Water-based low-temperature-resistant anti-icing coating as well as preparation method and application thereof

Abstract

The invention provides a water-based low-temperature-resistant anti-icing coating as well as a preparation method and application thereof, and belongs to the technical field of polymer composite materials. The water-based low-temperature-resistant anti-icing coating comprises a component A and a component B, the component A is prepared from 15 to 30 parts of epoxy resin modified acrylic emulsion, 10 to 25 parts of fluorine modified waterborne polyurethane, 10 to 20 parts of ethylene-vinyl acetate-acrylic acid copolymer, 5 to 15 parts of acrylonitrile-styrene-acrylic acid copolymer, 0.1 to 10 parts of additive and 30 to 60 parts of water; the component B is an isocyanate curing agent; the mass ratio of the component A to the component B is (5-10): 1. According to the invention, the flexible chain segment of the ethylene-vinyl acetate-acrylic acid terpolymer is combined with the low-temperature brittleness resistance of the fluorine-modified polyurethane, so that the elongation at break of the coating still exceeds 200% in an environment of-40 DEG C.

Description

Technical Field

[0001] The present invention relates to the technical field of polymer composite materials, and particularly to an aqueous low-temperature anti-icing coating, a preparation method thereof, and an application thereof. Background Art

[0002] Low-temperature anti-icing coatings have significant application values in key fields such as aerospace, polar equipment, and power facilities. However, the further improvement of their performance still faces three major technical challenges: insufficient tolerance at low temperatures, poor chemical stability, and the singularity of mechanical properties.

[0003] In extremely low-temperature environments (below -40°C), traditional coatings usually encounter problems such as a sharp decline in flexibility and adhesion failure. For example, Chinese Patent Application No. CN201710168938.8 discloses an epoxy resin coating and a preparation method thereof. The coating is composed of two components. The first component includes powder and epoxy resin modified by polyurethane prepolymer, and the second component includes a curing agent. By introducing epoxy resin modified by polyurethane prepolymer, the toughness and strength of the coating are improved to a certain extent. However, the flexibility of the epoxy resin coating is still insufficient in extremely cold low-temperature environments, prone to cracking, and the adhesion also decreases, which severely limits its application scope.

[0004] Based on this, it is very important to provide a coating with good adhesion and anti-icing performance in ultra-low temperature environments. Summary of the Invention

[0005] The purpose of the present invention is to provide an aqueous low-temperature anti-icing coating, a preparation method thereof, and an application thereof, to solve the technical problems that existing aqueous coatings are prone to embrittlement and adhesion decline in extremely low-temperature (-40°C) environments, and cannot maintain water solubility and rapid curing.

[0006] To achieve the above-mentioned invention purpose, the present invention provides the following technical solutions:

[0007] The present invention provides an aqueous low-temperature anti-icing coating, including component A and component B;

[0008] Component A includes:

[0009]

[0010]

[0011] Component B is an isocyanate curing agent;

[0012] The mass ratio of component A to component B is 5-10:1.

[0013] Further, the mass fraction of acrylic acid in the ethylene-vinyl acetate-acrylic copolymer is 5-15%;

[0014] The mass fraction of acrylic acid in the acrylonitrile-styrene-acrylic copolymer is ≥15%.

[0015] Further, the epoxy resin-modified acrylic emulsion includes WS-3048;

[0016] The fluorine-modified waterborne polyurethane includes S-390-C.

[0017] Further, the added auxiliary agents include one or more of a leveling agent, a low-temperature resistant additive, a film-forming auxiliary agent, and a pigment filler;

[0018] The mass ratio of the leveling agent, the low-temperature resistant additive, the film-forming auxiliary agent, and the pigment filler is 0.1-1:1-3:3-8:5-15.

[0019] Further, the leveling agent includes a polyether polyester-modified silicone oxygen alkane;

[0020] The low-temperature resistant additive includes one or more of hydroxyl-terminated polybutadiene, a silane coupling agent, and nano-silica;

[0021] The film-forming auxiliary agent includes propylene glycol methyl ether acetate;

[0022] The pigment filler includes one or more of titanium dioxide, iron oxide, carbon black, calcium carbonate, talc powder, kaolin, and barium sulfate.

