In a FILLED COMPOSITE (filler + matrix), the FILLER's typical role is …

Question

In a FILLED COMPOSITE (filler + matrix), the FILLER's typical role is to:

Accepted Answer

D. {'text': 'MODIFY the matrix properties (cost reduction, viscosity control, flammability suppression, EMI shielding) — usually NOT a primary load-carrier', 'label': 'B'}

Fillers (calcium carbonate, talc, mica, hollow microspheres) are added at high loadings (10-50%) for cost reduction OR functional reasons (flame retardancy, conductivity, density tuning). They are NOT reinforcement; they typically reduce overall strength but improve specific properties or economics.

Answer

{'text': 'Increase fiber strength', 'label': 'D'}

Answer

{'text': 'Carry the primary load', 'label': 'A'}

Answer

{'text': 'Make the material biodegradable', 'label': 'C'}