64results about How to "Improve ice resistance" patented technology

The present invention provides methods for use of novel deicing and anti-icing compositions based on by-produce of off-specification materials from biodegradable and renewable sources and which also can be used in a variety of other services.

The invention discloses a no-lightning-conductor power transmission line design method for a heavily icing region, and the method comprises the steps: reconstructing a pole and a lightning conductor; obtaining the parameters and historical data of a reconstructed line; replacing a common insulator of the reconstructed line with an icing flashover resistant composite insulator with an anti-thunder function; carrying out the simulation analysis of the icing flashover resistant composite insulator with the anti-thunder function, and determining an external structure of the icing flashover resistant composite insulator and the parameters of a zinc oxide valve block of the insulator; carrying out testing; and completing the no-lightning-conductor power transmission line design for the heavily icing region. The method prevents the breakage of an icing lightning conductor from causing a line outage accident, greatly reduces the construction cost of a power transmission line, and facilitates the construction and installation of a line and a pole. The icing flashover resistant composite insulator with the anti-thunder function is employed in the method, and the insulator can be resistant to thunder and icing flashover, thereby improving the capability of resisting ice disasters and thunder disasters of the power transmission line, and guaranteeing the stable operation of the line. Moreover, the installation is simple and convenient, and the original structure of the pole does not need to be changed, thereby saving the cost in equipment selection and power grid construction.

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

The invention discloses a fluorine-modified aspartic polyurea coating and a preparation method thereof, and relates to the technical field of synthetic coatings. The fluorine-modified aspartic polyurea coating is prepared by creatively combining the advantages of aspartic polyurea and a fluorocarbon coating, the fluorine-modified aspartic polyurea coating prepared from fluorine-modified fluorine-containing polyaspartic acid ester resin can be applied wind power blades, can significantly improve the glass transition temperature, improves the high temperature resistance of a coating film, and further improves the anti-aging, anti-light loss an d anti-tarnish properties at high temperature, the water contact angle of the coating surface is reduced, the wetting and erosion of water to the coating film can be reduced, the resistance to the water is improved, and the ability to resist ice coating is improved when the wind turbine blades are operated in a low temperature and high humidity environment.

The invention provides an amphiphilic anti-freeze molecule based on silsesquioxane, a preparation method thereof and an anti-icing surface material and belongs to the technical field of anti-icing surface materials. The invention solves the problem of an instable anti-icing effect of an anti-icing surface material in the prior art. The amphiphilic anti-freeze molecule is prepared by combining the silsesquioxane with an anti-freeze protein or an anti-freeze polypeptide. The invention also provides the preparation method of the amphiphilic anti-freeze molecule based on silsesquioxane. The method includes the steps of preparing the silsesquioxane having reactive groups and hydrophobic groups, and performing a coupling reaction to combine the silsesquioxane with an anti-freeze protein or anti-freeze polypeptide to prepare the amphiphilic anti-freeze molecule based on the silsesquioxane. The invention also provides the anti-icing surface material prepared from the amphiphilic anti-freeze molecule based on the silsesquioxane. The anti-icing surface material has the anti-icing characters of both a hydrophobic material and a hydrophilic material, enlarges a temperature window of the anti-icing surface material and is improved in anti-icing performance.

The invention discloses a preparing method of a super hydrophobic coating with a photothermal effect. The preparing method comprises the following steps that 1, dehydrated polycarbonate diol and toluene diisocynate are synthesized under catalysis of dibutyltin dilaurate to obtain prepolymers, and the prepolymers react with perfluorooctanoic alcohol to obtain fluoro-modified polyurethane; 2, the fluoro-modified polyurethane and prussian blue are subjected to ultrasound dispersion to be even and then are applied or sprayed onto a base material, and after drying, the super hydrophobic coating isobtained. According to the preparing method, the fluoro-modified polyurethane synthesized by a specific method is compounded with the prussian blue, so that the prepared super hydrophobic coating hasgood hydrophobic performance and an excellent photothermal effect, and the ice resistance and deicing performance of the coating are improved. The preparing method is simple, no special equipment is needed, the cost is low, and thus the super hydrophobic coating is suitable for industrial production. The invention further discloses application of the super hydrophobic coating with the photothermaleffect in the fields of ice resistance and deicing.

