Dynamic polymer composition with hybrid structure and application thereof

Abstract

The invention discloses a dynamic polymer composition with a hybrid structure. The dynamic polymer contains at least one common covalently cross-linked network with a carbon heterochain as a skeletonand with hydrogen bond groups on its chain backbone; and the dynamic polymer further contains dynamic covalent inorganic silicon borate bonds. Common covalent cross-linking endows the polymer with certain strength and stability. The existence of the inorganic silicon borate bonds allows the polymer to have good dynamic reversibility, present functional characteristics like stimulation responsiveness, exert good energy-absorbing effect and realize toughening and damping of materials in specific structures. The dynamic polymer composition can be used for preparing damping and buffering materials, shock-resistant protection materials, self-repairing material, tough materials, etc.

Description

technical field

[0001] The invention relates to the field of intelligent polymers, in particular to a dynamic polymer composition with a hybrid structure composed of ordinary covalent bonds, inorganic borate silicon ester bonds and supramolecular hydrogen bonds and its application. Background technique

[0002] Traditional polymers generally consist of ordinary covalent bonds. However, when only ordinary covalent cross-linking is used, if the cross-linking density is low, the mechanical properties are often poor; and if the cross-linking density is high, the cross-linked polymer is often hard and brittle; and the general chemical cross-linking The link lacks dynamics. Once the chemical cross-link is formed, the cross-link itself cannot be changed, and the properties of the polymer material are fixed. Rubbery cross-linked polymers are often used as damping and shock-absorbing materials because of their good viscoelasticity. However, due to the relatively fixed structure, it...

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