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High-adhesion ionic liquid adhesive and preparation method thereof

An ionic liquid and high-adhesive technology, applied in the preparation of sulfonamides, organic chemistry, etc., to achieve the effect of wide source of raw materials, strong operability, and convenient adjustment

Pending Publication Date: 2022-05-13
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the shortcomings of traditional adhesives during use, the present invention provides a high-adhesion ionic liquid adhesive, which improves the bonding strength of the ionic liquid adhesive by introducing urea groups and trimer structures into the cationic structure of conventional ionic liquids , so that the performance of ionic liquid adhesives can meet specific production needs

Method used

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  • High-adhesion ionic liquid adhesive and preparation method thereof
  • High-adhesion ionic liquid adhesive and preparation method thereof
  • High-adhesion ionic liquid adhesive and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A preparation method of a high-adhesion ionic liquid adhesive comprises the following three steps:

[0040] (1) Preparation of urea-based trimer raw materials: Weigh 1 mmol of hexamethylene diisocyanate trimer and 1 mmol of 1-(3-aminopropyl) imidazole and dissolve them in 20 ml of tetrahydrofuran, and keep stirring at room temperature 24 h. After the reaction, the product was obtained in the form of precipitation, which was directly collected and washed with tetrahydrofuran, and vacuum-dried to obtain the trimer raw material containing urea groups, with a yield of 90%.

[0041] (2) Quaternization reaction: Weigh 9 mmol (±)-3-chloro-1, 2-propanediol and 1 mmol of the obtained urea group-containing trimer raw material and dissolve in 20 mL N, N-dimethylformamide Under the condition of continuously feeding inert gas into the flask, the reaction was continuously stirred at 100 °C for 48 h. After the reaction was completed and cooled, the mixed solution was precipitated in...

Embodiment 2

[0045] This example provides a method for preparing a high-adhesion ionic liquid adhesive, which is based on Example 1 by adding the halogenated hydrocarbon "(±)-3-chloro-1,2-propanediol in step (2) ” was replaced by “n-bromobutane”. Refer to Example 1 for other operations and conditions, and the product is named IL-2. The structural formula is:

[0046]

Embodiment 3

[0048] This example provides a method for preparing a high-adhesion ionic liquid adhesive, which is based on Example 1 by adding the halogenated hydrocarbon "(±)-3-chloro-1,2-propanediol in step (2) " was replaced by "2-bromoethyl ethyl ether". Refer to Example 1 for other operations and conditions, and the product is named IL-3. The structural formula is:

[0049]

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Abstract

The invention belongs to the field of adhesives, and particularly relates to a high-adhesion ionic liquid adhesive and a preparation method thereof. The ionic liquid comprises cations and anions, and the cations contain a tripolymer structure with ureido; by introducing ureido on a cation structure of an ionic liquid tripolymer, independent ionic liquid units can be assembled through local hydrogen bonds to form a dynamic physical cross-linked three-dimensional network, and finally, extremely high adhesion can be shown in a macroscopic adhesion performance test; and the physicochemical properties of the ionic liquid adhesive can be selectively regulated and controlled by selecting cationic tripolymers with different terminal group types and matching different types of anions, so that specific production requirements are met.

Description

technical field [0001] The invention belongs to the field of adhesives, and in particular relates to a high-adhesive ionic liquid adhesive and a preparation method thereof. Background technique [0002] Ionic liquids refer to organic molten salts that are liquid near room temperature, and have the characteristics of low volatility, wide electrochemical window, and incombustibility. By changing the composition of ionic liquid anions, cations and substituents, the physical and chemical properties of ionic liquids in the macroscopic state can be artificially adjusted to meet various application requirements, which has broad application prospects in many fields. In recent years, people have realized that the viscosity of ionic liquids, which is 2 to 3 orders of magnitude higher than that of conventional molecular solvents, may be the main reason hindering the further expansion of their application fields. High-viscosity ionic liquids often have problems such as limited material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D403/14C07D401/14C07C311/49C07C303/40
CPCC07D403/14C07D401/14C07C311/49Y02P20/54
Inventor 张世国张俊张妍
Owner HUNAN UNIV
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