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Glass fiber for FRP is typically manufactured by:
A{'text': 'Sintering of powder', 'label': 'C'}
B{'text': 'DRAWING molten glass through small platinum-alloy bushings, then sizing with a coupling agent for resin compatibility', 'label': 'B'}
C{'text': 'Crystallization', 'label': 'D'}
D{'text': 'Melt-extrusion of polymer', 'label': 'A'}
Answer & Solution
Correct answer: B. {'text': 'DRAWING molten glass through small platinum-alloy bushings, then sizing with a coupling agent for resin compatibility', 'label': 'B'}
Continuous filament glass is drawn from a molten glass furnace through bushings (typically Pt-Rh alloy) with thousands of small holes. The drawn filaments are immediately coated with a "sizing" — a chemical coupling agent (e.g., silane) ensuring good resin adhesion.
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