UL94 Horizontal Vertical Burning Tester for Plastics Foam

UL94 Horizontal and Vertical Burning Tester

Introduce

The UL94 Horizontal and Vertical Burning Tester is a precision flammability testing instrument designed for evaluating the fire resistance of materials such as plastics, textiles, and electronics, in compliance with international standards like UL94, IEC 60695, and GB/T 2408. This advanced equipment accurately measures flame spread and combustion characteristics, ensuring reliable results for quality control and product safety certification. Ideal for manufacturers and laboratories, it offers user-friendly operation, high precision, and robust construction, making it an essential tool for industries requiring stringent fire safety testing.

Standard

UL94: Standard for Safety of Flammability of Plastic Materials for Parts in Devices and Appliances, developed by Underwriters Laboratories (UL). It includes tests for horizontal burning (HB) and vertical burning (V-0, V-1, V-2, 5VA, 5VB) to assess the flammability of plastic materials.IEC 60695: International Electrotechnical Commission standard, specifically IEC 60695-11-10 and IEC 60695-11-20, which cover fire hazard testing for materials, including horizontal and vertical burning tests for plastics and other non-metallic materials used in electrical and electronic products.
GB/T 2408: Chinese National Standard (Guobiao) for testing the burning behavior of plastics using horizontal and vertical methods, equivalent to parts of UL94 and IEC 60695 standards, widely used in China for material flammability evaluation.
ASTM D3801: American Society for Testing and Materials standard for measuring the vertical burning properties of solid plastics, aligning with UL94 vertical test requirements.
ASTM D635: ASTM standard for testing the rate of burning and/or extent and time of burning of plastics in a horizontal position, corresponding to UL94 HB testing.
GB/T 5169.16: Chinese National Standard for fire hazard testing, specifically related to the flame test methods for electrotechnical products, aligning with IEC 60695-11-10 for vertical burning tests.

Application

Plastics:

Description: The tester assesses the burning behavior (horizontal and vertical) of plastic materials used in a wide range of industries, determining classifications like UL94 HB, V-0, V-1, V-2, 5VA, or 5VB based on flame spread and extinguishing time.
Representative Products:
Polycarbonate (PC) Sheets: Used in electronic device housings, such as laptop casings or smartphone back panels.
Polypropylene (PP) Components: Found in automotive parts like dashboard panels or battery cases.
ABS (Acrylonitrile Butadiene Styrene) Panels: Common in consumer electronics, such as TV enclosures or keyboard frames.
PVC (Polyvinyl Chloride) Insulation: Used in electrical cable insulation or wire sheathing.
Nylon (Polyamide) Connectors: Found in industrial machinery or automotive wiring harness connectors.

Textiles:

Description: The tester evaluates the flame resistance of woven, non-woven, or coated fabrics, ensuring compliance with fire safety standards for textiles used in various applications.
Representative Products:
Polyester Upholstery Fabric: Used in furniture, such as sofa or chair coverings.
Nylon Carpeting: Common in automotive interiors or commercial flooring.
Cotton-Polyester Blend Curtains: Used in residential or commercial window treatments.
Aramid (e.g., Nomex) Protective Clothing: Found in firefighter gear or industrial safety uniforms.
Acrylic Coated Fabrics: Used in outdoor awnings or tent materials.

Electronics:

Description: The tester examines the flammability of materials used in electronic components and assemblies, ensuring they meet fire safety standards for devices and circuit protection.
Representative Products:
Epoxy Resin Circuit Boards (FR-4): Used in printed circuit boards (PCBs) for computers, smartphones, or industrial controllers.
Silicone Rubber Keypads: Found in remote controls or medical device interfaces.
Polyurethane Foam Insulation: Used in electronic enclosures or battery packs for thermal and fire protection.
Thermoplastic Connectors: Found in USB ports, HDMI connectors, or power adapters.
Glass-Fiber Reinforced Composites: Used in server racks or high-voltage equipment housings.

Main parameter

1. The test chamber volume is greater than 0.75 cubic meters, with a black interior.
2. An extra-large transparent observation window allows for full observation of the sample combustion status.
3. A user-friendly door opening provides easy access to the sample and burner.
4. The burner angle can be easily adjusted to 0, 20, or 45 degrees to meet various standards.
5. A Bunsen burner is provided, complying with ASTM D5025.
6. A panel-mounted timer records test time and other information.
7. A rotameter is provided to adjust the combustion gas flow rate.
8. A high-precision pressure regulating valve is used to adjust the gas pressure required by the standard.
9. A fan-shaped burner complies with ASTM D4986.
10. A top exhaust system removes combustion exhaust gases.
11. An optional burner calibration system is available, complying with ASTM D5207.

Specification