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Peroxide crosslinking semi-conductive shielding material is a type of compound used in the manufacturing of power cables, particularly for high-voltage applications. Here's some information about this material:
Composition: This material typically consists of a base polymer, often ethylene-vinyl acetate (EVA) or ethylene-propylene rubber (EPR), along with additives such as carbon black for conductivity and peroxide crosslinking agents.
Crosslinking Process: The peroxide crosslinking process involves the use of organic peroxides as crosslinking agents. When exposed to heat, these peroxides decompose and generate free radicals, which initiate crosslinking reactions between polymer chains, resulting in a three-dimensional network structure. This crosslinking enhances the mechanical, thermal, and electrical properties of the material.
Semi-Conductive Properties: The addition of carbon black to the polymer matrix provides semi-conductive properties to the material. This enables it to create a uniform electric field and minimize electrical stress concentrations, thus improving the overall performance and reliability of the cable insulation system.
Applications: Peroxide crosslinking semi-conductive shielding material is primarily used in the construction of power cables, particularly for medium and high-voltage applications. It is commonly employed as a shielding layer surrounding the conductor in power cables to provide electrical insulation and minimize electromagnetic interference.
Enhanced Electrical Performance: The semi-conductive properties of the material ensure uniform electrical stress distribution, reducing the risk of electrical breakdown.
Improved Mechanical Strength: Crosslinking increases the material's mechanical strength and resistance to deformation, enhancing its durability and longevity.
Thermal Stability: Crosslinked polymers exhibit improved thermal stability, allowing the material to withstand high temperatures without degradation.
Environmental Resistance: The material offers resistance to environmental factors such as moisture, chemicals, and UV radiation, ensuring long-term performance in harsh conditions.
Manufacturing Process: The production of peroxide crosslinking semi-conductive shielding material involves compounding the base polymer with carbon black and peroxide crosslinking agents, followed by extrusion or molding to form the desired shape or configuration.
Peroxide crosslinking semi-conductive shielding material plays a crucial role in ensuring the safe and reliable transmission of electrical power in various applications, offering enhanced electrical performance, mechanical strength, and environmental resistance.
