The utility model discloses a
flame retardance testing mechanism, which comprises a
combustion cabinet and a control cabinet, the front end of the
combustion cabinet is provided with a cabinet door, the top of the
combustion cabinet is fixedly connected with a ventilation
pipe, the ventilation
pipe is internally provided with a fan, the top in the combustion cabinet is provided with a fixed cylinder, and two inner side walls of the combustion cabinet are respectively provided with a sliding rail and an electric sliding table; a vertical positioning
assembly is connected to the bottom of the fixing
barrel, a horizontal positioning
assembly is connected to one side of the sliding rail, an electric cylinder is installed on a sliding table body of the electric sliding table, the output end of the electric cylinder is fixedly connected with an installation block, an igniter is installed on the installation block, and a display screen and control keys are arranged on the control cabinet. The
engineering plastic sample fixing device is reasonable in design, simple in structure, convenient to install and fix an
engineering plastic sample, and high in practicability, and meanwhile, the application range of the device is widened.