阅读说明：本技术 一种输电线路用吸能超疏水超疏油防冰涂料及其制备方法 (Energy-absorbing super-hydrophobic super-oleophobic anti-icing coating for power transmission line and preparation method thereof ) 是由 陈�田 尹桂来 周龙武 李唐兵 刘衍 邹阳 龙国华 彭诗怡 于 2021-09-01 设计创作，主要内容包括：本发明公开了一种输电线路用吸能超疏水超疏油防冰涂料及其制备方法,涉及涂料涂层技术领域,包括：氟改性有机硅树脂30-70份、聚四氟乙烯分散液5-30份、纳米二氧化钛1-5份、碳纳米管1-10份、改性氧化铁黑5-20份,硅烷偶联剂0.1-2份、分散剂0.1-1份、流平剂0.1-1份、消泡剂0.1-2份、全氟硅油0.01-0.5份混合制成；本发明的有益效果是一种输电线路用吸能超疏水超疏油防冰涂料具有优良的附着力、防冰性能,用在输电线路杆塔、导线和绝缘子上,能有效减少覆冰导致的电力事故。(The invention discloses an energy-absorbing super-hydrophobic super-oleophobic anti-icing coating for a power transmission line and a preparation method thereof, which relate to the technical field of coating coatings and comprise the following steps: 30-70 parts of fluorine modified organic silicon resin, 5-30 parts of polytetrafluoroethylene dispersion liquid, 1-5 parts of nano titanium dioxide, 1-10 parts of carbon nano tube, 5-20 parts of modified iron oxide black, 0.1-2 parts of silane coupling agent, 0.1-1 part of dispersing agent, 0.1-1 part of flatting agent, 0.1-2 parts of defoaming agent and 0.01-0.5 part of perfluorosilicone oil; the energy-absorbing super-hydrophobic super-oleophobic anti-icing coating for the power transmission line has excellent adhesive force and anti-icing performance, and can effectively reduce power accidents caused by icing when being used on a power transmission line tower, a lead and an insulator.)

1. The energy-absorbing super-hydrophobic super-oleophobic anti-icing coating for the power transmission line is characterized by comprising the following raw materials in parts by weight: 30-70 parts of fluorine modified organic silicon resin, 5-30 parts of polytetrafluoroethylene dispersion liquid, 1-5 parts of nano titanium dioxide, 1-10 parts of carbon nano tube, 5-20 parts of modified iron oxide black, 0.1-2 parts of coupling agent, 0.1-1 part of dispersing agent, 0.1-1 part of flatting agent, 0.1-2 parts of defoaming agent and 0.01-0.5 part of perfluorosilicone oil.

2. The energy-absorbing super-hydrophobic super-oleophobic anti-icing coating for the transmission line according to claim 1, characterized in that the polytetrafluoroethylene dispersion comprises the following raw materials in parts by weight: 20-70 parts of polytetrafluoroethylene powder, 10-30 parts of butyl acetate, 5-15 parts of propylene glycol methyl ether acetate, 1-10 parts of n-hexane and 0.1-1 part of dispersing agent, wherein the particle size of the polytetrafluoroethylene powder is 0.1-10 mu m.

3. The energy-absorbing super-hydrophobic super-oleophobic anti-icing coating for the transmission line according to claim 2, characterized in that the preparation method of the polytetrafluoroethylene dispersion comprises the following steps:

s1, uniformly mixing butyl acetate, propylene glycol monomethyl ether acetate and n-hexane to obtain a mixed solvent;

s2, sequentially adding a dispersing agent and polytetrafluoroethylene powder into the mixed solvent while stirring;

s3, stirring at the speed of 3000r/min 2000-3000r/min for 30-60min, and performing ultrasonic treatment for 30-60min after stirring to obtain the polytetrafluoroethylene dispersion.

4. The energy-absorbing super-hydrophobic and super-oleophobic anti-icing coating for the transmission line according to claim 1, characterized in that the nano titanium dioxide is hydrophobically modified nano titanium dioxide, and the particle size of the nano titanium dioxide is 10-20 nm.

