51 results about "Ice adhesion" patented technology

The invention relates to a four-degree-of-freedom icing adhesion strength testing device and a testing method. The testing device comprises a fixed platform, and a refrigerating and freezing module and a four-degree-of-freedom motion testing module which are arranged on the fixed platform. The fixed platform comprises a flat plate and a height-adjustable telescopic rod. The refrigerating and freezing module comprises a refrigerating platform, a refrigerating plate inclination angle assembly and at least one ice making mold. The four-degree-of-freedom motion test module comprises a Z-axis moving sliding table, a Y-axis rotating inclination angle assembly, an X-axis moving sliding table, a Y-axis moving sliding table, a pull and push dynamometer clamp and a pull and push dynamometer; the pull and push dynamometer can drive ice blocks in the ice making mold to be separated from a test sample under the driving of the Z-axis moving sliding table, the Y-axis rotating dip angle assembly, the X-axis moving sliding table and the Y-axis moving sliding table. Compared with the prior art, the device has the advantages of high experiment efficiency, wide measurement range, adjustable experiment parameters, diversified measurement modes and the like.

The invention discloses an ice adhesion strength measuring device and an ice adhesion strength measuring method, and belongs to the technical field of ice adhesion strength measurement. The measuring device comprises an inner arc guide rail, an outer arc guide rail, an icing mold, an action line, a tension sensor, a first movable part, a second movable part and a steering part. The inner arc guide rail is coaxially sleeved with the outer arc guide rail, the icing mold is fixedly connected with the inner arc guide rail and provided with an icing cavity, the icing cavity can make contact with the surface of a sample to be tested, the first movable part is movably installed on the inner arc guide rail, the second movable part is movably installed on the outer arc guide rail, and the steering part is fixedly arranged. One end of the action line is fixed on the first movable part, and the other end is wound on the second movable part and the steering part and connected with the tension sensor; the first movable part can be driven by the action line to move along the inner arc guide rail. The ice adhesion strength at any angle is measured by adjusting the position of the action line, and the measurable angle range of the ice adhesion strength is expanded.

The invention relates to the technical field of low-temperature environment test and ice adhesion test, and discloses a shear ice cutting force measuring device which comprises a low-temperature box, a loading mechanism, a test piece and a control system. The low-temperature box is used for providing a test space and a controllable low-temperature environment; the loading mechanism is used for applying shear load to the test piece and collecting shear force; the test piece is composed of a base and accumulated ice and is installed on the fixing clamp. The control system executes hierarchical temperature control based on a preset parameter table and a PID algorithm, when the temperature difference is large, the refrigeration unit is driven to operate at full power, and when the temperature is close to the set temperature, constant-temperature keeping is achieved through cold and heat power cooperative adjustment; and when a disturbance event is detected, the event-driven parameter table is automatically switched to, and the default parameter table is returned after a recovery condition is met, so that rapid cooling, stable temperature control and disturbance compensation are realized. According to the invention, the shearing debonding force of the ice and the substrate interface can be accurately measured, and the stability and repeatability of an experimental result are enhanced.

The application provides a white clover surface with super-low ice adhesion strength and a preparation method thereof, which comprises analyzing the relationship between the white clover surface structure and the super-hydrophobic cold resistance; copying the white clover surface structure, and processing periodic micropores on a base material by means of femtosecond laser direct writing; boiling the surface of the periodic micropores; and fluorinating the surface to modify it into a functional surface with super-hydrophobicity. The white clover surface with super-low ice adhesion strength has a micro-nano hierarchical structure, which comprises closely arranged larger micrometer-level periodic pore structures, smaller micrometer-level granular particles dispersedly distributed on the surface of the micropore structures, and densely distributed sub-micrometer-level sheet structures on the surface. The surface has super-hydrophobic low adhesion, the ice adhesion strength is as low as 1.08 kPa, the static icing prolonging time can reach 4 h, the dynamic frost prevention capacity can last for 5 h in a low-temperature and high-humidity environment, and the surface has good wear resistance and reusability.

