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Preparation and application of pynamic polymer containing composite dynamic covalent bonds

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

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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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  • Preparation and application of pynamic polymer containing composite dynamic covalent bonds
  • Preparation and application of pynamic polymer containing composite dynamic covalent bonds
  • Preparation and application of pynamic polymer containing composite dynamic covalent bonds

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[0466] The invention provides a method for preparing a dynamic polymer containing combined dynamic covalent bonds. The dynamic polymer has a linear or cyclic structure, and it is preferably prepared by at least one of the following methods (but this The invention is not limited thereto):

[0467] The first one is obtained by at least the following components participating in the reaction to generate a dynamic covalent bond: at least one inorganic boron compound (I), at least two hydroxyl-containing compounds (selected from compound (II) to compound (VII), the same below) ); wherein, both the inorganic boron compound (I) and the hydroxyl-containing compound contain at most two functional groups;

[0468] 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 inorganic boron compound (I), at least two hydroxyl-containing compounds; or at least one inorganic boron ...

Embodiment 1

[0571] Add 25g boric acid, 61g 1,1,3,3,5,5,7,7-octamethyl-1,7-tetrasiloxanediol, 32g 3,3'-oxybis (Propane-1,2-diol), 150mL toluene solvent, 2mL deionized water, after heating the reaction solution to boiling, add 2.5mL triethylamine, and continue to stir and react for 2h under boiling conditions. Then add 2.2g sodium dodecylbenzenesulfonate, 0.65g (2-amino-4(18)-pyrimidinone and 1,6-hexamethylene diisocyanate reacted at 100°C), 0.9g bentonite , 0.6g stearic acid, 0.5g oleic acid, then add 2.2g graphene, 0.5g organobentonite, 0.5g polydimethylsiloxane, 0.3g dibutyltin dilaurate, 56mg light stabilizer 770, After ultrasonic dispersion for 40 minutes, continue heating and stirring to mix evenly to obtain a liquid with a certain viscosity. Pour a solution sample with a certain viscosity into a suitable mold, dry the sample in an oven at 80°C for 24 hours to remove the solvent, and then cool it to room temperature for 30 minutes to finally obtain a film-like polymer sample. It was...

Embodiment 2

[0573] In No. 1 reactor, add 25.9 mL of polyol compound (with 4-hydroxystyrene and formaldehyde as raw materials, reflux it with zinc nitrate hexahydrate for 24 hours to synthesize 2-(hydroxymethyl)-4-vinylphenol, and then Using methanol as a solvent and triethylamine as a catalyst, it was prepared by thiol-alkene click addition reaction with pentaerythritol tetramercaptoacetate), 24.5mL of hydroxyl-terminated methylphenyl silicone oil (molecular weight is about 12,000), 20mL of deionized water, 0.5g of carbon nanotubes, 0.2mg of BHT antioxidant, after ultrasonic dispersion for 1 hour, heated to 90°C under stirring; then added 2.57g of metaboric acid, 1.5mL of triethylamine, continued at 90°C After reacting for 60-90 minutes, pour it into a suitable mold, and place the sample in a vacuum oven at 80°C for 24 hours for further reaction, then cool to room temperature and leave it for 30 minutes to finally obtain a block of hard polymer material, polymerized The surface of the obj...

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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 inorganic borate bonds which are at least selected from a group consisting of five-membered ring inorganic borate bonds, five-membered aromatic ring inorganic borate bonds,six-membered ring inorganic borate bonds, six-membered aromatic ring inorganic borate bonds, inorganic monoborate bonds and inorganic silicon borate 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 of the structure of the dynamic polymer. The dynamic polymercan be used for preparing damping and buffering materials, energy-absorbing materials, anti-impact protection 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): C08G79/08C08K13/02C08K5/42C08K5/09C08K3/04C08K3/34C08L85/04C08L83/04C08G77/392C08G77/398C08K7/24C08G81/02C08K3/08C08K3/30
CPCC08G77/392C08G77/398C08G79/08C08G81/025C08K3/08C08K3/30C08K7/24C08L85/04C08G77/80C08K2003/3045C08K2003/0881C08K2201/011C08L83/04C08K13/02C08K5/42C08K5/09C08K3/04C08K3/346Y02E60/10
Inventor 不公告发明人
Owner 厦门天策材料科技有限公司
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