31results about How to "Mild dynamic reaction conditions" patented technology

The invention discloses a dynamic polymer having a hybrid cross-linked network, and contains common covalent crosslinking and dynamic covalent crosslinking; and the dynamic covalent crosslinking is realized by organic boric acid silicon ester bonds. The dynamic polymer combines the advantages of dynamic covalent organic boric acid silicon ester bonds and a common covalent bond, and by regulation and control of a reactant structure, a dynamic polymer having abundant structure and various properties can be prepared. The dynamic covalent crosslinking in the dynamic polymer has strong dynamic reversibility, the polymer can present function characteristics of stimulation responsiveness and self-repair performance, and the common covalent crosslinking endows certain intensity and stability to the polymer; in addition, the dynamic nature of the organic organic boric acid silicon ester bonds can generate good energy dissipation and energy-absorbing effect, and is capable of toughening, dampingand resisting impact on a material in a specific structure. The dynamic polymer can be used for preparing a shock-absorption material, a shock-resistant protection material, a self-repair material, and a toughness material.

The invention discloses a dynamic polymer with a dynamic cross-linked structure. Organic boric acid silicon ester bonds are contained on polymer chain skeletons of a cross-linked network and/or on cross-linked link skeletons between polymer chains, wherein the organic boric acid silicon ester bonds are necessary for forming/maintaining a dynamic polymer structure. The dynamic polymer is rich in structure and diverse in properties. By regulating and controlling the structure of a reactant, the dynamic polymers with different properties can be prepared. In addition, due to strong dynamic reversibility of the organic boric acid silicon ester bonds in the polymer, the polymer can exhibit functional characteristics of stimulus responsiveness, self-healing property, recoverability and the like; and besides, due to the presence of the organic boric acid silicon ester bonds, the polymer can also have the energy absorbing effects, and polymer materials can be toughened in a given structure. The dynamic polymer can be used for making shock-absorption cushioning materials, impact-resistance protection materials, self-healing materials, ductile materials and the like.

The invention discloses an energy-absorbing method based on a combined hybrid cross-linked dynamic polymer. The energy-absorbing method realizes energy absorption by using the combined hybrid cross-linked dynamic polymer containing at least two boron-containing dynamic covalent bonds and common covalent cross-linking formed by a common covalent bond. Through introduction of the boron-containing dynamic covalent bonds with different dynamic natures and combination of the boron-containing dynamic covalent bonds with the common covalent bond, polymeric materials of abundant structures and with awide controllable range and diversified properties can be prepared. Due to the difference between the different boron-containing dynamic covalent bonds in the dynamic polymer, the dynamic polymer canpresent hierarchical dynamic reversible effects, so the dynamic polymer shows good energy dissipation and energy absorption characteristics and has toughening, damping and impact-resisting effects onmaterials in specific structures. The dynamic polymer of the invention is applicable to the body protection of people in exercises and daily life, the body protection of the military police, explosionprevention, protection in airborne landing and aerial delivery, collision prevention of automobiles, anti-impact protection of electronic products and electric appliances, etc.

The invention discloses a dynamic polymer with a hybrid cross-linked network. The dynamic polymer contains common covalent cross-linking and dynamic covalent organic borate bonds. The dynamic polymerintegrates the respective advantages of the dynamic covalent organic borate bonds and the common covalent cross-linking, and polymeric materials of abundant structures and with diversified propertiescan be prepared by regulating the structures of reactants. The high dynamic reversibility of the dynamic covalent organic borate bonds in the dynamic polymer allows the polymer to present the functional characteristics of stimulation responsiveness, self repair performance; the common covalent cross-linking endows the dynamic polymer with certain strength and stability; moreover, based on the dynamic nature of the dynamic organic borate bonds, the dynamic polymer has the characteristics of energy dissipation and energy absorption and the good functions of damping, shock absorption, sound insulation, impact resistance, high toughness and the like. The dynamic polymer can be used for preparing damping and buffering materials, anti-impact protection materials, self-repairing materials, toughmaterials, force transducers, etc.

