107results about How to "Improve anti-icing performance" patented technology

The invention relates to the field of preparation of superhydrophobic coatings, in particular to a preparation method of a persistent icing-resistant superhydrophobic coating. The preparation method comprises the following steps: firstly, carrying out cleaning and sand-blasting roughen treatment on the surface of a substrate; secondly, blending epoxy resin, a curing agent and a first solvent to obtain an epoxy resin solution; thirdly, dispersing submicron particles and nanoparticles into a second solvent, and then adding a silane coupling agent to obtain particle composite suspension; fourthly, spraying the epoxy resin solution obtained in the second step on the surface of the substrate treated in the first step, and partially curing epoxy resin adhesive; fifthly, spraying the particle composite suspension obtained in the third step on the surface of the substrate obtained in the fourth step and completely curing; sixthly, obtaining the persistent icing-resistant superhydrophobic coating. The persistent icing-resistant superhydrophobic coating disclosed by the invention has the beneficial effects that the superhydrophobic coatings prepared on the surfaces of all the substrates have good durability and firmness and persistent icing-resistant property.

The invention relates to a water-borne cable anti-icing paint containing water-borne perfluoroalkyl fluorocarbon emulsion, which comprises the following raw materials in percentage by weight: 58 to 62 percent of aqueous perfluoroalkyl fluorocarbon emulsion, 1.5 to 2.5 percent of water-borne polytetrafluoroethylene emulsifying wax, 15 to 20 percent of water-borne color paste, 0.1 to 0.5 percent of pH regulator, 1 to 2 percent of amino resin cross-linking agent or water-borne polyurethane cross-linking agent, 0.1 to 0.2 percent of antiseptic preservative, 1 to 1.2 percent of cellulose and the balance of deionized water, wherein the water-borne color paste is the mixture of the water-borne color paste with one color or the water-borne color paste with more than two colors. The water-borne cable anti-icing paint of the invention is big in water repellent angle, low in surface energy, excellent in water repellent and oil repellent properties, safe and environment-friendly, can firmly adhere to the surface of a cable in a low temperature and cold environment and is obvious in anti-icing function.

The invention provides a high-weather-proof and anti-icing polysiloxane material for concrete. The high-weather-proof and anti-icing polysiloxane material comprises the following components in parts by weight: 20-70 parts of amino-modified polyether polysiloxane, 10-30 parts of epoxy-modified polysiloxane, 10-20 parts of poly(methylphenylsilsesquioxane), 5-10 parts of poly(propylmethylsilsesquioxane) and 5-10 parts of alkoxy silane. The polysiloxane material can be used for effectively reducing the surface energy of the concrete and improving the surface hydrophobicity as well as anti-corrosion and anti-icing performances of the concrete, has excellent anti-corrosion and anti-icing capacities and can be applied to the protection of the concrete under the water work, maritime work and low-temperature climates.

The invention discloses fluorosilicone modified acrylic resin as well as a preparation method and an application thereof. The fluorine-silicon modified acrylic resin is prepared from the following components: methacrylate monomers, fluorine-containing acrylate monomers, acrylate-based silicone oil, allyl silicone oil, a polymerized active silane coupling agent, methacrylic acid, hydroxyl-containing active crosslinking monomers, glycidyl methacrylate, trimethylolpropane trimethacrylate, an initiator, a chain transfer agent and a solvent. The fluorine-containing acrylate monomer is composed of aC2-C3 short-chain fluorine-containing alkyl acrylate monomer and a C10-C12 long-chain fluorine-containing alkyl acrylate monomer. The fluorine-silicon modified acrylic resin prepared by the inventionhas the characteristic of high low viscosity, is convenient to construct and use, and reduces the generation of VOC. The coating prepared from the modified acrylic resin has the characteristics of high impact-resistant self-repairing function, icing prevention, low surface energy, hydrophobicity, oleophobicity, stain resistance, high and low temperature resistance and the like.

The invention discloses a construction process of a cement emulsified asphalt mortar penetrating semi-rigid road surface. The construction process comprises the following steps that 1, a cement emulsified asphalt mortar penetrating main structure is formed; 2, a main structure road surface is subjected to roughening treatment; 3, an adhesive layer is laid; 4, an anti-skid wear-resistant layer is laid; 5, an anti-icing layer is coated; 6, heat curing is performed; and 7, traffic is opened / initial maintenance is performed. In the main structure of the construction process of the cement emulsified asphalt mortar penetrating semi-rigid road surface, the cement emulsified asphalt mortar penetrating semi-rigid road surface has high compressive strength and shearing strength, and the bearing capacity and the high temperature stability of the road surface are greatly improved; and meanwhile, the surface performance of the road surface is further optimized by a wear-resistant and anti-icing structure of the surface layer of the road surface, and the wear-resistance and anti-icing performance are enhanced.

