50results about How to "High melting point" patented technology

The application discloses an alloy cushion block for a large walking beam heating furnace and a preparation method thereof, and the preparation method comprises the following steps: S1, determining the melting point of the alloy cushion block based on the atomic penetration depth of an alloy B containing FeO on multiple different alloy A with a melting point higher than that of the alloy B; S2, studying the load-bearing condition of the alloy cushion block to determine the required compressive strength; S3, designing the composition of the alloy cushion block; and S4, carrying out the industrial design of the alloy cushion block and starting smelting. Through reasonable alloy composition and production process design, the application provides a high-temperature heat-resistant alloy cushion block, improves the strength and melting point of the alloy cushion block, enables the alloy cushion block to maintain high strength at high temperature, solves the problem of FeO bonding in a molten state, reduces the phenomenon of heating furnace nodulation, and has universality and is suitable for various casting processes.

This invention relates to transition layer materials and welding processes for welding dissimilar steel and aluminum materials, belonging to the field of welding technology. The transition layer material for welding dissimilar steel and aluminum materials of this invention comprises a copper layer, a copper alloy layer, and a zinc alloy layer arranged sequentially; the copper layer is adjacent to the steel base material, and the zinc alloy layer is adjacent to the aluminum base material; the copper content in the copper alloy layer is 62.0%-64.0%; the zinc content in the zinc alloy layer is 89.0%-91.0%; the mass ratio of the copper layer, copper alloy layer, and zinc alloy layer is (0.9-1.1):(2.3-2.7):(1.8-2.2). By sequentially setting the copper layer, copper alloy layer, and zinc alloy layer between the steel base material and the aluminum base material, a gradual transition from the steel base material to the aluminum base material is achieved, effectively avoiding the formation of brittle Fe-Al intermetallic compounds during direct welding, and enhancing the mechanical properties and durability of the welded joint.

The application belongs to the technical field of adhesives and sealants, and specifically provides a sealing wax as well as a preparation method and application thereof. The sealing wax comprises the following components in parts by mass: microcrystalline wax 40-60 parts, polyethylene wax 1-5 parts, ethylene-vinyl acetate copolymer 3-8 parts, low-molecular-weight polyisobutylene 2-5 parts, medium-molecular-weight polyisobutylene 2-5 parts, tackifying resin 15-20 parts, and flame retardant 3-5 parts. The number-average molecular weight of the low-molecular-weight polyisobutylene is less than 5000, and the viscosity-average molecular weight of the medium-molecular-weight polyisobutylene is 10000-40000. Through the design and mutual compounding of the components, the sealing wax has a high melting point, a low water absorption rate, a high volume resistivity, good high-temperature and low-temperature resistance, and strong waterproof and moisture-proof performance, high mechanical strength and toughness, high insulation, high transparency, and strong sealing effect, and has good flow leveling property and good flame retardant performance, and can meet the strict use requirements of high-end electronic equipment.

This invention relates to the field of polymer synthesis technology. This invention provides a controlled polymerization method for a high-alternation-degree ETFE copolymer, comprising the following steps: (1) adding a solvent to a high-pressure reactor, replacing the air, and then filling it with an initial monomer mixture to a total pressure of 1.5-2.5 MPa, wherein the monomer mixture is a mixture of tetrafluoroethylene and ethylene; (2) heating to 60-85°C, adding an initiator to initiate the polymerization reaction; (3) simultaneously adding the monomer mixture continuously or semi-continuously during the polymerization reaction; (4) adding a chain transfer agent, and discharging the product after the reaction, i.e., the high-alternation-degree ETFE copolymer. This invention also provides a controlled polymerization method for a high-alternation-degree ETFE copolymer. This invention also provides an application of the high-alternation-degree ETFE copolymer in new energy, aerospace, high-end equipment manufacturing, and photovoltaic fields. The high-alternation-degree ETFE copolymer of this invention has high alternation degree (>92%), high thermal stability, and excellent mechanical properties.

The invention provides a CMAS corrosion resistant material with stable phase, the CMAS corrosion resistant material is solid solution ceramic, the molecular formula of the solid solution ceramic is (Zr1-x-yHfx) TayO2 + 0.5 y, x is greater than 0.4 and greater than 0.1, and y is greater than 0.4 and greater than 0.1. By doping the elements Hf and Ta, the high-temperature phase change of ZrO2 is inhibited, the high-temperature stability of (Zr1-x-yHfx) TayO2 + 0.5 y is enhanced, and meanwhile, the melting point and CMAS corrosion resistance of the material are improved. Meanwhile, the invention also provides a preparation method of the material.

