Flame retardant performance of PC41 for elevator sound-absorbing cotton UL94 V-0 certification guide

polyurethane catalyst pc41 and its application in elevator sound-absorbing cotton in modern buildings, elevators are an important tool for vertical transportation, and the noise problems generated during operation have always troubled architects and engineers. in order to improve passengers’ riding experience and reduce the impact on the surrounding environment, the application of sound-absorbing materials is…