The horizontal and vertical combustion tester meets the requirementsDetailed explanation of materials and products in UL94 and GB/T2408-2008 standards

1、 Materials that meet the standards

typical material

High density modified polypropylene (such asMPP power pipe: flame retardant rating up to UL94 V-0, oxygen index ≥ 32%, self extinguishing under open flame, suitable for environments with high fire prevention requirements such as power installation. The material contains flame retardants and UV resistant additives, with a temperature resistance range of -20 ℃ to 90 ℃.

Plastics and rubber: including engineering plastics, foamed plastics, films, etcHorizontal/vertical combustion test under 50W flame conditions, in compliance with V-0, V-1, V-2 level classification.

Non metallic materials, such as textile fabrics and insulation materials, must meet the following requirementsThe combustion rate, residual flame time and other indicators of GB/T2408-2008.

Performance Characteristics

Flame retardancy:UL94 V-0 grade material self extinguishes within 10 seconds without any dripping or ignition phenomenon; V-1/V-2 levels allow for limited combustion time.

Environmental adaptability: some materials have anti-aging and UV resistance characteristics, and are suitable for long-term outdoor use.

2、 Products that meet the standards

Horizontal and Vertical Combustion Tester

Model example:

KS-50C: Supports multiple standards such as UL94 and GB/T2408-2008, suitable for plastic and electronic materials.

CZF-5: Designed specifically for UL94, it integrates PLC control, touch screen operation, and gas leak alarm functions.

Technical Specifications:

Flame power:50W (V-1 level) or 500W (5VA/B level).

Timing accuracy:0.5 seconds, adjustable flame application time (0-999.9 seconds).

Application scenarios

Material research and development: Optimize flame retardant formula, verify the fire resistance of plastics and rubber.

Industry certification: forUL, CE, etc. provide compliance testing data, such as electronic and electrical enclosures, and building materials.

3、 Testing standards and procedures

UL94 and GB/T2408-2008 core requirements

Horizontal combustion（HB level): Measure the combustion rate of a 125mm × 13mm specimen with a metal mesh distance of 10mm from the specimen.

Vertical combustion（V-0/V-1/V-2): Record the residual flame time and whether the dripping material ignites the cotton pad.

Key Operating Points

The sample must be prepared strictly according to the standard size (such as thickness)≤13mm）。

The test chamber needs to be sealed and equipped with an exhaust system to ensure safety.

4、 Summary

comply withThe materials and products of UL94 and GB/T2408-2008 are widely used in fields such as power, electronics, and construction. Their flame retardant properties have been rigorously verified by professional equipment such as horizontal and vertical combustion testers. When selecting, comprehensive consideration should be given to specific application scenarios (such as outdoor weather resistance, fire rating) and testing standards (such as 50W or 500W flames).