5. The energy-absorbing super-hydrophobic super-oleophobic anti-icing coating for the transmission line according to claim 1, characterized in that the pipe diameter of the carbon nano-tube is 1-2nm, and the pipe length is 4-6 μm.

6. The energy-absorbing super-hydrophobic super-oleophobic anti-icing coating for transmission lines according to claim 1, characterized in that the modified iron oxide black is Fe₃O₄/SiO₂Micro-nano composite particles.

7. The energy-absorbing super-hydrophobic and super-oleophobic anti-icing coating for transmission lines according to claim 1, characterized in that the coupling agent is one or more of 3-aminopropyltrimethoxysilane, 3- (2, 3-epoxypropoxy) propyltrimethoxysilane, gamma- (methoxyacryloyloxy) propyltrimethoxysilane, isopropyltris (dioctylphosphatoxy) titanate, isopropyltriisostearate-teraphthalate, and tetraisopropylbis (dioctylphosphatoxy) titanate.

8. A preparation method of an energy-absorbing super-hydrophobic super-oleophobic anti-icing coating for a power transmission line is characterized by comprising the following steps:

step one, adding nano titanium dioxide, carbon nano tubes and modified iron oxide black into polytetrafluoroethylene dispersion liquid, and stirring at a high speed for 20-40min to prepare mixed liquid;

and step two, sequentially adding the fluorine modified organic silicon resin, the coupling agent, the dispersing agent, the flatting agent, the defoaming agent and the perfluorinated silicone oil into the mixed solution, and stirring for 20-40min to obtain the fluorine modified organic silicon resin.

9. The preparation method of the energy-absorbing super-hydrophobic and super-oleophobic anti-icing coating for the transmission line as claimed in claim 8, wherein in the first step, the coating is stirred at a speed of 1500-; in the second step, stirring is carried out at the speed of 800-.

Technical Field

The invention relates to the technical field of anti-icing coatings, in particular to an energy-absorbing super-hydrophobic super-oleophobic anti-icing coating for a power transmission line and a preparation method of the coating.

Background

Most of power transmission lines in China are directly exposed to the external environment, so that the power transmission lines are very easily affected by extreme weather and threaten the safe and stable operation of a power grid. The power grid is influenced to the greatest extent and the widest range, and belongs to freezing disasters, and ice disasters can cause icing of the power transmission line and even large-range power failure and even breakdown of the power grid.

At present, there are dozens of mature ice melting technologies at home and abroad, and the ice melting technologies can be divided into a natural external force ice melting method, a heating ice melting method and a mechanical ice melting method according to an ice melting principle. However, these methods waste a lot of manpower and material resources and are inefficient in deicing. The anti-icing of the super-hydrophobic coating is a novel anti-icing method which is researched all the time in recent years.

Although there are reports about superhydrophobic coatings in the field of power transmission lines, since the superhydrophobic coating needs to contact some putty in the air, the superhydrophobic performance is lost quickly, so that the superhydrophobic coating cannot be used on a large scale for a long time, and previous reports about the anti-icing of the superhydrophobic coating for the power transmission lines are only in theoretical and laboratory stages and cannot be applied on a large scale on site.

Therefore, a super-hydrophobic material which has good weather resistance and can be applied in a large scale is needed to be used in the anti-icing field of the power transmission line.

Disclosure of Invention

The invention aims to solve at least one of technical problems in the prior art, and provides an energy-absorbing super-hydrophobic super-oleophobic anti-icing coating for a power transmission line and a preparation method thereof, aiming at enabling the coating to have super-hydrophobic and super-oleophobic properties by enabling the coating to have the characteristics of water contact angle larger than 150 degrees, water rolling angle smaller than 10 degrees and oil contact angle larger than 150 degrees, and being capable of withstanding outdoor putty tests and greatly improving outdoor weather resistance of the super-hydrophobic coating.

