Polyurethane material is used as an interior finish and wall cavity insulation. Flame-retardant products may be for ignition, flame diffusion, heat-release blocking. A large-scale test was conducted to understand the propagation characteristics of polyurethane with addition a retardant. The fire properties risks four commonly materials were examined using three tests. Specifically, ignition pro...

The present study aimed to develop the electrical performance of outdoor insulators using a nano-TiO2 coating for railway electrification systems. prototype design porcelain with normal coatings and is based on IEC 60815-1. first test was performed measure low-frequency flashover AC voltage under both dry wet conditions. In addition, other conducted lightning impulse critical-flashover at posit...

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Abstract The surface of epoxy composite material working in DC electric field for a long time is easy to accumulate charge and cause flashover, which seriously reduces its insulation level poses threat the safe operation electrical equipment. In this study, SiO x films were deposited on nano-SiO 2 /ER nanoparticles by atmospheric pressure dielectric barrier discharge plasma vapor deposition tec...