128 results about "Ice adhesion" patented technology

The invention relates to a photo-thermal super-hydrophobic multifunctional anti-icing coating as well as a preparation method and application thereof. The photo-thermal super-hydrophobic multifunctional anti-icing coating comprises primer and finish paint, the primer comprises the following raw materials in parts by weight: 20-25 parts of bisphenol A type epoxy resin and / or fluorine modified epoxy resin, 10-20 parts of fluorine modified polyacrylic resin and / or polyurethane resin, 5-10 parts of a curing agent and 40-55 parts of a solvent; the finish paint comprises the following components in parts by weight: 2-5 parts of polytetrafluoroethylene, 1-3 parts of soluble polytetrafluoroethylene, 1-5 parts of polydimethylsiloxane and 85-90 parts of fluorinated MOF dispersion liquid. Compared with the prior art, the photo-thermal super-hydrophobic multifunctional anti-icing coating provided by the invention has the characteristics of super-hydrophobicity, rapid ice melting, wear resistance, reduction of ice adhesion strength and reduction of icing amount, can effectively solve the problem of icing of an aluminum conductor of a power transmission line of a power system, and can be applied to power equipment such as the aluminum conductor of the power transmission line.

The invention provides a titanium nitride doped fluoride-free photo-thermal super-hydrophobic coating and a preparation method and application thereof.The titanium nitride doped fluoride-free photo-thermal super-hydrophobic coating is prepared from polydimethylsiloxane modified titanium nitride, hydrophobic nanoparticles and an adhesive and has the excellent local surface plasma resonance effect and photo-thermal effect; meanwhile, the coating is of a rough and uniform micro-nano hierarchical structure, dynamic water can be efficiently removed, icing can be delayed, the surface temperature can reach 12 DEG C only through irradiation of one sunlight intensity in the environment of-30 DEG C, and rapid deicing can be achieved. The coating has good functions of self-cleaning, anti-icing, deicing, defrosting and the like, renewable solar energy is utilized, and the coating is green, environment-friendly, energy-saving and emission-reducing. Meanwhile, the super-hydrophobic surface of the coating can effectively delay icing and inhibit ice adhesion. According to the coating, organic combination of an active deicing strategy and a passive deicing strategy is achieved based on the synergistic effect of the super-hydrophobicity and the photothermal effect.

The invention provides a modified single-component polyurea waterproof coating as well as a preparation method and application thereof and a hydraulic concrete protective coating structure, and relates to the technical field of hydraulic concrete protection. The modified single-component polyurea waterproof coating provided by the invention is prepared from the following raw materials by mass: polytetrahydrofuran polyol, polyether triol, fluorine-containing polyether polyol, FEVE type fluorocarbon resin, organic silicon polyether glycol, a water repellent agent, isocyanate, a defoaming agent, a diluent, a dispersing agent, a catalyst, a latent curing agent, a coupling agent, a water removal agent, a pigment filler, a thixotropic agent and a plasticizer. The modified single-component polyurea waterproof coating has excellent comprehensive mechanical properties, anti-icing adhesion performance and ice pulling resistance, and the problem of freezing injury is thoroughly solved; the surface roughness is low, the hydrophobicity is high, and resistance and roughness are reduced; the water resistance is high; the coating is high in adhesive force. The modified single-component polyurea waterproof coating is applied to cold region hydraulic concrete anti-freezing damage protection engineering, and the long-term operation protection performance is good.

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 a device and a method for measuring the ice adhesion strength of an elastic coating under the action of periodic external force. The device comprises a refrigeration module, an ice adhesion strength measuring module and a control system, in the refrigeration module, a cooling liquid channel is arranged in the test base, the cooling liquid channel is connected with a refrigerating unit, and temperature equalizing table temperature measuring points are arranged in the temperature equalizing table at equal intervals in the vertical direction; the ice adhesion strength measuring module comprises an elastic coating arranged on the surface of the temperature equalizing table and a mold placed on the surface of the elastic coating, the two sides of the mold are connected with teletransmission tension meters through pull wires respectively, and each teletransmission tension meter is arranged on the motion platform; the control system controls all the modules to work coordinately, adjusts the refrigerating capacity to control the surface temperature of the low-temperature test, controls the size and frequency of the periodic acting force, collects and records data and calculates the ice adhesion strength. According to the invention, measurement and influence mechanism research on the ice adhesion strength of the elastic coating surface under different temperature conditions under the action of periodic external force can be realized.