The technical solution of the invention is as follows:

an energy-absorbing super-hydrophobic super-oleophobic anti-icing coating for a power transmission line comprises the following raw materials in parts by weight: 30-70 parts of fluorine modified organic silicon resin, 5-30 parts of polytetrafluoroethylene dispersion liquid, 1-5 parts of nano titanium dioxide, 1-10 parts of carbon nano tube, 5-20 parts of modified iron oxide black, 0.1-2 parts of coupling agent, 0.1-1 part of dispersing agent, 0.1-1 part of flatting agent, 0.1-2 parts of defoaming agent and 0.01-0.5 part of perfluorosilicone oil.

In a specific embodiment of the present invention, the polytetrafluoroethylene dispersion comprises the following raw materials in parts by weight: 20-70 parts of polytetrafluoroethylene powder, 10-30 parts of butyl acetate, 5-15 parts of propylene glycol methyl ether acetate, 1-10 parts of n-hexane and 0.1-1 part of dispersing agent, wherein the particle size of the polytetrafluoroethylene powder is 0.1-10 mu m.

In a specific embodiment of the present invention, the preparation method of the polytetrafluoroethylene dispersion comprises:

s1, uniformly mixing butyl acetate, propylene glycol monomethyl ether acetate and n-hexane to obtain a mixed solvent;

s2, sequentially adding a dispersing agent and polytetrafluoroethylene powder into the mixed solvent while stirring;

s3, stirring at the speed of 3000r/min 2000-3000r/min for 30-60min, and performing ultrasonic treatment for 30-60min after stirring to obtain the polytetrafluoroethylene dispersion.

According to a specific embodiment of the invention, the nano titanium dioxide is hydrophobically modified nano titanium dioxide, and the particle size of the nano titanium dioxide is 10-20 nm.

In a specific embodiment of the present invention, the carbon nanotube has a tube diameter of 1 to 2nm and a tube length of 4 to 6 μm.

In a specific embodiment of the present invention, the modified iron oxide black is Fe₃O₄/SiO₂Micro-nano composite particles.

In a specific embodiment of the present invention, the coupling agent is one or more of 3-aminopropyltrimethoxysilane, 3- (2, 3-glycidoxy) propyltrimethoxysilane, γ - (methacryloyloxy) propyltrimethoxysilane, isopropyltris (dioctylphosphatoxy) titanate, isopropyltriisostearate, and tetraisopropylbis (dioctylphosphatoxy) titanate.

A preparation method of an energy-absorbing super-hydrophobic super-oleophobic anti-icing coating for a power transmission line comprises the following steps:

step one, adding nano titanium dioxide, carbon nano tubes and modified iron oxide black into polytetrafluoroethylene dispersion liquid, and stirring at a high speed for 20-40min to prepare mixed liquid;

and step two, sequentially adding the fluorine modified organic silicon resin, the coupling agent, the dispersing agent, the flatting agent, the defoaming agent and the perfluorinated silicone oil into the mixed solution, and stirring at medium speed for 20-40min to obtain the fluorine modified organic silicon resin.

In the first step, the mixture is stirred for 30min at the speed of 1500-; in the second step, stirring is carried out for 30min at the speed of 800-.

The invention has at least one of the following beneficial effects:

according to the invention, fluorine modified organic silicon resin is used as main resin, and polytetrafluoroethylene dispersion liquid, nano titanium dioxide, carbon nano tubes, modified iron oxide black, a coupling agent, a dispersing agent, a leveling agent, a defoaming agent and perfluoro silicone oil are added, so that the coating not only has the characteristics of corrosion resistance, moisture resistance, good adhesive force, wear resistance, ultraviolet resistance and the like under the combined action of the components; and the coating has super-hydrophobic and oleophobic and energy-absorbing performances due to the effects of the fluorine modified organic silicon resin, the polytetrafluoroethylene dispersion liquid, the nano titanium dioxide, the carbon nano tube, the modified iron oxide black, the all-fluorine silicone oil and the like, water drops and putty cannot be attached to the surface of the coating due to the super-hydrophobic and oleophobic characteristics of the coating, and the coating has unique energy-absorbing characteristic, so that the surface temperature of the coating is 2-5 ℃ higher than the ambient temperature even if the temperature is below zero ℃ in the presence of illumination, so that the joint of the ice layer and the surface of the coating is easier to melt, and the ice-coating prevention effect is achieved.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.

