Latest Technological Innovations in Cable Auxiliary Materials

Guangdong Deyuanheng Cable has introduced a fire-resistant cross-linked polyethylene (XLPE) insulation material modified with aluminum silicate fiber additives. By enhancing interfacial bonding through surface-modified reactive polymer flame retardants, the material achieves a 30% improvement in flame resistance while maintaining excellent mechanical strength (tensile strength ≥20MPa). This technology has been applied in urban grid renovation projects, effectively reducing fire risks.

China Southern Power Grid put into operation an 110kV polypropylene (PP) insulated cable in Guangzhou, using non-cross-linked green materials. Compared with traditional XLPE cables, this technology reduces carbon dioxide emissions by 6.2 tons per kilometer, shortens the production cycle by 80%, and cuts energy consumption by 40%. Certified by the China Machinery Industry Federation, the material’s comprehensive performance reaches international advanced levels and is expected to be promoted in offshore wind power grid integration and other scenarios.

Hainan Deyingman Industrial has developed a tear-resistant and flame-retardant protective material for photovoltaic cables, replacing traditional mineral fillers with lignin bio-based fillers. While maintaining flame resistance (oxygen index ≥32), this material increases recyclability by 40%. Certified by UL, it is suitable for complex environments in photovoltaic power stations.

Hebei Shanghua New Materials has developed a halogen-free low-smoke flame-retardant sheath material using UV irradiation cross-linking technology. Capable of maintaining power transmission for 3 hours in a 300℃ flame, it features a smoke transmittance ≥70% and complies with the EU RoHS 2.0 standard. This material is mass-produced for fire-resistant cables in rail transit and high-rise buildings.

The Shanghai Cable Research Institute, in collaboration with universities, has developed nano-microcapsule self-repairing materials. By embedding microcapsules containing repair agents in the insulation layer, the material automatically releases repair agents when cracks form, achieving an insulation resistance recovery rate of 95% and doubling service life.

ZTT (Zhongtian Technology) has introduced a graphene-modified aluminum foil shielding layer with a thermal conductivity of 250W/(m·K), three times higher than traditional aluminum foil. This solves heat dissipation challenges for high-power cables and has been applied in 5G base station power supply systems.