T/CI 116-2022 Ultra-thin insulated hard steel paper board

Scope

Scope: This document specifies the product classification, requirements, test methods, inspection rules, marking, packaging, transportation, and storage of ultra-thin insulating hard steel paperboard. This document applies to the manufacture of ultra-thin insulating hard steel paperboard with a thickness of 0.20 mm to 0.45 mm, used in electrical equipment insulation materials and other components. Main technical contents: 5. Requirements 5.1 Appearance 5.1.1 The surface of the ultra-thin insulating hard steel paperboard shall be flat, clean, and free from paper defects such as delamination, bubbling, and skin peeling. 5.1.2 The ultra-thin insulating hard steel paperboard shall not exhibit cracks or fractures. 5.1.3 The color of each batch shall be consistent. 5.2 Dimensions 5.2.1 The size deviation of flat paper shall be ±5 mm, and the size deviation of rolled paper shall be ±8 mm. 5.2.2 The skew shall not exceed 8 mm. 5.3 Technical Indicators The technical indicators of the ultra-thin insulating hard steel paperboard shall comply with Table 1. Table 1 Technical Indicators Indicator Name Indicator Thickness Deviation /% ±5 Density / (g/cm³) ≥1.05 Volume Resistivity (23°C ± 1°C) / (Ω·cm) ≥108 Breakdown Voltage Strength (at 50 Hz in air with a temperature of 23°C ± 1°C and a relative humidity of 50% ± 2%) / (kV/mm) ≥6.0 Cross-Sectional Tensile Strength (Longitudinal) / (kN/mm) ≥6×104 Interlayer Peel Strength / (N/m) ≥120 Delivery Moisture /% 8 ± 2 Zinc Chloride Content /% ≤0.20

Development Information

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