The application provides a preparation method of a laser-induced graphene composite film based on a biomimetic multi-level structure, the composite film and application. It relates to the fields of material surface engineering and deicing technology, and the preparation method comprises the following steps: cleaning and drying pretreatment of a polyimide film substrate; through selective scanning by a pulsed laser, a laser-induced graphene layer is generated in situ on the substrate surface synchronously, and a biomimetic multi-level structure containing a periodic microporous array and a three-dimensional porous graphene network is constructed; the product is immersed in a nano-hydrophobic solution for modification and solidification to form a three-level hydrophobic coating; annealing treatment is performed under inert gas protection to eliminate internal stress, and the composite film is obtained after cooling. The film has super-hydrophobicity, low ice adhesion strength and high efficient light-heat conversion capacity. The application aims to solve the safety and efficiency problems in the fields of aviation, wind power, photovoltaic and the like due to the lack of long-acting, stable, low-energy and function-integrated deicing materials.

The invention relates to the technical field of anti-icing materials, in particular to a polymer-based composite anti-icing material and a preparation method and application thereof. The polymer-based composite anti-icing material comprises a hydrophilic porous polymer matrix, a silane hydrophobic coating and a silicon-based lubricating coating, the silane hydrophobic coating is grafted on the surface and in a pore structure of the hydrophilic porous polymer matrix, and the silicon-based lubricating coating is grafted on the surface of the silane hydrophobic coating. The polymer-based composite anti-icing material provided by the invention has a surface structure similar to that of vermilion, is smooth in surface, extremely low in ice adhesive force, excellent in self-lubricating property, high in light transmittance and good in durability, and can be widely applied to anti-icing and anti-fouling in the fields of aviation, wind power, power transmission, refrigerated transportation, communication base stations and the like.

The application discloses an ice adhesion strength measuring device and a measuring method, and belongs to the technical field of ice adhesion strength measurement. The measuring device comprises an inner circular arc guide rail, an outer circular arc guide rail, an icing mold, an action line, a tension sensor, a first movable part, a second movable part and a turning part. The outer circular arc guide rail is coaxially sleeved outside the inner circular arc guide rail, the icing mold is fixedly connected with the inner circular arc guide rail, the icing mold is provided with an icing chamber, the icing chamber can be in contact with the surface of a sample to be measured, the first movable part is movably installed on the inner circular arc guide rail, the second movable part is movably installed on the outer circular arc guide rail, the turning part is fixedly arranged, one end of the action line is fixed to the first movable part, the other end is arranged around the second movable part and the turning part and is connected with the tension sensor, and the first movable part can move along the inner circular arc guide rail under the driving of the action line. The position of the action line is adjusted, the ice adhesion strength at any angle is measured, and the measurable angle range of the ice adhesion strength is expanded.

This disclosure relates to a method for strengthening wind turbine blades. The method includes: grinding the surface of the blade body; applying masking tape to the blade body to form a ring structure, thus defining the ground area as a treatment area; applying an elastic protective material to the treatment area to form an elastic protective layer; applying an anti-icing protective layer onto the elastic protective layer; and removing the masking tape. By applying an elastic protective material to the blade body surface and then applying an anti-icing protective layer, a layered protective structure is formed. When the blade rotates, the elastic protective layer provides elastic cushioning for rainwater or sand impacting the blade, thereby protecting the blade body from damage. The anti-icing protective layer, while providing basic protection, also reduces the ice adhesion strength on the blade body surface, thus preventing ice buildup. Furthermore, this method can reduce the difficulty of strengthening the blades of in-service turbines and improve construction efficiency.

The invention belongs to the technical field of protective paint in the electric power industry, and discloses an epoxy-group solvent-free low-adhesion easy-deicing coating and a preparation method and application thereof, the coating comprises a first paint component and a second paint component; the first coating component is prepared from the following raw materials in parts by weight: 80 to 110 parts of modified epoxy-based glue, 40 to 60 parts of epoxy-terminated polydimethylsiloxane, 50 to 100 parts of a lubricating agent, 10 to 15 parts of a modified reinforcing material and 20 to 30 parts of modified functional filler; and the second coating component is prepared from the following raw materials in parts by weight: 75-95 parts of a curing agent and 5-10 parts of a lubricating agent. According to the invention, hydrophobic, tackifying, anti-aging, filler and other components are introduced, so that the low-adhesion and easy-deicing coating which is low in surface ice adhesion, stable in structure, excellent in adhesive force and capable of being recoated is designed, and the comprehensive performance of the coating is improved.

