Product Overview
This Machine is a specialized instrument designed to test the high-pressure gas dynamic permeability of automotive airbag woven fabrics and other protective woven fabrics used in high-pressure dynamic gas permeation scenarios. It fills the gap in China's test standards for high-pressure gas dynamic permeation of woven fabrics, providing a scientific and unified basis for the evaluation and testing of protective woven fabrics.
Application Scope
For testing the high-pressure gas dynamic permeability of automotive airbag woven fabrics;
For testing protective woven fabrics used in other high-pressure dynamic gas permeation scenarios.
Test Mode
Thin-Film Rupture Method: In a fixed-volume space, a thin film ruptures to instantly generate high-pressure gas with an initial pressure, which then permeates a woven fabric of a specified area. As permeation proceeds, the gas pressure gradually decreases; permeation stops when the pressure on both sides of the fabric equalizes. The tester calculates the rate of high-pressure gas passing through the unit area of the fabric at a specific pressure (to obtain the dynamic air permeability), and the rate of change of dynamic permeation rate with pressure-thus determining the high-pressure gas dynamic permeability of the woven fabric.
Related Standards
T/CNTAC·220-2024 Determination of Dynamic Permeation Rate to High-Pressure Gas for Airbag Protective Woven Fabrics - Thin-Film Rupture Method
ASTM D6476-2021 Standard Test Method for Determining Dynamic Air Permeability of Inflatable Restraint Fabrics
Instrument Features
1.Imported High-Precision Dynamic Pressure Sensor: High natural frequency, suitable for measuring high dynamic pressure transients; equipped with acceleration compensation, ensuring reliable measurement even under high-vibration conditions.
2.Dual Safety Design: Two-handed start and double safety clamp design enhance operational safety.
3.Air-Powered System: High cleanliness, automatic induction rupture system, sensitive and reliable.
4.Pneumatic Clamping: Uniform sample clamping system for stable test conditions.
5.Microcomputer Control: Automates rupture testing, calibration, data processing, and outputs results in experimental report format.
6.Color Touch Screen Interface: Supports Chinese/English menu operation and computer communication.
7.Real-Time Dynamic Curve Monitoring: The screen displays live test curves for real-time verification of test normality.
8.USB Data Export: Test data can be exported via USB drive, adapting to diverse on-site test environments.
9.Built-In Thermal Printer: Enables on-demand report printing.
Technical Parameters
1.High-Pressure Chamber Inner length: 500mm; inner diameter: 50mm; precision: ±1mm
2.Low-Pressure Chamber Inner length: 700mm; inner diameter: 50mm; precision: ±1mm
3.Dynamic Air Permeability Sampling Frequency ≥200kHz
4.Burst Pressure Detection Range 0-700kPa; linearity: ≤±1.0%FSO
Burst Film Thickness: (19±0.5)μm; diameter: (80±2)mm
5.Dynamic Air Permeability Range ~(0.1-2.0) m³/m²/s (≈100-2000L/m²/s)
6.Flow Unit m³/s, etc.
7.Test Diameter (50±1)mm
8.Data Storage Capacity 1G
9.Typical Single Test Time ≤100ms
10.Power Supply AC220V±10% 50Hz 1kW
11.Weight Approx. 130kg
12.Overall Dimensions 550*550*1800mm
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