The invention belongs to the technical field of preparation of interior decorations, and particularly relates to a preparation method of a
diatom slow rebound material. The method comprises the following steps: selecting 0.3-3 parts by weight of diatomite, 100 parts by weight of polyether
polyol, 3-4 parts by weight of water, 0-3 parts by weight of
silicone oil, 1-1.7 parts by weight of
organosilicon surfactant, 0.2-0.5 part by weight of delayed gel catalyst and 40-50 parts by weight of
diphenylmethane diisocyanate; when polyether
polyol and
diphenylmethane diisocyanate are fused, water and
diatom powder are added at the same time, the water serves as a
foaming agent for producing
polyurethane foam through reaction of the polyether
polyol and the
diphenylmethane diisocyanate, and a large amount of
toxic gas and peculiar smell can overflow in the production process of the
polyurethane foam;
diatom powder is used as an adsorbent for removing the
toxic gas and peculiar smell, so the preparation process is free of peculiar smell, and the prepared product is also free of peculiar smell; and a small amount of diatom
powder is blended into the diatom slow-rebound material, so the heat deformation temperature is increased, the bending strength is increased, the
decomposition rate is reduced, and the diatom slow-rebound material has non-flammable performance.