42 results about "Eutectic system" patented technology

Designed in the present disclosure are a high-strength aluminum-erbium alloy for additive manufacturing and a preparation method therefor. The alloy comprises: 4-20 wt% of erbium (Er); 2-10 wt% of magnesium (Mg); less than or equal to 1 wt% of manganese (Mn); optionally, 0-1 wt% of scandium (Sc); and optionally, 0-1 wt% of zirconium (Zr). In the present disclosure, in order to improve both the formability and the mechanical properties of the alloy, based on alloy composition design assisted by a phase diagram calculation method, an Al-Er eutectic system is selected to reduce a solidification interval and form a fine grain phase, and therefore the technical effects of structure refinement, no thermal cracks and good printing performance are achieved; and in particular, a continuous cellular FCC configuration Al3Er eutectic network structure with a plastic deformation capability is introduced, with a size in the order of hundreds of nanometers, and therefore both strengthening and toughening effects are achieved. The aluminum-erbium alloy has both good printing formability and comprehensive mechanical properties, and the preparation method therefor is proven, has low costs and high efficiency, and can be used for large-scale industrial production.

The invention discloses a preparation method of ultra-smooth low-expansion ceramic glaze for in-situ generation of cordierite, bismuth oxide and antimony oxide are introduced into a high-potassium low-sodium system to form a K-Mg-Sb-Bi multi-element eutectic system, so that the low thermal expansion property and the smooth property of the glaze are realized; in-situ precipitation of cordierite microcrystals in a glaze glass phase is more successfully guided, so that a ceramic glaze surface with excellent comprehensive performance is obtained.

The present invention designs a high-strength aluminum-erbium alloy for additive manufacturing and a preparation method thereof. The alloy contains: 4-20wt% erbium (Er); 2-10wt% magnesium (Mg); less than or equal to 1wt% manganese (Mn); optionally, 0-1wt% scandium (Sc); optionally, 0-1wt% zirconium (Zr). The present invention aims to simultaneously improve the alloy's forming performance and mechanical properties. Based on the phase diagram calculation method to assist in alloy composition design, the Al-Er eutectic system is selected, the solidification range is reduced, and a fine-grained phase is formed, thereby achieving the technical effects of refined structure, no thermal cracks, and excellent printing performance. In particular, a continuous cellular L12Al3Er eutectic network structure with plastic deformation ability is introduced, with a size of hundreds of nanometers, which is both strengthened and toughened. The aluminum-erbium alloy has both excellent print formability and comprehensive mechanical properties, and the preparation method is mature, low-cost, and highly efficient, and can be produced on a large scale industrially.

The invention relates to an M-type barium ferrite single crystal material and a preparation method and application thereof.The preparation method comprises the steps that metal source mixed powder and a fluxing agent are evenly mixed and subjected to primary sintering, and the metal source mixed powder comprises a barium source and an iron source; and carrying out secondary sintering on the obtained intermediate powder to obtain the M-type barium ferrite single crystal material. Wherein the secondary sintering comprises a heating stage, a heat preservation stage and a cooling stage, and the cooling stage comprises first-stage cooling, second-stage cooling and third-stage cooling which are sequentially carried out. According to the invention, the fluxing agent and the raw materials are added to form a eutectic system, melting can be realized at a temperature far lower than the melting point of the raw materials, and the cooling process is accurately controlled to slowly separate out the target M-type barium ferrite single crystal from the supersaturated molten liquid and reduce thermal stress and defects, so that the M-type barium ferrite single crystal material with high integrity and high purity is obtained. And moreover, the preparation method disclosed by the invention is simple, low in cost and easy for large-scale industrial production.

The invention relates to the field of metal recovery and solid waste recycling, in particular to a method for selectively recovering gold in solid waste through a eutectic system. The eutectic system comprises a hydrogen bond acceptor, a hydrogen bond donor and an oxidizing agent. The gold-containing solid waste is immersed into the eutectic system to be leached, after leaching is finished, a leaching agent is subjected to electro-deposition, gold elementary substances are obtained, and gold in the solid waste is selectively recycled through the eutectic system. According to the method, the environment-friendly deep eutectic solvent-iodine system serves as a reaction medium, traditional strong acid / alkali and other corrosive leaching agents are replaced, the precious metal gold in the gold-containing solid waste is selectively extracted, the technological process and operation are simple and efficient, the leachate can be recycled, and a new way is provided for green and efficient recovery of the gold in the solid waste.

