用于防止橡胶产品与模具表面粘连，并能使之顺利出模而不致撕裂的一类物质。使用时将它喷或涂于模腔表面，以形成一层有效的隔离层。对脱模剂的主要要求是：有一定的热稳定性和化学惰性，不腐蚀模腔表面；在模腔表面下残留分解物；不影响产品色泽，但能赋予良好的外观；无毒；易于配制，使用方便。分无机、有机和聚合物几种。常用脱模剂是有机硅油。

A type of material used to prevent the adhesion of rubber products from the surface of the mold and to make it smooth out of the mold without tearing. When used, it is sprayed or coated on the surface of the cavity to form an effective layer of isolation. The main requirements for the release agent are: thermal stability and chemical inertness, no corrosion of the mold cavity surface, residual decomposition products on the surface of the mold cavity, no influence on the product color, but good appearance, no toxicity, easy preparation and convenient operation. Several kinds of inorganic, organic and polymer. The commonly used demoulding agent is organosilicon oil.