Damping Analysis of Some Inorganic Particles on Poly(butyl-methacrylate)

Viscoelastic polymers can be used as damping materials to control unexpected vibration and noise through energy dissipation. To investigate the effect of an inorganic filler on damping property, a series of inorganic particles, Ferriferous oxide(Fe(3)O(4)), Graphene/Fe(3)O(4)(GF), and Fe(3)O(4) of demagnetization(α-Fe(2)O(3)) were incorporated into poly(butyl-methacrylate) (PBMA). The effects of the dispersion of particles, as well as the interaction between particles and the PBMA matrix on the damping property of composites, were systematically studied. Results revealed that the addition of three types of particles can effectively improve the damping properties and broaden the effective damping temperature range. Dispersion of α-Fe(2)O(3) in the PBMA matrix is better than that of Fe(3)O(4). As a result, the damping peak can be increased more. The interaction between GF and the PBMA matrix is stronger than that between Fe(3)O(4) and the PBMA. The damping peak of the composites can be suppressed by GF, which is opposite to Fe(3)O(4) and α-Fe(2)O(3). In addition, glass transition temperature (T(g)) of all composites in the study shifted to low temperatures.