The application relates to the technical field of semiconductor packaging, in particular to a film expanding mechanism and a memory bar master control chip die bonding machine. The memory bar master control chip die bonding machine comprises a working machine, a eutectic system, a first feeding system, a second feeding system and a visual positioning system. The eutectic system comprises a die bonding support table, a two-dimensional motion module connected below the die bonding support table, a glue dispensing mechanism arranged above the die bonding support table and a die bonding heating assembly arranged on the die bonding support table. A plate groove is arranged on the die bonding support table. The die bonding heating assembly comprises a material loading top plate and a heating piece arranged in the material loading top plate. The material loading top plate is located in the plate groove. The first feeding system comprises a chip feeding table, a two-dimensional moving module and a die picking device. The two-dimensional moving module is used for driving the chip feeding table to move. The die picking device comprises a thimble mechanism and a chip material conveying mechanism. The application realizes the integration of eutectic die bonding and glue die bonding functions on one device.

The invention relates to an energetic material based on a urea-potassium perchlorate eutectic system and a preparation method of the energetic material, and belongs to the technical field of safe and environment-friendly energetic materials. The energetic material based on the urea-potassium perchlorate eutectic system is prepared from the following components in parts by weight: 18 to 35 parts of high-molecular fluorine polymer with the particle size of 50 to 400 microns; 15-40 parts of active metal powder with a particle size of 10-75 [mu] m; 10-30 parts of urea with a particle size of 20-100 [mu] m; 12-35 parts of potassium perchlorate with a particle size of 10-120 [mu] m; 0.5 to 3 parts of a silane coupling agent; 0.5 to 5 parts of a binder; 5 to 10 parts of nano silicon dioxide; 0.5-3 parts of a stabilizer; the urea and the potassium perchlorate are used for constructing a urea-potassium perchlorate eutectic system. According to the energetic material, through co-crystallization treatment of urea and potassium perchlorate, the synergistic effect of an oxidizing agent and a gas generating agent is optimized, and then the problems that a traditional energetic material for emission is large in pollution and poor in safety are solved.

The invention discloses a bimetallic borohydride system. The bimetallic borohydride system comprises a Li / KBH4 eutectic system and graphene loaded with Ni3B nanoparticles, and the Li / KBH4 eutectic system is infiltrated into gaps of the lamellar graphene loaded with the Ni3B nano particles through melting, so that a novel sandwich structure consisting of the Li / KBH4 eutectic system, the graphene and the nano Ni3B is constructed. According to the bimetal hydroboron system disclosed by the invention, the hydrogen absorption and desorption temperature of the system can be remarkably reduced and the dynamic performance and the cycling stability of the system can be improved under the premise of keeping the high hydrogen storage capacity of the system by utilizing the synergistic effect of the graphene and the Ni3B nanoparticles.

The invention designs a high-strength aluminum erbium alloy for additive manufacturing and a preparation method thereof. The alloy comprises: 4 to 20 wt% of erbium (Er); 2 to 10 wt% of magnesium (Mg); less than or equal to 1 wt% of manganese (Mn); optionally, from 0 to 1 wt% of scandium (Sc); optionally, from 0 to 1 wt% of zirconium (Zr). According to the method, the forming performance and the mechanical performance of the alloy are improved at the same time, the phase diagram calculation method is used for assisting in alloy component design, an Al-Er eutectic system is selected, the solidification interval is reduced, the fine grain phase is formed, and the technical effects of structure refinement, no hot crack and excellent printing performance are achieved; particularly, a continuous cellular FCC configuration Al3Er eutectic network structure with plastic deformation capacity is introduced, the size is in hundred-nanometer magnitude, and both strengthening and toughening are achieved. The aluminum-erbium alloy has excellent printing formability and comprehensive mechanical properties, and the preparation method is mature, low in cost, high in efficiency and capable of achieving large-scale industrial production.

