Rubber compound for airtight liner of loading radial tire

The invention provides a rubber compound for an airtight liner of a loading radial tire, belonging to the field of a rubber tire. The rubber compound can be applied to the airtight liner of the loading radial tire, can effectively improve the air tightness and can promote other properties and reduce the production cost. The rubber compound for the airtight liner of the loading radial tire is prepared from the following raw materials in parts by weight: 100 parts of substrate rubber, 5.0-7.0 parts of active agents, 30-40 parts of carbon black, 10-25 parts of white carbon black, 5.0-15 parts of inorganic fillers, 20-33 parts of nanometer fillers, 3.0-5.0 parts of a softening agent, 0.8-1.5 parts of magnesium oxide, 5.0-10 parts of tackifying resins, 5.0-15 parts of hydrocarbon resin mixtures, 2.0-6.0 parts of a silane coupling agent, 0.5-1.5 parts of a vulcanizing agent, 1.0-2.0 parts of an accelerant and 0.1-0.5 part of a scorch retarder. 本发明提供了种载重子午线轮胎气密层橡胶组合物，属于橡胶轮胎领域，能够用于载重子午线轮胎气密层，可以有效提高气密性，同时提高其他性能并降低生产成本