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Hybrid crosslinked dynamic polymer

A hybrid cross-linking and polymer technology, applied in the field of smart polymers, can solve the problems of dynamic reversible effect and limited control ability, inability to combine structure and dynamic, single and so on.

Inactive Publication Date: 2019-01-15
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] The cross-linked polymers commonly used at present are often composed of a single covalent bond or a single dynamic bond, and it is not possible to organically combine structural and dynamic properties in the polymer, and its dynamic properties are reversible. The effect and control ability are also very limited

Method used

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preparation example Construction

[0210] In the preparation process of dynamic polymer, three methods of mechanical foaming method, physical foaming method and chemical foaming method are mainly used to foam dynamic polymer.

[0211] 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.

[0212] 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 ...

Embodiment 1

[0273] Add 100 parts by mass of toluene, 36 parts by mass of 3-buten-1-alcohol, 10.5 parts by mass of acrylamide calix [5] arene (made by reacting 4-amino-calix [5] arene with acryloyl chloride) in No. 1 reactor obtained), 3 parts by mass of acrylamide-1-adamantane (made by the reaction of 1-aminoadamantane and acryloyl chloride), 1 part by mass of azobisisobutyronitrile, 0.5 parts by mass of tetramethylethylenediamine (TEMED) , stir and mix evenly, heat up to 80°C, after reacting for 2 hours, add 43 parts by mass of toluene diisocyanate (TDI), continue to react for 2 hours, remove the solvent, and wash as much as possible with deionized water, then put the product in 100 parts by mass of deionized In water, swell at room temperature for 12 hours to obtain a dynamic polymer hydrogel. It was made into a dumbbell-shaped sample with a size of 80.0×10.0×2.0mm, and a tensile test was carried out using a tensile testing machine. The tensile rate was 50mm / min, and the measured tensil...

Embodiment 2

[0275] Add 3.8 parts by mass of anisaldehyde and 2.3 parts by mass of aniline into reactor No. 1, dissolve them together in 250 parts by mass of methanol, and heat to reflux for 12 hours under a nitrogen atmosphere. Then add 1.5 parts by mass of NaBH 4 And continue to stir at room temperature for 12h, then add 10 parts by mass of 2mol / L hydrochloric acid solution, stir for 10min, then add NH 4 PF 6 Saturated aqueous solution, after filtering, wash the precipitate with deionized water to obtain a white solid guest cross-linking agent; add 42 parts by mass of methyl acrylate, 18 parts by mass of 3-butene-2-alcohol, 5 parts by mass of 4-acrylamide benzo-18-crown ether-6, 6 parts by mass of (butylamino)-N-prop-2-enyl formamide, 0.12 parts by mass of dibenzoyl peroxide (BPO), 0.12 parts by mass of N,N-xylidine, 4.6 parts by mass of guest cross-linking agent, 150 parts by mass of DMF, stirred and reacted at room temperature for 1 h, then added 50 parts by mass of dimethyl sulfoxid...

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Abstract

The invention relates to a hybrid crosslinked dynamic polymer, which contains host-guest interaction, covalent bond formed covalent crosslinking and optional other supramolecular interactions. Specifically, covalent crosslinking reaches the gel point of covalent crosslinking or above in at least one crosslinked network, and the other supramolecular interactions are at least selected from ion interaction, metallophilic interaction, dipole-dipole interaction, hydrogen bond interaction, cation-pi interaction, anion-pi interaction, benzene-fluorobenzene interaction, pi-pi stacking interaction, ionhydrogen bond interaction, hydrogen bond interaction, metal-ligand interaction, and radical cation dimerization. As host-guest interaction has the advantages of molecular recognition, stable action effect and the like, the dynamic polymer has self-repairability and good toughness, and covalent crosslinking endows the polymer with certain strength and stability. The dynamic polymer can be used formaking self-repair materials, sealing materials, tough materials, adhesives, shape memory materials and force sensor materials.

Description

Technical field: [0001] The invention relates to the field of intelligent polymers, in particular to a hybrid cross-linked dynamic polymer composed of covalent bonds and host-guest interactions. Background technique: [0002] Crosslinking is a general method for materials such as polymers to form a three-dimensional network structure to achieve effects such as elastomers, thermosetting plastics, and improvement of polymer thermal stability and mechanical properties. Crosslinking can be chemical (covalent) crosslinking or physical (non-covalent / supramolecular) crosslinking. Because chemical crosslinking is especially helpful to improve polymer thermal stability, mechanical properties, dimensional stability, etc., it occupies a large proportion in polymer crosslinking. However, when only chemical covalent crosslinking is used, it is also difficult to reflect the responsiveness and dynamics to the outside world, and it is difficult to meet the development needs of materials in...

Claims

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Application Information

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IPC IPC(8): C08G18/62C08F210/14C08F216/04C08F220/14C08F220/58C08F255/08C08F265/10C08G18/63C08J3/075C08K3/22C09J133/08C08F220/54C08F220/60
CPCC08F210/14C08F216/04C08F220/14C08F220/58C08F255/08C08F265/10C08G18/6212C08G18/633C08J3/075C08J2375/04C08K3/22C08K2003/2275C08K2201/011C09J133/08C08F220/54C08F220/60C08F220/56
Inventor 不公告发明人
Owner 厦门天策材料科技有限公司
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