Hybrid dynamic polymer and applications thereof

A polymer and dynamic technology, applied in the field of polymers, can solve the problems of hard cross-linked polymers, difficult to recycle, chemical cross-linking lack of dynamics, etc., to achieve good toughness, enhanced stability and mechanical properties

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

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Problems solved by technology

However, when only chemical crosslinking is used, if the crosslinking density is low, that is, the chain between crosslinking points is longer or the functionality of crosslinking points is low, the crosslinked polymer tends to be soft and lacks dimensional stability. The mechanical properties are not good; if the cross-linking density is high, that is, the chain between the cross-linking points i...

Method used

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  • Hybrid dynamic polymer and applications thereof
  • Hybrid dynamic polymer and applications thereof
  • Hybrid dynamic polymer and applications thereof

Examples

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preparation example Construction

[0138] A preferred preparation method of a hybrid dynamic polymer swelling agent swelling gel of the present invention includes but is not limited to the following steps: adding each raw material and other raw materials for preparing a hybrid dynamic polymer to a swelling agent and an optional solvent, The sum of the mass fractions of the raw materials for the preparation of the hybrid dynamic polymer is 0.5 to 70%, and the polymerization, coupling, cross-linking or other types of chemical reactions are carried out by the appropriate means, and the solvent is removed according to the needs after the reaction is completed. The hybrid dynamic polymer swelling agent of the present invention swells the gel. The preferred preparation method of another hybrid dynamic polymer swelling agent-swelling gel of the present invention includes but not limited to the following steps: the hybrid dynamic polymer and other raw materials are swollen in a swelling agent and an optional solvent, T...

Embodiment 1

[0195] Preparation of a polynorbornene-based hybrid dynamic polymer plasticizer gel in which supramolecular interactions are based on cyanuric acid derivative pendant groups.

[0196] Cyanuric acid and 6-chloro-1-hexene were kept at a molar ratio of 4:1, dissolved in anhydrous dimethyl sulfoxide, and stirred and reacted at 80°C for 15 hours under the catalysis of potassium carbonate to obtain a hydrogen-bonding group group of olefin monomers 1a. Add compound 1a to toluene, cool the reaction vessel to 5°C, and add cyclopentadiene dropwise with stirring at low temperature, keeping the molar ratio of compound 1a to cyclopentadiene at 10:13. After the dropwise addition, the temperature was raised to reflux temperature and the reaction was continued with stirring to obtain a norbornene derivative 1b containing a hydrogen bond group. Repeat the above steps and replace compound 1a with allyl alcohol to obtain a hydroxyl-containing norbornene derivative 1c. Reaction of 1c with equim...

Embodiment 2

[0201] Preparation of a polyurethane-based hybrid dynamic polymer foam in which supramolecular interactions are based on pendant urea groups and backbone urethane groups.

[0202] Using tert-butyl hypochlorite as an oxidizing agent, the ureazolyl group of compound 2a was oxidized to triazolinedione group to obtain compound 2b. Reaction of compound 5b with indole-5-carbinol affords diol 2c containing one dynamic covalent bond. 2-Amino-1,3-propanediol was reacted with equimolar equivalent of ethyl isocyanate to obtain diol 2d containing pendant urea groups.

[0203]

[0204] The resulting glycol 2c, 2d, polyester diol, glycerol and 2,4-hexamethylene diisocyanate (HDI) are 10:10:10:2 according to 2c, 2d, glycerol, HDI molar ratio: 33 mixed, the mixture is recorded as 100 parts by mass. Then add 50 parts by mass of montmorillonite, 0.2 parts by mass of silicone oil, 1.5 parts by mass of foamable polymer microspheres, 0.1 parts by mass of dibutyltin dilaurate (DBTDL), and 0.1 ...

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Abstract

The present invention discloses a hybrid dynamic polymer, which simultaneously contains a dynamic covalent bond based on a triazolinedione-indole adduct, and a supramolecular hydrogen bond, and further at least contains a cross-linking network, wherein a side hydrogen bond group or a terminal hydrogen bond group participates in the formation of the supramolecular hydrogen bond, and contains the hydrogen bond group being not derived from triazolinedione and indole and the adduct of triazolinedione and indole. According to the present invention, the supramolecular hydrogen bond can make the material have stimulating responsiveness and self-healing property, and the dynamic covalent bond can make the covalently-cross-linked polymer have the structural stability and the mechanical strength under non-catalytic reaction conditions, and further has dynamic reversibility under special reaction conditions, such that the hybrid dynamic polymer has characteristics of self-healing property, recyclability, repeatable processability and the like, and can be widely used in self-healing materials, tough elastomers and other fields through the co-action of the supramolecular hydrogen bond and the dynamic covalent bond.

Description

technical field [0001] The invention relates to the field of polymers, in particular to a hybrid dynamic polymer and its application. Background technique [0002] Crosslinking is a general method for polymers to form a three-dimensional network structure to improve the stability and mechanical properties of polymer materials. Crosslinking can be chemical (covalent) or physical (non-covalent / supramolecular) crosslinking. Because chemical crosslinking is especially helpful to improve the stability and mechanical properties of polymer materials, it occupies a large proportion in polymer crosslinking. However, when only chemical crosslinking is used, if the crosslinking density is low, that is, the chain between crosslinking points is longer or the functionality of crosslinking points is low, the crosslinked polymer tends to be soft and lacks dimensional stability. The mechanical properties are not good; if the cross-linking density is high, that is, the chain between the cro...

Claims

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Application Information

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IPC IPC(8): C08J3/24C08J9/32
CPCC08J3/24C08J3/246C08J9/32C08J2375/06C08J2375/02C08J2367/00C08J2445/00C08J2391/00Y02P20/54
Inventor 不公告发明人
Owner 厦门天策材料科技有限公司
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