Halogen free low smoke and flame-retardant compounds for wires and cables
1 Scope
This standard specifies the product classification, technical requirements, test methods, inspection rules, packaging, marking, transport and storage of halogen free low smoke and flame-retardant compounds for wires and cables (hereinafter referred to as “halogen free low smoke and flame-retardant compounds”).
This standard is applicable to the sheath for halogen free low smoke and flame-retardant wires, cables and optical cables, and the insulation for halogen free low smoke and flame-retardant wires and cables with rated voltage of 3 kV and below.
This standard is applicable to halogen free low smoke and flame-retardant compounds made from one or more halogen free polymers or copolymers, with the addition of halogen-free flame retardants and other performance additives, by mixing, plasticizing, granulating.
This standard is applicable to thermoplastic and cross-linked halogen free low smoke and flame-retardant compounds.
Note: For cross-linked products, the specified properties refer to the properties of materials after cross-linking.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 1040.3-2006 Plastics - Determination of tensile properties - Part 3: Test conditions for films and sheets
GB/T 1408.1-2006 Insulating materials - Test methods for electric strength - Part 1: Tests at power frequencies
GB/T 1410-2006 Methods of test for volume resistivity and surface resistivity of solid electrical insulating materials
GB/T 2406.2-2009 Plastics - Determination of burning behaviour by oxygen index - Part 2: Ambient-temperature test
GB/T 2408-2008 Plastics - Determination of burning characteristics - Horizontal and vertical test
GB/T 2951.21-2008 Common test methods for insulating and sheathing materials of electric and optical cables - Part 21: Methods specific to elastomeric compounds - Ozone resistance, hot set and mineral oil immersion tests
GB/T 5470-2008 Plastics - Determination of the brittleness temperature by impact
GB/T 8323.2-2008 Plastic - Smoke generation - Part 2: Determination of smoke density by a single-chamber test
GB/T 8815-2008 Plasticized polyvinyl chloride (PVC) compounds for wire and cable
GB/T 17650.1-1998 Test on gases evolved during combustion of materials from cables - Part 1: Determination of the amount of halogen acid gas
GB/T 17650.2-1998 Test on gases evolved during combustion of materials from cables - Part 2: Determination of degree of acidity of gases by measuring pH and conductivity
IEC 60684-2: 2003 Flexible insulating sleeving - Part2: Methods of test
3 Product classification
3.1 Code
3.1.1 Series code
Halogen free low smoke and flame-retardant WDZ
3.1.2 Usage code
Insulation J
Sheath H
3.1.3 Material characteristic code
Thermoplastic polyolefin Y
Thermoplastic copolyester elastomer TPC
Thermoplastic styrenic elastomer TPS
Thermoplastic polyurethane elastomer TPU
Foreword i
1 Scope
2 Normative references
3 Product classification
3.1 Code
3.2 Product representation method
4 Technical requirements
4.1 Appearance
4.2 Color
4.3 Properties
5 Test methods
5.1 Appearance inspection
5.2 Specimen preparation
5.3 Tensile strength and elongation at break
5.4 Thermal aging in air oven
5.5 Deformation at 100% elongation
5.6 Thermal deformation
5.7 Volume resistivity
5.8 Dielectric strength
5.9 Thermal shock resistance
5.10 Thermal set
5.11 Impact brittleness temperature
5.12 Ozone resistance
5.13 Hot water immersion
5.14 Oxygen index
5.15 Vertical combustion
5.16 Smoke density
5.17 Content of HCl and HBr
5.18 HF content
5.19 pH value and conductivity
5.20 Toxic hazard of smoke generated from a material
6 Inspection rules
6.1 Inspection classification
6.2 End-of-manufacturing inspection
6.3 Type inspection
6.4 Batching and sampling rules
6.5 Qualification judgment
7 Packaging, marking, transport and storage
7.1 Packaging
7.2 Marking
7.3 Transport
7.4 Storage
Annex A (Normative) Method for thermal shock test
Bibliography