Example 1

The preparation method of the energy-absorbing super-hydrophobic super-oleophobic anti-icing coating for the power transmission line comprises the following steps:

step one, adding 5 parts of nano titanium dioxide, 5 parts of carbon nano tubes and 10 parts of modified iron oxide black into 22 parts of polytetrafluoroethylene dispersion liquid, stirring at a speed of 1500r/min, and stirring at a high speed for 30min to prepare a mixed liquid;

and step two, adding 57 parts of fluorine modified organic silicon resin, 2 parts of 3-aminopropyltrimethoxysilane, 1 part of dispersing agent 5040, 1 part of flatting agent BYK-300, 1.5 parts of defoaming agent YS-202 defoaming agent and 0.5 part of perfluorinated silicone oil into the mixed solution in sequence, stirring at the speed of 800r/min, and stirring at the medium speed for 30min to obtain the anti-icing coating.

The preparation method of the polytetrafluoroethylene dispersion comprises the following steps:

s1, weighing 60 parts of polytetrafluoroethylene powder, 23 parts of butyl acetate, 12 parts of propylene glycol methyl ether acetate, 4 parts of n-hexane and 50401 parts of dispersing agent for later use; uniformly mixing butyl acetate, propylene glycol methyl ether acetate and n-hexane to obtain a mixed solvent;

s2, adding a dispersing agent 5040 and polytetrafluoroethylene powder into the mixed solvent in sequence while stirring;

and S3, stirring at 3000r/min for 30min at a high speed, and performing ultrasonic treatment for 30min after stirring to obtain the polytetrafluoroethylene dispersion.

Wherein the nano titanium dioxide is hydrophobically modified nano titanium dioxide, and the particle size of the nano titanium dioxide is 10-20 nm.

Wherein the pipe diameter of the carbon nano-tube is 1-2nm, and the pipe length is 4-6 μm.

Wherein the modified iron oxide black is Fe₃O₄/SiO₂Micro-nano composite particles.

Example 2

The preparation method of the energy-absorbing super-hydrophobic super-oleophobic anti-icing coating for the power transmission line comprises the following steps:

step one, adding 3 parts of nano titanium dioxide, 8 parts of carbon nano tubes and 20 parts of modified iron oxide black into 30 parts of polytetrafluoroethylene dispersion liquid, stirring at a speed of 1600r/min, and stirring at a high speed for 30min to prepare a mixed liquid;

and step two, adding 35 parts of fluorine modified organic silicon resin, 1 part of gamma- (methoxy acryloyl oxygen) propyl trimethoxy silane, 0.5 part of dispersing agent 5040, 0.5 part of flatting agent BYK-300, 1.7 parts of defoaming agent YS-202 defoaming agent and 0.3 part of perfluoro silicone oil into the mixed solution in sequence, stirring at the speed of 850r/min, and stirring at the medium speed for 30min to obtain the anti-icing coating.

The preparation method of the polytetrafluoroethylene dispersion comprises the following steps:

s1, weighing 60 parts of polytetrafluoroethylene powder, 25 parts of butyl acetate, 11.5 parts of propylene glycol methyl ether acetate, 3 parts of n-hexane and 50400.5 parts of dispersing agent for later use; uniformly mixing butyl acetate, propylene glycol methyl ether acetate and n-hexane to obtain a mixed solvent;

s2, sequentially adding a dispersing agent and polytetrafluoroethylene powder into the mixed solvent while stirring;

and S3, stirring at 3000r/min for 30min at a high speed, and performing ultrasonic treatment for 30min after stirring to obtain the polytetrafluoroethylene dispersion.

Wherein the nano titanium dioxide is hydrophobically modified nano titanium dioxide, and the particle size of the nano titanium dioxide is 10-20 nm.

Wherein the pipe diameter of the carbon nano-tube is 1-2nm, and the pipe length is 4-6 μm.

Wherein the modified iron oxide black is Fe₃O₄/SiO₂Micro-nano composite particles.