This application provides a highly wear-resistant, transparent, superhydrophobic, and anti-icing coating with a pyramid structure and its preparation method, relating to the field of superhydrophobic anti-icing technology. The method first prepares a transparent substrate with a pyramid structure array; after surface activation of the transparent substrate, a transparent adhesive resin dilution is coated and pre-cured by heating; subsequently, a hydrophobic particle dispersion is coated on the surface of the semi-cured film, causing the hydrophobic particles to mainly accumulate in the grooves between the pyramid protrusions, thus obtaining a composite coating. This application utilizes the pyramid array structure to disperse stress, improving mechanical wear resistance, and the combination of the pyramid structure and hydrophobic particles can significantly prolong the freezing time of water droplets in low-temperature environments and reduce ice adhesion. This application achieves superhydrophobicity while maintaining excellent optical transparency, and has broad application prospects in fields requiring both transparency and anti-icing functions, such as transparent aircraft components, photovoltaic modules, and outdoor optical devices.

This invention discloses a laser-processed honeycomb-type energy-saving electrothermal anti-icing surface and its preparation method, belonging to the field of metal surface laser beam processing technology. The honeycomb-type energy-saving electrothermal anti-icing surface is prepared by bonding an HMPC microstructure surface, after low surface energy treatment, to an electrothermal layer. The HMPC microstructure layer has a hexagonal hollow micropillar structure array processed by femtosecond laser; the electrothermal layer is prepared by bonding insulating polyimide layers to both sides of the MWCNTs / AgNWs electrothermal film. The honeycomb-type energy-saving electrothermal anti-icing surface prepared by this invention has excellent anti-icing / de-icing capabilities. The structural layer forms a stable heat insulation layer by increasing the specific surface area, which, together with the electrothermal layer, achieves efficient heat storage and slow release. Under an applied voltage of 1V, ice melting is achieved within 64s. The surface ice adhesion strength is tested to be 0.96kPa, which is only 0.0138 times that of pure aluminum surface, avoiding the defects of intermittent ice melting and interrupted heating in mainstream reverse circulation defrosting technology.

This invention relates to the field of functional coating materials technology, and discloses a composite anti-icing coating based on phase change microcapsules-polyurea, its preparation method, and its application. The composite anti-icing coating includes a polyurea matrix and phase change microcapsule particles dispersed within the matrix. The preparation method is as follows: the phase change core material and film-forming polymer are dissolved in an organic solvent to form an oil phase, and the wall material polymer is dissolved in water to form an aqueous phase; the oil phase is emulsified by dropwise addition of the aqueous phase, followed by curing, separation, and drying to obtain phase change microcapsules; these microcapsules are dispersed in a solvent, and a polyurea prepolymer and curing agent are added to obtain a coating slurry; the slurry is sprayed onto the surface of a substrate and dried to obtain the final product. This composite anti-icing coating can be applied to de-icing or anti-icing materials, possessing the dual functions of delaying ice crystal nucleation and growth due to the latent heat of phase change and stress-triggered release of alkane to form an interfacial oil film, reducing ice adhesion. It exhibits excellent anti-icing performance and is suitable for surface protection of facilities prone to icing in cold outdoor environments.

The invention relates to the technical field of road traffic safety materials, and provides bionic super-hydrophobic pavement marking paint based on a dual-state corncob lignin synergistic structure and a preparation method of the bionic super-hydrophobic pavement marking paint. The coating still has excellent super-hydrophobicity (the contact angle is larger than or equal to 156 degrees, and the sliding angle is smaller than or equal to 3.5 degrees), abrasion resistance (the contact angle retention rate after abrasion is larger than or equal to 95%) and ice adhesion resistance (smaller than or equal to 22.5 kPa) in a fluorine-free system, and the performance is remarkably superior to that of a fluorine-silicon system. The advantages of high carbonization reaction activity and functional group density of the corncob lignin are fully exerted, the biomass-based material shows interface self-migration and super-hydrophobic strengthening effects in the pavement marking for the first time, and unexpected technical effects and remarkable creativity are achieved.

