Dynamic properties of rubber vibration isolators and antivibration performance of a nanoclay‐modified silicone/poly(propylene oxide)–poly(ethylene oxide) copolymer with 20 wt % LiClO₄ blend system

Abstract

This research explores the interlayer effect, hysteresis behavior, and dynamic antivibration properties of a poly(propylene oxide)-poly(ethylene oxide) copolymer with 20 wt % LiClO 4 (PEL) for modified silicone [silicone/ polymer electrolyte (SP)] blends with clay and organoclay in various amounts. The results show that the polymer chains of PEL expand the clay gallery distance from 1.21 to 1.84 nm. Clay, after it has been organically modified, is added to SP blends, and its gallery spacing shortens from 2 to 1.7 nm. From the compression hysteresis results, along with the increased content of unmodified clay, the antivibration performance of the blends is elevated. In the dynamic antivi-bration testing results, along with the addition of clay and organoclay, the dynamic ratio of the blends is decreased; thus, in the vibration isolation performance, there is evidence of an elevated effect. On the other hand, after the clay is modified with ammonium salt, its vibration isolation effect is not better than that of the unmodified clay. In terms of the formulation of the nanocomposites, when the concentration of the clay is less than 4 wt %, it has a better effect on the vibration isolation and antivibration effect of SP blends.

Studies on PEBAX/organoclay nanocomposites by meltintercalation process: Effect of organoclay surface

“…cations, positioned between the silicate clay layers. The long carbon chains of ammonium salt were squeezed by the PEO block and increased the free volume, creating a plasticizing effect [24,25]. Of course, the combination of the two reversed effects (the mobility limitation of the chains in the presence of the montmorillonite surface and the plastic effect of the ammonium salts, squeezed by the PEO block) caused the shifting of T g to be insignificant.…”

Reinforcement of Dynamically Vulcanized EPDM/PP Elastomers Using Organoclay Fillers: Dynamic Properties of Rubber Vibration Isolators and Antivibration Performance

“…Therefore, in the earlier studies of Ugar [17], Weibo and Fengchang [9], Oborn et al [15], and Yamada et al [16], a sandwich structure of polymer/steel laminate was used to increase the stiffness of rubber. Some investigators have also used blended fillers [9,[18][19][20][21][22] and fibers [23][24][25][26][27] in polymers to enhance their stiffness and antivibration performance. Energy loss mechanisms include friction between polymer chains, friction between polymer/filler and fillers [6], and interactions between polymer and fibers.…”