Example 3

The preparation method of the energy-absorbing super-hydrophobic super-oleophobic anti-icing coating for the power transmission line comprises the following steps:

step one, adding 5 parts of nano titanium dioxide, 3 parts of carbon nano tubes and 12 parts of modified iron oxide black into 26 parts of polytetrafluoroethylene dispersion liquid, stirring at a speed of 1700r/min, and stirring at a high speed for 30min to prepare a mixed liquid;

and step two, sequentially adding 50 parts of fluorine modified organic silicon resin, 1 part of 3-aminopropyltrimethoxysilane, 0.5 part of a dispersing agent 5040, 0.5 part of a leveling agent BYK-300, 1.5 parts of a defoaming agent YS-202 defoaming agent and 0.5 part of perfluorinated silicone oil into the mixed solution, stirring at the speed of 900r/min, and stirring at the medium speed for 30min to obtain the anti-icing coating.

The preparation method of the polytetrafluoroethylene dispersion comprises the following steps:

s1, weighing 70 parts of polytetrafluoroethylene powder, 15 parts of butyl acetate, 10 parts of propylene glycol methyl ether acetate, 4 parts of n-hexane and 50401 parts of dispersing agent for later use;

s2, uniformly mixing butyl acetate, propylene glycol monomethyl ether acetate and n-hexane to obtain a mixed solvent;

s3, adding a dispersing agent 5040 and polytetrafluoroethylene powder into the mixed solvent in sequence while stirring;

and S4, stirring at 3000r/min for 30min at a high speed, and performing ultrasonic treatment for 30min after stirring to obtain the polytetrafluoroethylene dispersion.

Wherein the nano titanium dioxide is hydrophobically modified nano titanium dioxide, and the particle size of the nano titanium dioxide is 10-20 nm.

Wherein the pipe diameter of the carbon nano-tube is 1-2nm, and the pipe length is 4-6 μm.

Wherein, theThe modified iron oxide black is Fe₃O₄/SiO₂Micro-nano composite particles.

Example 4

The preparation method of the energy-absorbing super-hydrophobic super-oleophobic anti-icing coating for the power transmission line comprises the following steps:

step one, adding 2 parts of nano titanium dioxide, 2 parts of carbon nano tubes and 8 parts of modified iron oxide black into 15 parts of polytetrafluoroethylene dispersion liquid, stirring at a speed of 1900r/min, and stirring at a high speed for 30min to prepare a mixed liquid;

and step two, adding 45 parts of fluorine modified organic silicon resin, 0.8 part of 3-aminopropyltrimethoxysilane, 0.3 part of a dispersing agent 5040, 0.3 part of a flatting agent BYK-300, 0.6 part of YS-202 defoaming agent and 0.2 part of perfluorinated silicone oil into the mixed solution in sequence, stirring at the speed of 950r/min, and stirring at the medium speed for 30min to obtain the anti-icing coating.

The preparation method of the polytetrafluoroethylene dispersion comprises the following steps:

s1, weighing 50 parts of polytetrafluoroethylene powder, 12 parts of butyl acetate, 8 parts of propylene glycol methyl ether acetate, 2 parts of n-hexane and 50400.8 parts of a dispersing agent for later use; uniformly mixing butyl acetate, propylene glycol methyl ether acetate and n-hexane to obtain a mixed solvent;

s2, adding a dispersing agent 5040 and polytetrafluoroethylene powder into the mixed solvent in sequence while stirring;

and S3, stirring at 3000r/min for 30min at a high speed, and performing ultrasonic treatment for 30min after stirring to obtain the polytetrafluoroethylene dispersion.

Wherein the nano titanium dioxide is hydrophobically modified nano titanium dioxide, and the particle size of the nano titanium dioxide is 10-20 nm.

Wherein the pipe diameter of the carbon nano-tube is 1-2nm, and the pipe length is 4-6 μm.

Wherein the modified iron oxide black is Fe₃O₄/SiO₂Micro-nano composite particles.

