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Thixotropic organic small molecule gel and preparation method thereof

A technology of small molecule gel and molecular gel factor, which is applied in the field of supramolecular chemistry to achieve the effect of simple process, low cost and wide application prospect.

Inactive Publication Date: 2017-11-17
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Triurea-based gelling factors that can form thixotropic small organic molecule gels have not been reported yet

Method used

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  • Thixotropic organic small molecule gel and preparation method thereof
  • Thixotropic organic small molecule gel and preparation method thereof
  • Thixotropic organic small molecule gel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 0.04g of small organic molecule gelling factor to 1.96g of JP-10, heat until the gelling factor is completely dissolved, let stand and cool to room temperature, and form a translucent gel. The gelling factor is a s-triazinetrione derivative with three alkylureidophenyl groups (n=16).

[0021] The rheological properties of the above-mentioned JP-10 gel were tested using a flat fixture with a distance of 1.0 mm and a shear rate ranging from 0.01 to 100 s -1 , whose rheological curve is as figure 1 shown.

[0022] It can be seen from the figure that the prepared JP-10 gel has good thixotropy. With the increase of shear rate, the viscosity of the gel system decreased rapidly; after the shear force was removed, the gel structure gradually recovered.

[0023] The JP-10 gel was sheared at high speed (500s -1 ) after breaking the ring, then shear at a low speed (0.1s -1 ) under recovery for a certain period of time, the results of its shear viscosity η with time t are ...

Embodiment 2

[0026] Add 0.06g of organic small molecule gelling factor to 1.94g of JP-10, heat until the gelling factor is completely dissolved, let it stand and cool to room temperature, and form a translucent gel, whose rheological curve is as follows image 3 shown. The gelling factor is a s-triazinetrione derivative with three alkylureidophenyl groups (n=18).

[0027] image 3 It shows that JP-10 gel has good thixotropy. After the gel is broken by high-speed shear, it recovers under low-speed shear, and its shear viscosity η changes with time t as follows: Figure 4 shown.

[0028] From Figure 4 It can be seen from the figure that after the JP-10 gel is destroyed, about 55% of the structure can be recovered within 50s. This destruction-recovery process can also be performed multiple times.

Embodiment 3

[0030] Add 0.17g of organic small molecule gelling factor to 1.83g of toluene, heat until the gelling factor is completely dissolved, and let stand to cool to room temperature to form a colorless transparent gel. The gelling factor is a s-triazinetrione derivative with three alkylureidophenyl groups (n=8).

[0031] After the gel is destroyed by external force, it forms a flowable liquid, and after standing still, it can form a gel again. This process can be repeated multiple times.

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Abstract

The invention discloses a thixotropic organic small molecule gel and a preparation method thereof. The preparation method comprises: adding a novel sym-triazine triketone derivative having three alkylureidophenyl groups and used as an organic small molecule gel factor to a target organic solvent at a mass concentration of 0.6-10%, carrying out heating dissolving, and cooling to achieve a room so as to form the thixotropic gel using the target organic solvent as the main component. According to the present invention, the small molecule gel factor has characteristics of simple synthesis and wide application, and can make JP-10, RP-3 and other high-density hydrocarbon fuels, benzene, xylene, tetrahydrofuran, N,N-dimethylformamide (DMF) and a variety of organic solvents form thixotropic gels, and the gel material preparation method has advantages of simple process, low cost and wide application prospect, and is suitable for batch-scale preparation.

Description

technical field [0001] The invention belongs to the technical field of supramolecular chemistry and relates to a thixotropic organic small molecule gel, in particular to a novel organic small molecule gel factor of s-triazinetrione derivatives with three alkylureido phenyl groups. Background technique [0002] Different from the traditional three-dimensional network structure polymer or biogel formed by covalent cross-linking, organic small molecule gels are generally composed of a small amount of organic small molecule gelling factors through intermolecular non-covalent interaction. The action (hydrogen bond force, electrostatic force, van der Waals force and π-π interaction, etc.) fixes a large number of organic solvent molecules or water molecules in the gel network, making the system form a jelly-like structure. Organic small molecule gels are thermally reversible and sensitive to changes in the external environment. Thixotropic organic small molecule gels will become li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D251/30
CPCC07D251/30
Inventor 金凤邱贤平韦伟陈克海鲁统洁
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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