Textile far infrared emissivity tester

Introduction

With the continuous advancement of technology, new types of fibers and textile products have emerged, leading to increasingly high demands on textile performance. To meet these requirements, various performance tests must be conducted, including far-infrared emissivity testing. This document introduces the principles, applications, and compliance standards of textile far-infrared emissivity testers.

Testing Principle

The textile far-infrared emissivity tester determines the far-infrared performance of various textile products (including fibers, yarns, fabrics, nonwovens, and their products) through far-infrared emission measurement. The principle involves:

1. Placing a standard blackbody panel and sample on a heating plate sequentially
2. Adjusting the heating plate temperature to specified levels
3. Using a far-infrared radiation measurement system with spectral response coverage of 5μm~14μm to measure the radiant intensity of both the standard blackbody and sample after thermal stabilization
4. Calculating the sample's far-infrared emissivity through the ratio of radiant intensity between sample and standard blackbody

Applications

This tester is widely used in textile quality control for:

- Evaluating far-infrared properties of natural fibers (cotton, wool) and synthetic fibers (polyester, nylon)
- Testing emissivity performance of yarns and fabrics in different textile structures
- Quality assessment of nonwoven materials and finished garments
- Providing data support for product design optimization and production process improvement

Compliance Standards

The tester complies with:

**GB/T 30127.4-2013**: Standard for determination of far-infrared emissivity of textiles

Key requirements include:

- Test temperature range: 25°C~45°C
- Spectral measurement range: 5μm~14μm
- Use of certified standard blackbody panels
- Temperature control precision: ±0.5°C
- Emissivity calculation method: Radiant intensity ratio between sample and reference

Conclusion

The textile far-infrared emissivity tester is essential equipment for evaluating thermal radiation properties of textiles. Its applications include:

✅ Quality control of functional textiles (warmth-retaining, moisture-wicking)
✅ Performance evaluation of new fiber blends
✅ Research and development of smart textile materials
✅ Compliance testing for international market access

To ensure accurate results, strict adherence to standard operating procedures and regular calibration using certified reference materials are required.