Deicing compositions comprised of glycerol-containing by-products of triglyceride processing processes are disclosed.

The invention relates to the field of preparation of super-hydrophobic or super-amphiphobic coatings, in particular relates to a preparation method of a sustainable anti-icing super-amphiphobic coating. The method comprises the following steps: 1, cleaning a substrate surface and carrying out sand-blasting roughening treatment; 2, blending epoxy resins, epoxy resin curing agents and a first solvent to obtain an epoxy resin solution; 3, dispersing submicron particles and nanoparticles into a second solvent, and then adding fluoroalkyl silane to obtain particle composite suspension liquid; 4, spraying substrate surface subjected to the treatment in step 1 with the epoxy resin solution obtained in step 2, and carrying out semi-curing on the epoxy resin adhesive; 5, spraying the substrate surface subjected to the treatment in step 4 with the particle composite suspension liquid obtained in step 3, and carrying out complete curing; 6, obtaining the sustainable anti-icing super-amphiphobic coating. The method has the advantages that the super-amphiphobic coating prepared on all substrate surfaces has good durability and fastness, and has sustainable anti-icing performance.

The present invention relates to a core-shell anti-ice-freezing modifier, a method for producing the same, and an anti-ice-freezing coating material comprising the same. The core-shell anti-ice-freezing modifier comprises a core and a shell layer, wherein the core is water-soluble metal salt particles; the shell layer is formed of oxide particles and coats the core. The thickness of the shell layer is 10 nm or more. The anti-ice-freezing modifier disclosed by the invention is easy to construct. When used for the anti-ice-freezing coating, an anti-ice-freezing coating layer formed by the anti-ice-freezing coating has excellent anti-ice-freezing property, hydrophobicity, slow release property and long service life.

The invention belongs to the technical field of polymer gel materials, and provides a composition for polymer gel, gel prepared from the composition and application of the gel. The composition comprises a polymer compound, a first solvent and a second solvent, wherein the polymer compound comprises but is not limited to at least one of the following substances: a polymer with a hydrogen bond effect, a polymer with a hydrophobic effect and a charged polyelectrolyte; in the first solvent, the non-covalent interaction in / among the high-molecular compounds is in a weakening shielding state; in thesecond solvent, the non-covalent interaction between the polymer compounds is activated and enhanced. The polymer gel prepared by the invention has high transparency, excellent mechanical properties,swelling resistance and icing resistance.

The invention relates to a super-hydrophobic anti-ice-coagulation compound asphalt face layer structure and a preparation method thereof. A pavement is composed of an anti-ice-coagulation functional layer, an asphalt face layer structure body and an epoxy bonding layer. The anti-ice-coagulation functional layer is prepared through a hydrophobic material and a modifying agent, and the thickness of the anti-ice-coagulation functional layer ranges from 3 cm to 6 cm. A dispersion medium of the hydrophobic material is a trimethoxypropylsilane deionized water solution, and a dispersion phase is one or two kinds of hydrophobic silicone oil substances of polytetrafluoroethylene and fluoroalkyl silane. The modifying agent is prepared by mixing nano-zinc oxide particles and a penetrating agent. An asphalt face layer is an OGFC pavement, and the thickness of the asphalt face layer is about 30 cm to 40 cm. The anti-ice-coagulation compound asphalt face layer structure is prepared in a layered construction manner, the epoxy bonding layer with the thickness ranging from 4 cm to 7 cm is poured to the body of the asphalt face layer, the anti-ice-coagulation functional layer is then smeared to the surface of the epoxy bonding layer, and therefore the asphalt pavement obtains the relatively good anti-ice-coagulation performance.

The invention discloses an electrical design method for preventing a direct current overhead contact system from being frozen. The method comprises an electrical circuit design method and an electrical control design method. According to the anti-freezing electrical circuit design method, on the basis of a basic structure of a direct current traction power supply system, a direct current bus of adirect current traction substation continuously outputs a certain amount of current to the overhead contact system, the size of the current is adjusted through adjustment of the circuit input range ofthe overhead contact system, and contact lines are prevented from being frozen through the thermal power of the overhead contact system. An anti-freezing circuit is low in consumption, small in equipment input, free of addition of manpower and mechanical facilities and easy to realize in a project. According to an electrical circuit control method, circuit control logic, action criteria and a control logic principle are proposed, and the control method is simple, effective and reliable.

