1results about How to "Enable mass manufacturing" patented technology

The present application belongs to the technical field of polyurethane / polyurea, and discloses a stress change material and a preparation method thereof. The stress change material comprises hydrophobic segments and hydrophilic segments. The stress change material can change in size in two ways under water stimulation: one is to absorb a large amount of water to induce rearrangement of the hydrophilic segments, so as to realize volume expansion; the other is to absorb a small amount of water as a plasticizer to promote the movement of the segments, so as to realize shape recovery. Meanwhile, due to the introduction of the hydrophobic segments, the polyurethane / polyurea can still maintain sufficient mechanical strength in a water environment, thereby widening the application range of the material.