| abstract |
Disclosed is a polyethylene composition, comprising the following components in parts by weight: 100 parts of a polyethylene resin, 0-34 parts of a filler and 0.05-2.5 parts of a foaming agent; the polyethylene resin is a low-density polyethylene resin, and at 230°C and a load of 2.16 kg, the melt mass flow rate of the polyethylene resin is 10-30 g/10 min. In the present invention, by means of optimizing polyethylene materials having different fluidities, the described polyethylene composition is obtained as a micro-foaming material. A "sandwich" skin-core structure provided with a dense skin layer on the outside can be formed, and the structure has fine and dense pores. The present invention can achieve a weight loss of about 25%, has good sound insulation and good formability, and has good prospects in applications such as automobile air duct and wheel cover sound insulation materials and front wall sound insulation materials. Further provided is a method for preparing a polyethylene composition. |