Example 5

The preparation method of the energy-absorbing super-hydrophobic super-oleophobic anti-icing coating for the power transmission line comprises the following steps:

step one, adding 1 part of nano titanium dioxide, 1 part of carbon nano tube and 5 parts of modified iron oxide black into 70 parts of polytetrafluoroethylene dispersion liquid, stirring at a speed of 2000r/min, and stirring at a high speed for 30min to prepare a mixed liquid;

and step two, sequentially adding 30 parts of fluorine modified organic silicon resin, 1.5 parts of 3-aminopropyltrimethoxysilane, 1 part of dispersing agent 5040, 0.7 part of flatting agent BYK-300, 0.7 part of YS-202 defoaming agent and 0.5 part of perfluorinated silicone oil into the mixed solution, stirring at the speed of 1000r/min, and stirring at the medium speed for 30min to obtain the anti-icing coating.

The preparation method of the polytetrafluoroethylene dispersion comprises the following steps:

s1, weighing 30 parts of polytetrafluoroethylene powder, 10 parts of butyl acetate, 5 parts of propylene glycol methyl ether acetate, 1 part of n-hexane and 0.1 part of dispersing agent for later use; uniformly mixing butyl acetate, propylene glycol methyl ether acetate and n-hexane to obtain a mixed solvent;

s2, adding a dispersing agent 5040 and polytetrafluoroethylene powder into the mixed solvent in sequence while stirring;

and S3, stirring at 3000r/min for 30min at a high speed, and performing ultrasonic treatment for 30min after stirring to obtain the polytetrafluoroethylene dispersion.

Wherein the nano titanium dioxide is hydrophobically modified nano titanium dioxide, and the particle size of the nano titanium dioxide is 10-20 nm.

Wherein the pipe diameter of the carbon nano-tube is 1-2nm, and the pipe length is 4-6 μm.

Wherein the modified iron oxide black is Fe₃O₄/SiO₂Micro-nano composite particles.

Comparative example 1

The difference from example 1 is that: the raw material fluorine modified organic silicon resin is changed into non-modified organic silicon resin, and the raw material polytetrafluoroethylene dispersion liquid is changed into polytetrafluoroethylene powder.

The rest is the same as in example 1.

Comparative example 2

The difference from example 1 is that: raw materials of modified iron oxide black, perfluorinated silicone oil and carbon nano tubes are not added.

The rest is the same as in example 1.

Testing

The samples provided in examples 1-5 and comparative examples 1-2 were tested for their performance, and the results are shown in table 1 below:

table 1 performance testing of the energy-absorbing superhydrophobic superoleophobic anti-icing coatings provided in this example 1-3 was as follows:

as can be seen from table 1, the water contact angle of the coating of the embodiments 1 to 5 is greater than 150 °, the n-dodecane contact angle is greater than 119 °, the water rolling angle is less than 10 °, the adhesion is 1 grade, and the energy-absorbing superhydrophobic superoleophobic anti-icing coating for power transmission lines provided by the embodiments 1 to 5 has aging resistance, wear resistance, chemical reagent resistance and corrosion resistance, has a small icing amount and a high deicing rate, so that the coating formed by the energy-absorbing superhydrophobic superoleophobic anti-icing coating for power transmission lines provided by the embodiments 1 to 5 has a superamphiphobic and anti-icing function, so that the power transmission line using the coating has an obvious delayed icing effect, the icing amount is greatly reduced, and the power transmission line using the coating provided by the invention has an anti-icing function.

Comparing examples 1-5 with comparative example 1 (adopting non-modified organic silicon resin and polytetrafluoroethylene powder) and comparative example 2 (not adding modified iron oxide black, perfluorinated silicone oil and carbon nano tubes), it can be seen that the performances of examples 1-5 are obviously superior to those of comparative examples 1-2, so that whether fluorine modification is performed on organic silicon resin, whether dispersion treatment is performed on polytetrafluoroethylene powder, and whether modified iron oxide black, perfluorinated silicone oil and carbon nano tubes are added can obviously influence the hydrophobic and oleophobic properties of the coating, thereby influencing the anti-icing effect of the coating.

The above are merely characteristic embodiments of the present invention, and do not limit the scope of the present invention in any way. All technical solutions formed by equivalent exchanges or equivalent substitutions fall within the protection scope of the present invention.