The utility model belongs to the technical field of ice-adhesion-resistant coatings, and particularly relates to an ice-adhesion-resistant coating adhesive force comparison test device which comprises a workbench, a base plate is coated with an ice-adhesion-resistant coating, a plywood is made to descend through a lifting assembly, the plywood is attached to the surface of the base plate, meanwhile, a first motor is used for driving a plurality of cams to rotate, and the adhesion force of the base plate is tested. And then the cam rotates to enable the jacking columns to move upwards and impact the bottom surface of the base plate, so that the base plate vibrates through the impact of the jacking columns on the base plate, bubbles in the ice-adhesion-resistant coating can be discharged along with vibration, after the coating is solidified, the plywood ascends, and then the tension sensor feeds back the tension, so that the ice-adhesion-resistant coating is formed. And then the adhesive force is obtained through a numerical value fed back by the tension sensor, and then the steps are carried out on various ice-adhesion-resistant coatings, so that an adhesive force comparison test can be carried out, and the effects of carrying out the adhesive force comparison test on the ice-adhesion-resistant coatings and conveniently discharging bubbles in the ice-adhesion-resistant coatings are achieved.

The present invention relates to the field of detection equipment technology, solving the technical problem in the prior art that sensors are still easily lost in severe icing conditions. In particular, it relates to an anti-icing sensor with a V-shaped concave-convex groove on the windward side. A temperature measuring end is provided on the side of the sensor housing away from the mounting seat. The temperature measuring end is provided with an anti-icing structure. The sensitive element is connected to the sensor housing and is located on the inner side or leeward side of the temperature measuring end. The cross-section of the windward end parallel to the airflow direction is an isosceles triangle. The first vertex of the isosceles triangle of the windward end faces the direction of the incoming flow. The groove at the front edge of the windward end has a V-shaped cross-section. As the flow direction extends, the groove width increases with a linear gradient and the groove depth decreases with a linear gradient, forming a continuous three-dimensional topological surface. The present invention uses the different affinity and repellency surface properties of the concave-convex steps to break up water droplets and even water films, accelerate the flow of water droplets in the groove, reduce the overall ice adhesion of the windward end surface by nearly half, and greatly reduce the damage of ice to downstream components.

The invention discloses a halogen-free low-volatility anti-icing photo-thermal super-hydrophobic coating for the surface of a wind power blade and a preparation method thereof. The coating is prepared by compounding functionalized modified multi-walled carbon nanotubes, functionalized modified nano titanium nitride, polydimethylsiloxane / nano silicon dioxide modified epoxy resin and a curing agent. Wherein the multi-walled carbon nanotubes are subjected to amidation and dual functionalization of lauric acid and 3-aminopropyl triethoxy silane; the surface of the nano titanium nitride is uniformly modified through bionic polydopamine coating; hydroxyl-terminated polydimethylsiloxane and nano SiO are doped into an epoxy resin base material, so that the system is endowed with low surface energy and high weather-resistant binding force. After curing and film forming at room temperature for 24 hours or at 80 DEG C for 2 hours, the water contact angle is greater than or equal to 155 DEG C, the ice adhesion strength is less than or equal to 10 kPa, the photo-thermal temperature is greater than or equal to 40 DEG C, and the performance is not attenuated after 50 times of heating and cooling tests; and after 150-hour damp heat, 500-hour ultraviolet radiation, acid corrosion and abrasive paper friction, the coating does not blister or fall off. The coating disclosed by the invention is green and environment-friendly, low in curing energy consumption, high in photo-thermal temperature rise and strong in super-hydrophobic durability, and can be used for remarkably improving the long-term anti-icing capability of wind power blades in cold and high-humidity regions.

The invention provides a low-energy-consumption mechanical anti-icing and de-icing device and method and an aircraft skin structure, and the device comprises a passive anti-icing part which comprises an elastic interlayer, and the elastic interlayer is used for being adhered to the first side face of a skin of an aircraft; the elastic interlayer at least comprises a lubricating material capable of reducing the ice adhesion strength; the active deicing part comprises a force applying device, and the force applying device faces the second side face, away from the first side face, of the skin; wherein the aircraft is frozen to form an ice layer-elastic interlayer-skin three-layer structure under the freezing condition, the force application device applies stress load to the second side face of the skin, and the ice layer is actively induced to be broken; through deformation of the elastic interlayer, stress load is concentrated on the ice layer, critical fracture displacement needed for inducing fracture of the ice layer is passively reduced, and meanwhile, through the anti-adhesion effect of the elastic interlayer, the fractured ice layer is promoted to fall off from the elastic interlayer. Through the device provided by the invention, efficient deicing with low energy consumption, repeated use and no damage to the skin structure is realized.

