28results about How to "Delayed expansion" patented technology

The invention discloses a crowded automatic warehouse multi-AGV path planning method based on a conflict search algorithm. The method comprises the following steps: constructing a grid map model of an environment where AGVs are located; at the bottom layer of the conflict search algorithm, AGV environment information is obtained according to the grid map model, and a path solution of the AGV and conflict information carried by the path are obtained by using an A * algorithm; according to the top layer of the conflict search algorithm, an improved constraint tree is constructed according to the obtained AGV path solution and conflict information, a node with the minimum loss is selected in the constraint tree for conflict detection, planning succeeds if no conflict exists, corresponding constraints are applied to conflicting AGVs if conflicts exist, and the whole process is circulated till planning succeeds. According to the method, the searching process of corridor conflicts is simplified, the driving direction allowed by the corridor is adaptively determined through searching, the planning process is accelerated by introducing the conflict priority and bypassing the conflicts, the planning time and the quality of a path solution can be considered as much as possible, and the working efficiency of the AGV is effectively improved.

The invention discloses a method for improving the high-cycle fatigue performance of a Ti6Al4V titanium alloy, and belongs to the technical field of metal material processing, and the method comprises the following steps: S1, determining shot peening strengthening parameters based on material performance parameters and related standards; according to the method, high-amplitude residual compressive stress is introduced through shot peening strengthening, the stress state of the surface and the depth direction of the material is changed, accordingly, crack extension can be restrained, the fatigue life is prolonged, in addition, a plastic deformation layer is induced to be generated under the surface depth in the shot peening process, the microstructure of the material is improved, and the anti-fatigue performance of the material is improved; through femtosecond laser shock, surface defects can be effectively removed, the surface compactness can be improved, microcracks can be reduced, and a refined grain structure can be generated, so that the strength and toughness of the material are further enhanced, the high-cycle fatigue performance of the material is further improved, the two are combined, the residual stress state is optimized, and the surface integrity is improved. The fatigue performance of the Ti6Al4V titanium alloy is remarkably improved.

The invention relates to a high-refractive-index, high-toughness and yellowing-resistant epoxy resin composite material and a preparation method thereof, and belongs to the technical field of high polymer material preparation. The epoxy resin composite material comprises 100-140 parts of an epoxy prepolymer, 20-50 parts of a curing agent, 0.2-5 parts of rubber particles, 0.1-4 parts of an anti-yellowing additive and 5-20 parts of a functional auxiliary agent, and through the synergistic effect of the raw materials, the prepared epoxy resin has high refractive index, high toughness and excellent anti-yellowing performance.

The invention provides toughened anti-cracking and anti-corrosion solid waste concrete and a preparation method thereof. Mixing the cement, the fly ash, the slag and the natural aggregate; sequentially adding water, a weakly alkaline regulator and an additive solution containing a polycarboxylic acid water reducer to obtain concrete slurry; and curing to obtain the product. According to the invention, fly ash, slag solid waste and natural aggregate are used as aggregate, a water reducer is added to reduce the water consumption of concrete and improve the fluidity of concrete, and specially-made weakly-alkaline conditioning agent particles are introduced, so that the self-water-absorption-water-release behavior and bridging effect of the particles are utilized to improve the concrete fluidity. The early-stage and later-stage continuous hydration ability of a rubber material in the concrete is enhanced, the self-shrinkage and drying shrinkage resisting effects are achieved, the compactness and corrosion resistance of the concrete are improved, and then the anti-cracking ability of the all-solid waste concrete is improved. The surface of an obtained test piece is free of cracks, the 28d compressive strength reaches 46.6 MPa, the 28d breaking strength reaches 8.5 MPa, the self-shrinkage rate is 0.035%, and the drying shrinkage rate is 0.01%.

The invention is suitable for the technical field of automation equipment control and path planning, and provides a wafer extraction path optimization method based on adaptive heuristic and hierarchical search, comprising the following steps: Step 1, initialization; step 2, heuristic value calculation: calculating an adaptive heuristic function value according to the current node to guide search; step 3, judging whether an end point is reached or not; step 4, path cost calculation is carried out; step 5, judging node expansion: judging whether to expand a current node according to a self-adaptive expansion condition, and preferentially expanding a node which is most likely to approach an end point; step 6, layered search of paths: layered search is carried out gradually from the outer layer to the inner layer, independent path planning is carried out on each layer, and the search range is reduced; step 7, path backtracking is carried out; step 8, updating a search area; step 9, continuing or terminating the search; and step 10, outputting a result. On the premise of ensuring the shortest path, the start-stop frequency of the motor is reduced, the operation efficiency of automatic equipment is improved, the service life of the equipment is prolonged, and the energy consumption is reduced.