This invention provides a temperature-sensitive, environmentally friendly microcapsule and its preparation method, relating to the field of polymer materials. The microcapsule is composed of chitosan, cellulose derivatives, gelatin, and dopamine. The microcapsule can achieve different cross-linking structures depending on the component ratios, and can controllably release the core substance within a temperature range of 90-150℃. The materials provided by this invention eliminate toxic reagents, and the microcapsules are all environmentally friendly materials, causing no environmental pollution. The microcapsule preparation method is characterized by temperature sensitivity and controllability, being green, environmentally friendly, and pollution-free, with a simple preparation method suitable for large-scale industrial production. Utilizing temperature-sensitive, biodegradable, and comprehensively environmentally friendly materials, it has broad application prospects in catalyst coating, drug coating, and other fields, meeting the needs of multiple sectors.

The invention discloses a high-strength and high-toughness ADC12 cast aluminum alloy and a preparation method thereof, and belongs to the technical field of aluminum alloy preparation. The ADC12 cast aluminum alloy comprises the following chemical components in percentage by weight: 9.6%-12.0% of Si, less than or equal to 1.3% of Fe, 1.5%-2.5% of Cu, less than or equal to 0.5% of Mn, less than or equal to 0.3% of Mg, less than or equal to 0.5% of Ni, less than or equal to 1.0% of Zn, less than or equal to 0.2% of Sn, 0.1%-0.3% of Tb and the balance of aluminum and inevitable impurity elements. According to the ADC12 cast aluminum alloy, the content of a copper element is reduced, and meanwhile, a trace amount of rare earth terbium element is added to refine a structure, so that the strength and the toughness are improved, and the strength reduction caused by the reduction of the copper element is made up. Meanwhile, artificial aging treatment is provided, and the strength is further improved by separating out a secondary strengthening phase, so that the ADC12 material which is low in cost, high in strength and high in toughness is developed, and the high-strength requirement under the extreme condition is met.

The present application relates to the field of photovoltaic technology, and particularly relates to a solder strip preparation method, a solder strip and a solder strip preparation device. The solder strip preparation method comprises: stage-wise calendering a base material to form a first segment and a second segment on the base material, the first segment and the second segment being different in shape; wrapping a protective tape on the first segment; plating a tin-resistant metal coating on the second segment; removing the protective tape from the first segment, and plating a solder coating on the first segment, the melting point of the tin-resistant metal coating being greater than the melting point of the solder coating. The solder strip prepared by the solder strip preparation method does not have the phenomenon of tin accumulation at the bending part, avoids the contact between the solder strip and the film strip, avoids the micro-short circuit phenomenon of the photovoltaic module, and prolongs the service life.

The present application relates to a kind of polymerization device of high viscosity polymer, belong to polymerization reaction device technical field.The present application includes reaction main body, with reaction inner cavity, reaction inner cavity is equipped with even root for stirring high viscosity polymer's helical stirring shaft, helical stirring shaft includes main shaft and the helical blade connected in the outer side of main shaft, and the helical blade in each adjacent two helical stirring shafts is staggered with each other on the side of mutual approach;Main shaft is equipped with the heat-conducting medium passage that is penetrated from top to bottom, and the heat-conducting medium passage in each main shaft is connected by connecting short pipe to be connected to be the serpentine heat-conducting medium circulation total passage, one end of heat-conducting medium circulation total passage is heat-conducting medium inlet, and the other end is heat-conducting medium outlet, and heat-conducting medium inlet and heat-conducting medium outlet are located in the same end of the reaction main body;Reaction main body outer side is equipped with heating box, and heating box is used to heat heat-conducting medium, and heating box is located in the side close to heat-conducting medium inlet and heat-conducting medium outlet.

