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Hybrid dynamic polymer composition and applications thereof

A polymer and composition technology, applied in the field of intelligent polymers, can solve the problems of lack of dynamics in chemical crosslinking, lack of dimensional stability, and inability to change crosslinking

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

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Problems solved by technology

However, when only chemical crosslinking is used, if the crosslinking density is low, that is, the chain between crosslinking points is longer or the functionality of crosslinking points is low, the crosslinked polymer tends to be soft and lacks dimensional stability. The mechanical properties are not good; if the cross-linking density is high, that is, the chain between the cross-linking points is short or the functionality of the cross-linking points is high, it often leads to the cross-linked polymer being hard and brittle, and it is easy to break and fail; and generally The chemical cross-linking lacks dynamics. Once the chemical cross-linking is formed, the cross-linking itself cannot be changed. Not only the properties of the polymer material are fixed, but also it is difficult to recycle.

Method used

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  • Hybrid dynamic polymer composition and applications thereof
  • Hybrid dynamic polymer composition and applications thereof
  • Hybrid dynamic polymer composition and applications thereof

Examples

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preparation example Construction

[0204] A preferred preparation method of a hybrid dynamic polymer composition ionic liquid gel of the present invention includes but not limited to the following steps: each raw material and other raw materials for preparing the hybrid dynamic polymer composition components A and B and other raw materials are added to the ion In the liquid, the sum of the mass fractions of components A and B of the prepared hybrid dynamic polymer composition is 0.5 to 70%, and polymerization, coupling, crosslinking or other types of chemical reactions are carried out by the appropriate means, and the reaction After the end, a hybrid dynamic polymer composition ionic liquid gel is made. A preferred preparation method of another hybrid dynamic polymer composition ionic liquid gel of the present invention includes but not limited to the following steps: the hybrid dynamic polymer composition components A, B and other raw materials are swollen in In the ionic liquid or the solvent containing the i...

Embodiment 1

[0264] Preparation of a polynorbornene-based hybrid dynamic polymer composition plasticizer-swellable gel in which supramolecular interactions are based on pendant cyanuric acid groups.

[0265] Cyanuric acid and 6-chloro-1-hexene were kept at a molar ratio of 4:1, dissolved in anhydrous dimethyl sulfoxide, and stirred and reacted at 80°C for 15 hours under the catalysis of potassium carbonate to obtain a hydrogen-bonding group group of olefin monomers 1a. Add compound 1a to toluene, cool the reaction vessel to 5°C, and add cyclopentadiene dropwise with stirring at low temperature, keeping the molar ratio of compound 1a to cyclopentadiene at 10:13. After the dropwise addition, the temperature was raised to reflux temperature and the reaction was continued with stirring to obtain a norbornene derivative 1b containing a hydrogen bond group.

[0266]

[0267] 30 molar equivalents of norbornene derivative 1b containing hydrogen bonding groups, 65 molar equivalents of norbornen...

Embodiment 2

[0271] A polyacetylene-based hybrid dynamic polymer composition hydrogel with supramolecular interactions based on pendant imidazolinone groups, pendant amide groups, and backbone amide groups was prepared.

[0272] Under nitrogen protection, a certain amount of p-acetylene benzoic acid was dissolved in sodium hydroxide aqueous solution (sodium hydroxide concentration was 10M), keeping the molar ratio of monomer to sodium hydroxide at 2:3. Add catalyst [Rh(cod) at 30°C 2 ] BF 4 aqueous solution, adjust the monomer and catalyst concentrations to 0.5M and 0.0025M, respectively. After 3 hours, the resulting polymer was precipitated in ethanol, dried and dissolved in water again, acidified with hydrochloric acid and centrifuged to obtain poly[(4-carboxyphenyl)acetylene].

[0273] Under anhydrous and oxygen-free conditions, a certain amount of the obtained polymer was dissolved in DMF, and at -60°C, 1-(2-aminoethyl)-2-imidazolidinone with 0.4 molar equivalents of carboxyl groups ...

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Abstract

The present invention discloses a hybrid dynamic polymer composition, which at least comprises two components A and B, wherein the component A is a dynamic polymer, the dynamic polymer at least contains a cross-linking network, and further simultaneously contains an unsaturated carbon-carbon double bond capable of being subjected to an olefin cross translocation double decomposition reaction and ahydrogen bond group capable of forming supramolecular hydrogen bond action, and the component B is a catalyst or a complex thereof for catalyzing the exchange reaction of the dynamic covalent bond inthe component A. According to the present invention, the composition integrates the dynamic covalent properties and the supramolecular dynamic characteristics, wherein the dynamic covalent bond can make the material have structural stability and mechanical strength under non-catalytic reaction conditions, and has dynamic reversibility under catalytic reaction conditions, and the hydrogen bond canmake the material have supramolecular dynamic reversibility and stimuli responsiveness, such that the composition has characteristics of self-healing property, recyclability, repeatable processability and the like, and can be widely used in self-healing materials, toughness materials, thermal insulation materials, shape memory materials, energy storage device materials, toys, toy fillers and thelike through the co-action.

Description

technical field [0001] The invention relates to the field of intelligent polymers, in particular to a hybrid dynamic polymer composition comprising at least two components A and B and its application. Background technique [0002] Crosslinking is a general method for polymers to form a three-dimensional network structure to improve the stability and mechanical properties of polymer materials. Crosslinking can be chemical (covalent) or physical (non-covalent / supramolecular) crosslinking. Because chemical crosslinking is especially helpful to improve the stability and mechanical properties of polymer materials, it occupies a large proportion in polymer crosslinking. However, when only chemical crosslinking is used, if the crosslinking density is low, that is, the chain between crosslinking points is longer or the functionality of crosslinking points is low, the crosslinked polymer tends to be soft and lacks dimensional stability. The mechanical properties are not good; if th...

Claims

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Application Information

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IPC IPC(8): C08J3/075C08L91/00C08L45/00C08K3/04C08F232/08C08F236/02C08F138/00C08F220/14C08F220/36C08G63/682C08G63/91C08J9/32C08G18/76C08G18/73C08G18/66C08G18/62C08G18/48C08G18/32C08J9/08
CPCC08F138/00C08F220/14C08F232/08C08G18/3228C08G18/4825C08G18/6287C08G18/6685C08G18/73C08G18/7614C08G63/6822C08G63/912C08J3/075C08J9/08C08J9/32C08L91/00C08J2201/034C08J2375/04C08J2375/08C08J2349/00C08J2361/24C08J2367/04C08J2333/14C08J2391/00C08J2445/00C08F236/02C08L45/00C08K3/04C08F220/36Y02P20/54
Inventor 不公告发明人
Owner 厦门天策材料科技有限公司
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