The invention discloses an anti-scouring tundish dry material, and relates to the technical field of tundish refractory materials, and the tundish dry material comprises the following raw material components by mass: 28-32% of 3-1mm fused magnesite, 10-20% of alumina powder, 10-20% of alumina powder, and the balance of alumina powder. The invention relates to an ultra-low thermal conductivity refractory brick which comprises the following components in percentage by weight: 22-30% of 1-0mm fused magnesia, 20-28% of 200-mesh fused magnesia, 3-4.5% of phenolic resin, 1-1.4% of rectorite powder, 0.2-0.3% of SiO2 aerogel powder and the balance of 5-3mm fused magnesia. According to the ultra-low thermal conductivity refractory brick, the special layered structure of the rectorite powder and the ultra-low thermal conductivity of the SiO2 aerogel powder are ingeniously utilized; through the synergistic effect of the two components, the tundish dry material successfully solves the problems of insufficient strength and poor thermal insulation performance on the basis of keeping the original good fire resistance, and the efficiency and economical efficiency of a continuous casting process are remarkably improved.

The application discloses an environment-friendly rubber composite material and a preparation method and application thereof, and relates to the technical field of tire rubber materials.The environment-friendly rubber composite material comprises, in parts by mass, 100 parts of a rubber matrix, 10-60 parts of a bio-based filler, 0.5-10 parts of an interface modifier, 1-8 parts of a vulcanizing component and 0.5-5 parts of a crosslinking aid; wherein the rubber matrix comprises natural rubber and butadiene rubber; the bio-based filler comprises at least one of lignin, cellulose or a derivative thereof; the interface modifier comprises a compounded system of a silane coupling agent and a bio-based small molecule containing multiple functional groups; and the crosslinking aid comprises a borate compound and a low-molecular polymer containing a dynamic hydrogen bond structure.The application also provides a preparation method and application of the material.The application improves the proportion of the bio-based material, improves the long-term stability of the interface between the bio-based filler and the rubber matrix, reduces the interface damage accumulation and dynamic heat generation under the action of cyclic load, and improves the fatigue performance and comprehensive service performance of the rubber composite material.

The invention discloses a preparation method for constructing a multistage micro-nano heterostructure based on combination of a laser melting deposition process and a laser shock peening means, which comprises the following steps of: printing by using dry TC4 alloy powder, accumulating a printed TC4 metal printing layer to form a TC4 metal micron layer, performing low-power laser shock peening on part of the TC4 metal micron layer to form a TC4 metal submicron layer, and forming the multistage micro-nano heterostructure. A TC4 metal printing layer is printed on the submicron layer and subjected to high-power laser shock peening to form a TC4 metal nano layer, a TC4 metal printing layer is printed on the nano layer and subjected to low-power laser shock peening to form a TC4 metal submicron layer, printing and cyclic operation are continued on the submicron layer to form a sample, and the sample is obtained through annealing treatment. According to the preparation method disclosed by the invention, a micron layer-nano sandwich composite layer-micron layer multi-stage micro-nano heterostructure is formed, crack propagation is effectively hindered, and the elongation of the material is improved, so that alloy strength and plasticity synergistic strengthening is realized.

The invention relates to UHPC (Ultra High Performance Concrete) containing glass fibers as well as a preparation method and application thereof, and belongs to the technical field of novel building materials. The concrete is prepared from the following components in parts by mass: 400 to 500 parts of cement, 40 to 50 parts of silica fume, 600 to 800 parts of fine aggregate, 1000 to 1200 parts of coarse aggregate, 30 to 50 parts of steel fiber, 10 to 30 parts of glass fiber, 120 to 150 parts of water and 6 to 8 parts of water reducing agent. The glass fibers are modified superfine glass fibers and are modified by lithium oxide and sodium hydroxide. The durability of the ultra-fine glass fiber in a high-alkalinity environment is remarkably improved through modification treatment, the problem that the performance of traditional ultra-fine glass fiber declines rapidly due to insufficient chemical stability is solved, and the anti-cracking performance, the impact resistance and the long-term durability of UHPC are comprehensively improved from the macroscopic level to the microscopic level.

