Composition for regenerated polyethylene foam board and preparation method thereof

The invention relates to the technical field of polyethylene resin, in particular to a composition for a self-regeneration polyethylene foam board and a preparation method of the composition. The composition for the regenerated polyethylene foam board is prepared from the following raw materials in parts by weight: 50-100 parts of regenerated low-density polyethylene, 0-25 parts of regenerated high-density polyethylene, 0-10 parts of low-density polyethylene, 0.4-1.2 parts of a composite antioxidant, 0.3-1.0 part of a lubricant, 4-12 parts of a foaming agent, 1-5 parts of an auxiliary foaming agent and 0.6-1.2 parts of a cross-linking agent. The composition for the regenerated polyethylene foam board can be used for a decorative board and an aluminum-plastic composite board, can be used for producing boards with different thicknesses according to requirements, has the effects of light weight, attractive appearance, sound insulation, heat insulation and the like, and is widely applied to various indoor decorat