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Dynamic polymer having hybrid cross-linking network structure

A network structure, hybrid cross-linking technology, applied in the field of smart polymers, can solve the problems of large thermodynamic influence, weak bond energy, easy to be destroyed, etc.

Pending Publication Date: 2019-04-23
厦门天策材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with traditional covalent bonds, this kind of non-covalent interaction generally has weaker bond energy and is greatly affected by thermodynamics. The formed supramolecular structure is not a stable system to some extent, and it is easy to been destroyed

Method used

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  • Dynamic polymer having hybrid cross-linking network structure
  • Dynamic polymer having hybrid cross-linking network structure
  • Dynamic polymer having hybrid cross-linking network structure

Examples

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preparation example Construction

[0381] The preparation method of a kind of dynamic polymer ionic liquid gel of the present invention, comprises the following steps: the raw material of the dynamic polymer that prepares hybrid cross-linked network is added in ionic liquid, makes the dynamic state of prepared hybrid cross-linked network The mass fraction of the polymer is 0.3-75%, the covalent cross-linking is carried out by the appropriate means, and after the reaction is completed, a dynamic polymer ion liquid gel is prepared. Another method for preparing a dynamic polymer ionic liquid gel of the present invention comprises the following steps: swelling a dynamic polymer having a hybrid cross-linked network structure in a solvent containing an ionic liquid, and making the prepared hybrid cross-link The mass fraction of the dynamic polymer in the network is 0.3-75%, and after fully swelling, the solvent is removed to form a dynamic polymer ion liquid gel. The above-mentioned ionic liquid is generally composed...

Embodiment 1

[0390] First add an appropriate amount of 3,3′-dipropionic acid trithiocarbonate and triphenylphosphine into the reactor, add anhydrous tetrahydrofuran solution of hydroxyethyl acrylate under anaerobic conditions, and then add azobis Toluene solution of ethyl formate, control the molar ratio of 3,3′-dipropionic acid trithiocarbonate to hydroxyethyl acrylate to 1:2, control the reaction temperature at 10°C during the whole process, and the reaction ends after the dropwise addition is completed. A diene compound containing a trithioester group is obtained.

[0391] Add N-isopropylacrylamide with a molar ratio of 15:1 to the reactor and the diene compound containing trithioester group prepared above, with anisole as solvent, azobisisobutyronitrile (AIBN) As an initiator, react at 65°C for 12 hours under anaerobic conditions to obtain a polymer fluid with a certain viscosity; then take 100 parts by mass of the polymer liquid and swell it in 75 parts by mass of epoxy soybean oil an...

Embodiment 2

[0394] Using methanol as a solvent and sodium methoxide as a catalyst, mix mercaptoethanol and 3-chloro-2-chloromethyl-1-propene at a molar ratio of 2:1, and react under heating for 16 hours to obtain Ether-based dihydric alcohols; using tetrahydrofuran as a solvent and triethylamine as a catalyst, react dihydric alcohols containing allyl sulfide groups with acryloyl chloride, and control the reaction temperature at 0-25°C to synthesize allyl sulfide-containing diols. Ether-based diene compounds.

[0395] Under anaerobic conditions, with 1-hydroxycyclohexyl phenyl ketone as photoinitiator and toluene as solvent, under the action of UV light, acrylamide and the above-mentioned diene compound containing allyl sulfide group prepared as The ratio of the amount of substances is 200:16 and the cross-linked copolymerization becomes a hybrid cross-linked dynamic polymer organogel with the first network.

[0396] The material is responsive to light stimulation, has certain self-healin...

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Abstract

The present invention discloses a dynamic polymer having a hybrid cross-linking network structure, wherein the dynamic polymer has dynamic covalent cross-linking and supramolecular hydrogen bond action, the dynamic covalent cross-linking is based on at least a reversible addition cleavage chain transfer dynamic covalent bond, and the side hydrogen bond group existing on the side group and / or the side chain of the polymer chain participates in the formation of the hydrogen bond action contained in the supramolecular hydrogen bond action. According to the present invention, the dynamic polymer integrates the advantages of the dynamic covalent bond and the supramolecular hydrogen bond, wherein the supramolecular hydrogen bond can make the material have stimulating responsiveness, super-toughness and self-healing property, and the dynamic covalent bond can make the dynamic polymer have the structural stability and the mechanical strength, and further has dynamic reversibility, such that the polymer can have characteristics of self-healing property, recyclability, repeatable processability and the like, and can be widely used in the production of self-healing materials, toughness materials, sealing 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 cross-linked network structure. Background technique [0002] While polymer materials bring great wealth to human beings, they also bring some serious environmental problems, such as "white pollution". A large number of waste plastics and rubber and other polymer products not only bring great waste of resources but also affect people's health. Life. With the depletion of fossil energy, environmentally friendly, durable and recyclable polymer materials have attracted widespread attention. To continue the development of polymer materials, we must follow the road of sustainable development. At the same time, due to the improvement of material living conditions, people put forward higher requirements for the performance of materials. Polymer products with general performance can no longer meet people's needs. Nowadays, polymer materials have been d...

Claims

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Application Information

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IPC IPC(8): C08F220/54C08F220/38C08F220/56C08F212/08C08F228/04C08G18/32C08G18/67C08G18/73C08G65/26C08G101/00
CPCC08F220/54C08F212/08C08F220/56C08G18/3228C08G18/6795C08G18/73C08G65/2636C08G2101/00C08F220/38C08F228/04
Inventor 不公告发明人
Owner 厦门天策材料科技有限公司
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