The present invention belongs to the technical field of organic polymer compounds, and in particular to a PETG sheet and a preparation method thereof. The PETG sheet of the present invention is made of the following components by mass: 30-40 parts of PETG, 5-10 parts of acrylonitrile-butadiene-styrene copolymer, 10-15 parts of polyethylene terephthalate, 0.5-1 parts of a toughening crosslinking agent, 1-3 parts of a chain extender, 1-5 parts of pentaerythritol stearate, 60-100 parts of an inorganic filler, 1-1.5 parts of an aluminate coupling agent, and 0.5-1.0 parts of an antioxidant; wherein the toughening crosslinking agent is prepared by copolymerization of 2-cyclohexyl acrylate, maleic anhydride, and butyl acrylate. The present invention improves the problem that the PETG sheet has strong hygroscopicity during processing and the insufficient ability of the PETG sheet to resist thermal deformation by using a toughening crosslinking agent.

The invention belongs to the technical field of hard alloys, and particularly relates to a high-wear-resistance tungsten steel alloy and a preparation method thereof. The raw materials of the high-wear-resistance tungsten steel alloy comprise WC, Al-Sn-B nanometer oxide and a SiN / GO toughening phase, the tungsten steel alloy is designed to be of a gradient structure, the surface layer has hardness and wear resistance, the inner layer has good fracture toughness, WC is the main hard phase in the tungsten steel alloy, extremely high hardness and wear resistance are provided, and the high-wear-resistance tungsten steel alloy can be used for manufacturing the high-wear-resistance tungsten steel alloy. The Al-Sn-B nano oxide is added to form a sintering aid, so that the diffusion mass transfer process of WC in high-temperature solid-phase sintering is enhanced, the densification of the tungsten steel alloy is accelerated, and the fracture toughness of the tungsten steel alloy is improved by adding the SiN / GO toughening phase and utilizing a graphene toughening mechanism; the prepared high-wear-resistance tungsten steel alloy has excellent wear resistance and high-temperature oxidation resistance, and good toughness, strength and bending resistance.

The invention discloses a nickel-based tungsten-doped high-temperature self-lubricating material and a preparation method thereof. The method comprises the steps that firstly, tungsten powder is pretreated through aqua regia and then poured into electroplating liquid to be subjected to ultrasonic mixing, and nickel-plated tungsten powder is prepared; 2, the nickel-plated tungsten powder, nickel powder, molybdenum powder, rare earth yttrium powder and calcium fluoride are proportioned and weighed, and composite material raw powder is obtained; 3, pouring the composite material raw powder into an ethanol solution, mixing, stirring and drying to obtain composite powder; 4, carrying out ball milling on the composite powder to obtain uniform composite powder; and 5, carrying out plasma sintering on the composite powder to obtain the nickel-based tungsten-doped high-temperature self-lubricating material. According to the nickel-based tungsten-doped high-temperature self-lubricating material, the Ni-Mo alloy serves as a base body, the high-temperature strength, hardness, abrasion resistance and self-lubricating performance of the nickel-based tungsten-doped high-temperature self-lubricating material are improved by adding the nickel-plated tungsten powder and the rare earth Y, CaF2 is introduced to serve as a composite lubricant, the self-lubricating effect is enhanced, spark plasma sintering is combined, the compactness of the material is improved, and the service life of the material is prolonged. The method is suitable for aerospace, high-speed carrying and other fields.

The invention discloses a geometric guidance and task self-adaption multi-thread sphere decoding method and a related device, and belongs to the technical field of wireless communication, and the method comprises the steps: obtaining a channel matrix of a system model, and carrying out the QR decomposition of the channel matrix of the system model, and obtaining a QR decomposition result; constructing a search tree based on a result of the QR decomposition; dynamically updating the search radius and the optimal solution of the search tree, and determining a geometric threshold value; according to the search radius and the optimal solution of the updated search tree and the determined geometric threshold value, searching the search tree through multiple threads according to an SE sequence to obtain a symbol vector of a transmitting antenna in a system model, and completing multi-thread sphere decoding of geometric guidance and task self-adaption. Meanwhile, the search time is shortened, and the search task scheduling and synchronization cost is reduced.

