158results about How to "Good anti-icing effect" patented technology

The invention discloses preparation of a super-hydrophobic ice-covering-proof coating having a slowly-releasing function. The ice-covering-proof coating consists of the following substances in parts by mass: 1.5-5 parts of inorganic hollow or porous nanoparticles for adsorbing small molecular anti-icing substances, 2-5 parts of fluorine-containing polymer and 1-15 parts of solvent. The super-hydrophobic ice-covering-proof coating having the slowly-releasing function can be obtained by uniformly mixing the three substances and coating the mixture onto the surface of a substrate. At the normal temperature, the water contact angle of the coating is greater than 150 degrees, and the rolling angle is smaller than 7 degrees. At 10 DEG C below zero, the low-temperature contact angle of water is greater than 140 degrees, and the rolling angle is smaller than 12 degrees. During testing of the ice cover at 10 DEG C below zero, the ice cover is lowered by over 70 percent, and is still higher than 50 percent after testing is performed circularly for ten times in comparison to a blank sample.

The invention discloses a preparation method of a super-hydrophobic coating layer on an aluminum surface. The preparation method mainly comprises the following steps: (1) an aluminum piece is polished by an abrasive paper, is ultrasonically cleaned for 10 minutes by acetone and ethanol, is washed by distilled water to remove oil stains on the surface, and is dried in an oven; (2) the aluminum piece is dip in an acid etching agent for etching to obtain the aluminum surface with a micron rough structure; (3) the micron rough aluminum piece is dip in nanometer TiO2 particle solution, and is treated at high temperature to obtain the aluminum surface with a micron-nanometer composite rough structure; and (4) the aluminum surface with the micron-nanometer composite rough structure is treated by fluorine silane with low surface energy to obtain the aluminum surface with super-hydrophobic performance. The prepared super-hydrophobic aluminum piece is excellent in self-cleaning performance, fog resistance and ice covering resistance, and can be applied to field of ice covering prevention.

The invention provides preparation methods of a two-component waterborne wear-resisting and low-ice-adhesion anti-icing coating and a coating layer thereof. The two-component waterborne anti-icing coating is composed of a component A containing a core-shell structure polymer emulsion and inorganic nanoparticles and a component B containing a curing agent. An outer layer of the core-shell structure polymer emulsion in the component A of the anti-icing coating is a hydrophilic shell layer, so that polymer emulsion particles can be stably dispersed in water, and the advantages of being green and environmentally friendly are provided. The inorganic nano particles in the component A are rigid particles, can improve the mechanical properties of the anti-icing coating layer, endow the coating layer with excellent wear resistance and prolong the service life of the coating layer. After the coating is cured into a film, the hydrophilic shell layer of the polymer emulsion particles can absorb moisture, and thus a water lubricating layer is formed on the surface of the coating layer; when the coating layer surface is iced, due to the existence of the water lubricating layer, the acting force between ice and the coating layer is decreased, besides, the substrate surface roughness is also reduced, and the contact area between the ice and the substrate is decreased.

The invention discloses a preparing method for an aluminum surface super-hydrophobic coating with a micro-nano composite structure. The method mainly comprises the steps that firstly, an aluminum sheet is ultrasonically cleaned for 10 min through acetone and methylbenzene and then flushed thoroughly through distilled water, and the aluminum sheet is dried in an oven at the temperature being 100 DEG C; secondly, the cleaned and dried aluminum sheet is immersed in an acid etching agent to be etched, and an aluminum surface with a micron rough structure is obtained; thirdly, after the etched aluminum sheet is ultrasonically cleaned thoroughly, the aluminum sheet is immersed in a nano particle solution, and after the aluminum sheet is treated at the high temperature, an aluminum surface with a micro-nano composite rough structure is obtained; and fourthly, after low-surface-energy fluorosilicone modified polyester resin is sprayed to the aluminum surface with the micro-nano composite rough structure, an aluminum surface with super-hydrophobic performance can be obtained. The super-hydrophobic aluminum sheet prepared through the preparing method has the superior icing preventing performance and very good mechanical strength and can be applied to an air conditioner heat exchange sheet, and frosting and icing of the heat exchange sheet are effectively restrained.

