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- W4283072912 abstract "Filler reinforced ethylene propylene diene monomer (EPDM) rubber was widely used as insulation material for solid rocket motors (SRMs). Carbon nanotubes (CNTs) were employed fillers owing to their excellent physicochemical properties. However, the addition of CNTs to EPDM reduces its thermal insulation performance. To solve this problem, polydopamine-coated CNTs (CNTs @ PDA) were prepared by in-situ polymerization and mixed with EPDM through mechanical compounding. The effects of CNTs @ PDA on the thermal properties and ablation resistance of the resulting CNTs @ PDA/EPDM were investigated. The results indicate that the addition of CNTs @ PDA can reduce the thermal conductivity of the insulation material and the maximum back temperature during oxyacetylene ablation test. The ablation rate of the insulation material decreased as the amount of PDA used to coat on the CNTs increased, compared with the uncoated CNTs (10-CNTs) formulation, the PDA-2 formulation reduced the linear ablation rate by 62 % to 0.01 mm/s. Furthermore, the micro-morphology of the char layer was observed by SEM, combined with the compression resistance of the char layer to explain the effect on the ablation performance of the insulation material. The mechanical performance test results also reveal that the CNTs @ PDA formulation has higher tensile strength." @default.
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- W4283072912 date "2022-08-01" @default.
- W4283072912 modified "2023-10-13" @default.
- W4283072912 title "Thermal insulation performance and ablation resistance of ethylene propylene diene monomer insulation materials reinforced with polydopamine-coated carbon nanotubes" @default.
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- W4283072912 doi "https://doi.org/10.1016/j.diamond.2022.109190" @default.
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