Regenerated polyolefin plastic composition and preparation method thereof

The invention provides a regenerated polyolefin plastic composition and a preparation method thereof, and belongs to the field of regenerated polyolefin plastics. The composition comprises the following components in parts by weight: 10-90 parts of polyolefin recycled plastic, 0.5-3 parts of a nano carbon material, 1-15 parts of a coupling agent and 2-20 parts of a modifier and/or a reinforcing agent, the nano carbon material is prepared by sintering polyolefin recycled plastic and a catalyst. According to the invention, the nano carbon material which can play an obvious reinforcing role with a very low addition amount is used as the modifier, so that the mechanical, weather-proof and electromagnetic properties of the regenerated polyolefin plastic are improved. Besides, the nano carbon material serving as an auxiliary agent and the recycled polyolefin plastic used for regeneration have the same root and homology, it is ensured to a certain extent that part of impurities contained in the nano carbon material