Material Drying
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Fiber-matrix interface moisture absorption causing performance deterioration
Problem Phenomenon
The mechanical properties of the product decline after long-term use in a humid environment
Cause Analysis
Microcracks at the fiber-matrix interface provide diffusion channels for water molecules; the hydrophilicity of the glass fiber itself promotes interfacial water penetration
Solution
Use silane coupling agents (such as KH-550/KH-570) to improve interfacial hydrophobicity; improve the compactness of interfacial bonding to reduce microcracks; perform sealing protection treatment on the product surface
Key Takeaway
Water penetration along the interface is an accelerating factor of performance aging
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