GB/T 41203-2021 in English
VALIDMethod for accelerated aging test of PV module encapsulating material
- Issued on:2021-12-31
- Implemented on:2022-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$97.00
《GB/T 41203-2021光伏组件封装材料加速老化试验方法》由TC203（全国半导体设备和材料标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Analysis of the core content of the standard
GB/T41203-2021 has established a dual-track accelerated aging evaluation system for photovoltaic module packaging materials:
| Test type | Core parameters | Applicable materials | Key indicators |
|---|---|---|---|
| High Pressure Cooking Test (PCT) | 121℃/100%RH | Glass/Film/Back Sheet | Transmittance Retention Rate |
| Ultraviolet High Temperature and High Humidity Test | 85℃/85%RH+UV | Glass/Film/Back Sheet | Yellowing Index ΔYI |
Technical Requirements for Instruments and Equipment
The standard puts forward strict accuracy requirements for key equipment:
- High Pressure Cooking Aging Test Chamber: temperature ±0.5℃, humidity ±3%
- UV High Temperature and High Humidity Aging Test Chamber: spectrum 280-400nm, irradiation uniformity ±15%
Key Points of Sample Preparation Specifications
Develop differentiated preparation plans for different materials:
| Material type | Dimension requirements | Lamination parameters | Appearance standards |
|---|---|---|---|
| Encapsulation film | 300×300mm | EVA cross-linking degree>75% | No bubbles or delamination |
| Photovoltaic backsheet | 200×10mm | Composite structure | No wrinkles |
Technological evolution and implementation suggestions
Main breakthroughs of this standard compared with the old industry specifications:
- Added UVB band energy proportion control (3%-10%)
- Clearly define the quantitative indicators of the cross-linking amount of laminated parts
- Introducing the difference algorithm of yellowing index ΔYI
Implementation suggestions: It is recommended that companies establish a test data traceability system, focusing on the performance inflection point data 48h and 72h after the PCT test
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