Anti-caking agent as well as preparation method and application thereof

The invention relates to an anti-caking agent. The anti-caking agent comprises the following components in parts by weight: 70-82 parts of base oil, 8-12 parts of an oil-soluble high-molecular surfactant, 5-10 parts of a chelating agent and 5-10 parts of a film-forming agent, wherein the film-forming agent comprises dammar resin. Through the synergistic effect of all the above components, a layer of compact three-dimensional oil film can be effectively formed on the surface of the fertilizer, so water molecules in air are prevented from permeating into the fertilizer through the capillary action, and the anti-caking agent has the advantage of being good in anti-caking effect and is especially suitable for urea-ammonium nitrogen fertilizer. 本发明涉及一种防结块剂，按重量份计，防结块剂包括如下成分：基础油70~82份，油溶性高分子表面活性剂8~12份，螯合剂5~10份，成膜剂5~10份，其中，成膜剂包括达玛树脂。本发明通过各组分的协同作用，能够有效地在肥料表面形成一层致密的立体油膜，阻碍空气中水分子通过毛细作用向化肥内部渗透，具有防结块效果好的优点，尤其适用于脲铵氮肥。