The invention discloses a hybrid cross-linked dynamic polymer. The hybrid cross-linked dynamic polymer contains an inorganic borate bond and common covalent cross-linking formed by a common covalent bond, wherein the cross-linking degree of the common covalent cross-linking in at least one cross-linking network reaches a gel point of the common covalent cross-linking or above. The hybrid cross-linked dynamic polymer integrates the respective advantages of a dynamic covalent bond and the common covalent cross-linking, and polymeric materials of abundant structures and with diversified properties can be prepared by regulating the structures of reactants. The inorganic borate bond in the hybrid cross-linked dynamic polymer has dynamic reversibility, so the polymer has functional characteristics like stimulation responsiveness and exerts toughening, damping and anti-impact effects and other effects on materials in specific structures; and the common covalent cross-linking endows the polymer with certain strength and stability. The dynamic polymer can be used for preparing damping and buffering materials, anti-impact protection materials, tough materials, sealing materials, force transducers, etc.

The invention discloses a combined hybrid cross-linked dynamic polymer, which contains at least one boron-containing dynamic covalent bond, at least one other dynamic covalent bond and an optional hydrogen bond, and contains at least one dynamic covalent cross-linked network, wherein the cross-linking degree of other dynamic covalent bond cross-linking reaches a gel point or above. By introducingthe boron-containing dynamic covalent bonds with different dynamics, other dynamic covalent bonds and optional hydrogen bonds into the combined hybrid cross-linked dynamic polymer, a dynamic polymer material with a wide controllable range, rich structures and various properties can be prepared. The dynamic polymer contains the difference between the boron-containing dynamic covalent bond, the other dynamic covalent bond and the hydrogen bond, so that the polymer can show dynamic reversible effects with orthogonality and synergism under different conditions, and therefore, the polymer shows good self-repairing characteristics and rich stimulus responsiveness. The dynamic polymer can be widely applied as a self-repairing material, a tough material, a sealing material, an interlayer adhesiveand the like.

The invention discloses a physical split phase supramolecular dynamic polymer, which contains a block polymer molecule with hard and soft segments simultaneously. The hard segments of the block polymer molecule can be mutually mixed to and/or independently form crystal phases and/or phases incompatible with the soft segments, thus forming split phase physical crosslinking and/or polymerization based on hard segments, and all the soft segments of the block polymer molecule are amorphous. At least one soft segment of the block polymer molecule contains at least one ligand group, which can form dynamic metal-ligand interaction with a metal center. Moreover, at least one soft segment of the block polymer molecule contains at least one hydrogen bond group with hydrogen bond donor and hydrogen bond receptor simultaneously, and the hydrogen bond group forms a dynamic hydrogen-bond interaction. The dynamic polymer has shape memory function, self-repair function and super-toughness, and has wide application in biomedical materials, military, aerospace, energy, construction and other fields.

The present invention discloses a hybrid dynamic polymer composition, , which at least comprises two components A and B, wherein the component A contains a dynamic polymer, a dynamically exchangeablesiloxane bond and a side hydrogen bond group participate in the formation of the hydrogen bond action of the dynamic polymer, the dynamically exchangeable siloxane bond exists as the polymerization linking point and/or cross-linking point of the dynamic polymer, and is necessary for forming or maintaining the covalent structure of the dynamic polymer, and the component B contains a catalyst and/ora complex thereof for carrying out a siloxane equilibrium reaction. According to the present invention, through the actions of the dynamic covalent bond and the supramolecular hydrogen bond in the dynamic polymer, the polymer can have orthogonal and/or synergistic dynamic reversible effects under different conditions so as to achieve good self-repairing property and rich stimulating responsiveness; and the dynamic polymer can be widely used as a self-healing material, a toughness material, a sealing material, an adhesive and the like.

The invention discloses a dynamic polymer with a hybrid cross-linked structure. The dynamic polymer contains common covalent cross-linking and contains both dynamic covalent inorganic silicon borate bonds and supramolecular hydrogen bonds formed under the condition of participation of side hydrogen bond groups, wherein the cross-linking degree of the common covalent cross-linking reaches a gel point of the common covalent cross-linking or above. According to the dynamic polymer, the dynamic covalent inorganic silicon borate bonds and the supramolecular hydrogen bonds are conjugated, so the dynamic polymer has good dynamic reversibility and presents t functional characteristics like stimulation responsiveness and self repair performance; common covalent cross-linking endows the polymer withcertain strength and stability; and the existence of the inorganic silicon borate bonds and the hydrogen bonds allows the polymer to have good energy-absorbing effect and to realize toughening and damping of materials in specific structures. The dynamic polymer can be extensively used for preparing damping and buffering materials, shock-resistant protection materials, self-repairing material, tough materials, etc.

