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

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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 organ

Method used

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  • Hybrid crosslinked dynamic polymer

Examples

Experimental program
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Example Embodiment

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

[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 by means of strong stirring during the preparation process of the dynamic polymer to make it a uniform foam, and then undergo physical Or chemical changes make it into a foam material. In order to shorten the molding cycle, air and emulsifiers or surfactants can be added.

[0212] Among them, the physical foaming method uses physical principles to achieve polymer foaming during the preparation of dynamic polymers, which includes but is not limited to the following methods: (1) Inert gas foaming method, that is, adding Press the inert gas into the molten polymer or paste material under pressure, and then depressurize and increase the ...

Example Embodiment

[0272] Example 1

[0273] Add 100 parts by mass of toluene, 36 parts by mass of 3-buten-1-ol, and 10.5 parts by mass of acrylamide calix[5] aromatic hydrocarbon into the No. 1 reactor (prepared by reacting 4-amino-calix[5] aromatic hydrocarbon with acryloyl chloride ), 3 parts by mass of acrylamide-1-adamantane (prepared by reacting 1-aminoadamantane and acryloyl chloride), 1 part by mass of azobisisobutyronitrile, 0.5 part by mass of tetramethylethylenediamine (TEMED) , Stir and mix uniformly, warm up to 80°C, add 43 parts by mass of toluene diisocyanate (TDI) after reacting for 2h, remove the solvent after continuing the reaction for 2h, and wash with deionized water as much as possible, then put the product into 100 parts by mass of deionized In water, swell at room temperature for 12 hours to prepare a dynamic polymer hydrogel. It was made into a dumbbell-shaped spline with a size of 80.0×10.0×2.0mm, and the tensile test was carried out with a tensile testing machine. The te...

Example Embodiment

[0274] Example 2

[0275] 3.8 parts by mass of anisaldehyde and 2.3 parts by mass of aniline were added to the No. 1 reactor, dissolved in 250 parts by mass of methanol together, and heated 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 and add NH 4 PF 6 After filtering the saturated aqueous solution and washing the precipitate with deionized water, a white solid guest crosslinking agent is prepared; 42 parts by mass of methyl acrylate, 18 parts by mass of 3-buten-2-ol, 5 parts by mass 4-acrylamide benzo-18-crown-6, 6 parts by mass (butylamino)-N-prop-2-enyl formamide, 0.12 parts by mass 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, after stirring and reacting at room temperature for 1 hour, 50 parts by mass of dimethyl sul...

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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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