[0023] The present invention provides a preparation method of the waterborne low-temperature resistant and anti-icing coating described above, comprising the following steps:

[0024] 1) Mix the epoxy resin-modified acrylic emulsion and the fluorine-modified waterborne polyurethane in water to obtain a mixed emulsion;

[0025] 2) Add the ethylene-vinyl acetate-acrylic copolymer and the acrylonitrile-styrene-acrylic copolymer to the mixed emulsion in sequence for dispersion to obtain a mixed liquid;

[0026] 3) First, pre-mix part of the added auxiliary agents to obtain a pre-dispersed slurry, add the pre-dispersed slurry to the mixed liquid for mixing, and after mixing evenly, add the remaining added auxiliary agents to obtain component A;

[0027] 4) Mix component A and component B to obtain the waterborne low-temperature resistant and anti-icing coating.

[0028] Further, in the step 1), the mixing is carried out under stirring, the temperature of stirring is 10-40°C, the time of stirring is 10-15 min, and the rotation speed of stirring is 300-500 rpm.

[0029] Furthermore, in step 2), the dispersion is carried out during stirring, the stirring speed is 800 - 1000 rpm, and the dispersion time is 30 - 40 min.

[0030] Furthermore, in steps 3) and 4), the mixing is carried out during stirring, the stirring speed is independently 600 - 800 rpm, and the mixing time is independently 20 - 40 min.

[0031] The present invention also provides an application of the described waterborne low-temperature anti-icing coating in a low-temperature environment.

[0032] Advantages of the present invention:

[0033] 1) The waterborne low-temperature anti-icing coating of the present invention adopts a unique formulation design. By introducing fluorine-modified waterborne polyurethane, the enrichment of fluorine elements on the coating surface is achieved, a low surface energy structure is constructed, and the adhesion strength of the ice layer is significantly reduced;

[0034] 2) Through the epoxy resin-modified acrylic emulsion in the present invention, the chemical corrosion resistance of epoxy resin and the flexibility of acrylic acid are skillfully combined; fluorine-modified waterborne polyurethane usually exhibits excellent weather resistance and chemical resistance, reacts with the curing agent of component B to form a cross-linked structure, further enhancing the performance. The plasticizing effect of fluoride and the synergistic effect of the cross-linked network significantly improve the bending toughness of the coating at -40°C; The ethylene-vinyl acetate-acrylic terpolymer not only provides excellent flexibility and low-temperature performance, but also the acrylic component improves its water solubility or hydrophilicity. The combined use of the ethylene-vinyl acetate-acrylic terpolymer and the acrylonitrile-styrene-acrylic copolymer can produce a synergistic effect and still maintain high tensile strength and elongation at break at extremely low temperatures. In terms of additives, the leveling agent, adhesive, low-temperature additive, film-forming aid and pigment filler respectively optimize the workability, adhesion, low-temperature stability, film-forming property and appearance of the coating;

[0035] 3) The present invention adopts a ternary synergistic system of epoxy resin-acrylic emulsion / fluorine-modified polyurethane / terpolymer, designs a polarity matching and phase separation structure at the molecular level, and successfully overcomes the "impossible triangle" problem among low temperature, water solubility and strength; Through the combination of the flexible chain segment of the ethylene-vinyl acetate-acrylic terpolymer and the low-temperature anti-brittleness of the fluorine-modified polyurethane, the coating still maintains an elongation at break of more than 200% at -40°C. Specific embodiments

[0036] The present invention provides a waterborne low-temperature anti-icing coating, comprising component A and component B;

[0037] Component A includes:

[0038]

[0039] The component B is an isocyanate curing agent.

[0040] In the present invention, the mass ratio of component A to component B is 5 to 10:1, preferably 6 to 9:1, and more preferably 7 to 8:1.

[0041] In the present invention, by weight, the content of the epoxy resin-modified acrylic emulsion is preferably 16 to 28 parts, and more preferably 18 to 25 parts.

[0042] In the present invention, the epoxy resin-modified acrylic emulsion is preferably WS-3048.

[0043] In the present invention, the epoxy resin-modified acrylic emulsion is used as the main resin component to enhance the adhesion to the substrate. Since acrylic acid itself does not have film-forming ability, the acrylic emulsion is graft-modified by introducing epoxy resin, and after polymerization, an emulsion with a composite structure is formed. This formed three-dimensional network structure provides extremely high cohesion and adhesion for the coating.

[0044] In the present invention, by weight, the content of the fluorine-modified waterborne polyurethane is preferably 12 to 23 parts, and more preferably 15 to 20 parts.

[0045] In the present invention, the fluorine-modified waterborne polyurethane is preferably S-390-C.

