Overview
Wire and cable grade polyolefin is a specialized category of polymers, primarily polyethylene and polypropylene, formulated specifically for electrical insulation applications. These materials are engineered to provide optimal dielectric properties while maintaining mechanical durability. Developed to meet the demanding requirements of the electrical industry, these polyolefins undergo precise compounding to achieve consistent performance characteristics. The formulation may include additives for UV resistance, flame retardancy, or thermal stabilization depending on the intended application environment.
Physical and Chemical Properties
The electrical properties of cable-grade polyolefins are their most critical characteristics, typically featuring volume resistivity >10^14 Ω·cm and dielectric strength >20 kV/mm. These materials maintain stable performance across a wide temperature range (-40°C to 90°C for standard grades). Mechanically, they offer good tensile strength (typically 10-30 MPa) and elongation at break (200-600%). Chemically, they resist most acids, alkalis, and solvents, though prolonged exposure to certain hydrocarbons may cause swelling. The exact properties vary significantly between low-density (LDPE), linear low-density (LLDPE), and cross-linked (XLPE) formulations.
Main Applications
The primary application is as insulation material for power distribution cables, including low-voltage building wires and medium-voltage underground cables. Specialized grades are used in high-voltage transmission lines and submarine cables. In the telecommunications sector, these polyolefins insulate fiber optic cables and data transmission wires. Automotive applications include wiring harness insulation where heat resistance and flexibility are critical. Emerging uses include renewable energy systems like solar panel interconnects and wind turbine cabling.
Safety and Storage
While generally safe to handle, precautions should be taken against dust inhalation during processing. Proper ventilation is recommended when heating the material above its melting point to avoid fume exposure. Storage should be in original packaging or sealed containers to prevent moisture absorption, which can affect processing characteristics. Shelf life is typically 12-24 months when stored properly. Fire safety measures should account for the material's combustible nature, though flame-retardant grades significantly reduce this risk.
B2B Procurement Guide
When sourcing wire and cable grade polyolefin, clearly specify your requirements for dielectric strength, thermal class rating, and any necessary certifications (UL, RoHS, REACH). Consider your processing method (extrusion speed, temperature profile) as formulations vary for different equipment. For large-volume purchases, request batch testing data to ensure consistency. Evaluate suppliers based on their technical support capabilities and ability to provide formulation adjustments for special requirements. Lead times typically range from 2-8 weeks depending on grade and quantity.
Related Manufacturers
- 主营：47d注塑、果汁瓶、tpu塑料、电线和电缆、外壳abs、pom塑料、53d注塑、高胶粉、hhm5502st、761注塑、德固赛、30d注塑、r-7注塑、垃圾袋、55d注塑、建材eva、pph管材、tpu德国、管材料、72d注塑、高抗冲、45d注塑、70d注塑、82d注塑、pp-韩国、500注塑
- 主营：tpu德国、758塑料、阻燃abs、聚烯烃、pa66塑料、高透明pp、紫外线pc、聚碳酸酯、阻燃尼龙、尼龙塑料、abs再生料、抗紫外线、黑色防火、增强尼龙、塑料颗粒、透明pc塑胶、阻燃pc塑胶、食品pp塑胶、纯树脂尼龙
- 主营：护套料、绝缘耐寒料、丁腈复合物、电缆料、低烟无卤聚烯烃电缆料、丁腈电缆料、丁硅电缆料、90度电缆料、PVC电缆料、紫外光辐照交联低烟无卤电缆料、低烟无卤电缆塑料颗粒、耐油低烟无卤电缆料、工业丁硅电缆专用料、丁硅复合物电缆料、丁硅电缆绝缘料、哑光弹性体电缆料、哑光电缆料、哑光电线电缆料、哑光pvc电缆料、丁晴pvc电缆料、NBR丁腈粉末、PVC绝缘料、改性塑料、医院用拉管塑料颗粒、pvc哑光料
- 主营：塑胶原料、abs、pc、热融级APAO、pp
- 主营：抗溶剂、ldf-260gg、收缩膜、聚烯烃、塑料袋、专用poe、胶黏剂、防火sbs、发泡eva、热熔胶、茂金属、材料eva、溶脂eva、熔喷布、poe美孚、塑料花、专用tpe、lgea33045、改性poe、eva塑料、服装袋、安全帽、电器abs、ptt化学、密封条、poe材料
- 主营：PP、LLDPE、LDPE、聚烯烃粉、HDPE、TPU、POM、EVA、PBT、PC、PC红外光学塑料、ABS、SEBS、MS、PET、TPE、PA6、PA12、PA66、PC/ABS、液体橡胶、改性材料、金发科技、浸塑粉、塑料助剂、降解材料
- 主营：工程塑料、通用塑料、热塑性弹性体、热塑性聚烯烃、合金塑料、塑胶原料
- 主营：环保阻燃剂、陶瓷化耐烧蚀剂、成炭剂、电线电缆料用、三氧化二锑替代
- 主营：母排管、新材料、缠绕带、电缆头、波纹管、保护盒、热熔胶、臂热缩、防护盒、保护管、标识卡、变压器、收缩管、自融带、标签管、自粘带、护套管、冷缩管、电胶布、防护罩、卡扣管、热缩盒、双臂热、硅胶带、终端头
- 主营：PCTG、TPX、LDPE、热塑性聚烯烃、PA6T
- 主营：聚烯烃、特种碳纤维复合材料、特种材料
- 主营：eva-g-mah、abs-g-mah、ul40028cc、热塑性聚烯烃、ul02528cc、紫外线、改性剂、瓶盖垫、poe-g-mah、聚丙烯、eva三井、热熔胶、粘合剂、abs自产、3mtf-9208、ul00728cc、eva自产、ptfe微粉、epdm-g-mah、ul04533eh2、hdpe-g-mah、poliskc211、3mtf-9207z、手感pp料、lldpe-g-mah、塑料耐热
- 主营：PBAT降解塑料、PP聚丙烯原料、PE聚乙烯原料、增韧级、POM聚甲醛原料、EPDM三元乙丙橡胶、马来酸酐接枝料、POE原料、POP原料、PMMA、EVA、TPU原料、PC聚碳酸酯原料、EAA原料、EBA原料、EMA原料、ABS原料、SEBS、SEPS、MS、PBT、PCTG、UHMWPE、COC
- 主营：ADMER树脂、粘合树脂、沙林树脂、聚烯烃、EAA、EMA、EMMA、增韧剂、粘合剂、塑料改性剂、相容剂、马来酸酐接枝PE、马来酸酐接枝PP、马来酸酐改性TPE、马来酸酐改性EVA、EVA-g-MAH、PP-g-MAH、PE-g-MAH、POM、PA66、PP、聚酰胺、霍尼韦尔蜡、聚乙烯蜡、蜡粉
- 主营：热塑性弹性体、石油树脂、SEBS、发泡级聚烯烃、SBS、SIS、TPU、TPV、阻燃TPU、抗静电TPU、增韧剂、氢化碳五树脂、氢化碳九树脂