The application belongs to the technical field of ice-coated material performance testing, and particularly relates to a material surface ice adhesion force testing device, method and evaluation method, which comprises a refrigeration sub-device and a testing sub-device arranged in the refrigeration sub-device; wherein the refrigeration sub-device adopts a double-layer insulation box body structure with a sandwich design, comprising a refrigeration pipeline system arranged in the sandwich and a double-temperature zone control system arranged on the box body structure; the refrigeration pipeline system comprises a first refrigeration pipeline arranged at the bottom of the box body structure and a second refrigeration pipeline arranged at the upper part of the box body structure; the double-temperature zone control system comprises a first temperature control subsystem connected with the first refrigeration pipeline and a second temperature control subsystem connected with the second refrigeration pipeline; the first temperature control subsystem and the second temperature control subsystem are independent of each other.

The application discloses a power design method and device of a wing electrothermal deicing system and a storage medium, and relates to the technical field of electrothermal deicing. The application measures the ice sample shedding time of a plurality of target positions on the surface of a target airfoil through icing wind tunnel test. The spatial distribution difference of the ice adhesion strength is accurately characterized through the ice shedding time spatial distribution curve, and then a differentiated power calculation model is used to configure an independent power calculation formula for each target position. After the engineering constraint partition, the heating is started synchronously, the ice adhesion strength difference is accurately compensated by the partition power density difference, the deicing asynchronization problem caused by the traditional uniform power or experience is solved, the synchronous deicing of the plurality of positions of the wing is realized, the stable flight aerodynamic performance is ensured, and the invalid energy consumption can be reduced and the energy utilization rate can be improved.

The present application provides a kind of reactive hydrophobic silica nanoparticles and its application in coating composition, coating. By introducing reactive hydrophobic silane modified compound coated silica nanoparticles into epoxy resin, the coating has excellent hydrophobic ability and very low ice adhesion strength. The reactive group on the surface of silica nanoparticles is beneficial to improve the binding force of epoxy resin and nanoparticles in the coating, so that the superhydrophobic coating has a super-high hydrophobic angle, and water droplets are difficult to stay on the surface for a long time and freeze into ice. Even if some water droplets form ice at very low temperature, the ice adhesion strength of the ice is only 2.42 kPa, and it is very easy to fall off under the action of a small shear force. The superhydrophobic coating is suitable for application in the anti-icing of equipment and facility component surface, by improving the water contact angle of water droplets on the surface of the object to reduce the contact area with the surface and improve the ice self-detaching property after icing, thereby solving the problem of equipment and facility operation failure or efficiency reduction caused by icing.

The present application relates to a kind of static ice and the interface adhesion strength envelope measurement method of measured substrate, it includes the following steps: by measuring system obtains uniaxial tensile adhesion strength and uniaxial shear adhesion strength;N first measured data points are preset with horizontal coordinate obeying uniform distribution, and its horizontal and vertical coordinate value is calculated, then data fitting is carried out using inflection point-free distribution model and first inflection point distribution model, and the type of static ice and the interface adhesion strength envelope of measured substrate is judged according to two fitting degrees, if there is inflection point, the horizontal and vertical coordinates of the preset N second measured data points are calculated in combination with specified second inflection point distribution model;Then data fitting is carried out using the second inflection point distribution model to all data points, and the adhesion strength envelope of measured substrate is obtained.

The present application relates to the technical field of coating, in particular to a long-acting anti-icing coating containing polysiloxane and a preparation method thereof. The coating uses hydroxyl polysiloxane, tetraethyl orthosilicate, fluorine chain modified cross-linkable core-shell silica and the like as main raw materials, realizes efficient anchoring of fluorine chain and molecular level combination of the organic silicon matrix by constructing a hierarchical core-shell structure with high binding energy. At the same time, a proper amount of dimethyl silicone oil (150-250 mPa·s) is introduced to synergistically control the viscoelasticity and stress dispersion of the matrix, thereby improving the long-acting anti-icing performance. The strategy of cross-linking first and then fluorination is adopted, so that the hydrophobic fluorine chain is aggregated on the surface of the nanoparticles, and a dense cross-linked network is formed in the inside, thereby effectively improving the mechanical strength, wear resistance and low-temperature impact resistance of the coating. The prepared coating not only significantly reduces the ice adhesion, but also has excellent durability and multiple cycle use performance.