This is to provide a polyamide resin composition that has good mechanical characteristics such as tensile characteristics, bending characteristics and impact resistance, and low water absorption. The polyamide resin composition of the present invention comprises 55 to 78% by mass of an aliphatic polyamide resin (A), 20 to 35% by mass of glass fiber (B), 1 to 9% by mass of a crosslinking agent (C), 0.1 to 1.5% by mass of a heat-resistant agent (D) and 0 to 6% by mass of an inorganic filler other than glass fiber (E) in 100% by mass of the polyamide resin composition, and the aliphatic polyamide resin (A) has an average number of carbon atoms per one amide group of exceeding 6.

The utility model discloses a kind of ventilation devices of graphitization furnace, it is related to ventilation device technical field, including pipe body, the inside of pipe body is provided with airflow passage through pipe body, the equal-interval air hole of array is on the outer wall of pipe body, the air hole and airflow passage are communicated, the both ends of airflow passage are provided with ladder groove, the sleeve pipe is sleeved in the ladder groove, the sleeve pipe in one is equipped with screw plug, another sleeve pipe is connected with the ventilation pipe of outside. The utility model discloses a kind of ventilation devices of graphitization furnace, pipe body is made of high purity graphite, high purity graphite has very high melting point and thermal stability, can withstand the extreme high temperature required in graphitization process, improves the stability of gas supply pipeline when graphitization furnace is used, simultaneously, can help evenly distribute heat, ensure the consistency of temperature in furnace, improves the quality of production.

The application belongs to the field of aero-engine gas path sealing, and discloses a gradient-structure double-ytterbium silicate high-temperature seal coating and application. The seal coating comprises a barrier layer, a transition layer and an abradable surface layer which are sequentially sprayed on a to-be-sprayed base body along the thickness direction of the seal coating; the porosity of the barrier layer is 1-9%; the porosity of the transition layer is 9-18%; the porosity of the abradable surface layer is 18-30%; and the spraying feed powder of the barrier layer, the transition layer and the abradable surface layer is Yb2Si2O7-based powder. The coating has the characteristics of gradient distribution of porosity, high-temperature resistance, CMAS corrosion resistance, moderate hardness and high bonding strength.

This invention provides a method for preparing a tungsten-titanium-aluminum alloy target. The method includes the following steps: ball milling tungsten powder, titanium powder, and aluminum powder under an inert atmosphere to obtain a mixed powder; adding the mixed powder in portions into a hot-pressing mold, performing hot-pressing sintering and post-treatment to obtain the tungsten-titanium-aluminum alloy target. The tungsten-titanium-aluminum alloy target provided by this invention is widely used in the field of high-performance thin film deposition as a diffusion barrier layer to prevent copper atoms from diffusing into the silicon substrate. Furthermore, due to its high thermal stability and low resistivity, it can also be used as a gate or contact electrode.

The invention discloses enzyme-agar cross-linking enhanced cow leather jelly and a preparation method thereof, belongs to the technical field of food processing, and aims to solve the problem that traditional cow leather jelly is easy to melt and deform due to poor thermal stability. The method comprises the following steps: mixing cow leather and water, heating to prepare a glue solution, adding glutamine transaminase, papain, alkaline protease and agar into the glue solution, mixing, performing constant-temperature water bath, performing high-temperature enzyme deactivation and cooling to finally obtain a finished product. Wherein the addition amount of the enzyme is 1-3 U / g, and the addition amount of the agar is 0.2%-0.4% of the mass of the glue solution. Through the synergistic effect of the enzyme and the agar, an enzymatic covalent crosslinking-colloid physical support dual stable gel network is constructed, so that the thermal stability and texture characteristics of the kraft jelly are remarkably improved. The method is simple in process and suitable for industrial production.

The invention discloses a high-fracture-toughness silicon nitride ceramic ball and a preparation method thereof, and belongs to the field of high-performance structural ceramic materials. The ceramic ball is prepared by taking high-purity alpha-SiN powder as a matrix and adopting a composite sintering aid system composed of an oxygen-free rare earth compound, aluminum nitride and beta-SiN seed crystal through an air pressure sintering process controlled by program pressure. Under the synergistic effect of the auxiliary system and a specific process, 'bimodal distribution 'beta-SiN columnar crystals and high-melting-point and high-toughness intergranular phases are generated in situ in the material, so that the fracture toughness of the material is remarkably improved on the premise of not sacrificing hardness and strength. The fracture toughness of the silicon nitride ceramic ball is up to 8.5-11.0 MPa.m / , the bending strength is 750-1050 MPa, and the silicon nitride ceramic ball is particularly suitable for precision bearings under high-speed and high-load working conditions, such as a wind power generation main shaft, an aerospace engine main shaft and the like.

