High dielectric adhesive tape and preparation method thereof

Abstract

The invention discloses a high dielectric adhesive tape and a preparation method thereof. The high dielectric adhesive tape is prepared from an adhesive tape substrate and an adhesive layer, wherein the adhesive layer is prepared from the following components in parts by mass: 140 to 190 parts of rubber, 65 to 90 parts of filler, 10 to 15 parts of an antioxidant, 10 to 40 parts of a tackifier and10 to 15 parts of a coupling agent, wherein the surface of the filler is coated with an insulating layer; the filler has comprises at least two different grain diameters. The high dielectric adhesivetape disclosed by the invention has relatively high dielectric constant, relatively low dielectric loss and relatively high breakdown strength and has a smooth surface; the high dielectric adhesive tape has physical mechanical properties including high elasticity, high tearing resistance and high strength and good properties including the high dielectric constant, high electrical resistivity and the like are matched; the high dielectric adhesive tape has good sticking performance with insulating silicon rubber and a circuit can be effectively protected; electric field stress in a transmissionline is dispersed. The high dielectric adhesive tape has the advantages of wide raw source of production raw materials, low cost, high production efficiency and high technology and pollution is not caused in a production process.

Description

technical field [0001] The invention relates to the field of electrical tapes, in particular to a high-dielectric tape and a preparation method thereof. Background technique [0002] With the continuous improvement of the living standard of our country's national economy, the concept of green environmental protection is deeply valued, and people's requirements for living standards are getting higher and higher. Due to the uneven distribution of energy resources across the country, the power consumption in various fields continues to increase, and the reasonable and effective deployment of power resources is also a severe challenge for the power transportation industry. The terrain and environment of various power equipment and transmission lines are different. Climate conditions are changeable. The demand for new high dielectric materials and high voltage resistant materials is increasing day by day. Therefore, the daily maintenance of power transmission lines and power gr...

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Problems solved by technology

However, the tape provided by the prior art has poor high-voltage resistance and poor adhesion to insulating silicone rubber. Due to the long-term exposure to high-voltage electricity, the temperature is much higher than the external temperature, which reduces the viscosity of the tape and is prone to leakage. , the surface is not smooth, the elasticity is not high, the tear resistance is not strong, the coordination of high dielectric constant and high resistivity is not good, the electric field stress concentration and other problems seriously affect the reasonable and safe use of the power grid system

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