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Preparation method and application of high-strength anti-icing organogel

An organogel, anti-icing technology, applied in the field of functional polymer materials, can solve the problems of complex preparation process, poor mechanical properties, limited application, etc., and achieves controllable molecular weight, mild and controllable reaction conditions, and gelation time. short effect

Active Publication Date: 2022-06-24
UNIV OF JINAN
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  • Description
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Problems solved by technology

In practical applications, organogels should first have certain mechanical properties to meet the specific needs of different fields, and secondly, their own properties should remain stable for a certain period of time to ensure safety in various complex environments. However, most organic gels The poor mechanical properties of the gel and the complicated preparation process severely limit its application. Therefore, the hydrophobic, low surface energy norbornene-based fluorinated alkyl ester Combining monomers with cross-linking agents and liquid paraffin to design an anti-icing organogel with high mechanical strength has important application value

Method used

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  • Preparation method and application of high-strength anti-icing organogel
  • Preparation method and application of high-strength anti-icing organogel
  • Preparation method and application of high-strength anti-icing organogel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Preparation of fluorine-containing organogels

[0046] Preparation of norbornenyl trifluoroethyl ester:

[0047] Take 5-norbornene-2-carboxylic acid (4.49g), trifluoroethanol (1.65g) and trimethylacetic anhydride (TA) (3.35g) in a 25ml flask, add 10ml of tetrahydrofuran (THF) to dissolve , keep stirring at room temperature and introduce nitrogen gas, then dissolve 4-dimethylaminopyridine (DMAP) (19.54mg) in 2ml THF, add it to the flask, gradually heat up to 60 ℃ and react for 24h, then cool to room temperature to remove the solvent, An appropriate amount of dichloromethane was added, washed three times with saturated NaHCO3 solution, saturated NaCl solution and deionized water respectively, dried and filtered to remove the solvent, and dried at 40°C to obtain a white viscous liquid, namely norbornenyl trifluoroethyl ester, Figure 4 It can be seen that the synthesis was successful.

[0048] Synthesis of Dinorbornenyl Glycol Esters:

[0049]Take 5-norbornene-2-carboxy...

Embodiment 2

[0054] Preparation of fluorine-containing organogels

[0055] Preparation of norbornenyl octafluoropentyl ester:

[0056] Take 5-norbornene-2-carboxylic acid (6.91g), octafluoropentanol (11.37g) and trimethylacetic anhydride (TA) (9.31g) in a 25ml flask, add 10ml of tetrahydrofuran (THF) to make it Dissolve, keep stirring at room temperature and pass nitrogen gas, then dissolve 4-dimethylaminopyridine (DMAP) (59.86mg) in 2ml THF, add it to the flask with a syringe, keep stirring and pass nitrogen gas for 30min, remove nitrogen gas, and gradually heat up to After 60 °C to stabilize the reaction for 24 h, the instrument was removed and cooled to room temperature for rotary evaporation, an appropriate amount of dichloromethane was added, washed three times with saturated NaHCO3 solution, saturated NaCl solution and deionized water respectively, dried and filtered to remove the solvent, and dried at 50 °C. After drying, a white viscous liquid is obtained, namely norbornenyl octaf...

Embodiment 3

[0063] Preparation of fluorine-containing organogels

[0064] Preparation of norbornenyl dodecafluoroheptyl ester:

[0065] Take 5-norbornene-2-carboxylic acid (6.91g), dodecafluoroheptanol (16.27g) and trimethylacetic anhydride (TA) (9.31g) in a 25ml flask, add 10ml of tetrahydrofuran (THF) It was dissolved, kept stirring at room temperature and passed nitrogen, and then 4-dimethylaminopyridine (DMAP) (59.86 mg) was dissolved in 2 ml of THF, added to the flask with a syringe, kept stirring for 30 min, and then the nitrogen was removed, and the temperature was gradually increased. After the reaction was stabilized at 60 °C for 24 h, the instrument was removed and cooled to room temperature for rotary evaporation, an appropriate amount of dichloromethane was added, washed three times with saturated NaHCO3 solution, saturated NaCl solution and deionized water, respectively, dried and filtered to remove the solvent, at 60 °C After drying, a white viscous liquid is obtained, name...

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Abstract

The invention relates to a preparation method and application of high-strength anti-icing organogel, fluorine-containing organogel is prepared through ring-opening metathesis polymerization, the fluorine-containing organogel is cast on a mold, and the organogel is obtained, and belongs to the technical field of functional polymer materials. Norbornene fluorine-containing alkyl ester is used as a monomer, self-made dinorbornene glycol ester is used as a cross-linking agent, liquid paraffin is used as a lubricant, a solution with a certain concentration is prepared and then cast on a mold, fluorine-containing organic gel is prepared through ring-opening metathesis polymerization, and the fluorine-containing organic gel is obtained after standing at room temperature and drying at a certain temperature.

Description

technical field [0001] The invention relates to a preparation method and application of a high-strength anti-icing organic gel, and belongs to the technical field of functional polymer materials. Background technique [0002] Ice formation and accumulation is a serious problem in power lines, aviation, wind turbines, and transportation, causing massive energy losses and accidents. Traditional methods such as mechanical deicing, heating deicing and spraying of deicing agents have a series of problems such as high cost and environmental pollution, while anti-icing materials are relatively easy to remove water droplets before freezing, and the adhesion strength of ice after freezing is relatively high. low and has received extensive attention in recent years. At present, the main research contents are hydrophobic / superhydrophobic surface, sustained-release coating and gel. However, when using hydrophobic / superhydrophobic surfaces and slow-release coating materials for anti-ic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F232/08C08F2/44
CPCC08F232/08C08F2/44
Inventor 李辉宫凯燕晴史大阔冯威李玉新
Owner UNIV OF JINAN
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