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MICROSPHERES (hollow glass spheres) used as filler in composites primarily improve:
A{'text': 'Magnetism', 'label': 'D'}
B{'text': 'Density reduction — making syntactic foams that are lightweight while keeping compressive strength', 'label': 'B'}
C{'text': 'Tensile strength', 'label': 'A'}
D{'text': 'Electrical conductivity', 'label': 'C'}
Answer & Solution
Correct answer: B. {'text': 'Density reduction — making syntactic foams that are lightweight while keeping compressive strength', 'label': 'B'}
Hollow microspheres act as a low-density filler. Syntactic foams (microspheres + polymer matrix) achieve density well below the matrix density alone, with good compressive strength. Used in marine buoyancy, deep-sea ROV housings.
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