T/CI 050-2022 Environmentally friendly crack-resistant, shrinkage-resistant, flame-retardant polyethylene cable material

Scope

Scope: This document specifies the terms and definitions, technical requirements, test methods, inspection rules, marking, packaging, transportation, and storage of environmentally friendly anti-cracking, anti-shrinkage, and flame-retardant polyethylene cable materials. This document applies to environmentally friendly anti-cracking, anti-shrinkage, and flame-retardant polyethylene cable materials (hereinafter referred to as "cable materials") for wire and cable applications. Main technical content: 4. Technical requirements 4.1 Appearance 4.1.1 The cable materials should be well plasticized, have uniform color, and be cylindrical particles with a diameter of approximately 3 mm to 4 mm and a height of 3 mm. 4.1.2 The color of the cable materials can be black, white, natural, red, yellow, green, orange, blue, gray, or brown, etc. 4. Performance The performance of the cable materials shall comply with the requirements specified in Table 1. Table 1 Performance Serial No. Item Requirements 1 Density, g/cm3 ≤ 1.30 2 Tensile strength, MPa ≥ 14.5 3 Elongation at break, % ≥ 450 4 Low-temperature impact embrittlement at -50°C, number of failures ≤ 15/30 5 Volume resistivity at 20°C, Ω·m 1.0×1013 6 Dielectric strength, MV/m ≥ 25.7 7 Oxygen index, % ≥ 28 8 Carbon black content, % (only for black cable materials) 2.5 ± 0.59 9 Oxidation induction period at 900°C, min ≥ 30 10 Heat cracking resistance (150°C × 7 kg × 1 h) No cracking 11 Environmental stress cracking resistance, F0/h 500 12 Shrinkage, % 0.3% 13 Thermal aging (110°C × 240 h) Strength change rate, % ± 25 14 Breaking elongation change rate, % ± 25 15 Tensile strength, MPa ≥ 14.0 16 Breaking elongation, % ≥ 400 Note: The products shall comply with the relevant requirements of the RoHS Directive and REACH Regulation.

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