The invention relates to a forming method of an anti-icing array structure on the surface of a thermosetting resin-based composite material. An anti-icing array on the surface of the thermosetting resin-based composite material is prepared by designing an anodic aluminum oxide template structure and adjusting forming parameters of the composite material. The forming method has the beneficial effects that the forming method of the anti-icing array structure on the surface of the thermosetting resin-based composite material is simple in manufacturing process, the manufactured composite materialis complete in surface micro-nano structure, stable in size and high in structural consistency, the super-hydrophobic characteristic is achieved on liquid water, the super-cooled liquid drop icing time can be remarkably prolonged, and supercooled liquid drops have enough time to be separated from the surface; the extremely low ice adhesion strength is achieved, and an ice coating can fall off fromthe surface under the action of natural wind or gravity; and the anti-icing array structure can be used for machine outer surfaces such as aircrafts and wind driven generator blades which are exposedin an extreme environment, and important significance on development of ice prevention and removal technologies of equipment such as wind driven generators, novel high-speed railway motor train unitsand airplanes, in particular to passive ice prevention and removal technologies is achieved.

The invention provides polyurethane paint. The polyurethane paint is prepared from main components as follows: hydroxyl-terminated branched polyester resin, hydroxyl perfluoropolyether resin and perfluoropolyether lubricating oil. Fluorine atoms are introduced into polyurethane, perfluoropolyether is adopted, surface energy of a coating is reduced, the water contact angle can reach 105 degrees, the rolling angle is reduced to 19 degrees, and accordingly, anti-icing performance of the coating formed by the paint is improved; weather resistance is good, especially, low-temperature resistance isgood, and wear resistance and corrosion resistance are also improved.

The invention discloses insulator anti-icing coating and a preparation method thereof. The anti-icing coating is prepared from the following components in parts by mass: 35-45 parts of fluorosiliconeresin, 4-5.5 parts of aluminum oxide, 6-8 parts of silicon dioxide, 2-3 parts of titanium dioxide, 0.3-0.8 part of dispersing agent, 0.4-0.9 part of surfactant, 0.2-0.9 part of de-foaming agent, 0.1-0.5 part of catalyst, 0.02-0.08 part of anti-oxidant, 0.2-0.8 part of curing agent and 30-50 parts of solvent PMA. The preparation method comprises the following steps: separately adding aluminum oxide, silicon dioxide and titanium dioxide into the surfactant, adding absolute ethyl alcohol, stirring until completely wet while adding, ultrasonically stirring and dispersing, drying, wetting and drying by distilling through PMA, stirring and dispersing after mixing fluorosilicone resin with residual PMA, pouring all system solution into a grinder to grind, pouring the de-foaming agent, the anti-oxidant and the catalyst into the grinder to disperse, adding the curing agent to disperse, thereby obtaining anti-icing coating. The anti-icing coating is remarkably improved in hydrophobicity performance, is good in anti-ice effect on a power transmission line, and has surface-drying time, volume resistivity and dielectric strength, which meet standards.

The invention relates to a de-icer or anti-icer composition for a travelled surface comprising: at least about 25% w/w of at least one acetate salt; and from about 14% to about 50% w/w of at least one non-acetate salt wherein the total concentration of said at least one acetate salt and said at least one non-acetate salt in the de-icer or anti-icer composition is at least about 57% w/w. The acetate salt can be selected from the group comprising potassium, sodium, lithium, magnesium, calcium, ammonium acetate or mixtures thereof. The non-acetate salt can selected from the group comprising one or more cations selected from the group consisting of potassium, sodium, lithium, magnesium, calcium, ammonium or mixtures thereof and one or more anions selected from the group consisting of formate, propionate, butyrate, isobutyrate, oxalate, malonate, succinate, glutarate, adipate, citrate, gluconate, benzoate, carbonate, bicarbonate, fluoride, chloride, bromide or mixtures thereof. The balance can be solvent and optionally not more than about 5% w/w in total of one or more auxiliary or incidental additives.

