Dynamic polymer containing composite dynamic covalent bonds and application thereof

A dynamic covalent bond and polymer technology, applied in the field of dynamic polymer materials and polymer materials, can solve problems such as difficult comprehensive performance and limited dynamic performance of dynamic covalent bonds

Active Publication Date: 2018-07-31
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

[0003] At present, the types of dynamic covalent bonds discovered are becoming more and more abundant, and there are more and more reports on dynamic polymers formed by dynamic covalent bonds, mainly focusing on the fact that each dynamic polymer contains only one dynamic covalent bond. bonds to provide the dynamic properties of polymers, but due to the limited dynamic properties of a single dynamic covalent bond, it is difficult to form synergistic and orthogonal comprehensive properties

Method used

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  • Dynamic polymer containing composite dynamic covalent bonds and application thereof
  • Dynamic polymer containing composite dynamic covalent bonds and application thereof
  • Dynamic polymer containing composite dynamic covalent bonds and application thereof

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[0432] The present invention provides a method for preparing a dynamic polymer based on combined dynamic covalent bonds. The dynamic polymer has a linear or cyclic structure, which is preferably prepared by at least one of the following methods (but this Invention is not limited to this):

[0433] The first one is obtained by at least the following components participating in the reaction to generate a dynamic covalent bond: at least one organoboron compound (I), at least two hydroxyl-containing compounds (selected from compound I and / or compound II containing organoboron acid groups) And / or compound III and / or compound (IV), the same below); Wherein, organoboron compound (I), hydroxyl-containing compound all contain at most two functional groups;

[0434] The second type is obtained by at least the following components participating in the reaction to generate dynamic covalent bonds and ordinary covalent bonds: at least one organoboron compound (I), at least two hydroxyl-cont...

Embodiment 1

[0537]In No. 1 reactor, add 34g acrylamide-phenylboronic acid-urethane copolymer (using methyl isocyanate, N-(2-hydroxyethyl) acrylamide as raw material reaction to prepare urethane monomer ; Then use AIBN as an initiator to obtain acrylamide, 3-acrylamidophenylboronic acid, and carbamate monomers through free radical polymerization), 300mL deionized water / THF mixed solvent, heat to 50°C for stirring and dissolving , slowly add 3.5g 1,1,3,3,5,5,7,7-octamethyl-1,7-tetrasiloxanediol and 20mL0.3mol / L polyglycerin methanol solution, and add 2g graphene , after ultrasonic dispersion for 40 min, 2.5 mL of triethylamine was added, and the stirring reaction was continued at 50° C. for 2 h. Then add 1.2g sodium dodecylbenzenesulfonate, 0.7g bentonite, 0.5g stearic acid, 0.4g oleic acid, then add 0.4g organic bentonite, 0.3g polydimethylsiloxane, 0.2g Dibutyltin dilaurate and 41 mg of light stabilizer 770 were mixed evenly with heating and stirring to obtain a gray-black liquid with a ...

Embodiment 2

[0539] Add 18.9 mL of polyol compound (using 4-hydroxystyrene and formaldehyde as raw materials, reflux it with zinc nitrate hexahydrate for 24 hours to synthesize 2-(hydroxymethyl)-4-vinylphenol, then Using methanol as a solvent and triethylamine as a catalyst, it is prepared by thiol-alkene click addition reaction with pentaerythritol tetramercaptoacetate), 34mL of 0.2mol / L toluene solution of methylphenyl silicone oil, 1g of 200 The target nanoclay and 0.2mg BHT antioxidant were ultrasonically dispersed for 30min, and then heated to 150°C under stirring; then 3.11g of organoboron compound (propenylboronic acid and 4,6-trithiol is prepared by thiol-ene click reaction), 0.7mL triethylamine, continue to react at 150°C for 40-60min, and then continue to react for 1h under nitrogen protection, then pour it into a suitable mold , and placed the sample in a vacuum oven at 80°C for 24h for further reaction, and then cooled to room temperature for 30min to obtain a block of hard pol...

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Abstract

The invention provides a dynamic polymer containing composite dynamic covalent bonds. The dynamic polymer at least contains two types of dynamic covalent bonds and optional hydrogen bonds, wherein thedynamic covalent bonds are organoborate bonds which are at least selected from a group consisting of cyclic organoborate bonds, monoorganoborate bonds, silicon organoborate bonds and organic boric anhydride bonds; and the dynamic covalent bonds exist as polymeric chain joints and / or cross-linked chain joints for the dynamic polymer and are necessary conditions for the formation or maintenance ofthe structure of the dynamic polymer. The dynamic polymer can be used for preparing damping and buffering materials, anti-impact protection materials, energy-absorbing materials, clad materials, sound-insulation noise-abatement materials, intelligent induction materials, self-repairing materials, tough materials, force transducers, etc.

Description

technical field [0001] The invention relates to the field of dynamic polymer materials, in particular to a polymer material composed of dynamic reversible covalent bonds. Background technique [0002] Covalent dynamic polymers are a new field in polymer science research. Dynamic covalent polymers based on dynamic covalent bonds not only have the molecular structure stability of traditional covalent polymers, but also have the properties of supramolecular polymers under certain conditions. Dynamic reversibility is a new class of smart materials. Compared with the non-covalent interaction of supramolecules, the dynamic covalent bond has stronger bond energy and is less affected by thermodynamics. The formed dynamic polymer has a relatively stable molecular structure, and the dynamic covalent bond combines super The reversibility of molecular non-covalent interactions and the stability of covalent bonds have played an important role in the construction of functional molecules ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G79/08C08L85/04
CPCC08G79/08C08L85/04
Inventor 不公告发明人
Owner 厦门天策材料科技有限公司
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