The invention discloses a
polyolefin rotational molding foaming composition, a product and a preparation method, and belongs to the technical field of foaming compositions. The problems that in the prior art, chemical foaming agents AC and the like are adopted for preparing foamed
polyethylene, raw materials are prone to aging degradation, discoloration, bubble collapse, uneven foam holes and the like are solved. The
polyolefin rotational molding foaming composition consists of an outer layer
raw material and a core layer
raw material, the
raw material of the outer layer comprises linear low-density
polyethylene powder; the core layer material is prepared from, by
mass, 50-65 parts of high-density
polyethylene, 10-20 parts of
ethylene propylene rubber, 10-15 parts of
plasticizer, 6.5-9 parts of water, 0.5-2 parts of
sodium bicarbonate, 1-3 parts of
silicon dioxide and 0-2 parts of
lubricant. According to the
polyolefin rotational molding foaming composition, water is used as a
foaming agent, the compatibility of the raw materials is good, the aperture of a product is uniform and fine, large bubbles and serial holes basically do not exist, a good foaming effect can be achieved, and the composition is
environmentally friendly, good in practicability and easy to directly recycle.