WelcomeWebsite! If you have any questions, please call !
Flammability tester,burning tester,Fire Retardant Fabrics Tester_QINSUN




Company:-Qinsun Instruments Co., Ltd.
Tell:+86-21-6780 0179
Address:No.2578 Minhang District Gu Dai Road, Shanghai

What is UL 94 test for flammability of plastic materials?

Position: Home > News

What is UL 94 test for flammability of plastic materials?

Author: Date :2023-09-08 Views: order

UL 94 is a widely recognized standard developed by Underwriters Laboratories (UL) to assess the flammability characteristics of plastic materials. This test is used to evaluate the ability of plastic materials to resist ignition and their performance during and after exposure to flame.

The UL 94 test classifies plastics into different flammability ratings, including V-0, V-1, V-2, HB, 5VA, and 5VB. These ratings indicate the materials' relative resistance to ignition and their ability to self-extinguish after the ignition source is removed.

The UL 94 test procedure involves subjecting the plastic material to various testing conditions, including:

1. Vertical Burning Test: In this test, a vertically oriented specimen is exposed to a small flame ignition source for a specified duration. The flame application time and any dripping or burning debris are recorded. The test evaluates the material's burning behavior and its ability to self-extinguish.

2. Horizontal Burning Test: Here, the test specimen is placed horizontally and exposed to a horizontal flame source. Similarly, the flame application time, dripping, and burning behavior are observed. The horizontal burning test assesses the material's burning behavior in a different orientation.

Additional criteria, such as after-flame time, after-glow time, and the presence of flaming particles or droplets, are also considered in determining the material's classification.

The UL 94 test for flammability helps to identify the suitability of plastic materials for specific applications, especially those requiring enhanced fire safety. It provides valuable information for designers, manufacturers, and regulatory bodies to select and use appropriate materials based on their flammability characteristics and safety requirements.

Phone:+86-17740808215 Tell:+86-21-6780 0179 Address:No.2578 Minhang District Gu Dai Road, Shanghai Email:info@qinsun-lab.com sitemap