GB/T 45006-2024 in English

Interpretation of the core content of the standard

This standard systematically specifies for the first time the full life cycle technical requirements for fiber reinforced composite pultruded sheets for wind turbine blades, with key points including:

Analysis of key technical requirements

1. Material classification system

Innovatively establish a four-dimensional coding system: Reinforcement material (GP/CP/HP/MP) + resin type (E/P/X) + cross-sectional shape (R/O/T/Z) + release cloth (Y/U). For example, GP62E-R120×5-Y means: glass fiber/62GPa/epoxy resin/rectangular cross-section (120×5mm)/with release cloth.

2. Mechanical properties

Key points of detection method

Implementation and application suggestions

1. Raw material control

Glass fiber modulus≥82GPa, carbon fiber≥230GPa, epoxy resin must comply with GB/T13657. Release cloth PA66 melting temperature≥250℃.

2. Key points of process verification

• Width tolerance ±0.5mm, thickness tolerance ±0.15mm
• The edge of the demoulding cloth is ≤8mm from the edge of the board
• The number of yarn joints within 10m is ≤3 and the spacing is ≥1m

3. Quality traceability requirements

Each roll of product must be marked with: Fiber/resin brand model + mechanical performance parameters + production batch + shelf life. It is recommended to establish a digital traceability system.