and non-metallic materials under the condition of 50W flame, burning horizontally or vertically and to determine the plastic combustion level.

2. Compliant standards：

Comply with HB horizontal burning test of UL 94-2012; ASTM D635; V-0 V-1 V-2 vertical burning test of UL 94-2012; ASTM D3801; IEC 60695-11-10 standard requirements.

3. Main performance parameters:

3.1 Combustion box:

3.1.1 Box: volume ≥ 0.5m³, it’s processed and formed by CNC machine tools, and the arc shape is beautiful and generous.

3.1.2 The top of the box is equipped with a strong extraction system, which discharges the exhaust gas to the outdoors when the test is completed. During the test, the system was stopped.

3.2 Burning torch:

3.2.1 The Bunsen burning power of this torch is 50W, which fully meets the requirements of ASTM D5207.

3.2.2 The inner diameter of the crater: Ф9.5±0.1mm. Steam outlet: Ф0.9±0.03mm. The height of the nozzle from the air inlet is 100±10mm. It meets the requirements of ASTM D5025.

3.2.3 Torch angle: horizontal is 90 degrees. Vertical is 45 degrees.

3.2.4 Flame height: 15mm~45mm, it can be adjusted arbitrarily.