Net cage for measuring water absorption rate of rigid foamed plastic

The utility model provides a mesh cage for measuring the water absorption rate of rigid foamed plastic, which comprises a hanging rod hung at the lower end of a balance, an upper hanging frame arranged at the lower end of the hanging rod, a lower hanging frame connected with the upper hanging frame and a heavy block hung at the lower end of the lower hanging frame, and one end of the hanging rod is provided with a first hanging ring used for being hung at the lower end of the balance. And the other end is provided with a first hook connected with the upper hanger. The hanging rod is hung at the lower end of the balance and lifts the upper hanging frame, a sample is placed between the upper hanging frame and the lower hanging frame to be clamped and fixed, and the upper hanging frame is adjusted on the supporting rod in a lifting mode through the sleeve so as to adapt to the thicknesses of different samples; the heavy block is hung on the second hook through the third hanging ring and is not in direct contact