An engine gas inlet duct anti-icing system comprises a heat exchange passage, a gas guiding pipe, an annular gas distribution pipe and a gas exhausting pipe. The annular gas distribution pipe is arranged in the heat exchange passage, an opening hole is formed in the annular gas distribution pipe, and one end, close to an inlet of a gas inlet duct, of the gas guiding pipe is connected with the opening hole. The annular gas distribution pipe has a throat and a lip mouth; the lip mouth extends along the inlet direction of the gas inlet duct; an adjustable guide vane grid is arranged on the lip mouth, a certain angle is formed between the adjustable guide vane grid and the middle face of the gas inlet duct, and the angle of the guide vane grid is adjusted by a driving mechanism. The engine gas inlet duct anti-icing system can control the flow rate and the flow direction of hot air aiming at different anti-icing conditions, so that a best anti-icing effect can be realized under different anti-icing conditions and different gas inlet duct positions.

The invention relates to an electric lifting rod, which comprises a driving device and a lifting device, wherein the driving device comprises a driving motor, a reduction box and a hand-cranking box; the lifting device comprises a base, casing pipes and a transmission structure; and the casing pipes and the transmission structure are both connected to the base. The electric lifting rod is characterized in that the transmission structure is set into a rolling spiral transmission structure, and the transmission structure comprises lead screws and nuts cooperatively and fixedly connected with the lead screws. The relative displacement of the casing pipes of the electric lifting rod disclosed by the invention is lead screw and nut transmission, other transmission modes, such as steel wire ropes, are omitted, and the electric lifting rod has the advantages of big load bearing capability, high reliability and safety, simple transmission structure and convenience in disassembling and maintaining, and multi-section lead screws are in invaginating transmission.

The invention discloses a preparation method of a super-hydrophobic aluminum surface with a freezing prevention performance. The method comprises the following steps: firstly, an abrasive paper is used for polishing a pure aluminum surface to remove oil stains and an oxide layer on an aluminum base surface; then, hydrochloric acid solution is adopted to etch the aluminum base surface to etch out arough structure on the aluminum surface; and finally, stearic acid anhydrous ethanol solution is used for processing to reduce the aluminum base surface energy to obtain the super-hydrophobic aluminum surface. Reagents adopted by the preparation method are common reagents and easy to prepare; such laboratory common devices as ultrasonic cleaners, electronic scales, drying boxes, water bath stirrers and the like are only needed; the method is simple and feasible; the production cost is greatly reduced; the average contact angle of the prepared aluminum base surface is more than 150 degrees; the surface adhesion is weak; water drops are easy to roll down from the surface; the excellent freezing prevention performance is achieved; and the unexpected technical effects are achieved.

The invention relates to an anti-icing cable applicable to ice rain atrocious weather and matched auxiliary facilities with anti-icing property. The anti-icing cable of the invention is characterized in that the cable is sleeved with an anti-icing sleeve, a clearance is reserved between the inner surface of the anti-icing sleeve and the surface of the cable, and the anti-icing sleeve can rotate relative to the cable. An insulating bottle for field power transmission is characterized in that the easy-icing surface of the insulating bottle is provided with the anti-icing sleeve. An anti-icing field metal tower body is characterized in that the surface of an easy-icing part of the tower body is provided with an anti-icing element. A method for arranging the anti-icing sleeve or the anti-icing element on the easy-icing part of the cable, the insulating bottle or the tower body effectively prevents the surface from icing, greatly reduces the heat exchange with the outside, and effectively prevents the icing phenomenon caused by heat absorption after rainwater is directly contacted with the cable, the insulating bottle or the tower body.

