A kind of anti-icing lubricating grease and its preparation method and application

A lubricating grease and anti-icing technology, which is applied in the field of anti-icing lubricating grease and its preparation, can solve the problems of easy contamination of the interface lubricating coating, increased ice adhesion strength, and inability to realize self-cleaning, etc., to achieve excellent antifouling , Improving rheology and lubricity, and excellent recoverability

Active Publication Date: 2022-02-22
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the roughness of the superhydrophobic coating increases, once it freezes, the ice adhesion strength increases rapidly; the interfacial lubricating coating is easy to pollute and cannot achieve self-cleaning, so it is difficult to apply in practice; at the same time, the two In the ultra-low temperature environment of -80°C and below, there is a large amount of ice accumulation and it is difficult to remove

Method used

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  • A kind of anti-icing lubricating grease and its preparation method and application
  • A kind of anti-icing lubricating grease and its preparation method and application
  • A kind of anti-icing lubricating grease and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preparation of unmodified grease: (1) Disperse 25g of fatty acid amide sodium salt in 65g of silicone oil, and stir continuously in a water bath at 70°C for 2 hours to obtain a mixed emulsion; (2) Mix 3g of trisodium phosphate antioxidant, 2g of ethyl alcohol Diaminetetraacetic acid tetrabenzylamide antioxidant, 3g naphthenic acid soap and 2g chlorotrifluoroethylene telomer were added to the mixed emulsion, and the water bath was heated to 110°C for 6 hours to obtain unmodified grease.

[0024] Preparation of anti-icing grease: (1) 1g of ST-OUP silica sol with a nanoparticle size of 40-100nm, a solid content of 15%, and a pH value of 4, 4mL of analytically pure ammonia water with a content of 38wt.%, 8mL of deionized water, Disperse 0.6mL TEOS and 0.6mL triethoxyoctylsilane in 80mL absolute ethanol, and stir continuously in a water bath at 50°C for 24 hours to obtain a superhydrophobic and superoleophilic coating; (2) place the superhydrophobic and superoleophilic coatin...

Embodiment 2

[0027] The anti-icing lubricating grease prepared in Example 1 and the traditional lubricating grease were degreased to compare and observe the similarities and differences in the microstructure of the two. The degreasing operation is as follows: evenly spread the grease sample on a thin aluminum sheet with a thickness of 3 μm, then put the aluminum sheet coated with the sample into a beaker filled with petroleum ether, seal it and let it stand for a period of time until the base in the grease The aluminum flakes were removed after the oil was dissolved in petroleum ether. After the sample was sprayed with gold, it was observed under a field emission scanning electron microscope, and the results were as follows: figure 2 shown. in, figure 2(a) is the SEM image of traditional grease, figure 2 (b) is the SEM image of the anti-icing grease. It can be seen from the comparison that the anti-icing grease fiber frame is coated with a large amount of superhydrophobic and supero...

Embodiment 3

[0029] The anti-icing lubricating grease prepared in embodiment 1 is carried out the test of ice adhesion strength when deicing under low temperature and ultra-low temperature environment:

[0030] (1) Low temperature environment at -20°C: use a wire rod roller coating process to evenly coat a thin layer of anti-icing grease on the aluminum alloy surface with a thickness of 3 μm; the test process is as follows image 3 (a) shown.

[0031] (2) Ultra-low temperature environment at -150°C: use a brushing process to evenly coat a layer of anti-icing grease on the surface of the aluminum alloy with a thickness of 0.5mm; the test process is as follows image 3 (b) shown.

[0032] The test results are averaged after multiple tests. In the low temperature environment of -20℃, the ice adhesion strength of the unmodified grease is 21.7KPa when deicing, and the anti-icing grease is 7.6KPa, and the deicing performance is increased by 65.0%. The ice adhesion strength of the anti-icing g...

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Abstract

An anti-icing lubricating grease and its preparation method and application, comprising dispersing nano-silica sol, ammonia water, deionized water, tetraethyl orthosilicate, and a hydrophobic treatment agent in absolute ethanol, and continuously stirring in a water bath, namely The superhydrophobic superoleophilic coating can be obtained; the superhydrophobic superoleophilic coating is placed in an oven to dry, and then the dried block is ground to obtain a superhydrophobic superoleophilic nanoparticle aggregate powder; the superhydrophobic superlipophilic nanoparticle aggregate powder is obtained; Oil nanoparticle powder, unmodified grease and silicone oil are dispersed in an organic diluent, and then ultrasonicated in an ultrasonic cleaner to obtain a uniformly dispersed mixed emulsion; the uniformly dispersed mixed emulsion is placed in an oven to obtain a semi-solid glue After standing still at room temperature to volatilize the residual organic diluent, the modified anti-icing grease can be obtained. The anti-icing lubricating grease coating process of the present invention has low requirements on the substrate, and has no requirements on flat or curved surfaces, and can be formulated and constructed in a large area, which is beneficial to the popularization and application of the anti-icing lubricating grease.

Description

technical field [0001] The invention belongs to the technical field of coating preparation and application, and relates to an anti-icing lubricating grease and a preparation method and application thereof. Background technique [0002] For a long time, the accumulation of ice on solid surfaces has brought a series of serious problems to people's daily life, including interfering with aircraft flight, cutting off power lines, and interfering with the flow field of fan blades. During the flight of the aircraft, ice with a thickness of about 1.2 mm adheres to the surface of the wing, which will reduce the lift force per unit area by 25%; the serious accumulation of ice on the insulation layer of the transmission line will eliminate its electrical insulation, which may threaten the transmission system or The safety of the telecommunication system; the icing of the blades of the wind turbine in the harsh environment will seriously affect the normal operation of the power system, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10M177/00C10N30/06C10N30/02C10N30/08C10N30/10C10N50/10
CPCC10M169/048C10M177/00C10M2227/02C10M2201/105C10M2229/04C10M2207/16C10M2207/122C10M2207/126C10M2211/022C10M2223/041C10M2219/068C10M2201/085C10M2215/08C10M2229/0405
Inventor 张友法徐达余新泉
Owner SOUTHEAST UNIV
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