The sound absorption coefficients of PVC were measured at different frequencies and temperatures. The results show that the sound absorption coefficient of polymer as a function of the loss factor was detected when the sample′s thickness is fixed. And the polymer materials exhibit the special sound absorption frequencies. It is supposed that the damping polymer materials with a better sound absorption at a fixed frequency can be synthesized.
A novel graft macromolecular coupling agent with well-defined structure was synthesized by atom transfer radical polymerization(ATRP). Since the silicon of graft polymers possesses a strong affinity to hydroxyl mineral, it gives fillers some new properties such as the increase of the interaction of fillers with matrix. The properties, structure of macromolecular coupling agent and its composite were studied by dynamic mechanical spectra, IR, UV, NMR, GPC and SEM.