The invention discloses a nano-composite superhydrophobic icing-proof coating material. The nano-composite superhydrophobic icing-proof coating material comprises the following components in percentage by mass: 5-50% of fluorine-containing acrylate copolymer-modified inorganic nanoparticles and 50-95% of an organic solvent. A preparation method for the nano-composite superhydrophobic icing-proof coating material comprises the following steps: uniformly mixing nano-SiO2, methylbenzene and 3-aminopropyl triethoxysilane, and performing refluxing reaction in an oil bath to obtain amino-modified SiO2-NH2 inorganic nanoparticles; uniformly mixing the SiO2-NH2, dichloromethane, triethylamine and 2-bromoisobutyryl bromide, and reacting in an ice-water bath to obtain 2-bromoisobutyryl bromide-grafted nanoparticle SiO2-NH-Br; uniformly mixing the SiO2-NH-Br, an acrylate monomer, fluorine-containing acrylate, CuX, methylbenzene and a ligand, deoxidizing, precipitating, performing centrifugal separation, and dissolving a product into the organic solvent to obtain the nano-composite superhydrophobic icing-proof coating material. The nano-composite superhydrophobic icing-proof coating material has excellent performance, lasting low surface energy and superhydrophobicity, and good icing-proof performance and has the effect of prolonging the icing time, and can be widely used for prevention and control of icing on the surfaces of communication lines, fan blades, airport facilities, airplane wings and the like.

The invention discloses high-performance wind-power generating facility coating prepared by taking organic fluorinated silicone modified elastic polyurethane-urea resin as substrate. The high-performance wind-power generating facility coating is prepared from component A and component B according to proportion. The wind-power generating facility coating has toughness, attrition resistance, high elasticity, excellent mechanical property, yellowing resistance, good colour retention, high ultraviolet resistance, high weather resistance, favorable and excellent electrical insulation, chemical stability, moisture resistance and freeze resistance. In addition, the wind-power generating facility coating has high performance and moderate cost and can strongly protect the wind-power generating facility, reduce the maintenance frequency and lower the purchasing cost of the wind-power generating facility, thereby having extremely high implementation value and social and economic benefit.

The present invention discloses an offshore large-diameter pile foundation with an ice-resistant structure. The offshore large-diameter pile foundation with the ice-resistant structure comprises a plurality of ice-resistant standard parts that are welded in a circle symmetrically and uniformly around the pile foundation made of steel. A primary stiffened plate and upper and lower secondary stiffened plates are arranged through the plurality of ice-resistant standard parts. The plurality of ice-resistant standard parts, the primary stiffened plate, and the upper and lower secondary stiffened plates are connected and fixed to form the ice-resistant structure. The ice-resistant standard parts provided by the present invention are each provided with icebreaking blades, such that concentrated stress is produced on sea ice, and the sea ice thus is easy to break; the icebreaking blades are each in an inwardly recessed arc shape, which is also conducive to breaking sea ice; ice blocking lugs force sea ice to turn over and fall off, and prevent the sea ice from contacting with the pile foundation; moreover, the ice-resistant standard parts are distributed axisymmetrically around the pile foundation, and can resist the effect of sea ice in any direction.

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

The invention relates to a deicing and anti-icing fluid, particularly a non-Newtonian fuselage deicing and anti-icing fluid and a preparation method thereof. The non-Newtonian fuselage deicing and anti-icing fluid can reduce adhesion of ice on the object surface to eliminate and prevent icing on the aircraft fuselage surface, and has superlong anti-icing retention time. The non-Newtonian fuselage deicing and anti-icing fluid comprises the following components in parts by mass: 40-60 parts of freezing-point depressant, 0.05-1.2 parts of rheologic modifier, 0.01-0.3 part of anti-icing compounding agent, 0.01-3 parts of pH regulator, 0.01-3 parts of corrosion inhibitor, 0.01-0.5 part of staining agent and 40-60 parts of deionized water. The invention is based on the low-temperature rheologic research, especially aims at the low-temperature operating environment and characteristics of the deicing and anti-icing fluid, and determines the distribution and arrangement of the main chain and branch chain of the rheologic modifier as well as the preparation and acquisition method of the low-temperature conformation. By combining the anti-icing compounding agent, corrosion inhibitor and other assistants in the formula, the prepared deicing and anti-icing fluid has the characteristics of excellent shearing restorability, excellent ice adhesion inhibition capacity at 0 to -20 DEG C, and long anti-icing time.