The invention relates to the technical field of cosmetics, and particularly discloses a gel mask patch containing endogenous crystal patterns and a preparation method thereof.The gel mask patch comprises a matrix gel layer and an endogenous crystal structure, and a matrix is composed of 60-80% of water, 1-3% of gelling agent, 1-10% of polyhydric alcohol and 5-18% of active matter; the active matter is a eutectic system of trehalose / mannitol and glycine / taurine, and snowflake-shaped crystals protruding out of the surface by 0.1-0.3 mm are formed. During preparation, cold air nucleation is performed at 20-30 DEG C, then shock cooling directional growth is performed at 5-10 DEG C, and finally low-temperature drying and curing are performed at 40-45 DEG C. According to the invention, active matters beneficial to skin are added, and temperature change in a hydrogel production process is utilized, so that the active matters are condensed from a dissolved state and are separated out by self-crystallization, a snowflake-shaped pattern effect is formed, physical embossing or injection molding is not depended on, and the appearance of the product changes randomly and is rich and diversified; when the mask is applied, the branched crystals protrude out of the surface of the mask body to form physical attachment with the skin, gliding is prevented when the mask is used, and the functions of physical massage and physiological improvement on the skin are achieved.

This invention relates to the field of novel energy storage materials, specifically to an ultra-high capacity tellurium-based material with a six-electron conversion mechanism and its manganese ion storage application. The material system of this invention includes a tellurium-based active material as the working electrode and an ion transport medium adapted to it; wherein the tellurium-based active material is a composite material of tellurium and carbon-based materials; the ion transport medium is a hydrated eutectic system, including manganese salt, hydrogen bond donor water, and hydrogen bond acceptor succinate. This invention successfully activates the deep six-electron conversion reaction (Te6000) of the tellurium-based material in an aqueous environment. 2‑ ↔Te 4+ This breakthrough overcomes the capacity bottleneck of traditional four-electron reactions. The material system not only exhibits excellent conductivity but also demonstrates ultra-high specific capacity and excellent cycle stability, providing a novel material solution for constructing high-specific-energy storage devices.

The invention discloses a mixed molten salt solid heat storage material, a preparation method and application, and belongs to the technical field of heat transfer and storage materials, the mixed molten salt solid heat storage material is eutectic salt and comprises a component I and a component II, the mass percent of the component I is 90.0-99.5%, the mass percent of the component II is 0.5-10.0%, the component I comprises NaCl-Na2SO4, and the component II comprises magnesium chloride. Sodium chloride, sodium sulfate and magnesium chloride are used as raw materials, MgCl2 is added into a binary eutectic system NaCl-Na2SO4 with the same cation, the specific heat and the heat conductivity coefficient of the molten salt material are greatly improved under the condition that the influence on the melting point and the decomposition temperature is small, the use temperature range is wide, and the development of the molten salt energy storage technology is promoted.

The present invention relates to the technical field of functional fabrics, and specifically to a sizing process for making cool fabrics. The sizing process of the present invention overcomes the problems that the cool effect of fabric materials decreases after being washed with water and the moisture absorption performance of the materials themselves is poor. By combining processes such as preparing a cool sizing solution, fabric pretreatment, gradient sizing treatment, hydrophilic finishing, segmented curing and drying, and antistatic treatment, the surface energy of the fabric is improved. The prepared cool sizing solution contains components such as surface-modified inorganic nanoparticles and eutectic system phase change microcapsules. Through gradient sizing treatment, the functional components penetrate into the yarn gaps and control the surface film formation. Finally, a cool fabric is obtained according to the six sizing processes. The fabric still has a cool effect after being washed with water, has good moisture absorption, and is comfortable to wear.

The application discloses a preparation method of super-smooth daily-use porcelain white glaze, which completely replaces traditional quartz as a main silicon source with an industrial by-product lithium residue, introduces bismuth oxide (Bi2O3) as an efficient fluxing agent, and supplements tin oxide (SnO2) and antimony oxide (Sb2O3) as functional additives to form a K-Na-Ca-Mg-Sb-Bi multi-element eutectic system; and introduces potassium nitrate (KNO3) as an oxidation stabilizer to inhibit the precipitation of bismuth-based microcrystals and eliminate the yellowing phenomenon of the glaze surface caused by the change of the valence of bismuth elements, so that high-quality glaze surfaces with super-smooth surfaces and high whiteness are successfully obtained while the firing temperature is significantly reduced. The application significantly reduces the dependence on traditional non-renewable mineral resources such as high-grade quartz and feldspar, saves the raw material cost, meets the needs of green environmental protection and circular economy development, and provides a new path for the sustainable development of the ceramic industry.

