Sinopec Corp.(SH:600028) DT新材料·2025-08-15 16:05Core Viewpoint - Yangzi Petrochemical has successfully produced a new EVA (ethylene-vinyl acetate copolymer) semiconductive shielding material, UE1930TK, becoming one of the few domestic companies capable of producing this product [2] Group 1: Product Development - Yangzi Petrochemical completed trial production of a new high-acetic acid content, low melt index EVA cable material, UE2850TK, on June 13, with all performance indicators meeting standards [2] - The new product enhances the EVA product structure and market competitiveness, primarily used in halogen-free flame-retardant cable applications, which are currently dominated by imported materials [2] - Compared to conventional EVA cable materials, the new product has a further reduced melt index, offering superior processing performance [2] Group 2: Industry Context - The demand for high-end wires and cables is rapidly increasing, particularly in electric vehicle charging stations and ultra-high voltage power grids [3] - EVA is widely used in low-smoke halogen-free cable materials due to safety concerns regarding harmful gases produced by PVC cables during combustion [3] - EVA serves as a base resin in low-smoke halogen-free materials, typically comprising 10%-30% of the formulation, and is often blended with other materials like PE to enhance strength [3] Group 3: Material Properties - EVA semiconductive shielding materials are critical for medium and high-voltage power cable shielding layers, ensuring uniform electric field distribution and preventing partial discharge [2] - The material exhibits excellent impact resistance, stress crack resistance, flexibility, high elasticity, and chemical stability, aligning with the green cable development trend [2]