A super-hydrophobic surface with a wave structure, applied to freezing prevention, and a preparation method for the same belong to the technical field of surface processing of metal base materials. The method comprises the steps that a base material is selected and the wave structure is processed on the base material through linear cutting and finish machining technologies; the prepared wave structure is preprocessed, and a hydrophobic micron flower-shaped structure is prepared on the surface of the wave structure through wet etching; and modification with a low-surface-energy substance is conducted on the hydrophobic micro flower-shaped structure, so the super-hydrophobic surface with the wave structure is prepared. The super-hydrophobic surface with the wave structure is an asymmetric surface; asymmetric bouncing is generated when drops hit the wave structure; and solid-liquid contact time of asymmetric bouncing is reduced by 40% in comparison with symmetric bouncing generated when the drops hit an equivalent super-hydrophobic plane. The super-hydrophobic surface with the wave structure provided by the invention has the beneficial effects that characteristics of contact between the metal base material and the water drops are improved; the micron flower-shaped structure modified by the substance with low surface energy can also reduce viscous force generated when the water drops slide over the surface and reduce the degree of condensation of the water drops on the base material surface; and a purpose of freezing prevention with high efficiency, high cleanliness and low cost can be realized.

The invention relates to a preparation method of an aluminum alloy bionic anti-icing surface. By means of enlightening of the surface hydrophobic self-cleaning characteristic of natural organisms, a laser processing and anodic oxidizing method is adopted, and the super hydrophobic surface with a bionic micro cylindrical array structure is prepared. According to the method, firstly a laser ablationprocessing process is adopted, the purpose is to design and change the morphology of the aluminum alloy surface, and the regular micro cylindrical array structure is prepared; and the aluminum alloysurface of the micro cylindrical array structure is dipped into electrolyte to be subjected to anodic oxidizing treatment, the aluminum alloy surface is made to form an oxidization layer with low surface energy, and therefore the super hydrophobic characteristic is acquired. The preparation method of the bionic and super hydrophobic aluminum alloy anti-icing surface is easy to operate, controllable in experiment parameter and low in cost, the method can be used for manufacturing surfaces with the super hydrophobic performance in batches, and the prepared surface has good anti-icing performanceand good mechanical stability.

The invention relates to the technical field of material surface engineering, in particular to a super-hydrophobic anti-fouling anti-icing water-based paint which comprises the following components in parts by weight: 10-15 parts of fluoride-grafted nano silicon dioxide on the surface, 40-60 parts of perfluorodecyltrimethoxysilane, 10-20 parts of carbon microspheres, 5-8 parts of modified graphene, 30-40 parts of binder and 100-150 parts of solvent. According to the super-hydrophobic anti-fouling anti-icing water-based paint, the super-hydrophobic material and the near-infrared photothermal material are added, so that the super-hydrophobic anti-fouling anti-icing water-based paint has the dual effects of super-hydrophobicity and photothermal deicing, and the near-infrared photothermal material is modified graphene which is a compound of graphene and CdS; and the super-hydrophobic material is very beneficial to formation of a rough micro-nano structure on the surface of the coating, so that the coating can obtain a larger static contact angle and a smaller rolling angle, the icing time of water drops on the surface of the coating is further prolonged, and a better anti-icing effect is achieved.

The invention discloses an anti-corrosion anti-icing and wear-resistant super-hydrophobic coating and a preparation method thereof, and belongs to the technical field of metal protection materials, and the preparation method comprises the following steps: preparation of modified nano SiO2 particles, preparation of TPU / DMF film forming liquid, pretreatment of base material film coating, and preparation of the anti-corrosion, anti-icing and wear-resistant super-hydrophobic coating. The prepared coating has excellent hydrophobicity, corrosion resistance, icing resistance and wear resistance, the safety risk of equipment and components is effectively reduced, and the service life is prolonged; the preparation method is simple, can realize industrial production, and has a good market prospect.