[0046] In the present invention, by weight, the content of the ethylene-vinyl acetate-acrylic acid copolymer is preferably 12 to 18 parts, and more preferably 14 to 16 parts.

[0047] In the present invention, the mass fraction of acrylic acid in the ethylene-vinyl acetate-acrylic acid copolymer is 5 to 15%, preferably 6 to 13%, and more preferably 7 to 12%.

[0048] In the present invention, by weight, the content of the acrylonitrile-styrene-acrylic acid copolymer is preferably 6 to 13 parts, and more preferably 7 to 12 parts.

[0049] In the present invention, the mass fraction of acrylic acid in the acrylonitrile-styrene-acrylic acid copolymer is ≥15%, preferably ≥16%, and more preferably ≥17%.

[0050] In the present invention, by weight, the content of the added auxiliary agent is preferably 0.5 to 9 parts, and more preferably 1 to 8 parts.

[0051] In the present invention, the additive includes one or more of a leveling agent, a low-temperature resistant additive, a film-forming aid, and a pigment filler, preferably one or more of a leveling agent, a film-forming aid, and a pigment filler.

[0052] In the present invention, the mass ratio of the leveling agent, the low-temperature resistant additive, the film-forming aid, and the pigment filler is 0.1-1:1-3:3-8:5-15, preferably 0.3-0.8:1.5-2.5:4-7:7-12, and further preferably 0.5:2:5-6:10.

[0053] In the present invention, the leveling agent is preferably a polyether-polyester modified silicone oxygen alkane;

[0054] The low-temperature resistant additive includes one or more of hydroxyl-terminated polybutadiene, a silane coupling agent, and nano-silica, preferably hydroxyl-terminated polybutadiene and / or a silane coupling agent, and further preferably hydroxyl-terminated polybutadiene;

[0055] The film-forming aid is preferably propylene glycol methyl ether acetate;

[0056] The pigment filler includes one or more of titanium dioxide, iron oxide, carbon black, calcium carbonate, talc powder, kaolin, and barium sulfate, preferably one or more of titanium dioxide, iron oxide, carbon black, calcium carbonate, talc powder, and barium sulfate, and further preferably one or more of titanium dioxide, iron oxide, carbon black, talc powder, and barium sulfate.

[0057] In the present invention, the isocyanate group (-NCO) in the isocyanate curing agent is used to crosslink with active groups such as hydroxyl groups and amino groups in the resin to construct a three-dimensional network structure, thereby significantly improving the hardness, wear resistance, and adhesion of the coating film. In addition, the plasticizing effect of the fluoride is combined with the crosslinked network structure to further enhance the bending toughness at -40°C.

[0058] The present invention provides a preparation method of the waterborne low-temperature resistant and anti-icing coating, comprising the following steps:

[0059] 1) Mix the epoxy resin-modified acrylic emulsion and the fluorine-modified waterborne polyurethane in water to obtain a mixed emulsion;

[0060] 2) Add an ethylene-vinyl acetate-acrylic copolymer and an acrylonitrile-styrene-acrylic copolymer to the mixed emulsion in sequence for dispersion to obtain a mixed liquid;

[0061] 3) First, pre-mix part of the additive to obtain a pre-dispersed slurry, add the pre-dispersed slurry to the mixed liquid for mixing, and after mixing evenly, add the remaining additive to obtain component A;

[0062] 4) Mix component A and component B to obtain the waterborne low-temperature resistant and anti-icing coating.

[0063] In the present invention, part of the added additives are film-forming aids and pigments and fillers, and the remaining added additives are leveling agents and low-temperature resistant additives.

[0064] In the present invention, the purpose of adding the additives in two times is to ensure the full dispersion of the additives, prevent agglomeration, and at the same time control the reaction sequence, optimize the curing process, so as to improve the performance of the final product.

[0065] In the present invention, in step 1), the mixing is carried out with stirring, the temperature of stirring is 10 - 40 °C, preferably 15 - 35 °C, more preferably 20 - 30 °C; the time of stirring is 10 - 15 min, preferably 11 - 14 min, more preferably 12 - 13 min; the rotation speed of stirring is 300 - 500 rpm, preferably 350 - 450 rpm, more preferably 400 rpm.

[0066] In the present invention, in step 2), the dispersion is carried out with stirring, the speed of stirring is 800 - 1000 rpm, preferably 850 - 950 rpm, more preferably 900 rpm; the time of dispersion is 30 - 40 min, preferably 32 - 38 min, more preferably 34 - 36 min.

