| abstract |
The invention discloses a polyethylene composition, which comprises the following components in parts by weight: 100 parts of polyethylene resin, 0-34 parts of filler and 0.05-2.5 parts of foaming agent; the polyethylene resin is low-density polyethylene resin, and the melt mass flow rate of the polyethylene resin is 10-30 g/10min at 230 ℃ under the load of 2.16 kg. The polyethylene composition is a micro-foaming material obtained by optimizing polyethylene materials with different flowability, can form a sandwich skin-core structure with a compact skin layer outside, has fine and dense pores, can reduce weight by about 25%, has good sound insulation property and good formability, and has good prospects in applications such as automobile air pipes, wheel cover sound insulation materials and front wall sound insulation materials. The invention also provides a preparation method of the polyethylene composition. |