The invention belongs to the technical field of high
molecular materials, and relates to a composite
polyolefin material, a preparation method and a use of the composite
polyolefin material. The material comprises 9 parts of an outer layer
flame-retardant
polyolefin material and 1-4 parts of an inner layer reinforced polyolefin layer, wherein the outer layer
flame-retardant polyolefin material is prepared from the following components in parts by weight: 50-80 parts of polyolefin 1, 0-30 parts of a filler 1, 16-35 parts of a
fire retardant, 0-9 parts of a
flame retardant synergist, 0.1-0.4 part of an
antioxidant 1 and 0.1-0.4 part of a lubricating agent 1; and the inner layer reinforced polyolefin layer is prepared from the following components in parts by weight: 50-80 parts of polyolefin 2, 0-45 parts of a
glass fiber, 0-30 parts of the filler 2, 0-5 parts of a graft, 0.1-0.4 part of an
antioxidant 2 and 0.1-0.4 part of a lubricating agent 2. The material has the advantages of being low in cost, light in weight, good in
toughness balance, changeable in size and
fireproofing, and being capable of being used for a plurality of times.