[0067] In the present invention, in steps 3) and 4), the mixing is carried out with stirring, the rotation speed of stirring is independently 600 - 800 rpm, preferably 650 - 750 rpm, more preferably 700 rpm; the time of mixing is independently 20 - 40 min, preferably 25 - 35 min, more preferably 30 min.

[0068] The present invention also provides an application of the aqueous low-temperature resistant and anti-icing coating in a low-temperature environment.

[0069] The technical solutions provided by the present invention will be described in detail below in conjunction with the embodiments, but they cannot be understood as limiting the protection scope of the present invention.

[0070] The raw materials used in the present invention are all commercially available products without special instructions.

[0071] Example 1

[0072] Mix 20 parts of epoxy resin-modified acrylic emulsion WS-3048 and 15 parts of fluorine-modified waterborne polyurethane S-390-C in 50 parts of water. The mixing is carried out under stirring. The temperature of stirring is 30 °C, the time of stirring is 10 min, and the rotation speed of stirring is 400 rpm to obtain a mixed emulsion. Add 15 parts of ethylene-vinyl acetate-acrylic copolymer (the mass fraction of acrylic acid in the ethylene-vinyl acetate-acrylic copolymer is 15%) and 7 parts of acrylonitrile-styrene-acrylic copolymer (the mass fraction of acrylic acid in the acrylonitrile-styrene-acrylic copolymer is 18%) to the mixed emulsion in sequence and disperse for 35 min. The dispersion is carried out under stirring, and the speed of stirring is 800 rpm to obtain a mixed liquid.

[0073] First, premix 4 parts of propylene glycol methyl ether acetate, 4 parts of titanium dioxide, 2 parts of talc powder and 2 parts of kaolin to obtain a pre-dispersed slurry. Add the pre-dispersed slurry to the mixed liquid and mix at a speed of 800 rpm for 30 min. After mixing evenly, add 0.5 part of polyether-polyester modified silicone and 2 parts of hydroxyl-terminated polybutadiene to obtain Component A.

[0074] Mix Component A and Component B with a mass ratio of 8:1 at a rotation speed of 700 rpm for 25 min to obtain a waterborne low-temperature resistant and anti-icing coating.

[0075] Example 2

[0076] Mix 16 parts of epoxy resin-modified acrylic emulsion WS-3048 and 20 parts of fluorine-modified waterborne polyurethane S-390-C in 55 parts of water. The mixing is carried out under stirring. The temperature of stirring is 30 °C, the time of stirring is 10 min, and the rotation speed of stirring is 400 rpm to obtain a mixed emulsion. Add 10 parts of ethylene-vinyl acetate-acrylic copolymer (the mass fraction of acrylic acid in the ethylene-vinyl acetate-acrylic copolymer is 15%) and 10 parts of acrylonitrile-styrene-acrylic copolymer (the mass fraction of acrylic acid in the acrylonitrile-styrene-acrylic copolymer is 18%) to the mixed emulsion in sequence and disperse for 35 min. The dispersion is carried out under stirring, and the speed of stirring is 800 rpm to obtain a mixed liquid.

[0077] First, premix 7 parts of propylene glycol methyl ether acetate, 2 parts of titanium dioxide, 4 parts of calcium carbonate and 2 parts of talc powder to obtain a pre-dispersed slurry. Add the pre-dispersed slurry to the mixed liquid and mix at a speed of 800 rpm for 30 min. After mixing evenly, add 1 part of polyether-polyester modified silicone and 1.5 parts of hydroxyl-terminated polybutadiene to obtain Component A.

[0078] Mix Component A and Component B with a mass ratio of 10:1 at a rotation speed of 700 rpm for 25 min to obtain a waterborne low-temperature resistant and anti-icing coating.

[0079] Example 3

[0080] Mix 30 parts of epoxy resin modified acrylic emulsion WS - 3048 and 10 parts of fluorine modified waterborne polyurethane S - 390 - C in 50 parts of water. The mixing is carried out with stirring. The temperature of stirring is 30 °C, the time of stirring is 10 min, and the rotation speed of stirring is 400 rpm to obtain a mixed emulsion. Add 18 parts of ethylene - vinyl acetate - acrylic copolymer (the mass fraction of acrylic acid in the ethylene - vinyl acetate - acrylic copolymer is 15%) and 12 parts of acrylonitrile - styrene - acrylic copolymer (the mass fraction of acrylic acid in the acrylonitrile - styrene - acrylic copolymer is 18%) to the mixed emulsion in sequence and disperse for 35 min. The dispersion is carried out with stirring, and the speed of stirring is 800 rpm to obtain a mixed liquid.