The invention provides a household garbage incineration fly ash and coal gasification slag collaborative melting vitrification and efficient metal recovery method, which comprises the following steps: uniformly mixing dried household garbage incineration fly ash and coal gasification slag to obtain a mixture, melting, and cooling to obtain a glass product and an alloy. The raw material cost is low, vitrification of a eutectic system and alloying recovery of metal are achieved, and the alloy recovery rate is high. The invention also provides the microcrystalline glass which is obtained by heat treatment of the glass product prepared by the method, and the obtained microcrystalline glass has high Vickers hardness, low water absorption and good acid and alkali corrosion resistance.

The application discloses a kind of mixed molten salt solid heat storage materials, preparation method and application, belong to heat transfer heat storage material technical field, mixed molten salt solid heat storage material is eutectic salt, including component one and component two, the mass percentage of component one is 90.0~99.5%, the mass percentage of component two is 0.5~10.0%, wherein, component one includes NaCl-Na2SO4, component two includes magnesium chloride.The application uses sodium chloride, sodium sulfate and magnesium chloride as raw materials, adds MgCl2 in binary eutectic system NaCl-Na2SO4 of same cation, greatly improves the specific heat and thermal conductivity of molten salt material under the condition that the influence on melting point and decomposition temperature is small, the use temperature range is wide, and it is conducive to promoting the development of molten salt energy storage technology.

The invention belongs to the technical field of supramolecular material processing, and particularly relates to a polyrotaxane material based on a deep eutectic system as well as a preparation method and application of the polyrotaxane material. Organic acids such as lipoic acid and citric acid are used as hydrogen bond donors, polyrotaxane is used as a hydrogen bond receptor, and the lipoic acid and the polyrotaxane construct a dynamic solvation network under the reversible hydrogen bond supramolecular action, so that efficient dissolution and stable dispersion of cyclodextrin-based polyrotaxane are realized under mild conditions. On the basis, the dissolved-state polyrotaxane can be controllably converted into an elastomer by regulating and controlling the type and dosage of the organic acid, the molar ratio of a donor to an acceptor and the water content of a system or combining a physical / chemical cross-linking means, so that the polyrotaxane elastic material with adjustable mechanical property and toughness is obtained. The method has good adaptability and universality to polyrotaxane with different chain segment lengths and polyrotaxane (cationic type and anionic type) with different charge characteristics, and the deep eutectic system can be recycled and can still maintain dissolving and processing capabilities after multiple cycles.

The invention provides a method for synergistically melting and vitrification electroplating sludge and coal gasification slag and efficiently recovering metal alloy, which is characterized by comprising the following steps: uniformly mixing dried coal gasification slag and electroplating sludge, melting, cooling and separating to obtain a glass product and alloy; the mass ratio of the coal gasification slag to the electroplating sludge is (0.5-2): 1; the melting time is 30 to 150 minutes; the viscosity of a melting system is controlled to be 0.83 to 67.22 Pa.s. The raw material cost is low, vitrification of a eutectic system and alloying recovery of metal are achieved, and the alloy recovery rate is high. The invention also provides the microcrystalline glass which is obtained by heat treatment of the glass product prepared by the method, and the obtained microcrystalline glass has high Vickers hardness, low water absorption and good acid and alkali corrosion resistance.

This invention relates to the field of energy storage battery technology and provides a stepwise preparation method for a dual-complex zinc-bromine flow battery electrolyte. It employs a "dual-complex-directional guidance" synergistic stabilization system, sequentially completing the dissolution of the basic salt, strong complexation with the main complexing agent, directional guidance with auxiliary additives, and purification and testing. This invention addresses the pain points of existing technologies, such as severe bromine volatilization, uneven zinc deposition, insufficient stability over a wide temperature range, and significant side effects of additives. The main complexing agent achieves strong bromine fixation through N and O dual-site coordination, while the auxiliary additive guides the directional deposition of zinc. The component ratio forms a eutectic system suitable for a wide temperature range, ensuring product consistency. The bromine volatilization rate of the electrolyte is reduced to 0.01-0.03 g / (L·day), and the negative electrode utilization rate reaches over 90% after 2000 hours of cycling. It can operate stably at -10℃ to 60℃, with preparation costs comparable to traditional electrolytes. It is compatible with existing production lines and suitable for large-scale energy storage, distributed energy storage, and other scenarios.

