Microstructure and Damping Property of Polyurethane Composites Hybridized with Ultraviolet Absorbents

Figure 2

SEM images of fracture surfaces of 329-composites with different mass ratios of 329: (a) 10%, (b) 20%, (c) 25%, (d) 30%, (e) 40%, (f) 50%, and (g) 60%.

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(b)

(c)

(d)

(e)

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(g)