The invention discloses an anti-freezing asphalt mixture and a preparation method thereof, and relates to the technical field of asphalt mixtures. The anti-freezing asphalt mixture comprises, by weight, 100 parts of mixed aggregate, 5.8-6.0 parts of modified asphalt and 0.2-0.4 part of lignin fiber; and the mixed aggregate comprises, by weight, 10% of mineral powder, 5% of an anti-freezing agent,11-15% of machine-made sands, 30-34% of gravels with the particle size of 5-10 mm, and the balance of gravels with the particle size of 10-13 mm. A preparation process of the anti-freezing agent comprises the following steps: preparing a sodium chloride-zeolite compound, preparing a calcium chloride-mesoporous molecular sieve compound, spraying a coating liquid onto an inorganic salt compound composed of the sodium chloride-zeolite compound and the calcium chloride-mesoporous molecular sieve compound, and drying and dehydrating to obtain the anti-freezing agent. The anti-freezing asphalt mixture disclosed by the invention has a long-term anti-freezing effect.

The invention discloses machining equipment used for an impeller with the super-hydrophobic surface and the impeller manufactured by the machining equipment. The machining equipment comprises a fixingsupport used for clamping the impeller, driving equipment used for driving the impeller to rotate, laser etching equipment used for machining the super-hydrophobic surface on the surface of the impeller, a dust suction device used for sucking dust particles, and a controller used for controlling the whole machining process. The driving equipment is mounted on the fixing support; the laser etchingequipment is mounted on the driving equipment; a dust suction opening of the dust suction device is aligned with a working area of the fixing support; and the control end of the driving equipment, the control end of the laser etching equipment and the control end of the dust suction device are electrically connected with corresponding pins of the controller. The impeller comprises an impeller body. The impeller body comprises an impeller front cover plate, an impeller rear cover plate and a plurality of impeller blades. A plurality of grooves used for improving the surface lubricating characteristic of the impeller blades are etched in the surfaces of the impeller blades. The machining equipment has the beneficial effects that manual disturbance is avoided, detaching is convenient, and the viscous resistance and hydraulic loss of the impeller are reduced.

The invention belongs to the technical field of metal corrosion prevention, and particularly relates to an anti-corrosion and anti-icing self-cleaning super-hydrophobic coating as well as a preparation method and application thereof. According to the invention, 1H, 1H, 2H, 2H-perfluorodecyl trimethoxysilane is adopted to carry out hydrophobic modification on SiO2, the surface energy of SiO2 is reduced, and then modified SiO2 is doped with a polyester type thermoplastic polyurethane elastomer to prepare the anti-corrosion anti-icing self-cleaning super-hydrophobic coating with good hydrophobic performance. When the coating is coated on the surface of metal equipment, the icing time of the surface of the metal equipment can be effectively prolonged, the icing resistance of the surface of the metal equipment can be improved, the corrosion resistance of a metal substrate in acid, alkali and salt corrosive media can be improved, the coating has good wear resistance and chemical stability, the safety risk of equipment and components is reduced, and the service life is prolonged.

The invention relates to a long-acting slow-release black anti-freezing modifier for an asphalt pavement and a preparation method thereof. The black anti-freezing modifier includes salt storage particles including a metal salt and an adsorptive substance, and a coating material existing on the surface of the salt storage particles, wherein the coating material includes an asphalt material and an elastomer. The black anti-icing modifier is suitable for climate characteristics of various places in China, and has an excellent anti-icing property, slow release property and durability, so that theproblem of pavement reflection caused by salt precipitation and white exposure can be avoided even if the black anti-icing modifier is not uniformly mixed with an asphalt mixture or the formed anti-icing pavement is used for a long time.

The invention provides a dual-curing anti-icing coating and a preparation method and application thereof, and the dual-curing anti-icing coating comprises the following components in specific parts: ten-functional-group urethane acrylate, fluorosilicone modified acrylate resin, thermosetting acrylic acid modified epoxy resin, pentaerythritol triacrylic acid, 1,6-hexanediol diacrylate and a photoinitiator; and by mutual matching of the components, the obtained dual-curing anti-icing coating not only has excellent scratch resistance, wear resistance, weather resistance and anti-icing performance, but also can overcome hidden dangers caused by difficulty in photocuring in a shadow area of a single photocuring system, and is very wide in application range.

The invention discloses anti-icing paint and a preparation method thereof. The anti-icing paint comprises, based on 100% by mass, 30%-50% of organic silicon resin, 5%-30% of fluorine-containing micropowder and additives. By organically combining low surface energy with the organic silicon resin and the fluorine-containing micro powder, surface energy of the paint is reduced synergistically, strength and wear resistance of the paint are enhanced, hydrophobicity of the paint is increased, anti-icing property of the paint is enhanced, icing hazards caused by icing formed on base surfaces in sleet, low-temperature environments and the like can be avoided, and the anti-icing paint can be applied to the fields of power grid facilities including power transmission lines of power grids, power grid towers, optical communication cables, power grid insulators and the like.

