T/SGX 019-2024 New energy vehicle-specific dual-layer self-curling protective sleeve for preventing collisions

Scope

Scope: This document specifies the terms and definitions, requirements, test methods, inspection rules, and marking, packaging, transportation, and storage for anti-impact double-layer self-winding protective sleeves for new energy vehicles. This document applies to the production and inspection of anti-impact double-layer self-winding protective sleeves for new energy vehicles with a use temperature range of -40°C to +150°C. The sleeves are made from fabrics obtained by interlacing two layers of yarns in a specific manner, with polyester filament yarns used for the warp yarns and polyester monofilament yarns used for the weft yarns and the hemmed edges. Main technical contents: Low-temperature flexibility samples without breakage, continuous heat resistance samples without breakage, long-term heat aging samples without breakage, short-term aging samples without breakage, temperature-humidity cycling samples without breakage or melting, moisture-heat aging samples without breakage, abrasion resistance (scratching >200,000 times, dragging >1,000,000 times), flame retardancy ≤100 mm/min, impact resistance (no cracks on the appearance, no short circuits between the wire shielding layer and the conductors, normal power supply to the conductors), fluid resistance (no breakage, whitening, discoloration, or dirt on the samples, with recognizable color), and the mass percentages of prohibited substances (lead, mercury, hexavalent chromium, polybrominated biphenyls (PBBs), and polybrominated diphenyl ethers (PBDEs)) shall not exceed 0.1%, and the mass percentage of cadmium shall not exceed 0.01%.

Development Information

Related Standards