The invention belongs to the technical field of composite coating preparation, and discloses a quasi-liquid surface anti-icing epoxy composite coating and a preparation method and application thereof.The method comprises the steps that flexible epoxy resin and a flexible curing agent are used as film forming matter, filler rich in hydroxyl on the surface and a plasticizer are blended, and the anti-icing epoxy composite coating is obtained; the stress localized flexible epoxy resin material is prepared; on the basis of a vapor deposition method, hydroxyl-terminated siloxane generated through hydrolysis and hydroxyl on the surface of a flexible epoxy resin material are subjected to dehydration condensation, covalent grafting of siloxane chains is achieved, and the quasi-liquid surface anti-icing epoxy composite coating is obtained. According to the invention, stress localization is realized by introducing the rigid filler into the body, low-energy-consumption shedding of a large-area ice layer is promoted, and meanwhile, a siloxane polymer brush with high fluidity is grafted on the surface to form a stable quasi-liquid interface so as to provide ultra-low ice adhesive force.

This invention relates to an anti-icing and snow-suppressing composite material suitable for cold regions, its preparation method, and its application. It aims to solve the technical problems of existing boards in cold regions, such as easy snow accumulation and icing, strong ice adhesion, high low-temperature brittleness, and corrosion, high energy consumption, and material damage associated with traditional snow melting methods. The material of this invention consists of a low-freezing-point composite filler, elastic rubber powder, and a wood-plastic matrix. The low-freezing-point composite filler is obtained by coating phase change microcapsules and porous adsorbent carriers loaded with inorganic salt freezing point inhibitors with an interfacial compatibilizer and then mixing them uniformly. After molding, the material exhibits a notched impact strength of 6.5~8.5 kJ / m² at -30℃, a surface water contact angle of 100°~110°, a static bending strength retention rate of 85%~90% after 30 freeze-thaw cycles, a surface freezing point reduced to -5℃~-12℃, and an ice adhesion strength as low as 120~170 kPa, making it suitable for use in cold regions.

The invention relates to the technical field of heat pump units, and discloses a fin type heat exchanger, a heat pump system and a control method of the heat pump system, and the fin type heat exchanger comprises a fin body, a heat exchange coil loop, a bypass defrosting loop assembly and a flow control assembly; a bypass defrosting loop assembly is arranged at the position, corresponding to a frosting area at the bottom of a fin body, of a first heat exchange pipeline, and a flow control assembly is arranged on a bypass refrigerant branch, so that a heat pump system can directionally guide a refrigerant into the frosting area at the bottom of the fin body under the defrosting working condition, and the on-off and / or flow of the guided refrigerant are / is adjusted; therefore, the refrigerant supply capacity and the local heat exchange capacity of the bottom frosting area are improved, and the problems of incomplete defrosting, residual frost, icing adhesion and the like caused by insufficient refrigerant distribution and low flow speed of the bottom area in the prior art are solved.

The application discloses a preparation method of a polyurea photo-thermal anti-icing coating and belongs to the technical field of photo-thermal anti-icing. The application is based on silica / polyurea composite particles and carbon materials, and super-hydrophobicity and relatively high photo-thermal conversion efficiency are obtained. The method is characterized in that silica nanoparticles are combined into polyurea molecules to form silica / polyurea composite particles; then the composite particles are combined with graphite microparticles and uniformly dispersed in polysiloxane, and a super-hydrophobic photo-thermal coating with excellent wear resistance and durability is developed. The coating surface has high photo-thermal conversion efficiency, can obviously increase temperature under the irradiation of sunlight, can delay the icing time and reduce the ice adhesion strength, and thus better anti-icing and de-icing effects are achieved.

