A dynamic polymer with hybrid cross-linked network and its application

Abstract

The invention discloses a dynamic polymer with a hybrid cross-linking network, which includes ordinary covalent cross-linking and dynamic covalent cross-linking, wherein the dynamic covalent cross-linking is realized by organic borate silicon ester bonds. This kind of dynamic polymer combines the advantages of dynamic covalent organo-silicon borate bond and ordinary covalent bond, and through the regulation of the structure of reactants, polymers with rich structures and various properties can be prepared. The strong dynamic reversibility of dynamic covalent crosslinking in dynamic polymers enables polymers to exhibit functional properties such as stimuli responsiveness and self-healing properties, while ordinary covalent crosslinking endows polymers with a certain strength and Stability; in addition, the dynamic nature of organoborosilicate bonds can produce good energy dissipation and energy absorption effects, and toughen, damp and impact-resistant materials in specific structures. The dynamic polymer can be used to make shock-absorbing and buffering materials, impact-resistant protective materials, self-repairing materials, tough materials, and the like.

Description

technical field [0001] The invention relates to the field of intelligent polymers, in particular to a dynamic polymer with a hybrid crosslinking network composed of dynamic covalent bonds and ordinary covalent bonds. Background technique [0002] After entering the 21st century, the advancement of science and technology and the development of the economy have put forward higher requirements for polymers and their materials. On the basis of basic performance, polymers are also constantly developing in the direction of functionalization, intelligence and refinement. , polymer materials are also expanding from structural materials to functional materials with effects such as light, electricity, sound, magnetism, biomedicine, bionics, catalysis, material separation, and energy conversion. Materials, energy storage materials, photoconductive materials, nanomaterials, electronic information materials and other new polymer materials with functional effects. The research on the rel...

AI Technical Summary

Problems solved by technology

At present, polymer systems cross-linked by dynamic covalent bonds are still relatively rare, and the dynamics of existing dynamic covalent bonds are very limited, often need to add catalysts or provide energy (such as heating, light, etc.) Equilibrium process, which makes it very limited in the construction of dynamically covalently cross-linked polymer materials

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