In power,new energy,rail transit and high-end fire protection engineering sectors,electrical insulation materials require not only stable insulation performance under normal conditions,but also reliable safety backup performance under extreme fire scenarios.As a core indicator for evaluating insulation materials’resistance to high-voltage breakdown and guaranteeing electrical safety,dielectric strength directly determines equipment operational stability and safety margin.Conventional silicone rubber features good flexibility,temperature resistance and routine insulation capability.However,when exposed to high temperatures and open flames,its molecular structure tends to crack rapidly,leading to sharp degradation of dielectric strength or even complete loss of insulation function,which poses severe safety risks.To address this industry pain point,ANDI has developed and manufactured ceramic fire-resistant silicone rubber,which perfectly combines high dielectric strength with outstanding fire resistance and solves the long-standing drawback of traditional insulation materials—“reliable at room temperature but fails in fire”.

 

　　Dielectric strength,measured in kV/mm,is a key performance parameter of insulation materials,representing the maximum limit of a material to withstand high-voltage electric field breakdown.Commercially available ordinary silicone rubber generally delivers a room-temperature dielectric strength of 20–28 kV/mm,which only meets conventional low-voltage and static insulation applications at ambient temperature.Under high temperature,flame or long-term aging conditions,loose internal molecular structures generate micropores and defects,easily triggering partial discharge,electric leakage and breakdown.It cannot maintain the operation of emergency power supply circuits during fires and fails to satisfy safety standards for rigorous high-end working conditions.

 

　　With proprietary polymer modification formulation and precise compounding process,ANDI ceramic fire-resistant silicone rubber greatly optimizes the substrate microstructure and improves room-temperature dielectric performance.The product achieves a normal-state dielectric strength of 25–30 kV/mm,featuring excellent insulation uniformity,ultra-low dielectric loss and stable controllable volume resistivity,fully meeting the insulation design requirements of medium and high-voltage electrical equipment.Compared with ordinary silicone rubber,it has a compact internal structure and uniformly dispersed fillers,fundamentally reducing electric field weak points such as pores and interface defects.It effectively suppresses carrier migration and partial discharge,offering sufficient safety margin for daily insulation operation.It is suitable for high-precision applications including cable insulation,electronic encapsulation and high-voltage wiring harnesses.

 

　　The most prominent core advantage of ceramic fire-resistant silicone rubber lies in its retention of dielectric performance under high-temperature fire conditions,which is the key differentiator from ordinary silicone rubber.When exposed to open flames and high heat,common silicone rubber quickly softens,decomposes and carbonizes,losing insulation completely.In contrast,ANDI ceramic fire-resistant silicone rubber undergoes rapid phase transformation at temperatures above 450°C or under open flame combustion,in-situ forming a dense,hard and continuous inorganic ceramic protective layer.

 

　　This ceramic shell is flame-retardant,non-collapsible and stable in insulation at high temperatures.Even after exposure to extreme flame at 1000°C,it retains favorable residual dielectric strength and insulation resistance,continuously blocking high-voltage current and preventing short circuits and electric leakage.It ensures continuous power supply of emergency circuits during fires,buying precious time for personnel evacuation and equipment rescue,and truly realizing dual safety protection:**stable insulation under normal conditions and sustained power retention in fire**.

 

　　ANDI ceramic fire-resistant silicone rubber boasts excellent weather resistance and long-term stability.It can operate stably for a long time within a wide temperature range from-60°C to 200°C,resisting temperature cycling,humidity,contamination and UV aging.Its dielectric strength decays at an extremely low rate during long-term service,effectively cutting down equipment failure risks and extending the service life of insulation systems.In addition,the product is halogen-free,low-smoke,non-toxic and eco-friendly,releasing no corrosive gas during combustion.It fully complies with green safety standards for new energy,high-rise buildings and rail transit.It also has superior processability,compatible with extrusion molding and special-shaped part fabrication with stable mass production performance.

 

　　ANDI ceramic fire-resistant silicone rubber has been widely adopted in key fields such as high-voltage fire-resistant cables,new energy high-voltage wiring harnesses,fire emergency electrical equipment,busbar insulation protection and rail transit electrical encapsulation.With stable dielectric performance and top-tier fire-resistant insulation capability,it addresses the pain points of traditional insulation materials,namely single function and poor reliability under extreme working conditions.

 

　　Supported by dual core strengths of high dielectric strength and high-temperature ceramicization,ANDI ceramic fire-resistant silicone rubber breaks the industry limitation where insulation and fire resistance cannot be achieved simultaneously.With long-lasting,stable and safe comprehensive performance,it continuously empowers the upgrading of high-end electrical insulation and builds a solid safety barrier for all types of critical electrical equipment.