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Flexible physical split-phase supramolecular dynamic polymer and application thereof

A polymer and supramolecular technology, applied in the production of bulk chemicals, etc., to achieve the effect of enhancing large deformation, enhancing energy dissipation, and large deformation

Active 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

At the same time, in order to meet different application requirements, flexible materials with rich and varied properties are required, such as self-healing, impact resistance, shock absorption, foldability, high deformability, biocompatibility, water resistance, etc. And these are difficult to realize in the prior art

Method used

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  • Flexible physical split-phase supramolecular dynamic polymer and application thereof
  • Flexible physical split-phase supramolecular dynamic polymer and application thereof
  • Flexible physical split-phase supramolecular dynamic polymer and application thereof

Examples

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preparation example Construction

[0192] A preferred preparation method of a dynamic polymer ionic liquid gel of the present invention includes but is not limited to the following steps: blending the raw materials for preparing dynamic polymers with ionic liquids, so that the mass fraction of raw materials for preparing dynamic polymers is 0.5- 70%, polymerization, coupling or other types of chemical reactions are carried out through the appropriate means, and after the reaction is completed, a dynamic polymer ionic liquid gel is produced. The preferred preparation method of another dynamic polymer ionic liquid gel of the present invention includes but not limited to the following steps: the raw materials of the block polymer and the metal center are swollen in a solvent containing an ionic liquid, and the The mass fraction of the block polymer is 0.5-70%, and after fully swelling, the solvent is removed to form a dynamic polymer ion liquid gel. The block polymer molecule for preparing the ionic liquid gel is ...

Embodiment 1

[0253] Under the catalysis of dibutyltin dilaurate (DBTDL), diphenylmethane diisocyanate (MDI) and poly-β-hydroxybutyrate (average molecular weight about 3000Da) with equimolar equivalents of one terminal hydroxyl terminated in DMF were reacted to obtain Polyester terminated with isocyanate groups. Add 1 molar equivalent of polydimethylsiloxane (average molecular weight is about 10,000 Da) terminated with hydroxyl groups at both ends to the polyester solution containing 2 molar equivalents of isocyanate groups. After the reaction is complete, poly-β-hydroxybutyric acid is obtained. Ester-polydimethylsiloxane-poly-beta-hydroxybutyrate three-block polymer.

[0254] The obtained polymer and maleic anhydride were dissolved in chlorobenzene so that the initial mass volume concentration of maleic anhydride was 3%. Add benzoyl peroxide at 130°C so that the initial concentration of benzoyl peroxide is 0.2%, and keep the temperature for 6 hours to obtain a three-stage formula of modif...

Embodiment 2

[0258] Under anhydrous and oxygen-free conditions, 1 molar equivalent of azodimethyl N-2-hydroxybutylpropionamide is dissolved in toluene, and 105 molar equivalents of vinyl acetate are added. React for 16 hours at reflux temperature to obtain polyvinyl acetate with hydroxyl groups at both ends. The obtained polyvinyl acetate with hydroxyl groups at both ends is reacted with 2 molar equivalents of 4-pyridazine carboxylic acid under the catalysis of DCC and DMAP to obtain polyvinyl acetate with pyridazine ligand groups at both ends.

[0259] Under anhydrous and oxygen-free conditions, using AIBN as an initiator and elemental iodine as a chain transfer agent, the attenuation chain transfer polymerization of vinyl acetate is initiated to obtain polyvinyl acetate terminated with an iodine atom at one end. The obtained polyvinyl acetate is reacted with polyisobutene terminated by amino groups at both ends to obtain a polyvinyl acetate-polyisobutylene-polyvinyl acetate three-stage p...

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Abstract

The invention discloses a flexible physical split-phase supramolecular dynamic polymer, which contains a flexible block polymer molecule. The flexible block polymer molecule contains at least two blocks capable of forming incompatible soft phases, and at least one of the blocks contains at least one supramolecular interaction group / unit that can form interchain supramolecular crosslinking. The obtained dynamic polymer or the composition thereof has good toughness, energy dissipation, self-repairability and other properties, and has wide application in body protection in sports and daily life and work, military police body protection, explosion protection, airborne landing and airdrop protection, automobile collision prevention, impact protection of electronic materials, self-repair sealingparts, sealants, tough elastomers and other aspects.

Description

technical field [0001] The invention relates to an intelligent material, in particular to a flexible dynamic polymer containing physical phase separation crosslinking and dynamic supramolecular action. Background technique [0002] With the development of science and technology, the development and use of some flexible devices has attracted widespread attention, such as foldable flexible electronic screens and deformable flexible wearable devices. Whether these flexible devices are conceptually realized in the laboratory or mass-produced after industrialization, a large number of flexible materials, such as flexible substrates, flexible substrates, flexible fillers, flexible packaging materials, etc., need to be used. At the same time, in order to meet different application requirements, flexible materials with rich and varied properties are required, such as self-healing, impact resistance, shock absorption, foldability, high deformability, biocompatibility, water resistanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/40C08G18/42C08G18/61C08F283/00C08F222/06C08G63/685C08G83/00C08L51/08C08L87/00C08L67/00C08L31/04C08K3/22
CPCC08F283/006C08G18/4009C08G18/4283C08G18/61C08G63/6856C08G83/008C08L51/08C08L87/005C08K2003/2275C08K2201/011C08L2205/03C08F222/06C08L67/00C08K3/22C08L31/04Y02P20/54
Inventor 不公告发明人
Owner 厦门天策材料科技有限公司
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