The invention discloses a differentiated charging blasting method capable of efficiently utilizing energy. The method comprises the steps that a center blasting hole, a slotting hole, an auxiliary slotting hole, an auxiliary slotting guide hole, an auxiliary hole, a peripheral hole and a peripheral guide hole are sequentially formed in a working face; preparing explosives with different detonation velocities and different detonation volumes; the explosives with different detonation velocities and different detonation volumes are correspondingly loaded into different blast holes respectively; blocking the blast hole with stemming; and performing millisecond detonation, controlling a blasting time sequence, and optimizing a propagation path and action time of blasting waves. According to the differentiated charging blasting method capable of efficiently utilizing the energy, explosives with different dynamic and static effects are filled for different blast holes, and the effects of accurately and efficiently utilizing the dynamic and static energy of the explosives, improving the blasting effect and reducing blasting hazards are achieved by combining millisecond blasting.

The invention belongs to the technical field of cement-based building materials, and particularly relates to an enhanced cement-based cover plate and a preparation method thereof. According to the reinforced cement-based cover plate, the boric acid ester modified basalt fiber bars with good mechanical properties are added, and the acidified calcium sulfate whiskers and the sulfydryl modified fly ash are used together, so that the reinforced cement-based cover plate is prepared, the compressive strength and the tensile strength of the cover plate are remarkably improved, and meanwhile, the abrasion coefficient is effectively reduced.

The application discloses basalt fiber seawater and sea sand concrete and a preparation method and application thereof, and belongs to the technical field of building materials. The basalt fiber seawater and sea sand concrete is composed of the following components in parts by mass: cement 35-45 parts, sea sand 65-75 parts, gravel 105-120 parts, seawater 15-20 parts, water reducing agent 0.1-0.3 parts and basalt fiber 0.1-1 part. The raw material selection and mix proportion design improve the toughness and crack resistance of traditional concrete. The SEM result shows that the basalt fiber is mixed in the seawater and sea sand concrete, the fiber 'bridges' the cracks and improves the pore connection state, which is beneficial to improving the crack resistance, toughness, salt and alkali environment applicability and residual mechanical properties after high temperature, and the basalt fiber seawater and sea sand concrete can be used for a coastal tunnel shield segment, a FRP concrete structure and repair of existing structures in a marine environment.

The invention relates to the technical field of building materials, and discloses a preparation process of super-retarded cement stabilized macadam, which comprises the following steps: selection and surface treatment of raw materials: selecting super-retarded cement, graded macadam, fly ash or mineral powder, a retarder and water, and carrying out nanoscale surface treatment on the macadam to improve the binding power of the macadam and cement paste, so as to obtain the super-retarded cement stabilized macadam; the ratio of the raw materials is as follows: the super-retarding cement accounts for 4%-6% of the total weight of the mixed material, and 0.1%-0.3% of a retarder is doped; the particle size range of the graded broken stone is 5-31.5 mm, and the graded broken stone accounts for 55-65% of the total weight of the mixed material; and the fly ash or mineral powder accounts for 8-12% of the total weight of the mixed material. By adopting the super-retarding cement, three-dimensional dynamic stirring and vacuum degassing processes, the problem of unstable structure caused by non-uniform stirring and bubble residue in the construction process of the traditional cement stabilized macadam material is effectively solved. The three-dimensional dynamic stirring device can be used for mixing in multiple directions, so that materials such as cement, macadam and fly ash are more uniformly distributed.

The present invention discloses a high-toughness, high-crack arrest steel for hydrogen pipelines and a preparation method thereof, and belongs to the technical field of pipeline steel preparation. The high-toughness, high-crack arrest steel for hydrogen pipelines includes the following components by mass percentage: C: 0.04-0.07%; Si: 0.30-0.45%; Mn: 0.7-1.0%; Mo: 0.15-0.25%; V: 0.05-0.08%; Nb: 0.02-0.06%; P≤0.012%; S≤0.005%; the balance is Fe. The present invention realizes gradient temperature rolling through controlled rolling and controlled cooling to obtain a gradient flattened ferrite structure, which is beneficial to changing the crack propagation path under the action of low-temperature impact loads, delaying the crack propagation process, and improving the low-temperature toughness and crack arrest performance of hydrogen pipeline steel. In addition, the present invention uses the synergistic effect of cyclic phase transformation and Nb and V micro-alloying to refine the microstructure during the gradient temperature rolling process, further improving its strength and toughness.