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 the technical field of ice making, and provides an ice making method and an ice maker, the ice making method comprises the following steps: S1, executing an ice making working condition; s2, after ice making is finished, water in the ice making container is discharged, and an ice making program is continuously operated; and S3, executing a deicing working condition. According to the ice making method, the problem of ice block adhesion is effectively solved through the step of prolonging the refrigeration time after ice making is finished, the ice unloading convenience is improved, potential damage to the ice making device caused by ice block adhesion is reduced, the service life of the ice making device is prolonged, complex equipment or mechanisms do not need to be introduced, and the cost is reduced. And the method can be realized only by adjusting the running time of the ice-making program, so that the cost is low and the implementation and popularization are easy.

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 invention relates to an anti-icing steel cable, an anti-icing steel cable power supply control device and a bridge. The anti-icing steel cable sequentially comprises a steel cable base, insulating primer, an electric heating layer and a low-ice adhesion outer layer from inside to outside, and the electric heating layer is composed of a conductive heating base body, a positive electrode and a negative electrode, the positive electrode and the negative electrode extend to the two ends of the anti-icing steel cable in the length direction of the anti-icing steel cable. The conductive heating matrix is composed of a flexible resin matrix and a conductive heating material dispersed in the flexible resin matrix, and the conductive heating material forms a conductive heating network in the flexible resin matrix. When the anti-icing steel cable is not frozen, the low-ice adhesion outer layer of the anti-icing steel cable can reduce accumulation of water on the surface of the anti-icing steel cable, prevent or reduce icing and reduce the adhesion strength of ice on the surface of the anti-icing steel cable; and after icing, the power supply is started to supply power to the anti-icing steel cable, the electric heating layer is heated to remove a small amount of ice adhered to the outer layer, the required energy consumption is low, and the anti-icing and deicing cost is low.

The present invention discloses a superhydrophobic anti-icing surface based on a super-elliptical topological structure and a preparation method thereof. The superhydrophobic anti-icing surface includes a super-elliptical topological structure substrate and a superhydrophobic coating; the micro-structure of the super-elliptical topological structure substrate has a protection function, protecting the internal superhydrophobic coating from being damaged by impact or worn by friction and becoming ineffective; the superhydrophobic coating has a nanostructure with intrinsic superhydrophobicity, which can reduce the solid-liquid contact area and weaken the solid-liquid heat transfer, thereby delaying icing and reducing ice adhesion, and having anti-icing performance. The superhydrophobic anti-icing surface of the present invention has long-lasting and mechanically robust superhydrophobicity. By using the super-elliptical topological micro-structure to protect the superhydrophobic nanostructure, the problems of poor mechanical robustness and non-abrasion resistance of the superhydrophobic surface are solved, and the long-lasting property and durability of the superhydrophobic surface are enhanced, and it can be applied to fields such as aerospace, energy, and transportation.

The invention relates to the technical field of unmanned aerial vehicle early warning, in particular to a low-altitude unmanned aerial vehicle intelligent early warning system and method based on multi-source data fusion, and the system comprises a collection module, an extraction module, a judgment module, a type determination module, a grade determination module, an adjustment module and an early warning module. According to the invention, accurate identification and intelligent early warning of ice layer adhesion disturbance of the low-altitude unmanned aerial vehicle flying in foggy days are realized by fusing multi-source data, the flight environment and the state of the unmanned aerial vehicle can be comprehensively reflected by collecting parameters such as water vapor concentration, image information and wake flow speed, and the sensitivity of the system to the interference state is enhanced; according to the method, feature parameters such as particle radius, distribution density, ice layer area and thickness extracted from images are utilized to construct a multi-dimensional judgment basis of interference identification and grading judgment, and the problem of low early warning accuracy when complex flight interference is dealt with due to a single data source or a static prediction model is effectively solved.

