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Hybrid dynamic polymer and applications thereof

A polymer and dynamic technology, applied in the field of polymers, can solve the problems of hard cross-linked polymers, difficult to recycle, poor mechanical properties, etc., to achieve enhanced stability and mechanical properties, good overall performance, and good toughness Effect

Active Publication Date: 2019-04-23
厦门逍扬运动科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Examples

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preparation example Construction

[0143] The preferred preparation method of a hybrid dynamic polymer swelling agent swelling gel of the present invention includes but is not limited to the following steps: adding each raw material for preparing the hybrid dynamic polymer and other raw materials to the swelling agent and optional solvent, Make the total mass fraction of each raw material for preparing the hybrid dynamic polymer 0.5-70%, carry out polymerization, coupling, cross-linking or other types of chemical reactions by the appropriate means, and remove the solvent as needed after the reaction, and it is made The hybrid dynamic polymer swelling agent of the present invention swells the gel. The preferred preparation method of another hybrid dynamic polymer swelling agent swelling gel of the present invention includes but not limited to the following steps: swelling the hybrid dynamic polymer and other raw materials in a swelling agent and an optional solvent, The mass fraction of the hybrid dynamic polymer...

Embodiment 1

[0200] A hybrid dynamic polymer plasticizer swelling gel based on polynorbornene was prepared, in which the supramolecular action was based on the side groups of cyanuric acid derivatives.

[0201] Keep the molar ratio of cyanuric acid and 6-chloro-1-hexene 4:1, dissolve them in anhydrous dimethyl sulfoxide, stir and react under the catalysis of potassium carbonate at 80℃ for 15 hours to obtain hydrogen bond groups Group of olefin monomer 1a. Compound 1a was added to toluene, the reaction vessel was cooled to 5°C, and cyclopentadiene was added dropwise with stirring at a low temperature, keeping the molar ratio of compound 1a to cyclopentadiene at 10:13. After the dropping is completed, the temperature is raised to the reflux temperature and the stirring reaction is continued to obtain the norbornene derivative 1b containing the hydrogen bond group. Repeat the above steps to replace compound 1a with allyl alcohol to obtain a hydroxyl-containing norbornene derivative 1c. 1c is r...

Embodiment 2

[0205] Prepare a polyurethane-based hybrid dynamic polymer foam, in which the supramolecular action is based on pendant urea groups and backbone urethane groups.

[0206] 2-amino-1,3-propanediol and an equimolar equivalent of ethyl isocyanate are reacted to obtain a diol 2a containing pendant urea groups.

[0207]

[0208] The resulting diol 2a, 2,4-hexamethylene diisocyanate (HDI), oligoethylene glycol with a hydroxyl group at one end and an azide group at one end, and an oligoethylene glycol with a hydroxyl group at one end and an alkynyl group at one end 1,12-diiodododecane was mixed in a molar ratio of 16:30:7:7:5, and the mixture was recorded as 100 parts by mass. Then add 50 parts by mass of montmorillonite, 0.2 parts by mass of silicone oil, 1.5 parts by mass of foamable polymer microspheres, 0.1 parts by mass of dibutyltin dilaurate (DBTDL), and 0.1 parts by mass of triethylenediamine and mix well, and Cure for 30 minutes at room temperature. Then, it was cured at 80°C fo...

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Abstract

The invention discloses a hybrid dynamic polymer, which simultaneously contains an exchangeable covalent bond based on alkyltriazolium, halogenated alkyl capable of reacting with alkyltriazolium, anda supramolecular hydrogen bond, and further at least contains a cross-linking network. According to the present invention, the supramolecular hydrogen bond can make the material have stimulating responsiveness and self-healing property, and the dynamic covalent bond can make the covalently-cross-linked polymer have the structural stability and the mechanical strength under non-catalytic reaction conditions, and further has dynamic reversibility under special reaction conditions, such that the hybrid dynamic polymer has characteristics of self-healing property, recyclability, repeatable processability and the like, and can be widely used in self-healing materials, tough elastomers and other fields through the co-action of the supramolecular hydrogen bond and the dynamic covalent bond.

Description

Technical field [0001] The invention relates to the field of polymers, in particular to a hybrid dynamic polymer 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) crosslinking or physical (non-covalent / supramolecular) crosslinking. Chemical cross-linking is particularly helpful in improving the stability and mechanical properties of polymer materials, so it occupies a large proportion in polymer cross-linking. However, when only chemical cross-linking is used, if the cross-linking density is low, that is, the chain between the cross-linking points is longer or the cross-linking point functionality is low, the cross-linked polymer is often softer and lacks dimensional stability. The mechanical properties are not good; and if the cross-linking density is higher, that is, the ch...

Claims

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Application Information

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IPC IPC(8): C08J3/24
CPCC08J3/24C08J3/246Y02P20/54
Inventor 不公告发明人
Owner 厦门逍扬运动科技有限公司
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