The method for preparing polyoxalate by ring-opening polymerization of cyclic oxalate monomers and cyclic oligomers thereof disclosed by the application is that at least one of the cyclic oxalate monomers and the cyclic oligomers thereof, or a blend of at least one of the cyclic oxalate monomers and the cyclic oligomers thereof and at least one of cyclic lactone, cyclic lactide and cyclic carbonate, is subjected to bulk ring-opening polymerization or solution ring-opening polymerization under the action of a catalyst and an initiator to obtain polyoxalate and its copolymer. Since the application adopts ring-opening polymerization to prepare polyoxalate, not only the problems of low esterification polycondensation efficiency and poor polymerization controllability are avoided, but also the side reactions of alpha-keto acid decarboxylation and terminal hydroxyl group etherification in the esterification polycondensation process are avoided, so that the polyoxalate obtained has controllable polymerization degree / molecular weight, high structural regularity and clear end group structure, and further has higher melting point and crystallization temperature and is white, and at the same time, a new way for preparing polyoxalate is provided.

The invention provides a gallic acid antioxidant as well as a preparation method and application thereof. The gallic acid antioxidant comprises three gallic acid residues and a plurality of ring structures, the gallic acid residues contain a large number of phenolic hydroxyl groups, the oxidation free radical reaction can be terminated by providing hydrogen protons and lone pair electrons, the antioxidant has good oxidation resistance, meanwhile, the gallic acid antioxidant also contains a large number of rigid ring structures, and the oxidation resistance of the gallic acid antioxidant is improved. The gallic acid is a natural phenolic compound, so that the melting point of the antioxidant can be increased to enhance the high-temperature stability, and in addition, the gallic acid is a natural phenolic compound and has safety, so that the antioxidant disclosed by the invention can be applied to the fields with relatively high safety level requirements, such as food and medical treatment.

This invention relates to a doped yttrium oxide flake powder, its preparation method, and its applications. The method uses 0.2-0.4 M Y(NO₃)₂. 3 ) 3 ·6H 2 O solution as Y 3+ Source, then add MgCl to the solution 2 and Al(NO 3 ) 3 ·9H 2 O was used as a dopant. After adjusting the pH of the mixed solution to 8-10, a hydrothermal reaction was carried out at 170-200°C for 9-15 hours to achieve uniform distribution of the dopant in the yttrium oxide lattice. Finally, the powder was calcined at 600-700°C for 3-5 hours to improve the structural stability and properties of the material. The synthesized doped yttrium oxide powder had a plate-like morphology with a particle size between 5-25 micrometers, and the final product composition included Y. 2 O 3 MgAl 2 O 4 And Y-Al-O compounds. Compared with traditional physical doping methods, the preparation method of this invention not only achieves a more uniform doping effect, but also shows significant advantages in terms of energy consumption, cost, and particle size control. The doped yttrium oxide obtained by this method has performance superior to or equivalent to high-purity yttrium oxide, providing a new avenue for the further application and development of yttrium oxide.

The utility model provides a novel tandem type water-cooled resonant capacitor, comprising capacitor cores and copper electrodes, the upper and lower end faces of the capacitor cores are respectively welded with one copper electrode, the whole capacitor cores are cylindrical, the number of the capacitor cores is two, and the capacitor cores comprise a first copper foil, a second copper foil, a polypropylene optical film and a metallized polypropylene film. The first copper foil and the second copper foil are used as extraction electrodes, the metallized layer of the metallized polypropylene film is used as an intermediate electrode, the two layers of electrodes are separated by the metallized film, a polypropylene medium is arranged in a gap between the first copper foil and the second copper foil, and the capacitor core is formed by winding the copper foil, the polypropylene optical film and the metallized polypropylene film around the hard core rod. Spraying metal layers at two ends, welding the core and the copper electrodes together by using low-temperature soldering tin, and encapsulating a sealing material around the core; the copper electrode is provided with six water through holes, and the six holes are communicated through a connecting pipe to conduct internal water circulation. The power output and reliability of the capacitor are greatly improved, and the service life of the capacitor is greatly prolonged.