The invention discloses a method for preparing dark brown glaze at low temperature, a K-Na-Ca-Mg-Fe-Sr-P multi-element low-temperature co-melting system is constructed by using manganese slag and chromic oxide supplemented by titanium dioxide, calcium phosphate and strontium carbonate, firing at the temperature of 1150-1180 DEG C in an oxidizing atmosphere is realized, and the dark brown glaze is prepared by forming iron-chromium spinel and manganese-chromium spinel crystal phases and the combined action thereof. The whole glaze surface is dark brown under natural light. The method can be widely applied to various art ceramics, the raw material cost is saved through the low-temperature firing process and the use of solid waste materials, and the requirements of environmental protection and circular economy development are met.

The invention discloses a composite surfactant for cleaning low-temperature oily sludge and application thereof, and relates to the technical field of low-temperature oily sludge treatment.The composite surfactant is prepared from, by mass, a core surfactant, a low-temperature coupling solvent, auxiliaries and the balance deionized water. The cleaning efficiency of the composite surfactant can reach 90% or above in the low-temperature environment of 5-20 DEG C, additional heating is not needed, and the energy consumption is greatly reduced compared with that of a traditional process. Through the synergistic effect of the eutectic system and the dendritic surfactant, the oil stain removal agent has good adaptability to light and heavy oil stains and aged oil sludge. The pH response demulsification mechanism shortens the oil-water layering time to 5-10 minutes, and the purity of the recovered oil is greater than or equal to 85%. The problems of low cleaning efficiency, high energy consumption, secondary pollution, poor formula universality and the like on the oily sludge at the low temperature of 5-20 DEG C are solved, and an innovative solution is provided for low-temperature oily sludge treatment.

The invention discloses a preparation method of smooth wear-resistant glaze for building sanitary ceramics, which comprises the following steps: by taking natural minerals as a main body, introducing bismuth oxide, antimony oxide, borocalcite and steel slag to construct a multi-element low-temperature eutectic system, and inducing anorthite and diopside microcrystals to be synergistically separated out in a glaze layer, thereby synchronously realizing smooth appearance and wear resistance. And the building sanitary ceramic glaze with a smooth surface and high wear resistance is obtained.

The application discloses a preparation method of a smooth wear-resistant glaze for building sanitary ceramics, and the glaze is mainly made of natural minerals, a multicomponent low-temperature eutectic system is constructed by introducing bismuth oxide, antimony oxide, borocalcite and steel slag, and microcrystalline of anorthite and diopside is induced to be cooperatively precipitated in the glaze layer, so that the smooth appearance and wear resistance are simultaneously realized, and the building sanitary ceramic glaze with the smooth surface and high wear resistance is obtained.

The invention provides a high-performance Al-11Mg2Si eutectic system alloy and a preparation method thereof, and belongs to the technical field of aluminum alloys. A high-performance Al-11Mg2Si eutectic system alloy is prepared from, by mass, 7.8%-8.5% of magnesium, 4.0%-4.2% of silicon, 0.1%-1.0% of antimony and the balance aluminum and inevitable impurities, the silicon is added in the form of aluminum-silicon alloy, and the mass content of the silicon in the aluminum-silicon alloy is 24.4%. 0.1-1.0% of Sb is added into the alloy, the morphology of the eutectic Mg2Si phase is remarkably improved while the size of the eutectic Mg2Si is reduced, an original long-strip-shaped eutectic structure (larger than 50 microns) is converted into a fine spherical structure (1-2 microns), stress concentration in the stretching process is avoided, and the elongation and tensile strength of the alloy are improved.

The application belongs to the technical field of electrode material recycling and fuel cell, and more particularly relates to a method for preparing a cathode for a solid oxide fuel cell by using a positive electrode recycling material of a waste lithium battery. The method directly uses a semi-finished product complex produced by recycling a lithium battery positive electrode material as a raw material; by using the strong complexing ability of a eutectic system formed by a sugar and an amino compound, the dissolution of a difficult-to-dissolve recycling material and the atomic-level mixing of other metal salt raw materials are realized, so that an air electrode material with high performance is prepared. The air electrode material prepared from the lithium battery positive electrode recycling material has no impurity phase, the micro-morphology is a uniform nano structure, and has a smaller lattice constant. The material obtained by the application exhibits more excellent electrochemical performance than the same kind of material prepared by using a traditional raw material in an electrochemical test. Research shows that the impurity elements in the recycling product can significantly improve the electrochemical performance of the prepared air electrode material through a doping effect.

