Highly strong and tough photo-crosslinked hydrogel material and its preparation and application

A highly strong and tough photo-crosslinked hydrogel material, wherein the highly strong and tough photo-crosslinked hydrogel material is prepared from the following three components in a biocompatible medium:

• Component A:
• o-nitrobenzyl phototrigger modified photosensitive polymer derivative;
• Component B:
• double bond groups modified polymer derivative;
• Component C:
• photoinitiator,
• the o-nitrobenzyl phototrigger modified photosensitive polymer derivative is selected from the following component A-1 to A-30:
• the double bond groups modified polymer derivative having a structure shown in Formula III:
• where in the Formula III,
• R1′ and R2′ are selected from hydrogen;
• R3′ is selected from hydrogen or methyl;
• R4′ is selected from an alkyl group, an ether group, an ester group, or an amide group;
• n≥2;
• P1′ is hydrophilic natural macromolecules or hydrophilic synthetic polymers;
• wherein the concentration of the o-nitrobenzyl phototrigger modified photosensitive polymer derivative is 1% wt-40% wt, the concentration of the double bond groups modified polymer derivative is 0.05% wt-10% wt, the concentration of the photoinitiator is 0.1% wt-3% wt, and the rest is the biocompatible medium.