The invention belongs to the technical field of coenzyme Q10 products, and particularly relates to a reduced coenzyme Q10 / gamma-aminobutyric acid eutectic crystal and a preparation method thereof. The reduced coenzyme Q10 / gamma-aminobutyric acid eutectic crystal is a eutectic crystal formed by reduced coenzyme Q10 and gamma-aminobutyric acid. The reduced coenzyme Q10 / gamma-aminobutyric acid eutectic provided by the invention takes gamma-aminobutyric acid as a eutectic ligand of the reduced coenzyme Q10, not only can the melting point be increased to 70 DEG C or above, but also the reduced coenzyme Q10 / gamma-aminobutyric acid eutectic has good physical and chemical stability, and also has relatively high bioavailability. Besides, the preparation method of the reduced coenzyme Q10 / gamma-aminobutyric acid eutectic crystal provided by the invention is simple, good in repeatability, strong in operability and beneficial to large-scale industrial production, and has an important value for developing a reduced coenzyme Q10 solid oral preparation in the future.

The application provides a battery cover plate structure, a battery and an electric device, and relates to the technical field of batteries. The battery cover plate structure comprises a pole, a cover plate assembly and an insulation assembly. The cover plate assembly comprises a metal structural piece. The insulation assembly comprises an insulation piece and a conducting piece. The insulation piece is arranged between the pole and the metal structural piece. A local area of the insulation piece is provided with the conducting piece. The conducting piece connects the pole and the metal structural piece, and the conducting piece can be fused. The pole assembly of the embodiment is electrically connected to the metal structural piece through the conducting piece, so that the pole and the metal structural piece are in the same potential, thereby helping to shorten the voltage measurement distance between the positive pole and the negative pole of the battery. When collecting the voltage of the battery with a long distance between the positive pole and the negative pole, the voltage between the pole and the battery cover plate is measured at one of the poles, and the voltage of the battery can be measured, thereby effectively reducing the difficulty of voltage collection.

This invention belongs to the field of welding materials technology, specifically providing a single-sided welding double-sided forming backing flux, comprising the following raw material components by mass percentage: fused magnesia: 20-40%; quartz: 25-35%; zircon sand: 8-18%; fluorite: 5-15%; ferrosilicon: 3-10%; ferrotitanium: 3-10%; ferroboron: 1-2%; α-alumina: 1-5%; manganese oxide: 1-5%; strontium oxide: 0.5-1.5%; yttrium oxide: 0.5-1%; iron powder: 3-10%; phenolic resin: 2-10%. This backing flux is suitable for double-wire or triple-wire single-sided welding double-sided forming processes, and can meet the welding requirements of 10-35mm large ship panel DH36, EH36, DH40, EH40, etc. It is suitable for high heat input and high efficiency welding, with uniform and stable weld formation, no porosity or indentation, automatic slag removal, and excellent crack resistance.

The application discloses enoxamacetone diamine salts, a preparation method and application thereof. The stability of enoxamacetone diamine salts (enoxamacetone 1,4-butane diamine salt, enoxamacetone 1,5-pentane diamine salt and enoxamacetone 1,6-hexane diamine salt) is better than that of enoxamacetone and enoxamacetone monoamine salt (for example, enoxamacetone tert-butylamine salt); meanwhile, the weeding activity of the enoxamacetone diamine salt (enoxamacetone ethylenediamine salt, enoxamacetone 1,4-butane diamine salt and enoxamacetone 1,5-pentane diamine salt) is better than that of enoxamacetone tert-butylamine salt, wherein the weeding activity of enoxamacetone 1,5-pentane diamine salt is better than that of enoxamacetone. Most of the enoxamacetone diamine salts have low degradation rate during high-temperature heat storage, are easier to be stored for a long time, have higher melting point than enoxamacetone monoamine salt (for example, enoxamacetone tert-butylamine salt), are more convenient for granulation and crushing, are more convenient for being processed into solid dosage forms such as water dispersible granules as weeding agents, have better physical properties of preparations, and have good commercialization prospect.

The invention belongs to the technical field of surface modification of positive electrode materials of lithium ion batteries, and relates to an oxygen capture and thermal stability compound coating for a positive electrode material and application thereof, the oxygen capture and thermal stability compound coating comprises positive electrode active material particles and a compound functional coating covering the surfaces of the positive electrode active material particles, and rare earth elements comprise at least one of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; the transition metal element comprises at least one of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Fe, Co and Ni; the thickness of the composite functional coating ranges from 1 nm to 200 nm. The double functions of oxygen capture and thermal barrier are achieved through the composite functional coating; lattice oxygen release of the positive electrode material in a high-voltage and high-temperature environment can be remarkably inhibited, the side reaction of an electrolyte or solid electrolyte interface is reduced, the cycle life is prolonged, and the safety performance is improved.