The invention discloses fluorine-containing polyaspartic acid ester resin and a synthesis method thereof and relates to the technical field of synthetic resin. The method is mainly characterized in that a fluorine-containing group is introduced on the basis of an existing polyaspartic acid ester resin system, that is, fluorine is used for modification. Thus, fluorocarbon bonds in the resin can reduce surface tension, improve water contact angle, enhance the hydrophobic property of a material and improve surface pollution resistance and icing resistance. Besides, fluorine atoms and carbon-carbon bonds form a spiral structure having a shielding effect on a main chain, so that in the molecular structure, besides the coronary structure of polyaspartic acid ester, more spiral structures can further improve the protection effect on the main chain, and the risk of damage of the main chain is reduced through dual insurance. The resin is particularly suitable for preparation of high-performanceanticorrosive coatings resistant to wear, aging, gloss loss, color change, high temperature and the like.

The invention relates to an aluminum cable steel reinforced for a power grid overhead transmission line, wherein the aluminum cable steel reinforced is low in cost, large in current-carrying capacity, good in anti-corrosion performance, high in strength, non-magnetic and low in loss. According to the technical scheme of the invention, the aluminum cable steel reinforced for the power grid overhead transmission line comprises a tensile core body and a conductor. The conductor is composed of a plurality of electrical aluminum conductor wires. The aluminum cable steel reinforced is characterized in that the tensile core body is composed of a plurality of non-magnetic stainless steel wires and the steel wires are twisted into strands. The Mn content in the non-magnetic stainless steel of the non-magnetic stainless steel wires is 10-15%, and the Ni content thereof is smaller than 5%. The N content in the non-magnetic stainless steel of the non-magnetic stainless steel wires is 0.3-0.4%. the aluminum cable steel reinforced for the power grid overhead transmission line is applied to the power engineering field.

The invention discloses an alternating current transmission line iron tower which comprises a tower body and a cross arm at the top end of the tower body. The middle and the two ends of the lower side of the cross arm are each connected with a lightning-proof insulator. The lower ends of the lightning-proof insulators at the two ends are each connected with a side phase conductor. The lower end of the lightning-proof insulator in the middle is connected with a middle phase conductor. A compound fiber overhead ground wire is arranged on the waist of the tower body. The conductors are suspended on the lightning-proof insulators, so that the alternating current transmission line iron tower has the functions of suspension, insulation and lightning prevention at the same time. When ground lightning directly strikes the tower or the conductors, the lightning overvoltage will make the lightning-proof insulators move, impact energy is absorbed, the overvoltage is suppressed so as to protect the insulators against flashover, tripping of a transmission line is avoided, and power supply reliability is improved; the compound fiber overhead ground wire is located below the three phase conductors, so that the normal power communication function is achieved, the lightning overvoltage on the lightning-proof insulators can be decreased due to the coupling effect, the lightning-proof level is further improved, the lightning tripping frequency of the transmission line is effectively decreased, and the power supply reliability is improved.

The invention discloses a novel live ice melting device which comprises a DC blocking device, a DC ice melting device, a first Zigzag winding and a second Zigzag winding. The DC blocking device is installed at the two ends of a line under ice melting and isolates the ice melting direct current loaded on the line under ice melting. The positive output end of the DC ice melting device is connected with the neutral point of the first Zigzag winding, and the negative electrode of the DC ice melting device is directly grounded. The output end of the first Zigzag winding is connected with one end ofthe line under ice melting. The output end of the second Zigzag winding is connected with the other end of the line under ice melting, and the neutral point of the second Zigzag winding is directly grounded. The invention also discloses an ice melting method of the novel live ice melting device. The live ice melting can be realized for any loop, the line does not lose power during ice melting, the modification of the line during ice melting is minimal, protection, control and stability of the AC system are basically not affected, the reliability is high and the use is simple and convenient.