Fireproof Fabric Combustion Performance Testing Specifications

Combustion Testing Equipment and Standards

Combustion performance is a core indicator of fireproof fabrics. DEEPROTECT™ employs the following equipment and standards for systematic testing:

Combustion Testing Equipment

Test Item	Equipment Model	Test Standard	Key Parameters and Criteria
Vertical Burning Test	Atlas HVUL-94 Vertical Burn Tester	UL 94	-V-0 Rating: Self-extinguishing within 10s, No Dripping - Burn Length ≤80mm
Horizontal Burning Test	GB/T 2408 Horizontal Burn Tester	GB/T 2408	Burn Rate ≤75 mm/min (HB Rating)
Limiting Oxygen Index (LOI)	Fire Testing Technology LOI100	ASTM D2863	LOI ≥32% (Self-Extinguishing Material)
Cone Calorimeter Test	FTT Cone Calorimeter	ISO 56601	- Peak Heat Release Rate ≤100 kW/m² - Total Smoke Release ≤200 m²/kg
Smoke Density Test	NBS Smoke Density Chamber (FTT SDC)	ASTM E662	Maximum Specific Optical Density (Ds max) ≤200
Toxic Gas Analysis	Thermo Fisher iCAN 9000 Gas Analysis System	EN 45545-2	CO ≤1000 ppm, HCN ≤150 ppm

Key Combustion Test Parameters

Vertical Burning (UL 94)

Test Conditions

- Sample Size: 125 mm × 13 mm × Thickness

- Flame Height: 20 mm (Methane Flame)

- Ignition Time: Two 10-second applications

Rating Criteria

Rating	Self-Extinguishing Time (Single Ignition)	Burn Length	Dripping
V0	≤10 seconds	≤80 mm	None
V1	≤30 seconds	≤125 mm	None

Limiting Oxygen Index (LOI)

- Principle: Measures the minimum oxygen concentration required to sustain combustion in a nitrogen-oxygen mixture.

Requirements

- LOI ≥28%: Flame-Retardant Material

- LOI ≥32%: Self-Extinguishing Material (DEEPROTECT® Standard)

Cone Calorimeter (ISO 5660-1)

Test Conditions

- Radiant Power: 50 kW/m²

- Sample Size: 100 mm × 100 mm × Thickness

Key Metrics

Parameter	DEEPROTECT® Standard
Peak Heat Release Rate (pHRR)	≤50 kW/m²
Total Heat Release (THR)	≤10 MJ/m²
Smoke Production Rate (SPR)	≤0.1 m²/s

Synergy Between Combustion Tests and Other Performances

DEEPROTECT® fireproof fabrics undergo simultaneous validation of multi-functional compatibility during combustion testing:

- Insulation Performance: Post-combustion insulation resistance ≥10⁹ Ω·cm (Test Equipment: Megger MIT1525).

- Soundproofing Performance: Post-combustion NRC reduction ≤10% (Test Equipment: Bruel & Kjaer 2250).

- Waterproof Performance: Post-combustion hydrostatic pressure ≥4000 Pa (Test Equipment: SDL Atlas Hydrostatic Tester).

Combustion Testing Equipment List

Equipment Name	Brand/Model	Application
Vertical Burn Tester	Atlas HVUL-94	UL 94 Certification
Cone Calorimeter	Fire Testing Technology FTT Calorimeter	Heat Release and Smoke Analysis
Toxic Gas Analysis System	Thermo Fisher iCAN 9000	Combustion Gas Toxicity Testing
Oxygen Index Tester	FTT LOI100	Material Self-Extinguishing Assessment

International Standards and Certifications

- Flame Retardancy: UL 94 V-0, EN 13501-1 Class A, GB 8624 Class A

- Toxicity Control: EN 45545-2 (Rail Transit), NFPA 130 (Subway Fire Safety)

- Comprehensive Certifications: DIN 4102 (German Building Fire Standards), BS 6853 (British Railway Standards)

Combustion Testing Workflow Example

- Pre-Treatment: Condition samples at 23°C/50% RH for 48 hours.

- Vertical Burning Test: Record self-extinguishing time and dripping.

- Cone Calorimeter Analysis: Measure heat release and smoke data.

- Toxic Gas Detection: Analyze concentrations of CO, HCN, etc.

- Post-Test Performance Verification: Validate insulation, soundproofing, and waterproofing after combustion.

Through rigorous testing, DEEPROTECT™ fireproof fabrics ensure fourfold protection in fires: flame retardancy, low smoke, non-toxicity, and stable performance.

For product-specific testing or technical guidance, contact the DEEPROTECT™ Technical Team!