Device for testing heat insulation performance of sample piece material

The utility model relates to the technical field of heat insulation performance detection equipment, and discloses a sample piece material heat insulation performance testing device which comprises a testing platform, the air supply system comprises a hot-air blower and an air supply pipeline, the air supply pipeline comprises a front-section pipeline, a middle pipeline and a rear-section pipeline, the middle pipeline is installed on the upper surface of the test platform, the hot-air blower is connected with the rear-section pipeline through the front-section pipeline and the middle pipeline in sequence, a notch is formed in the middle pipeline, and the front-section pipeline is connected with the rear-section pipeline through the notch. The middle pipeline is divided into a first pipeline and a second pipeline through the notch, and a sample piece material is arranged in the notch; the exhaust cooling system comprises a cooling device connected with the rear-section pipeline; a heating device; a temperature