The invention discloses an ice-condensation-resistant asphalt mixture. The composite material comprises the following components in parts by weight: 150 to 250 parts of aggregate, 50 to 80 parts of mineral powder, 10 to 20 parts of calcium sulfate, 60 to 100 parts of an asphalt matrix, 20 to 30 parts of magnesium chloride, 8 to 15 parts of ethylene glycol, 2 to 6 parts of a silane coupling agent,2 to 6 parts of terpene resin, 3 to 8 parts of zeolite, 6 to 13 parts of diatomite, 1 to 3 parts of polypropylene fiber, 1 to 3 parts of dimethyl silicon oil, 2 to 6 parts of maleic anhydride and 1 to3 parts of a corrosion inhibitor. The ice-condensation-resistant asphalt mixture provided by the invention has the following advantages: the aggregate and the mineral powder have good adhesion to asphalt; high-temperature stability is good; meanwhile, ice condensation resistance is good, so the freezing point of pavements in winter can be effectively reduced; the effect of slow release is achieved, so the ice condensation resistance has certain long-lasting durability; in addition, the ice-condensation-resistant asphalt mixture has high-temperature performance, low-temperature performance, water stability and pavement performance.

The invention relates to a special pressure transmitter for a water pump. The special pressure transmitter for the water pump comprises a base, a buffering sheet, foam cotton, a steel wire, an O-shaped seal ring, a sensor, a shell, a circuit board, a silicone wire, a Hirschmann joint, an air guide tube and an insulation sleeve, wherein a groove used for accommodating the O-shaped seal ring is formed in the outer circle of the sensor; the O-shaped seal ring is clamped with the sensor via the groove; a metal tube is arranged at the top of the sensor; the air guide tube is in inserted connection with the metal tube; a cavity with an open top is formed in the base; the sensor is arranged inside the cavity; the buffering sheet is arranged between the bottom of the cavity of the base and the bottom of the sensor; the foam cotton is arranged between the buffering sheet and the bottom of the sensor; the buffering sheet is clamped with the foam cotton via the steel wire; the circuit board is fixedly arranged in the insulation sleeve; the insulation sleeve is fixedly arranged in the shell; the circuit board is connected to the Hirschmann joint via the silicone wire; the top of the base is connected to one end of the shell; the other end of the shell is connected to the Hirschmann joint.

A super-hydrophobic anti-icing aviation aluminum alloy surface with ultralow ice adhesion is composed of a multi-stage micro-nano structure, the micro-nano structure is based on a three-dimensional micron cone structure periodically distributed on the surface of an aluminum alloy base material, and densely-growing nanosheets and nano flower clusters composed of the nanosheets are distributed on the surface of a micron cone; and one or two of submicron spheres and submicron flowers are dispersed and distributed on the surface of the micron cone or between the micron cones. The invention furtherdiscloses a production method of the surface, the surface is formed by combining ultrafast laser ablation and a wet chemical method and then carrying out low-free-energy surface chemical modification, and large-area efficient production can be achieved. The aviation aluminum alloy anti-icing surface has extremely low ice adhesion, adhesion strength between ice and the surface can be as low as 6 kPa, and the ice can automatically fall off under the action of self gravity or slight vibration. The surface structure can be widely applied to anti-icing fields of aviation key components, ships, ground transportation tools, refrigerators, air conditioners and the like.

The present invention discloses a non-successional wettability modifying based bionic anti-icing surface which is characterized in that the surface of a material are regularly coated with a plurality of dewatering coatings with different wettability with that of the material, so that the non-successional wettability distribution of the surface of the material can be obtained; in the present invention, a single wettability characteristic of the surface of the material is changed, so that the surface of the material has different dewatering performances and an active anti-icing performance, the adhesion amount of water on the surface of the material is reduced, the icing time is delayed, and the icing freezing intensity is recued; due to dewatering effects of the different dewatering layers, condensate water has different freezing icing time to form discontinuous and non-successional freezing interfaces among the dewatering layers, the freezing adhesion stability between ice and the materials is broken, and the adhesion strength of the ice on the material is reduced. In the present invention, the adhesion amount of the water on the surface of the material is reduced, the icing time is delayed, at the same time, the ability of inhibiting icing and reducing adhesion strength is achieved, and active ice preventing and removing effects are realized.

