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Combined hybrid dynamic polymer and application thereof

A polymer and dynamic technology, applied in the field of smart materials, can solve the problems of limited dynamic effect and dynamic control ability, difficulty in synergistic orthogonal comprehensive performance, etc.

Pending Publication Date: 2020-04-21
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

[0004] With the further expansion and deepening of the research, the types of dynamic covalent bonds are becoming more and more abundant, but the current research on dynamic polymers basically stays in a single dynamic covalent bond system. The effect and dynamic control ability are limited, and it is difficult to have synergistic orthogonal comprehensive performance. In order to obtain dynamic polymers with diversity and synergistic orthogonal dynamics, it is necessary to develop a new type of combinatorial hybrid dynamic polymer to solve this problem.

Method used

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  • Combined hybrid dynamic polymer and application thereof
  • Combined hybrid dynamic polymer and application thereof
  • Combined hybrid dynamic polymer and application thereof

Examples

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preparation example Construction

[0578] In the preparation process of dynamic polymer foam materials, three methods of mechanical foaming, physical foaming and chemical foaming are mainly used to foam dynamic polymers.

[0579] Among them, the mechanical foaming method is to introduce a large amount of air or other gases into the emulsion, suspension or solution of the polymer with the help of strong stirring during the preparation of the dynamic polymer to make it a uniform foam, and then through physical Or chemical changes make it shape and become a foam material. In order to shorten the molding cycle, air can be introduced and emulsifiers or surfactants can be added.

[0580] Wherein, the physical foaming method is to use physical principles to realize the foaming of the polymer during the preparation of the dynamic polymer, which includes but not limited to the following methods: (1) inert gas foaming method, that is, after adding Press the inert gas into the molten polymer or pasty material under press...

Embodiment 1

[0603] Using dimethylformamide (DMF) as a solvent, controlling the molar ratio of 4-chloro-1-butene to sodium diselenide to be 2:1, reacting at 22°C for 24h under nitrogen protection conditions to obtain diselenium bond-containing Diene compound (a). Using 5-hexenylboronic acid and 3-(allyloxy)-1,2-propanediol as raw materials and triethylamine as a catalyst, the diene compound (b) is prepared through condensation reaction at 80°C. React 4-(4-iodo-2,3,5,6-tetrafluorophenoxy)butyl-1-ol with 4-pentenoyl chloride under the catalysis of triethylamine to obtain Alkene-containing compound (c). Using equimolar amounts of ethyl acrylate-2-isocyanate and hydroxyethyl acrylate as raw materials, using triethylamine as a catalyst, react in dichloromethane solvent to prepare diolefins containing carbamate groups in the chain Compound (d).

[0604]

[0605] Using Pt(dvs)-xylene solution as a catalyst, 1 molar equivalent of dimethyl-terminated hydrogen silicone oil (molecular weight is...

Embodiment 2

[0608] Using vinyl boronic acid and hydrogen-terminated silicone oil with a viscosity of about 3,000mPa·s as raw materials, boric acid-terminated silicone oil was prepared by hydrosilylation under the catalysis of platinum olefin complex Pt(dvs).

[0609] The amino-terminated silicone oil with a viscosity of about 2,000 mPa·s is used as a raw material, and reacted in the presence of an equimolar equivalent catalyst, triethyl orthoacetate, to obtain amidine-terminated silicone oil.

[0610] In a dry and clean three-necked flask, add 120ml of anhydrous toluene solvent successively, add 0.02mol of boric acid-terminated silicone oil, 0.02mol of pentaerythritol, 0.02mol of amidine-terminated silicone oil, 0.02mol of 3-[(2-carboxyethyl-di Methyl-silyl)oxy-dimethyl-silyl]propionic acid, add appropriate amount of triethylamine and tetramethylammonium hydroxide, continue to react at 80°C for 5h, and obtain light yellow transparent viscous sample , which can be applied as a self-healing...

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Abstract

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.

Description

technical field [0001] The invention relates to the field of intelligent materials, in particular to a combined hybrid dynamic polymer composed of boron-containing dynamic covalent bonds, boron-free dynamic covalent bonds and non-hydrogen bond-type supramolecular interactions. Background technique [0002] Smart materials, also known as sensitive materials or stimuli-responsive materials, are new materials that can perceive, diagnose, respond to external stimuli, and have functional execution capabilities. It blurs the gap between traditional structural materials and functional materials. The boundary of the structure realizes the functionalization, intelligence and diversification of the structure. It is precisely because of the connotation and characteristics of smart materials that smart materials have quickly attracted the interest of a large number of scientists, and have developed into the fourth generation of materials after natural materials, synthetic polymer materi...

Claims

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Application Information

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IPC IPC(8): C08J3/24C08G83/00
CPCC08J3/24C08J3/246C08G83/008
Inventor 不公告发明人
Owner 厦门天策材料科技有限公司
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