[0081] First, premix 6 parts of propylene glycol methyl ether acetate, 4 parts of titanium dioxide, 2 parts of talc powder and 2 parts of kaolin to obtain a pre - dispersed slurry. Add the pre - dispersed slurry to the mixed liquid and mix at a speed of 800 rpm for 30 min. After mixing evenly, add 0.7 part of polyether polyester modified silicone and 2 parts of silane coupling agent to obtain Component A.

[0082] Mix Component A and Component B with a mass ratio of 8:1 at a rotation speed of 700 rpm for 25 min to obtain a water - borne low - temperature resistant and anti - icing coating.

[0083] Example 4

[0084] Mix 25 parts of epoxy resin modified acrylic emulsion WS - 3048 and 10 parts of fluorine modified waterborne polyurethane S - 390 - C in 45 parts of water. The mixing is carried out with stirring. The temperature of stirring is 30 °C, the time of stirring is 10 min, and the rotation speed of stirring is 350 rpm to obtain a mixed emulsion. Add 20 parts of ethylene - vinyl acetate - acrylic copolymer (the mass fraction of acrylic acid in the ethylene - vinyl acetate - acrylic copolymer is 15%) and 5 parts of acrylonitrile - styrene - acrylic copolymer (the mass fraction of acrylic acid in the acrylonitrile - styrene - acrylic copolymer is 18%) to the mixed emulsion in sequence and disperse for 40 min. The dispersion is carried out with stirring, and the speed of stirring is 1000 rpm to obtain a mixed liquid.

[0085] First, premix 7 parts of propylene glycol methyl ether acetate, 3 parts of titanium dioxide, 2 parts of talc powder and 3 parts of kaolin to obtain a pre - dispersed slurry. Add the pre - dispersed slurry to the mixed liquid and mix at a speed of 900 rpm for 25 min. After mixing evenly, add 0.7 part of polyether polyester modified silicone and 1.5 parts of nano - silica to obtain Component A.

[0086] Mix Component A and Component B with a mass ratio of 8:1 at a rotation speed of 700 rpm for 25 min to obtain a water - borne low - temperature resistant and anti - icing coating.

[0087] Example 5

[0088] Compared with Example 1, the difference is that the mass ratio of Component A to Component B in Example 5 is 5:1.

[0089] Example 6

[0090] Compared with Example 1, the difference is that the mass ratio of Component A to Component B in Example 5 is 12:1.

[0091] Comparative Example 1

[0092] Compared with Example 1, ethylene-vinyl acetate-acrylic copolymer was not added in Comparative Example 1.

[0093] Comparative Example 2

[0094] Compared with Example 1, acrylonitrile-styrene-acrylic copolymer was not added in Comparative Example 2.

[0095] Comparative Example 3

[0096] Compared with Example 1, fluorine-modified aqueous polyurethane S-390-C was not added in Comparative Example 3.

[0097] Comparative Example 4

[0098] Compared with Example 1, 30 parts of ethylene-vinyl acetate-acrylic copolymer and 20 parts of acrylonitrile-styrene-acrylic copolymer were added in Comparative Example 4.

[0099] Comparative Example 5

[0100] Compared with Example 1, the difference is that the mass ratio of Component A to Component B in Comparative Example 5 is 3:1.

[0101] Comparative Example 6

[0102] Compared with Example 1, the difference is that the mass ratio of Component A to Component B in Comparative Example 6 is 15:1.

[0103] The waterborne low-temperature anti-icing coatings prepared in Examples 1 to 6 and Comparative Examples 1 to 6 were aged for 15 minutes and sprayed on the surface of the fan blades, and then cured at 80 °C for 1.5 hours. The properties of the waterborne low-temperature anti-icing coatings prepared in Examples 1 to 6 and Comparative Examples 1 to 6 were tested, and the test results are shown in Table 1.

