![]() ![]() On the other hand, silica attracted the groups accelerating acid and water migrations and thus enhancing damage to the network. This effect shielded the PDMS network against environmental chain scissions. Rutile TiO 2 reoriented methyl groups away from the particles reducing the diffusivities of water and hypochlorous acid. In addition, the effects of both TiO 2 and silica on the diffusivities of LV aqueous salt components in the PDMS were predicted and related to unique interfacial interactions between the particles and the methyl groups of the PDMS. Molecular dynamics (MD) simulations were conducted to determine the combined effect of TiO 2 and different concentrations of hydrophobic PDMS methyl groups on surface hydrophobicity of a TiO 2/PDMS composite. In this study, we are showing how to improve the resistance of the rubbers to extreme environmental aging by embedding TiO 2 micro-particles. ![]() We have recently shown that one component room temperature vulcanized (RTV-1) silicone rubbers (SIR) based on polydimethylsiloxane (PDMS) can be rapidly degraded by low voltage (LV) energized aqueous salt solutions by previously unreported aging mechanisms related to the formation of hypochlorous acid in high voltage (HV) transmission line applications. ![]()
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