The invention provides an anti-icing material with electrothermal photothermal conversion capability and wear-resistant and super-hydrophobic multiple properties as well as a preparation method and application of the anti-icing material, and relates to the technical field of functional coating materials. The anti-icing material with the electrothermal photo-thermal conversion capability and the wear-resistant and super-hydrophobic multiple properties comprises an insulating layer and an electrothermal photo-thermal super-hydrophobic coating which are sequentially arranged on the surface of a base material layer from bottom to top; parallel electrodes are arranged between the insulating layer and the electrothermal photo-thermal super-hydrophobic coating; the electrothermal photo-thermal super-hydrophobic coating is obtained by curing raw materials including a fluorinated graft polymer matrix, nano conductive particles, nano photo-thermal particles, nano hydrophobic particles, a fluorine ammonium salt curing agent and an organic solvent. According to the anti-icing material provided by the invention, a single material simultaneously has multiple properties of electric heating, photo-thermal conversion capability, wear resistance and super hydrophobicity, multiple anti-icing and de-icing modes are combined, anti-icing and energy saving can be effectively realized, and the anti-icing material can be applied to the anti-icing and de-icing fields of fan blades, aircrafts and the like.

The invention belongs to the technical field of an airplane ice prevention and removal, particularly discloses a double-channel ice prevention and removal device for the atmospheric data probe. The double-channel ice prevention and removal device for the atmospheric data probe is provided with an armored heater on a pipe body of the atmospheric data probe, and is provided with a rod-shaped heaterat the front edge of an inner cavity of a support arm of the atmospheric data probe. The rod-shaped heater comprises a conductive wire, an adapter, a shell and an insulating filling material, whereinthe conductive wire is placed in the shell and filled with the insulating filling material; and meanwhile, the conductive wire is switched into a lead through the adapter. The double-channel ice prevention and removal device for the atmospheric data probe can effectively improve the ice prevention and removal performance by arranging the rod-shaped heater at the front edge of the inner cavity of the support arm of the atmospheric data probe; meanwhile, the rod-shaped heater adopts the mechanical fixing mode, so that the probe material is not limited, therefore, the ice prevention and removal device can be applied to the atmospheric data probe using traditional materials such as copper alloy, nickel alloy and the like and new materials such as composite materials, titanium alloy, low melting point materials and the like, which effectively ensures the ice prevention and removal performance of the atmospheric data probe, and has great practical application value.

The invention discloses an anti-icing paint comprising, by weight, 35-50% of a powdery film-forming substance, 5-20% of inorganic nano-particles, 10-20% of a curing agent, 5-10% of titanium dioxide, 3-5% of a dispersing agent, and 3-5% of a de-foaming agent. The above raw materials are mixed and uniformly mixed by stirring; the obtained mixture is added into an extruder and is subjected to melt extrusion; the obtained material is pressed into a thin sheet with a thickness of 2mm through roller compression; the material is crushed by using a crusher, and is ground by using a nano-scale grinder; and graded screening is carried out, such that the nano-grade anti-icing paint is obtained. The paint is green and environment-friendly, and has the advantages of high anti-icing performance and easy construction. With the addition of the rigid inorganic nano-particles, paint mechanical performance and wear resistance are improved.

The invention relates to a preparation method for a nano copper oxide super-hydrophobic coating. The preparation method comprises the steps that copper oxide nano particle raw materials are modified, and then prepared into the super-hydrophobic coating. The super-hydrophobic coating prepared through the preparation method has good pollution flashover preventing performance and icing preventing performance, the preparation method is simple and convenient, and low in cost.

The invention relates to the field of road materials, and particularly discloses an anti-freezing asphalt mixture and a preparation method thereof. The anti-freezing asphalt mixture is prepared from the following raw materials in parts by weight: 170-280 parts of aggregate, 40-70 parts of mineral powder, 150-250 parts of asphalt and 30-60 parts of an anti-freezing agent, The anti-freezing agent is prepared from the following raw materials in parts by weight: 10-26 parts of organic salt, 5-15 parts of volcanic rock particles, 25-75 parts of a slow release agent and 1-5 parts of a coating agent. The preparation method comprises the following steps of: well mixing the aggregate, the mineral powder and the anti-freezing agent, adding the mixture into molten asphalt, and mixing well to obtain the anti-freezing asphalt mixture. The anti-freezing asphalt mixture disclosed by the invention has the advantage of good anti-freezing effect.