[0104] Table 1 Test results of the properties of the waterborne low-temperature anti-icing coatings prepared in Examples 1 to 6 and Comparative Examples 1 to 6

[0105]

[0106]

[0107] As can be seen from the above embodiments, the present invention provides an aqueous low-temperature resistant and anti-icing coating, its preparation method and application. The aqueous low-temperature resistant and anti-icing coating comprises component A and component B; component A comprises: 15-30 parts of epoxy resin-modified acrylic emulsion, 10-25 parts of fluorine-modified waterborne polyurethane, 10-20 parts of ethylene-vinyl acetate-acrylic copolymer, 5-15 parts of acrylonitrile-styrene-acrylic copolymer, 0.1-10 parts of added auxiliary agent, and 30-60 parts of water; component B is an isocyanate curing agent; the mass ratio of component A to component B is 5-10:1. The present invention adopts a ternary synergistic system of epoxy resin-acrylic emulsion / fluorine-modified polyurethane / ternary copolymer, designs a polarity matching and phase separation structure at the molecular level, and successfully overcomes the "impossible triangle" problem among low temperature, water solubility and strength; through the combination of the flexible chain segment of the ethylene-vinyl acetate-acrylic ternary copolymer and the low-temperature anti-brittleness of the fluorine-modified polyurethane, the coating still maintains an elongation at break of more than 200% at -40°C.

[0108] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A water-based low-temperature resistant and anti-icing coating, characterized in that: It includes component A and component B; The A component comprises: The B component is an isocyanate curing agent; The mass ratio of the component A to the component B is 5 to 10:

1.

2. The water-based low-temperature resistant and anti-icing coating according to claim 1, characterized in that: The mass fraction of acrylic acid in the ethylene-vinyl acetate-acrylic acid copolymer is 5 to 15%; The mass fraction of acrylic acid in the acrylonitrile-styrene-acrylic acid copolymer is ≥15%.

3. The water-based low-temperature resistant and anti-icing coating according to claim 1 or 2, characterized in that: The epoxy resin modified acrylic emulsion includes WS-3048; The fluorine-modified waterborne polyurethane includes S-390-C.

4. The water-based low-temperature resistant and anti-icing coating according to claim 3, characterized in that: The additives include one or more of a leveling agent, an adhesive, a low-temperature resistant additive, a film-forming aid, and a pigment or filler; The mass ratio of the leveling agent, the low temperature resistant additive, the film-forming aid and the pigment and filler is 0.1-1:1-3:3-8:5-15.

5. The water-based low-temperature resistant and anti-icing coating according to claim 4, characterized in that: The leveling agent includes polyether polyester modified organosiloxane; The low temperature resistant additive includes one or more of terminal hydroxyl polybutadiene, silane coupling agent and nano silicon dioxide; The film-forming aid includes propylene glycol methyl ether acetate; The pigment and filler include one or more of titanium dioxide, iron oxide, carbon black, calcium carbonate, talcum powder, kaolin and barium sulfate.

6. A method for preparing a water-based low-temperature resistant and anti-icing coating according to any one of claims 1 to 5, characterized in that: The following steps are involved: 1) mixing epoxy resin modified acrylic emulsion and fluorine modified waterborne polyurethane in water to obtain a mixed emulsion; 2) adding ethylene-vinyl acetate-acrylic acid copolymer and acrylonitrile-styrene-acrylic acid copolymer to the mixed emulsion in sequence for dispersion to obtain a mixed solution; 3) Premixing part of the additives to obtain a pre-dispersed slurry, adding the pre-dispersed slurry to the mixed solution, mixing, and adding the remaining additives after mixing evenly to obtain component A; 4) Component A and component B are mixed to obtain a water-based low-temperature resistant and anti-icing coating.

7. The method for preparing the water-based low-temperature resistant and anti-icing coating according to claim 6, characterized in that: In the step 1), the mixing is carried out under stirring, the stirring temperature is 10-40° C., the stirring time is 10-15 min, and the stirring speed is 300-500 rpm.

8. The method for preparing the water-based low-temperature resistant and anti-icing coating according to claim 7, characterized in that: In the step 2), the dispersion is carried out during stirring, the stirring speed is 800 to 1000 rpm, and the dispersion time is 30 to 40 minutes.

9. The method for preparing the water-based low-temperature resistant and anti-icing coating according to claim 8, characterized in that: In step 3) and step 4), the mixing is performed during stirring, the stirring speed is independently 600-800 rpm, and the mixing time is independently 20-40 min.

10. Use of the water-based low-temperature resistant and anti-icing coating according to any one of claims 1 to 5 in a low-temperature environment.

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