Material Analysis
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Glass Fibre insufficient toughness, brittle fracture
Problem Phenomenon
Glass Fibre product elongation at break <50%, brittle fracture without yield
Cause Analysis
Glass Fibre molecular weight too low, toughness foundation insufficient; excessive crosslinking loses toughness; coarse crystallization increases brittleness
Solution
1) Select high molecular weight Glass Fibre to improve toughness; 2) control crosslinking degree to avoid excess; 3) nucleating agent refines crystallization to improve toughness
Key Takeaway
Insufficient toughness is caused by low molecular weight and coarse crystallization; selecting high MW is key
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