Abstract
Impact-protective materials are used in many fields owing to their excellent mechanical properties, impact resistance, and rapid responses to external stimuli. In this study, a new organohydrogel (PAIG) was designed and prepared through emulsion copolymerization by combining polymer chain segment as a skeleton and oil phase containing IHP as dynamic crosslinking points. The PAIG gel system provided a stable structure and overcame the cold flow property of impact-hardening polymers (IHP) with a tensile stress of 0.48 MPa. In addition, the introduced flexible IHP chains provided a large number of boron–oxygen dynamic bonds and hydrogen bonds, which improved both the impact resistance (the peak force reduction rate of 74 %), speed- response and the self-healing ability (with an efficiency of ca. 90 %). Impressively, PAIG can withstand cyclic twisting and bending even at −20 °C, showing its excellent freezing resistance. These properties make the PAIG promising for intelligent impact-protection applications.
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