Self-repairing solid-state hybrid dynamic polymer and application thereof

A self-healing, polymer technology, applied in the field of smart polymers, can solve problems such as non-recyclability, lack of structural dynamic reversibility in common covalent structures, poor plasticity, etc.

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

AI Technical Summary

Problems solved by technology

Due to the high bond energy of the covalent cross-linking structure, polymer materials based on this type of cross-linking structure usually have relatively good stability and comprehensive mechanical properties, but due to the lack of dynamic reversibility of the ordinary covalent structure, it is impossible to solve the problem. Problems such as crack failure, poor plasticity, difficulty in reprocessing and inability to recycle and reuse cross-linked polymer materials

Method used

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  • Self-repairing solid-state hybrid dynamic polymer and application thereof
  • Self-repairing solid-state hybrid dynamic polymer and application thereof
  • Self-repairing solid-state hybrid dynamic polymer and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0252] In the preparation process of the hybrid dynamic polymer, for the hybrid dynamic polymer with the first network structure, it can utilize at least one compound (I) and at least one compound (II) to participate in the formation of mercapto-Michaelga Forming a bond to obtain a hybrid crosslinked network; or utilizing at least one compound (III), or participating in at least one compound (I) and / or at least one compound (II) to generate a mercapto-Michael addition bond to obtain Hybrid crosslinked network; either utilizing at least one compound (IV), or its combination with compound (II) and / or compound (V). In any combination of the above compounds, one or more compounds (V) can be optionally added to jointly participate in the formation of a cross-linked network. Any one of the compound combinations includes at least one compound containing a hydrogen bond group and / or a compound capable of forming a hydrogen bond group through a reactive group in the compound.

[0253]...

Embodiment 1

[0327] With tetrahydrofuran as solvent and 1,8-diazabicycloundec-7-ene as catalyst, 1,4-benzenedithiol and allyl methacrylate with a molar ratio of 1:2 are passed through Mercapto-Michael addition reaction to obtain diolefin-containing monomer 1. Under the catalysis of triethylamine, the reaction of isobutanol and 3-isothiocyanate group-1-propene in equimolar ratio produces the olefin monomer 2 containing thiocarbamate group.

[0328] Add 50ml of methyl hydrogen-containing silicone oil (molecular weight: 20000) into the three-necked flask, the molar equivalent of 10mol% of the above-mentioned diolefin monomer 1 and 40mol% of the diolefin monomer 2 relative to the side group silicon hydrogen content of the methyl hydrogen-containing silicone oil, and then add 2.0 mL of 1% Pt(dvs)-xylene solution was used as a hydrosilylation catalyst, and the temperature was raised and maintained at 80° C., and reacted for 24 hours under the protection of nitrogen, and a dynamic polymer was obt...

Embodiment 2

[0330] Using tetrahydrofuran as a solvent and hexylamine as a catalyst, diols are prepared by mercapto-Michael addition reaction of equimolar ratio of hydroxyl acrylate and 2-mercaptoethanol; using aqueous sodium hydroxide as a solvent and tetrabutylsulfuric acid Ammonium hydrogen is used as a catalyst, and the epoxy monomer containing a dynamic covalent structure is prepared by stirring and reacting epichlorohydrin with the above diol at 30°C for 3 hours; using hexylamine as a catalyst, the aminoethyl methyl Diamines were prepared by mercapto-Michael addition reaction between acrylate and 2-aminoethanethiol.

[0331] Weigh 4 parts by mass of foaming agent Celogen-OT, 0.5 parts by mass of surfactant Pluronic L-64, and 5 parts by mass of toluene, stir and mix evenly, then add it to 80 parts by mass of the above-mentioned epoxy monomer at a temperature of 65°C With 20 parts by mass of tert-butyl (oxirane-2-ylmethyl) carbamate, after mixing evenly at high speed, add 12 parts by m...

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Abstract

The invention discloses a self-repairing solid-state hybrid dynamic polymer. The self-repairing solid-state hybrid dynamic polymer contains sulfydryl-Michael addition bond dynamic covalent crosslinking and supermolecular hydrogen bond interaction, wherein the sulfydryl-Michael addition bond dynamic covalent crosslinking reaches above a gel point in at least one crosslinking network; sulfydryl-Michael addition bonds are obtained through sulfydryl-Michael addition reaction between sulfydryl groups and electron-deficient conjugate alkenes/enynes; the supermolecular hydrogen bond interaction contains hydrogen bond interaction involving at least one from side hydrogen bond groups, backbone hydrogen bond groups and other end hydrogen bond groups; with dynamic reversibility, the sulfydryl-Michaeladdition bonds and the supermolecular hydrogen bonds endow the self-repairing solid-state hybrid dynamic polymer with good plasticity, self-repairability, repeatability, reusability and recoverability and ensure that the self-repairing solid-state hybrid dynamic polymer can be widely applied to self-repairing materials, flexible materials, shape memory materials, energy storage device materials and the like.

Description

technical field [0001] The invention relates to the field of intelligent polymers, in particular to a self-healing solid-state hybrid dynamic polymer and its application. Background technique [0002] Polymer structures can be classified into linear polymers, branched polymers, and crosslinked polymers according to their geometry. Among them, the macromolecules of linear or branched structure are aggregated into polymers by intermolecular forces. This non-crosslinked structural feature endows them with good solubility and processability. However, solvent resistance is often encountered during the use of materials. Poor, poor heat resistance, poor mechanical properties and other issues. In order to obtain more stable material properties, it is usually necessary to transform components such as polymers into a three-dimensional crosslinked network structure through physical crosslinking or chemical crosslinking. Physically cross-linked polymers are generally formed by cross-l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/24
CPCC08J3/24C08J3/246
Inventor 不公告发明人
Owner 厦门天策材料科技有限公司
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