Abstract: A flame arrester has a housing having an inlet and an outlet, and a flame retardant core arranged within the housing. Arranged within the flame arrester housing between the flame retardant core and the inlet is a flame arresting mechanism for preventing flames from directly impacting a central zone of the flame retardant core. The flame arresting mechanism may include a flame retardant barrel and a flame retardant plate assembly disposed within the flame arrester housing.

Abstract: Described are a halogenated hydroxyl terminated polyphosphoester and a prepolymer and a preparation method therefor, as well as a polyurea elastomer composition and a polyurea elastomer and an application.

Abstract: A flame arrester capable of automatically eliminating defects of a fire arresting portion. The flame arrester includes a fire arresting section, wherein the fire arresting section is provided with a fire arresting section housing, the fire arresting section housing is hollow and fire arresting section openings are respectively formed at two ends of the fire arresting section housing, blocking portions are respectively arranged at the fire arresting section openings so as to define a fire arresting cavity between the two blocking portions, a plurality of openings are formed in the blocking portion, the fire arresting cavity is filled with fire arresting particles, the fire arresting section further includes a fire arresting particle replenishment structure, and the fire arresting particle replenishment structure is configured to automatically fill the fire arresting cavity with the fire arresting particles when a gap is generated in the fire arresting cavity.

Abstract: A method and system for detecting structural performance of fire retardant disc includes the steps of obtaining passage structural information characterizing a structural feature of each passage in a fire retardant disc to be detected, analyzing said passage structural information and measuring a key feature size of each passage, statistically analyzing feature size distribution of each passage according to said key feature size, and determining a structural uniformity state of said fire retardant disc to be detected based on statistical result. The method is able to overcome the disadvantage of manual detection in the structural performance of the fire retardant disc, and effectively detect and assess the structural performance of the fire retardant disc in different use conditions.

Abstract: A flame arrester includes a flame arrester housing that has a fluid channel defined therein and an inlet and an outlet which are communicated with the fluid channel. The fluid channel is internally provided with a flame arresting unit for preventing flame propagation One side of the flame arresting unit is provided with a deformation unit configured to deform when the internal temperature of the fluid channel reaches a preset temperature to reduce the flow area of the fluid channel towards the outlet. The deformation unit is provided on one side of the flame arresting unit, and when continuous combustion is formed at the flame arresting unit, the deformation unit deforms to reduce the flow area of the fluid channel on the surface of the flame arresting unit to increase a gas flow rate to move the flame is away from the surface of the flame arresting unit.

Abstract: A flame arrester, has a housing having an inlet and an outlet, and a flame retardant core arranged within the housing. Arranged within the flame arrester housing between the flame retardant core and the inlet is a flame arresting mechanism for preventing flames from directly impacting a central zone of the flame retardant core. The flame arresting mechanism may include a flame retardant barrel and a flame retardant plate assembly disposed within the flame arrester housing.