77 results about "Ice adhesion" patented technology

The invention discloses a preparation method of a composite micro-groove super-hydrophobic low-ice-adhesion photo-thermal film. The preparation method comprises the following steps: (1) constructing a low-elasticity-modulus photo-thermal composite sponge substrate through a solvothermal method; (2) uniformly coating the surface of a substrate with a polydimethylsiloxane (PDMS) precursor solution by adopting an aerosol-assisted deposition technology, and carrying out thermocuring to form a functional composite interface layer; and (3) constructing a multi-stage scallop surface-imitating micro-nano groove composite structure on the surface of the interface layer by using a femtosecond laser micro-nano processing technology. The prepared film has super-hydrophobicity, the surface of the film is in a Cassie-Baxter wetting state with a 164-degree contact angle and a 1-degree rolling angle, and the film has a surface self-cleaning function. Under the icing condition, the adhesion strength of an ice layer of the system is obviously reduced to 2.57 kPa, the static delay icing time is effectively prolonged to 1587 s, and the system has the photo-thermal response characteristic and can realize rapid icing ablation under the standard solar irradiance; the preparation method has the characteristics of high process controllability, environment friendliness and the like, and is suitable for large-scale continuous production.

This invention relates to the field of anti-icing technology and provides a hydrophobic and lubricating anti-icing coating that solves the problems of poor wear resistance and inadequate anti-icing effect of existing low-ice adhesion coatings in low-temperature and high-humidity environments. The hydrophobic and lubricating anti-icing coating comprises a surface layer formed by a hydrogel component, a lubricant component, and modified micro / nano particles. The modified micro / nano particles are interwoven within the hydrogel component to form a three-dimensional network structure. This three-dimensional network structure forms a superhydrophobic micro / nano structure on the upper surface of the surface layer. The lubricant component permeates within the three-dimensional network structure, and the hydrogel component is covalently bonded to the modified micro / nano particles.

The invention discloses an anti-icing testing method, device and equipment for a super-hydrophobic surface structure of energy equipment and a storage medium, and relates to the technical field of super-hydrophobic surface testing. Designing a super-hydrophobic surface structure based on the environmental main control factor to obtain a structure parameter set; simulating the super-hydrophobic surface structure by using an environment load condition determined based on the environment working condition matrix and a structure parameter set to obtain an equipment critical vibration frequency, and determining a current surface structure morphology based on the structure parameter set and the equipment critical vibration frequency; and determining a morphology simulation error based on the current surface structure morphology and the actual surface structure morphology of the super-hydrophobic surface structure, and monitoring the super-hydrophobic surface structure based on the morphology simulation error, the structure parameter set, the equipment critical vibration frequency and the preset control mechanical excitation frequency to obtain the ice growth rate and the ice adhesion work. The efficiency of anti-icing testing of the super-hydrophobic surface structure is improved.

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 relates to a low-ice-adhesion super-hydrophobic anti-icing coating as well as a preparation method and application thereof. Single-end amino fluorosilicone oil is grafted to the surface of an aldehyde group functionalized metal organic framework material through an amino-aldehyde group condensation reaction to obtain a hydrophobically modified metal organic framework material, the hydrophobically modified metal organic framework material is compounded with a synthesized fluorinated acrylate copolymer, and the coating is prepared through ultrasonic dispersion and spraying curing processes. According to the prepared low-ice-adhesion super-hydrophobic anti-icing coating, through the synergistic effect of fluorosilane grafting modification and a micro-nano structure, the excellent performance that the static water contact angle is larger than or equal to 160 degrees, the rolling angle is smaller than or equal to 2 degrees, and the ice adhesion strength is smaller than or equal to 20 kPa is achieved. Compared with a traditional anti-icing coating, a metal organic framework material functional modification strategy is adopted, the ice adhesion force is remarkably reduced while the mechanical stability of the coating is kept, and uniform film forming on the surfaces of base materials such as aluminum wires can be achieved through the spraying technology. The coating is suitable for anti-icing protection of the aluminum conductor of the power transmission line, and has the characteristics of long-acting icing resistance and low ice adhesion.