The invention discloses a hybrid crosslinked dynamic polymer, which contains metal-ligand interaction and covalent bond formed covalent crosslinking. Specifically, covalent crosslinking reaches the gel point of covalent crosslinking or above in at least one crosslinked network. The dynamic polymer combines the respective advantages of metal-ligand interaction and covalent crosslinking, and throughregulation of the reactant structure, polymer materials with abundant structures and diverse properties can be prepared. The dynamic reversibility of the metal-ligand interaction in the dynamic polymer enables the polymer to show stimulus response and other functional properties, and has self-repair, shape memory, toughening and other effects on the material in a specific structure. And covalentcrosslinking endows the polymer with certain strength and stability. The dynamic polymer can be widely applied as a self-repair material, ductile material, sealing material, shape memory material, force sensor material and the like.

The invention discloses a hybrid crosslinked dynamic polymer, which contains metal-ligand interaction and covalent bond formed covalent crosslinking. Specifically, covalent crosslinking reaches the gel point of covalent crosslinking or above in at least one crosslinked network. The dynamic polymer combines the respective advantages of metal-ligand interaction and covalent crosslinking, and throughregulation of the reactant structure, polymer materials with abundant structures and diverse properties can be prepared. The dynamic reversibility of the metal-ligand interaction in the dynamic polymer enables the polymer to show stimulus response and other functional properties, and has self-repair, shape memory, toughening and other effects on the material in a specific structure. And covalentcrosslinking endows the polymer with certain strength and stability. The dynamic polymer can be widely applied as a self-repair material, ductile material, sealing material, shape memory material, force sensor material and the like.

The invention discloses a combined hybrid dynamic polymer which contains at least one boron-containing dynamic covalent bond, at least one boron-free dynamic covalent bond, at least one non-hydrogen-bond type supramolecular interaction and optional hydrogen bond interaction. According to the combined hybrid dynamic polymer, the dynamic covalent bonds with different dynamic responsibilities and thesupramolecular interaction are introduced, so that a dynamic polymer material with a wide controllable range, a rich structure and various properties can be prepared. By utilizing the difference between the different dynamic covalent bonds and the supramolecular interaction, the combined hybrid dynamic polymer can embody a hierarchical dynamic reversible effect under different conditions, therebyembodying the properties of self-repairability, reusability, stimulus responsiveness and the like. The dynamic polymer can be widely applied as a self-repairing material, a tough material, a sealingmaterial and the like.

The invention discloses a force-induced response dynamic polymer. The polymer chain skeleton contains at least one force-sensitive group and at least one boron-containing dynamic covalent bond; wherein the polymer also optionally contains at least one supramolecular interaction; under the action of mechanical force, the force-sensitive group in the dynamic polymer is subjected to chemical and/or physical change to realize force-induced response. According to the dynamic polymer, the force-sensitive group with a force-induced response characteristic, the boron-containing dynamic covalent bondswith different dynamic properties and the optional supramolecular interaction are introduced, so that the force-induced response dynamic polymer material with a wide controllable range, a rich structure and various properties can be prepared. The force-induced response dynamic polymer can be widely applied as a functional coating with a force-induced response function, a self-repairing material, an energy storage device material, an energy absorbing material, a photoelectric device material, a mechanical probe and the like.

The invention discloses a dynamic polymer with a hybrid cross-linked structure. The dynamic polymer contains common covalent cross-linking and dynamic covalent inorganic silicon borate bonds, whereinthe common covalent cross-linking endows the dynamic polymer with certain strength and stability; and the dynamic covalent inorganic silicon borate bonds have good dynamic reversibility, so the dynamic polymer has the functional characteristics of stimulation responsiveness, self repair performance and the like and especially presents good energy-absorbing effect. The dynamic polymer can be extensively used for preparing damping and buffering materials, shock-resistant protection materials, shape memory materials, self-repairing material, tough materials, etc.

The invention discloses an energy absorption method based on a hybrid cross-linked dynamic polymer. The hybrid cross-linked dynamic polymer contains at least one boron-containing dynamic covalent bond, at least one non-hydrogen-bond type supramolecular interaction and common covalent cross-linking formed by common covalent bonds, wherein the common covalent cross-linking reaches a gel point of thecommon covalent cross-linking or above in at least one cross-linking network. The dynamic polymer combines the respective advantages of the boron-containing dynamic covalent bond, the supramolecularinteraction and the common covalent cross-linking, and has excellent energy dissipation, dispersion, absorption and other characteristics when subjected to physical impact by regulating and controlling the structure of reactants. The dynamic polymer is used as an energy absorbing material to absorb energy, and can play roles in damping, buffering, shock resistance protection, shock absorption, noise elimination, sound insulation and the like.