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The significantly improved damping property can be ascribed to the interfacial hydrogen bonds and the pulley effect of SGC molecules.ĭevelopment of high damping acrylic rubber/sliding graft copolymer composites Specifically, the loss factor (tan δ) value of ACM/SGC (100/40) composite increased by 120% compared with that of neat ACM, according to the RPA results. The damping performance of ACM/SGC composites under dynamic shear strain and frequency condition significantly improved with the increase in SGC content. A wide interphase region exists between these two phases, indicating the good blend compatibility between ACM and SGC. SGC particles disperse fairly uniformly in the ACM matrix. Micro-structure analysis shows a clear sea-island phase structure. Fourier transform infrared spectroscopy reveals the presence of two types of hydrogen bonds in ACM/SGC composites. SGC is a novel supramolecular material with sliding crosslink junctions, and it acts as a high damping phase in ACM/SGC composites. Aiming at fabricating high damping rubber composites, the acrylic rubber ACM was incorporated with sliding graft copolymer (SGC) materials.
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