This invention discloses a multifunctional coating, its preparation method, and its application, belonging to the technical field of bridge protection materials. This invention utilizes a micro-nano composite structure of MOF and molybdenum disulfide grown in a graded manner on the surface of a thin sheet material, synergistically with fluorosilicone resin to prepare an anti-icing coating. The anti-icing coating prepared using this method exhibits excellent anti-icing performance, achieving ultra-low ice adhesion. Furthermore, molybdenum disulfide has high photothermal conversion efficiency; in cloudy conditions, it converts ultraviolet light into heat energy, increasing the surface temperature and significantly delaying the icing initiation time. This invention also provides a multifunctional coating that achieves integrated fireproofing and ice-repelling through a gradient structure design of "aerogel felt - sealing layer - anti-icing layer," exhibiting high durability in extreme environments and a long service life, providing long-term protection. Specifically, the aerogel felt can insulate against flames up to 1100℃, and the anti-icing functional layer maintains low ice adhesion strength, simultaneously achieving efficient ice repellency and active fireproofing and heat insulation.

The invention relates to the technical field of functional polymer materials and surface engineering, in particular to a fluorine-free silicon-containing anti-icing coating preparation method based on organic tellurium compound regulation, which comprises the following steps: mixing a silicon-containing monomer and a polar monomer, and uniformly stirring at room temperature to form a precursor solution; adding an organic azo compound and an organic tellurium compound into the precursor solution in an inert atmosphere, reacting, purifying and drying to obtain a silicon-containing copolymer; dissolving the obtained silicon-containing copolymer in a solvent, and then adding a cross-linking agent to prepare a coating solution; and uniformly coating the surface of a base material with the coating liquid, and drying to form the fluoride-free silicon-containing anti-icing coating. The invention also provides the fluoride-free silicon-containing anti-icing coating obtained by the method, the surface water contact angle is greater than 100 degrees, and the ice adhesion strength is less than 50 kPa. The process is simple and convenient, the components are green and environment-friendly, and the prepared fluoride-free silicon-containing anti-icing coating material is suitable for icing protection in complex environments such as wind power blades, aerospace components and power lines.

The invention relates to a preparation method of a polyurethane anti-icing composite coating material, which comprises the following steps: mixing and stirring natural grease and an isocyanate-terminated polyether prepolymer at room temperature to fully disperse the natural grease, and defoaming under vacuum to obtain a defoamed mixture; then, adding a curing agent containing an active hydrogen functional group into the defoamed mixture, mixing and stirring until the mixture is uniformly mixed, and pouring the mixture into a mold; and finally, after standing at room temperature, carrying out heat treatment and curing to regulate and control the lubrication release rate and the cycle stability, thereby obtaining the polyurethane anti-icing composite coating material. The anti-icing composite coating prepared by the invention has a double-phase structure, can realize a lubrication release effect at low temperature, and can maintain low ice adhesion strength in multiple freezing and thawing cycles. The method is suitable for surface anti-icing treatment of cold region equipment, wind power blades, aerospace structures and the like.

The utility model discloses an ice cohesive force weakening and guiding ice treatment device which comprises a guiding ice treatment groove, a base is arranged at the bottom of the guiding ice treatment groove, a plurality of sets of idler wheels are movably installed on the surface of the base, and two sets of supporting legs are fixedly installed on the two sides of the bottom of the base respectively. The guiding ice treatment groove is supported and fixed through four sets of supporting legs at the bottom, the inner wall of the guiding ice treatment groove is covered with a hydrophobic film, meanwhile, an assembling base is fixedly installed at one end of the guiding ice treatment groove, an assembling groove is formed in the end face, away from the assembling base, of the guiding ice treatment groove, and the surface of the base is covered with a bottom plate. According to the ice bonding force weakening and ice guiding treatment device, the friction force between ice blocks and the inner wall of the ice guiding groove can be reduced through the rolling wheels, and the ice block bonding possibility is reduced; and the rollers roll under the pressure of the ice blocks, so that the ice blocks can smoothly pass through, and the interior of the guide ice treatment tank is prevented from being blocked.