The present application relates to the field of catalysis and olefin polymerization, and discloses a reaction system for preparing a polar ethylene copolymer, application of the reaction system, the polar ethylene copolymer and a polymerization method of the polar ethylene copolymer.The reaction system comprises the following components: a) at least one metallocene compound; b) at least one alkyl aluminoxane; c) at least one organic aluminum compound AlR' m X 3‑m ; d) ethylene; and e) a monomer represented by formula I.The reaction system has the characteristics of high activity and low price when used for preparing the polar ethylene copolymer, and the prepared polar ethylene copolymer has a linear structure, and the polar comonomer can be uniformly distributed on the copolymer molecular chain, so that the prepared polar ethylene copolymer has the structural characteristics of both cyclic olefin copolymer and hydroxylated polyolefin material, has excellent barrier property, and can be used as a packaging material in the field of medicine and other fields with high barrier property requirements.

The present application provides a crystalline form of tolebrutinib, an amorphous form, and a method of preparation thereof and a use thereof, and the crystalline form of tolebrutinib provided in the present application has at least one of the following advantages: good stability, low moisture attraction, uniform particle size distribution, solubility meeting the requirements for medicinal use, stable storage, avoiding phase transformation of the drug in the process of development and in storage, and a reliable method for the preparation thereof, which has a great development value. The amorphous form of tolebrutinib provided in this application, while possessing better solubility than that of tolebrutinib in the crystalline state, still possesses good stability of placement and acceptable hygroscopicity, and has high medicinal value.

The present application relates to the field of hard alloy material, in particular to a kind of hard alloy for drilling tool and preparation method thereof, made of hard phase and binder phase;The binder phase is composed of microcrystalline wax and hydroxyl functionalized hyperbranched polyethylene, the hard alloy prepared in the application has higher bending strength and hardness, and excellent wear resistance, is high-quality raw material for preparing special-shaped drilling tool.

The present application relates to a crystal of an oxazole compound. The present application particularly provides a crystal of an oxazole compound represented by formula (5), wherein the crystal has peaks at diffraction angles 2() of 9.6±0.2, 19.1±0.2 and 21.2±0.2 in an X-ray powder diffraction pattern measured with Cu K-characteristic X-rays. The crystal shows excellent stability.

The application discloses a bipolar plate of an alkaline electrolytic cell with a surface corrosion-resistant composite coating. The bipolar plate comprises a base material, a pre-coating layer and a composite coating, the composite coating is attached to the surface of the pre-coating layer, and the pre-coating layer is attached to the surface of the base material. The base material is Q235B carbon steel, the pre-coating layer is a nickel layer, and the composite coating is a Ni-P / NbC composite coating. The application also provides a preparation method of the bipolar plate of the alkaline electrolytic cell with the surface corrosion-resistant composite coating. The bipolar plate prepared by the application has high hardness, excellent corrosion resistance, wear resistance, electrical conductivity and high-temperature resistance due to the superior comprehensive performance of NbC nanoparticles. In addition, the composite coating has an ultrathin thickness, thereby reducing the overall weight of the bipolar plate, making the electrolytic cell more portable and reducing the manufacturing cost.

This invention relates to a horizontally cascaded phase change heat storage device, belonging to the field of phase change energy storage and enhanced heat transfer. It comprises an outer shell, a first inner cavity, a second inner cavity, an inner tube, a heat transfer fluid, a first phase change material, separating ribs, and a second phase change material. The invention utilizes separating ribs located at the lower part of the inner tube to divide the annular space between the outer shell and the inner tube into upper and lower chambers. The volume of the lower chamber increases from the inlet to the outlet. The first phase change material filled in the upper part of the first cavity has a higher melting point, while the phase change material filled in the lower part has a lower melting point. The combination of the separating ribs and different phase change materials reduces the heat storage time and improves the heat storage efficiency. Compared with traditional phase change heat exchangers, the heat storage time of this invention can be reduced by approximately 70%.