2results about How to "Extend fire resistance time" patented technology

This invention belongs to the field of cable technology, and specifically discloses a curve-heat-rise fire-resistant power cable. The curve-heat-rise fire-resistant power cable includes a sheath layer comprising an outer sheath and an inner sheath arranged sequentially. The inner sheath comprises the following raw materials: methyl vinyl silicone rubber, a refractory composition, silica, tetramethyldivinyldisiloxane, epoxidized soybean oil acrylate, a heat stabilizer, an accelerator, and a diphenylsulfonate. The refractory composition comprises modified ceramic material, sulfonate flame retardant, and polyarylene ether nitrile in a mass ratio of (45~52):(25~38):(17~23). This application uses ceramicized silicone rubber material as the inner sheath and a specific mass ratio of modified ceramic material, sulfonate flame retardant, and polyarylene ether nitrile as the refractory composition, significantly improving the high-temperature resistance, excellent thermal stability, and excellent fire resistance of the power cable, effectively increasing the fire resistance time of the power cable under the temperature rise curve.

This invention provides a flame retardant for water-based fire-retardant coatings for steel structures, prepared from the following raw materials: urea, phosphoric acid, acidic lignin, and pentaerythritol; the weight ratio of urea, phosphoric acid, acidic lignin, and pentaerythritol is 1:(0.8-1):(0.1-0.5):(0.01-0.05). Applying this flame retardant to water-based fire-retardant coatings for steel structures achieves both moisture resistance and flame retardancy.