The invention provides a high-orientation super-hydrophobic bionic anti-icing and anti-corrosion coating and a preparation method thereof, and belongs to the technical field of anti-icing and anti-corrosion materials. The coating is prepared from the following components in parts by weight: 10-20 parts of high-oriented spun yarn, 10-50 parts of an organic solvent, 2-10 parts of a liquid lubricant, 50-100 parts of resin, 10-50 parts of a curing agent, 1-3 parts of a dispersing agent and 1-2 parts of an anti-settling agent, wherein the highly-oriented spun yarn is prepared by taking PVDF, PEVE, PAN and the like as raw materials through solvent dissolution, electrostatic spinning and 10-100cm stretching treatment, then the highly-oriented spun yarn is fixed on the surface of resin according to the orientation requirement through a paving process, and the final coating is obtained through constant-temperature and constant-humidity curing. According to the invention, the bionic design of the grooves on the surface of the desert beetles is used for reference, and the coating has excellent super-hydrophobic characteristic, ultralow ice adhesive force and ice sliding angle along the orientation direction, and also has long-acting anti-corrosion and anti-fouling performance; the preparation process is simple, operation is convenient, complex equipment such as laser etching is not needed, and the method is suitable for special-shaped components and complex structural components.

This invention discloses a side-chain type long-chain modified silicone oil, its preparation method, and its application. This side-chain type long-chain modified silicone oil has a polysiloxane backbone, with multiple long-chain substituents -R linked to its side chains via silicon atoms. Its specific structure is shown below, where the long-chain substituents -R are straight-chain alkyl groups containing 8-16 carbon atoms, m is 10-20, and n is 50-76. Through precise design of the silicone oil's molecular structure, this invention enables its long-chain hydrocarbon side chains to generate a strong intermolecular "interlocking anchoring" effect with the porous substrate surface modified with long-chain alkylsilanes. This fundamentally solves the problem of easy lubrication layer loss when applied to smooth porous surfaces after fluid injection. Aluminum-based anti-icing surfaces prepared using this lubricant exhibit extremely low ice adhesion strength (<20 kPa), ultra-long freezing delay time, and excellent lubrication durability, making it particularly suitable for long-term passive anti-icing of outdoor equipment such as power transmission lines.

The present application relates to the field of functional polymer materials and surface engineering technology, and particularly relates to a fluorine-free silicon-containing anti-icing coating preparation method based on organic tellurium compound regulation, which comprises the following steps: mixing a silicon-containing monomer and a polar monomer, stirring uniformly at room temperature to form a precursor solution; adding an organic azo compound and an organic tellurium compound to the precursor solution under an inert atmosphere, and then performing reaction, purification and drying to obtain a silicon-containing copolymer; dissolving the obtained silicon-containing copolymer in a solvent, adding a crosslinking agent to prepare a coating solution; uniformly coating the coating solution on the surface of a substrate, and drying to form a fluorine-free silicon-containing anti-icing coating. The present application also provides the fluorine-free silicon-containing anti-icing coating obtained by the method, which has a surface water contact angle greater than 100° and an ice adhesion strength less than 50 kPa. The present application has a simple process, green and environmentally-friendly components, and the prepared fluorine-free silicon-containing anti-icing coating material is suitable for icing protection under complex environments such as wind power blades, aerospace components and power lines.

The invention discloses a cable surface deicing device, and relates to the technical field of cable deicing, the cable surface deicing device comprises a deicing machine body, the deicing machine body comprises a mounting shell, two sides of the mounting shell are fixedly connected with balance plates, and an inner cavity of the mounting shell is provided with a deicing mechanism; the deicing mechanism comprises a vibration unit, and the vibration unit is arranged on one side of the mounting shell; according to the cable surface deicing device, the vibration unit and the salt scattering unit are arranged and used in cooperation, the purpose of effectively removing ice blocks can be achieved, salt is scattered on an ice layer of a cable in the deicing process, the salt can reduce the freezing point of water, the structure of ice is damaged, the adhesive force of the ice is reduced, the ice becomes loose and fragile, and the cable surface deicing effect is improved. And then high-frequency ultrasonic knocking is carried out, so that ice blocks attached to the surface of the cable can be effectively removed, the ice blocks with relatively high adhesive force are also easy to fall off, the deicing effect on the surface of the cable is improved, and subsequent normal use of the cable is ensured.