GB/T 38473-2020 in English
VALIDTextiles－Determination of drying rate in dynamic state (sweating guarded-hotplate test)
- Issued on:2020-03-06
- Implemented on:2020-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$136.00
《GB/T 38473-2020纺织品 动态条件下干燥速率的测定（蒸发热板法）》由TC209（全国纺织品标准化技术委员会）归口，TC209SC1（全国纺织品标准化技术委员会基础标准分会）执行，主管部门为中国纺织工业联合会。
Introduction
Analysis of the core content of the standard
This standard uses the evaporative hot plate to measure the dynamic drying performance of fabrics under simulated human sweating conditions. The main technical features include:
- Test environment: temperature (35±0.5)℃, humidity (40±3)%
- Water injection volume: (5±0.1)mL grade 3 water
- Key indicator: monitoring of changes in moisture resistance value (Ret)
Comparative analysis of international standards
| Comparison dimensions | GB/T 38473-2020 | ISO13029:2012 |
|---|---|---|
| Reference standards | GB/T11048 is used instead of ISO11092 | ISO11092 is directly quoted |
| Test water | GB/T6682 grade 3 water is required | No specific provisions are made |
| Data recording | It is mandatory to record the change of moisture resistance over time | No clear requirements |
Key points of technical implementation
Instrument configuration requirements
The test system must include:
- evaporative hot plate device that complies with GB/T11048
- Water injection hose system with an inner diameter of (3.5±0.5) mm
- Monitoring module that can record changes in moisture resistance in real time
The water injection height must be strictly controlled at (50±5) mm above the sample, and the water injection time must be (5±1) s.
Test process optimization suggestions
Based on the experience of standard implementation, it is recommended that:
- Extend the sample humidity adjustment time to 16 hours to ensure balance
- Test at least 5 sets of data for each sample to improve accuracy
- Regularly calibrate the evaporative hot plate temperature sensor
Application scenario analysis
This standard is particularly suitable for:
- Evaluation of quick-drying performance of sportswear
- Breathability test of medical protective clothing
- R&D verification of outdoor equipment fabrics
However, it should be noted that the standard clearly does not apply to materials with a thickness of >5mm or completely waterproof materials.
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