Preparation and Catalysis of CNTs/PMMA Composite Particles

摘要

In order to modify the using performance of carbon nanotube in solid propellants of rocket, we coated the carbon nanotube by the Poly(methyl methacrylate)(PMMA) ,and characterized by TEM,FT-IR. To analyze the catalytic effect of CNTs/PMMA composite particles on the thermal decomposition of AP, the comparison samples by pure AP, simply mixing CNTs with AP respectively have been prepared, CNTs/PMMA/AP composite particles prepared by a novel solvent evaporation method and DTA experiments were used to characterize their catalytic performance. It is shown that CNTs/PMMA have the catalytic performance and the CNTs in the composite particles exhibit the better catalytic performance on the thermal decomposition of AP. Compared with the sample of pure AP, the peak temperature of high temperature decomposition of CNTs/PMMA composite particles decreases 113. 9℃ ,and the total heat release improves from 309. 92～984. 18 J/g,and the simply mixing sample is 709. 50 J/g. It is shown that the catalytic performance of CNTs on the thermal decomposition of AP can be improved by composition with PMMA, and we also find that the CNTs/PMMA/AP composite particles exhibit the best catalytic performance on the thermal decomposition of AP, compared with the sample of CNTs/ PMMA, the peak temperature of high temperature decomposition of CNTs/PMMA/AP composite particles decreases 7. 8℃ ,and the total heat release improves 114. 29J/g.