Flame-retardant insulating material for cable and preparation method of flame-retardant insulating material

The invention relates to the technical field of insulating materials, and discloses a flame-retardant insulating material for a cable and a preparation method of the flame-retardant insulating material. According to the flame-retardant insulating material provided by the invention, the crosslinked polyethylene is taken as a matrix, the magnesium hydroxide is modified, and the magnesium hydroxide is compositely loaded by using the organic carrier, so that the agglomeration of the magnesium hydroxide is prevented, the flame-retardant property of the insulating material is improved, and due to the addition of the organic carrier, the mechanical property of the crosslinked polyethylene is further improved. The flame-retardant insulating material provided by the invention does not have the problems of moisture absorption and damp of mineral insulating materials. 本发明涉及绝缘材料技术领域，公开了一种电缆用阻燃绝缘材料及其制备方法。本发明提供的阻燃绝缘材料以交联聚乙烯为基体，通过对氢氧化镁进行改性，将氢氧化镁用有机物载体复合负载，防止其团聚，提高绝缘材料的阻燃性能，由于有机物载体的加入，交联聚乙烯的力学性能也进一步提高。本发明提供的阻燃绝缘材料不存在矿物绝缘材料的吸