The invention relates to an anti-icing super-hydrophobic coating for an aluminum conductor as well as a preparation method and application of the anti-icing super-hydrophobic coating. Single-ended epoxy fluorosilicone oil is grafted to the surface of an amino-functionalized metal organic framework material through an epoxy-amino ring-opening reaction to obtain a hydrophobically modified metal organic framework material, the hydrophobically modified metal organic framework material has a flexible fluorocarbon chain shell, and according to the design, the mechanical strength of a coating is enhanced through a rigid framework of MOFs; the stress concentration is relieved by utilizing the flexibility of a molecular chain of the fluorosilicone oil. The modified metal organic framework material is further dispersed in a matrix composed of fluorine-containing epoxy resin and an amino fluorosilicone oil curing agent, a multi-layer micro-nano structure is formed through ultrasonic dispersion and spraying curing processes, and the super-hydrophobic coating is obtained. According to the coating, through the synergistic effect of fluorosilane grafting modification and a micro-nano structure, the excellent performance that the static water contact angle is larger than or equal to 155 degrees, the rolling angle is smaller than or equal to 4 degrees, the ice adhesion strength is smaller than or equal to 40 kPa, and the wear resistance is excellent is achieved.

The embodiment of the invention provides a carbon nanotube / fluorocarbon resin composite microsphere photo-thermal super-hydrophobic anti-condensation coating and a preparation method thereof.The preparation method comprises the steps that firstly, carbon nanotubes and fluorocarbon resin are evenly dispersed in a solvent, then a small amount of non-solvent water is added to enable a solution system to be subjected to phase separation, and carbon nanotube / fluorocarbon resin composite microsphere dispersion liquid is formed; and finally, spraying the carbon nanotube / fluorocarbon resin composite microsphere dispersion liquid, and curing to obtain the photo-thermal super-hydrophobic anti-condensation coating. The carbon nano tube is in a microsphere shape in the coating, so that a typical micro / nano coarse structure is obtained on the surface, the water drop contact angle of the coating is as high as 158 degrees, the icing delay time is as high as 434s, and the ice adhesion force is as low as 16kPa; under the irradiation of sunlight, the temperature of the coating can be increased to 54.5 DEG C within 10 minutes under the photo-thermal action of the carbon nanotubes, so that the melting of ice is accelerated.

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 discloses an anti-icing hydrophobic coating and a preparation method thereof, and belongs to the technical field of anti-icing hydrophobic coatings. Aiming at the problems of faults and safety risks caused by infrastructure icing in a cold and humid environment, the long-acting and durable anti-icing hydrophobic coating is developed, modified Ti3SiC2 / ZnO hybrid powder is innovatively introduced, and the powder is subjected to surface modification, is combined with CTAB modified ZnO and cooperates with other components to form a coating system; the anti-icing hydrophobic mechanism is based on nano rough knots constructed by powder, so that solid-liquid contact is reduced; fluorine-containing silane modification endows ultralow surface energy and weakens ice crystal adsorption; experiments show that the coating can promote water drops to roll off, obviously weaken ice adhesive force, promote the ice to fall off and improve anti-icing hydrophobic performance, has long-acting stability and strong environmental adaptability, and is suitable for severe environments such as severe cold and humid environments.

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.

The application discloses an aqueous anti-icing resin and a preparation method thereof, relates to the technical field of aqueous resins, and comprises the following steps: preparing an intermediate, then reacting deionized water, an emulsifier, monomers and an initiator, controlling the kettle temperature at 70-80 DEG C, continuously adding 60-80 parts by weight of the intermediate, 15-20 parts by weight of a modified filler and 100-120 parts by weight of deionized water, removing acetone in the system after 4-6 hours of heat preservation, adding 0.3-1.5 parts by weight of a regulator, cooling to room temperature, and filtering to obtain the product. The modified filler and the fluorine-containing resin are synergistically used through chemical grafting, the mechanical strength of the coating is obviously improved while the super-hydrophobicity is maintained, the icing time is prolonged, the ice adhesion is reduced, and the application is suitable for extreme outdoor environments.

