A kind of anti-aging flame-retardant cable insulation material and preparation method thereof

Abstract

The invention provides an anti-aging and flame-retardant cable insulating material. The insulating material is based on chloroprene rubber and natural rubber, and nano-alumina, maleic anhydride grafted polyethylene, 3-butene three are added to the raw materials. Ethoxysilane and other components, together with other raw materials, can make the prepared cable insulating material have excellent mechanical properties, anti-aging properties and insulating properties. The present invention also provides a preparation method of the insulating material.

Description

technical field [0001] The invention relates to an anti-aging flame-retardant cable insulating material and a preparation method of the insulating material. Background technique [0002] Cable materials are an important part of protecting cables from external damage, and are usually made of polymer functional materials. The cable material must be able to protect the inner and outer conductors of the cable and the insulating layer from the influence of the environment, climate, acid, and hydrolysis. At present, the main materials of the cable sheath material are mainly chlorinated polyethylene, chlorosulfonated polyethylene, polyurethane, polyethylene Vinyl, various natural or synthetic rubbers, etc. Existing cable sheath materials generally use a single polymer material as the main material. [0003] In addition, in the actual production process, the cable sheath material will be used with a large amount of inorganic fillers (such as inorganic reinforcing agents, inorganic...

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Problems solved by technology

[0003] In addition, in the actual production process, the cable sheath material will be used with a large amount of inorganic fillers (such as inorganic reinforcing agents, inorganic flame retardants, etc.), thereby changing the vulcanization properties, physical and mechanical properties and thermal properties of the rubber compound, but There are two disadvantages when inorganic fillers are directly added to the rubber compound: one is that the surface energy of inorganic filler particles is high, and they are in a thermodynamically unstable state, which is easy to aggregate into agglomerates, which directly affects the application effect of inorganic filler particles; Hydrophobic and oil-repellent, strong polarity, it is difficult to disperse evenly in the rubber compound, and the bonding force with the rubber compound is weak, causing interface defects, resulting in a decrease in the performance of the cable sheath material

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