ANDI Ceramifiable Fire‑Resistant Silicone Rubber is a high-temperature vulcanized ceramifiable silicone compound specially developed for power industry fire-resistant cable systems.It adopts modified silicone rubber matrix compounded with ceramic functional fillers.At normal operating temperature,it retains excellent elasticity,mechanical strength and stable electrical insulation.When exposed to flame or high temperature during fire accidents,it rapidly converts into a dense,rigid,self-supporting ceramic protective shell without molten dripping,maintaining circuit integrity and preventing electrical short-circuit failure,which is the core passive fire protection material for critical power circuits

 

　　ANDI Core Material Properties

 

　　-Ceramization performance:Flexible and elastic under normal service conditions.When subjected to flame attack above 450℃,it quickly sinters into a continuous hard ceramic layer.The ceramic shell is mechanically stable and will not pulverize or fall off,avoiding secondary ignition caused by molten drops.

 

　　-Fire resistance&circuit integrity:Meets requirements for maintaining circuit integrity under flame exposure;the ceramic layer can withstand high temperature up to 1000℃,supporting 90 mins and longer fire resistance test.It complies with BS6387 CWZ and relevant GB/T 19216 standards for fire-resistant cables

 

　　-Electrical insulation:Reliable dielectric strength at ambient and elevated temperature.The ceramic residue still maintains insulation performance after flame erosion,preventing leakage and short-circuit of power lines.

 

　　-Environmental&safety performance:Halogen-free and RoHS compliant.Low smoke and low toxicity during combustion,reaching ZA1 smoke toxicity grade.It reduces toxic and corrosive gas release in enclosed power facilities.

 

　　-Processing characteristics:Designed for continuous extrusion process.It can be extruded as cable insulation layer or outer sheath,with outstanding extrusion manufacturability and stable processing performance for mass cable production.

 

　　Main Application Scenarios in Power Industry

 

　　1.Extruded insulation and sheath for medium&low voltage fire-resistant power cables(core application)

 

　　ANDI Ceramifiable Fire‑Resistant Silicone Rubber is directly extruded onto copper conductors as insulation or sheath for medium-low voltage fire-resistant cables.In normal operation,it provides insulation,abrasion resistance and bending flexibility for power transmission.In fire scenarios,the formed continuous ceramic shell protects conductors,keeps the circuit continuously energized,ensuring emergency power supply for critical loads such as fire pumps,emergency lighting and fire alarm systems

 

　　2.Fire-resistant cables for high-infrastructure power distribution

 

　　Cables extruded with this material are widely deployed in power distribution systems of high-rise buildings,commercial complexes,subway tunnels,airports,data centers,hospitals and nuclear-related auxiliary facilities.These sites require guaranteed power continuity under fire to support evacuation and fire rescue work

 

　　3.Mining&marine power cables

 

　　Applied to mining cables and shipboard power cables.It withstands harsh environments including vibration,humidity and mechanical impact.When fire occurs in tunnel or confined cabin,the ceramic barrier protects power circuits and restricts flame propagation along cable routes.

 

　　4.Auxiliary power circuit components for power station

 

　　Processed by moulding or cutting into fire-resistant insulating gaskets,busbar insulating sleeves and cable penetration sealing parts for power distribution cabinets and power station auxiliary systems,adding local fire and insulation protection for power equipment.

 

　　Case Benefits

 

　　This power infrastructure project selects ANDI Ceramifiable Fire‑Resistant Silicone Rubber as the base material for fire-resistant power cables.Compared with traditional mica tape wrapping solutions,the extrusion process simplifies cable manufacturing and improves production consistency.The flexible silicone rubber absorbs mechanical vibration stress during long-term service.

 

　　Once fire breaks out,the self-formed rigid ceramic shell preserves circuit integrity,keeps critical emergency power supply alive for extended duration and wins precious time for personnel evacuation and fire fighting.The low-smoke,halogen-free formula reduces secondary hazard in confined power facilities.This material balances electrical performance,long-term aging reliability and fire safety,satisfying strict safety requirements of power industry critical circuits.

 

　　Key Takeaways

 

　　-ANDI Ceramifiable Fire‑Resistant Silicone Rubber,engineered for power fire-resistant cables

 

　　-Rapid ceramization above 450℃,forms self-supporting ceramic shell,no dripping on burning

 

　　-Maintains circuit integrity under flame up to 1000℃,supports≥90 min fire resistance

 

　　-Halogen-free,low smoke&low toxicity,RoHS compliant

 

　　-Optimized for cable extrusion,serves as insulation or sheath for medium&low voltage power cables

 

　　-Suitable for buildings,subway,data center,mining and marine power distribution circuits

 

　　-Preserves emergency power supply and prevents short-circuit in fire events