The invention discloses a path planning method, electronic equipment and a computer readable storage medium. The method comprises the steps that initial paths of all moving objects under different preset resource priority information are acquired; determining path collision information among the moving objects according to the initial paths of the moving objects under the same preset resource priority information; the path collision information corresponding to the preset resource priority information is input into the path optimization network model, multiple path collision-free probabilities are obtained, and the path collision-free probabilities represent the collision-free probabilities when the moving objects travel according to the corresponding initial paths under the same preset resource priority information; and in response to the condition that the target path collision-free probability meets the preset requirement, performing path expansion processing on the initial path of each moving object when the target path collision-free probability is obtained, so as to obtain the target path of each moving object. Therefore, the path planning efficiency is improved.

The present application relates to the field of microbial technology, and specifically discloses a plant salt-tolerant growth-promoting bacterium JP2-21 and its application; the plant salt-tolerant growth-promoting bacterium JP2-21 was deposited in the General Microbiological Center of the China Microbiological Culture Collection Administration on October 24, 2023, with a deposit number of CGMCC No.28731, and is classified and named Bacillus atrophaeus ( Bacillus atrophaeus ); The growth-promoting bacteria JP2‑21 of the present application can efficiently produce auxin, and its IAA production capacity is 16.19 mg / L. It has the ability to solubilize phosphorus, fix nitrogen, and chelate iron, and can effectively promote the growth of tomatoes, as well as improve the salt tolerance of tomatoes. The growth-promoting bacteria JP2‑21 of the present application also has disease resistance, and can significantly inhibit various pathogens such as pear gray mold, pear ring pattern, apple rot, poplar rot, pepper phytophthora, and wolfberry root rot, reduce the spread of diseases, and has broad application potential.

The invention discloses a reinforcing structure and a reinforcing method for a convex tenon and a concave tenon of a pipe piece in a prefabrication stage. The reinforcing structure comprises a reinforcement cage, crossed ribs, spiral ribs and an anti-cracking net. Wherein the reinforcement cage and the concrete are poured together to serve as a main structure for improving the overall bearing capacity of the duct piece; the crossed ribs are connected with the reinforcement cage and used for improving the bearing capacity of concrete at the tenons of the duct pieces; the spiral bars are connected with the crossed bars, and the spiral bars and the crossed bars jointly improve the bearing capacity of concrete at the tenon and the tenon of the duct piece; and the anti-cracking net is used for wrapping the concrete and gathering the concrete at the concave tenons and the convex tenons into a whole so as to improve the bearing capacity of the convex tenons and the concave tenons of the duct pieces. According to the method, a combination mode of the anti-cracking net and the steel bars is adopted to perform targeted reinforcement on weak stress parts, namely the convex-concave tenons, when shield tunnel segments are staggered and subjected to elliptic change, so that not only can the diseases such as cracking, cracking and water leakage of the convex-concave tenons in the tunnel construction and operation process be effectively relieved, but also the reinforcement mode is low in manufacturing cost, and the construction is convenient.

This invention discloses a FRP-concrete composite beam with built-in damage self-monitoring and its construction method, belonging to the field of civil engineering structural technology. The composite beam includes a concrete slab, an FRP profile, a shear reinforcement layer, intelligent connectors, and a protective shell. The intelligent connectors penetrate the shear reinforcement layer and are anchored to the FRP profile. Strain sensing elements are embedded internally, and driving elements are externally located. When the preload of the connector decreases, the driving elements actively extend to restore the preload. The shear reinforcement layer is a perforated plate filled with a tough material to enhance the shear resistance of the interface. The protective shell is a U-shaped precast concrete shell that wraps around the FRP web, providing lateral restraint and protection. This invention achieves real-time monitoring of FRP-concrete interface damage and automatic preload compensation, significantly improving the shear performance, integrity, and durability of the structure. It has advantages such as self-sensing, self-repair, and easy construction, and is suitable for long-span bridges, marine engineering, and intelligent building structures.