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 present invention relates to the field of drone early warning technology, and in particular to a low-altitude drone intelligent early warning system and method based on multi-source data fusion. The system comprises: an acquisition module, an extraction module, a determination module, a type determination module, a level determination module, an adjustment module, and an early warning module. The present invention achieves accurate identification and intelligent early warning of ice adhesion disturbances during low-altitude drone flight in foggy weather by fusing multi-source data. By collecting parameters such as water vapor concentration, image information, and wake velocity, the flight environment and aircraft state can be comprehensively reflected, enhancing the system's sensitivity to interference conditions. Using characteristic parameters such as particle radius, distribution density, and ice area and thickness extracted from images, a multi-dimensional judgment basis for interference identification and graded judgment is established, effectively solving the problem of low early warning accuracy when dealing with complex flight interference caused by a single data source or static prediction model.

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 invention discloses an anti-icing self-supporting layer-stranded optical cable and a preparation method thereof, and the cross section of the anti-icing self-supporting layer-stranded optical cable is rhombic, and the anti-icing self-supporting layer-stranded optical cable comprises a cable core which is of a layer-stranded structure; the outer coating layer is coated outside the cable core; the reinforcers are arranged at corners of the cross section of the optical cable; and the nylon protective layer is coated outside the outer coating layer and the reinforcing piece. According to the invention, the rhombic cross section is matched with the nylon protection layer, so that the icing adhesion area is reduced, the ice layer is promoted to crack and fall off, the aerodynamic effect is achieved, and the low surface energy and smoothness, the weak ice layer binding force and the weather resistance are maintained; the rhombic structure reduces the icing opportunity and accelerates deicing, the nylon protection layer reduces the bonding strength of water and an ice layer, and the nylon protection layer and the water layer jointly achieve the anti-icing function of preventing adhesion and falling off easily; whether the all-dielectric nonmetal optical cable is manufactured or not can be selected according to requirements, and the practical value is higher; and the overall structure is simple, the design is ingenious, the preparation cost is low, the toughness and reliability of a communication network are improved, and the popularization and application value is high.

The invention relates to the technical field of coatings, in particular to a polysiloxane-containing long-acting anti-icing coating and a preparation method thereof. According to the coating, hydroxyl polysiloxane, tetraethoxysilane, fluorine chain modified cross-linkable core-shell silicon dioxide and the like are adopted as main raw materials, and efficient anchoring of a fluorine chain and molecular-level combination of an organic silicon matrix are achieved by constructing a graded core-shell structure with high binding energy. And meanwhile, a proper amount of dimethyl silicone oil (150-250 mPa.s) is introduced to cooperatively regulate and control the viscoelasticity and stress dispersion of the matrix, so that the long-acting anti-icing performance is improved. A strategy of first crosslinking and then fluorination is adopted, hydrophobic fluorine chains are gathered on the surfaces of nano particles, a compact cross-linked network is formed in the nano particles, and the mechanical strength, the wear resistance and the low-temperature impact resistance of the coating are effectively improved. The prepared coating not only obviously reduces the icing adhesive force, but also has excellent durability and repeated recycling performance.

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 material surface icing adhesion strength envelope line measurement experimental design methods, it includes the following steps: preparing target ice layer on the substrate to be measured;Obtain uniaxial tensile adhesion strength and uniaxial shear adhesion strength;In shear-tensile coupling state, the horizontal coordinate value and the vertical coordinate value of N first measured data points in the target ice layer and the interface adhesion strength envelope line of the substrate to be measured are obtained;Data fitting is carried out by inflection point-free distribution model and first inflection point distribution model, and the type of the interface adhesion strength envelope line of the target ice layer and substrate material is judged according to the goodness of fit of two distribution models;If it is inflection point-free envelope line, the inflection point-free curve corresponding to the uniform distribution model after fitting is used as the measured adhesion strength envelope line;If it is inflection point envelope line, again preset N second measured data points;And all data points are fitted using the second inflection point distribution model, and the measured envelope line is obtained.

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.