The invention discloses an ice adhesion strength testing device suitable for a lead, and relates to the technical field of power transmission lead maintenance, the ice adhesion strength testing device comprises a supporting unit, the supporting unit comprises a base, supporting frames, an adjusting rail and a bearing frame, the supporting frames are symmetrically fixed at the top of the base, two ends of the adjusting rail are respectively fixed with the tops of the supporting frames at two sides, and the bearing frame and the adjusting rail are arranged in parallel; two ends of the support frame are movably connected with the support frames on two sides; the testing unit comprises a cooling table, an icing mold and a bonding strength detector, the cooling table is fixed at the bottom of the bearing frame, the icing mold is movably mounted at the top of the bearing frame, and the bonding strength detector is detachably fixed at the top of the bearing frame; and the fixing unit comprises a width adjusting clamp and a tightening clamp, the width adjusting clamp is symmetrically and movably installed on the adjusting rail, and the tightening clamp is movably installed at the top of the width adjusting clamp. The problems that according to an existing testing device, when wires of different models are tested, fixing clamps need to be disassembled and assembled frequently, and the operation process is tedious are solved.

The invention provides a photovoltaic module anti-icing and defrosting structure based on a composite coating and a control method thereof, a system comprises a control unit, and a super-hydrophobic coating, a metal electrode layer, a phase change energy storage layer and a selective radiation layer which are sequentially laminated on the surface of photovoltaic glass, and the metal electrode layer is electrically connected with a pulse power supply. The control method comprises the following steps: M1: daytime working mode: the selective radiation layer radiates the heat of the photovoltaic module into the air to reduce the surface temperature of the photovoltaic module and reduce moisture condensation; m2: a night frost prevention mode: when the temperature is reduced to-2.5 DEG C, the phase change energy storage layer releases latent heat, and the frosting speed is delayed for 2-3 hours; due to the surface contact angle of the super-hydrophobic coating, water drops are difficult to stay and nucleate, and the ice adhesive force is less than 50kPa; and M3, a pulse deicing mode: when the thickness of the ice layer is detected to be greater than or equal to 0.2 mm, the current of a pulse power supply passes through a metal electrode layer, and instantaneous temperature rise is generated on an ice-glass interface, so that the ice layer is stripped. According to the system, multiple coatings are cooperated, so that the energy consumption is greatly reduced while the deicing and demisting effects are ensured.

The invention discloses a fuel oil pipeline inner wall coating icing adhesive force test device, and belongs to the technical field of pipeline inner wall coating icing adhesive force. A fuel oil pipeline inner wall coating ice coating adhesive force testing device comprises a working box, the working box is divided into a working cavity and a containing cavity through a partition plate, a movable flat plate is slidably connected into the working cavity, an atomization nozzle is arranged at the bottom, extending to the movable flat plate, of the movable flat plate, and the spraying end of the atomization nozzle faces the inner wall of a pipeline. A liquid supply mechanism and an intermittent pressurization mechanism are arranged in the containing cavity, the output end of the liquid supply mechanism communicates with the input end of the intermittent pressurization mechanism, and the output end of the intermittent pressurization mechanism communicates with the atomization nozzle; the coating can be more uniformly attached to the inner wall of the fuel oil pipeline in the spraying process, the spraying quality is improved, a smooth and uniform coating can be formed, meanwhile, the simulation capacity of a low-temperature and ice layer composite environment can be improved, and the test result of the icing adhesive force of the coating can be true.

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 present invention relates to the technical field of anti-icing coatings, and in particular to a method for preparing a soft-hard composite anti-icing coating with low ice adhesion, comprising: step S1.1, weighing the following raw materials in parts by weight: 75-90 parts by weight of a modified epoxy resin, 10-25 parts by weight of an acrylic resin, 6-8 parts by weight of vinyl-terminated polydimethylsiloxane, 1-3 parts by weight of a hydrogenated silicone oil, 0.5-1 parts by weight of a platinum catalyst, 0.8-1.2 parts by weight of an emulsifier, 5-10 parts by weight of coconut shell activated carbon, 10-25 parts by weight of an octadecyltriethoxysilane, and 10 parts by weight of an octadecyltriethoxysilane. 1-13 parts by weight, 0.4-0.8 parts by weight of dibutyltin dilaurate, 8-12 parts by weight of isophorone diamine, 7-9 parts by weight of polydimethylsiloxane and 1-3 parts by weight of aliphatic polyisocyanate; modified epoxy resin is prepared from bisphenol A epoxy resin, o-trifluoromethylphenylethylamine and 1-aminobenzotriazole; S1.2, preparation of soft particles; S1.3, preparation of hard particles; S1.4, preparation of coating; the use of modified epoxy resin improves the anti-icing, wear resistance and durability of the anti-icing coating.

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.