The invention discloses an aged steel slag drainage asphalt mixture OGFC-10 and a preparation method thereof, and belongs to the technical field of steel slag resource utilization. Through the steel slag aging technology, the content of f-CaO in the converter tailings and the electric furnace tailings is reduced, the limitation that the content of f-CaO in the steel slag is high is broken through, and the steel slag is used for preparing the drainage asphalt mixture OGFC-10; the aged steel slag drainage asphalt mixture OGFC-10 is prepared from limestone not exceeding 3 mm, aged converter tailings not exceeding 5 mm, basalt 3-5 mm, basalt 5-10 mm, aged electric furnace tailings 5-10 mm, limestone mineral powder and SBS modified asphalt. The pavement performance test result of the obtained product shows that the material dynamic stability, the bending strain, the residual stability, the freeze-thaw splitting strength ratio, the friction coefficient and the water seepage coefficient of the drainage asphalt mixture doped with the aged steel slag are improved compared with those of the drainage asphalt mixture doped with the unaged steel slag, and the drainage asphalt mixture has wide application prospects and important environmental benefits.

The present invention provides a piezoelectric asphalt mixture and an evaluation method for load-piezoelectric-electrothermal conversion thereof, which belongs to the field of piezoelectric asphalt mixture evaluation, and solves the problems that it is difficult to collect, store, utilize, and evaluate electrical energy in piezoelectric pavements, and that the durability of self-healing asphalt is poor and the operation is complicated. The present invention firstly adopts the method of fully mixing polyvinylidene fluoride-hexafluoropropylene powder and carbon black powder with matrix asphalt to obtain modified asphalt with electrical activity and conductivity. AC-13F aggregate is selected, and 40% of the aggregates of 4.75 mm and above are replaced by equal volume of piezoelectric ceramic aggregates, and steel fibers are added to improve the conductivity of the mixture. The surface temperature change of the Marshall specimen after applying repeated loads is observed by an infrared thermal imager to evaluate the effect of load-generation-electrothermal energy conversion. The piezoelectric asphalt mixture and the evaluation method of load-piezoelectric-electrothermal conversion of the present invention can effectively utilize road pressure and vibration energy, and the generated electric heat can improve the self-healing performance of the asphalt mixture.

A semiconductor structure and a method for forming the same, the structure comprising: a substrate, the substrate comprising a chip region, the chip region comprising a device region and a cutting road region surrounding the device region; a guard ring structure located on the cutting road region, the guard ring structure surrounding the device region, the guard ring structure comprising: a plurality of first metal layers overlapping in a direction perpendicular to the substrate surface and a second metal structure, the second metal structure comprising at least one second metal layer, the second metal layer being located between two adjacent first metal layers, any second metal layers being separated from each other, and the center lines of two adjacent second metal layers not overlapping. The performance of the semiconductor structure is improved.

The invention relates to the technical field of carbon fiber reinforced resin-based composite materials, in particular to a prefabricated interlayer toughening structure-based high-speed impact resistant carbon fiber / resin composite material integral forming simple preparation process, which comprises the following steps of: placing a prefabricated interlayer toughening structure between adjacent carbon fiber cloth layers coated with phenoxy resin modified epoxy resin glue solution; and finally, carrying out integral hot-press molding. The prefabricated interlayer toughening structure is obtained by impregnating a chopped fiber felt with a phenoxy resin modified epoxy resin glue solution and performing prepolymerization under heating and pressurizing conditions. According to the invention, the chopped fibers are introduced into the interlayers of the carbon fiber / resin composite material in the form of a prefabricated interlayer toughening structure, and the problem that the chopped fibers are not uniformly distributed in the interlayer area can be effectively solved without changing the original preparation process of the composite material. In addition, through the synergistic effect of phenoxy resin and chopped fibers, stress transfer between layers of the carbon fiber / resin composite material can be more uniform and effective, and crack propagation can be delayed through bridging, deflection and other toughening mechanisms.

The invention belongs to the technical field of photoelectric integration, and relates to a heterostructure substrate based on a spinel ceramic substrate and a preparation method and application thereof, and the preparation method comprises the following steps: plating a first diamond film on the surface of the spinel ceramic substrate; bonding one surface of a donor piezoelectric substrate with the surface of the second-type diamond film, and bonding the other surface of the donor piezoelectric substrate with a supporting substrate; the surface of the first-type diamond film is bonded with the surface of the second-type diamond film; the supporting substrate is stripped from a part of the donor piezoelectric substrate by adopting an intelligent cutting process to form an LN / LT piezoelectric film, and the diamond-like film / piezoelectric film composite heterogeneous substrate is obtained and can be effectively used in a high-section radio frequency chip filter. Compared with the prior art, the method can effectively improve the thermal conductivity, thermal stability and electrical performance of the substrate, and has high application value.