T/NBRTT 003-2023 Active Group standards

T/NBRTT 003-2023 The halogen-free flame-retardant thermoplastic elastomer sheath material used for charging stations for new energy vehicles

Publish Date: 2023-09-10 Implement Date: 2023-10-10 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/NBRTT 003-2023

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Comprehensive raw materials for rubber and plastics

Publish Date: 2023-09-10

Implement Date: 2023-10-10

Scope

Main technical content: 3 Technical requirements: The appearance should be well-plasticized, with uniform color, smooth surface, and no foreign impurities in the form of uniform granules. The color shall be agreed upon by both the supplier and the buyer. The performance requirements shall comply with Table 1. **Table 1: Performance Requirements** **No.** **Performance Requirement** 1 Mechanical properties Tensile strength/MPa ≥12 Elongation at break/% ≥400 Tear strength (trouser-shaped)/N/mm ≥201 100% elongation deformation/% ≤50 2 Heat aging in an air box (135±2°C for 168 hours) Tensile strength/MPa ≥12 Maximum change in tensile strength/% ±25 Elongation at break/% ≥400 Maximum change in elongation at break/% ±25 3 Acid resistance Maximum change in tensile strength/% ±30 Elongation at break/% ≥100 4 Alkali resistance Maximum change in tensile strength/% ±30 Elongation at break/% ≥100 5 Hydrolysis resistance (80±2°C for 168 hours) Maximum change in tensile strength/% ±30 Maximum change in elongation at break/% ±30 6 Impact brittleness performance (-40°C) ≤15/30 7 Volume resistivity at 20°C/Ω·cm ≥1.0×1014 8 Dielectric strength/MV/m ≥189 Heat shock test (150±3°C for 1 hour) No cracking 10 Vertical combustion V-0 (6 mm) 11 Thermal deformation (120±2°C) ≤50% The halogen content shall comply with Table 2. **Table 2: Halogen Content Requirements** **Item** **Requirements** Chlorine/mg/kg ≤900 Bromine/mg/kg ≤900 Total (chlorine + bromine)/mg/kg ≤1500 The limits of harmful substances shall comply with Table 3. **Table 3: Limits of Harmful Substances** **Item** **Requirements** Lead/mg/kg ≤900 Mercury/mg/kg ≤900 Cadmium/mg/kg ≤90 Hexavalent chromium/mg/kg ≤900 Polybrominated biphenyls/mg/kg ≤900 Polybrominated diphenyl ethers/mg/kg ≤900