This invention provides a vanillin-betaine eutectic system. Using vanillin as a model flavor molecule and betaine as the eutectic form, a vanillin-betaine eutectic system is constructed. Its crystal structure and thermal behavior are analyzed using single-crystal X-ray diffraction, powder X-ray diffraction, and thermal analysis systems. Its release performance in an aqueous system is evaluated using dissolution experiments. Based on this, GC-IMS and GC-MS techniques are used to systematically compare the volatilization behavior of eutectic, physical mixtures, and pure vanillin under simulated baking conditions, from two levels: overall volatile flavor fingerprint and quantitative analysis of key aroma components. Simultaneously, density functional theory calculations are used to elucidate the intrinsic driving forces of eutectic formation and its stability from electronic structure and thermodynamic perspectives. This invention establishes the correlation between the structural characteristics of vanillin eutectic and its volatilization behavior and flavor release, providing a new theoretical basis for the structural regulation and functional application of flavor molecules.

This invention relates to the field of polymer material composition technology, and discloses a composite wax for engineering plastic masterbatch and its preparation process, comprising: eutectic melting of nonpolar polyethylene pyrolysis wax and polar oxidized polyethylene wax to construct a homogeneous eutectic system; maintaining a specific isothermal induction temperature to cause the nonpolar polyethylene pyrolysis wax to undergo phase transformation and precipitate into solid microcrystalline nuclei, while the polar oxidized polyethylene wax remains in a liquid state and impregnates and coats the surface of the solid microcrystalline nuclei to produce a microscopic core-shell precursor; and using a heat exchange molding unit to implement high-speed cooling, freezing the phase state to obtain a composite sheet with a core of pyrolysis wax and a shell enriched with oxidized wax. This invention utilizes the difference in crystallization kinetics to induce the directional evolution of the microstructure, solving the problem of uneven dispersion caused by the release of polar components, and directional enrichment of polar functional groups on the particle surface, providing interfacial adhesion, achieving efficient dispersion of pigments in the resin matrix, and improving color strength.

The application belongs to the technical field of supramolecular material processing, and particularly relates to a kind of polyrotaxane materials based on deep eutectic system and its preparation method and application.Through organic acids such as thioctic acid and citric acid as hydrogen bond donor, polyrotaxane as hydrogen bond acceptor, both use reversible hydrogen bond supramolecular interaction to construct dynamic solvation network, so as to realize the efficient dissolution and stable dispersion of cyclodextrin-based polyrotaxane under mild conditions.On this basis, by regulating the type and amount of organic acid, the molar ratio of donor and acceptor and the water content of the system, or combined with physical / chemical crosslinking means, the dissolved polyrotaxane can be controllably converted into elastomer, and the polyrotaxane elastomer material with adjustable mechanical properties and toughness can be obtained.The method has good adaptability and universality for polyrotaxanes with different chain lengths and polyrotaxanes with different charge characteristics (cationic and anionic), and the deep eutectic system can be recycled and used, and still can maintain the dissolution and processing ability after several cycles.

The invention discloses an anti-freezing agent for concrete and a preparation method thereof, and the anti-freezing agent comprises the following components in parts by mass: 10-30 parts of composite salt composed of calcium magnesium acetate and sodium chloride in a mass ratio of 1: (0.5-1.5); the porous carrier is zeolite powder activated at 120-150 DEG C, the specific surface area is 300-600m < 2 > / g, and the average pore size is 2-5nm; the coating material is formed by polymerizing methyl sodium silicate and phenolic resin according to the mass ratio of 1: (0.5-1.0) through free radicals, the grafting rate is 30%-50%, and the contact angle of a coating layer is larger than or equal to 110 degrees; according to the invention, calcium magnesium acetate and sodium chloride are compounded according to a specific ratio of (1: 0.5)-(1: 1.5) to form a eutectic system, and the growth regularity of ice crystals is destroyed by virtue of interaction among ions, so that the freezing point of the solution is reduced to-25 DEG C or below, and is reduced by 7 DEG C or above compared with that of a single salt. The synergistic mechanism forms a continuous ice melting environment on the surface of the concrete, ice layer attachment and freeze-thaw cycle damage are avoided, the ice melting efficiency is improved by 40% or above compared with a traditional single salt system, and the high and cold environment below-20 DEG C is effectively dealt with.