72results about How to "Stable formation" patented technology

The invention discloses a flame retardant with a double-layer microcapsule structure, a flame-retardant polyurethane material as well as a preparation method and application of the flame-retardant polyurethane material, and belongs to the technical field of flame retardants. The material is a multifunctional flame retardant with a double-layer core-shell structure, a shell layer is calixarene boric acid resin, a middle shell layer is melamine phthalic anhydride resin, and a core layer is hydroxyapatite modified aluminum hypophosphite. Due to the high cross-linking degree between polymers, the flame retardance of polyurethane is improved, meanwhile, the mechanical property of the polyurethane is improved, and the flame retardance and seawater corrosion resistance of the material are synergistically enhanced through hydroxyapatite dispersed in the core layer. The double-shell layer has excellent hydrophobicity, prevents internal aluminum hypophosphite from being affected with damp and has anti-fouling and self-cleaning effects, and the prepared flame-retardant polyurethane composite material has excellent tensile and flexible characteristics due to a double network of hydrogen bonds and covalent bonds.

The invention discloses a lithium iron phosphate positive electrode material rich in oxygen vacancies and a preparation method and application thereof.The preparation method of the lithium iron phosphate positive electrode material rich in oxygen vacancies has the advantages that the number of heating times can be set in a programmable mode, the heating and cooling speed is high, and the heat treatment time is short; the volatilization amount of the lithium salt is small, and the method is more economical and environment-friendly; according to the method, a programmable constant-current power supply is used for electrifying and heating the carbon-based Joule thermal material, and the carbon-based material is used as a heating stage to realize ultrafast synthesis of the lithium iron phosphate material through a physical contact heat transfer effect; and the oxygen vacancy content can be adjusted by regulating and controlling parameters such as temperature and time. The heat treatment is performed in a specific atmosphere (such as vacuum, inert gas, reducing gas and oxidizing atmosphere), so that the reoxidation of the oxygen vacancies can be reduced, and the formation and the stabilization of the oxygen vacancies are facilitated; the adjustable and controllable range of the oxygen vacancy concentration in the lithium iron phosphate material prepared by the preparation method disclosed by the invention is 2.198 E12 to 7.382 E13Spins / mm < 3 >.

The invention relates to the technical field of grease processing, in particular to a preparation method for extracting refined vegetable oil fatty acid. A preparation method for refined vegetable oil fatty acid extraction comprises the following steps: vegetable oil refining treatment and refined vegetable oil fatty acid separation and extraction. In the vegetable oil refining treatment process, the degummed vegetable oil is subjected to deacidification and decolorization treatment by using the modified rice hull-based porous carbon, so that pigments, free fatty acids and heavy metal components in the vegetable oil can be efficiently adsorbed, the effects of adsorption, deacidification and decolorization are achieved at the same time, and the vegetable oil refining efficiency is effectively improved; vegetable oil refining quality is improved, so that the extraction effect of refined vegetable oil fatty acid is improved; in the separation and extraction process of fatty acid in the refined vegetable oil, the contact between urea and saturated fatty acid in the refined vegetable oil can be promoted by adding the crystallization inclusion additive, and a stably-clathrated composite crystal is quickly formed, so that the extraction purity of unsaturated fatty acid is improved.

The invention relates to the technical field of heat exchangers, and particularly discloses a multi-channel heat exchanger which comprises an upper cylinder, a lower cylinder is arranged at the bottom end of the upper cylinder, the upper cylinder and the lower cylinder are connected through a flange, a circular plate is fixedly connected to the bottom of the inner wall of the upper cylinder, and a plurality of heat exchange pipes are fixedly inserted into the surface of the circular plate. The bottom of the outer wall of the heat exchange pipe is fixedly connected with a baffle, an O-shaped sealing ring is detachably installed on the annular side of the baffle, a liquid inlet assembly is arranged on the top of the upper barrel, wall attaching assemblies are arranged on the inner side and the lower portion of the upper barrel, and each wall attaching assembly comprises a long rod arranged in the heat exchange pipe and further comprises a sleeve fixedly connected to the top of the inner wall of the upper barrel. Through cooperation of the structure, cold fluid can flow downwards along the inner wall of the heat exchange tube in a liquid film shape, due to the fact that the liquid film is thin, the heat exchange effect between cold and hot media can be improved, and the heat exchange effect can be improved without adopting a long tube pass and shell pass mode.

The invention relates to fireproof and heat-insulating glass and a preparation process thereof, and relates to the field of fireproof and heat-insulating materials, the fireproof and heat-insulating glass comprises a heat-insulating film layer I, a fireproof gel layer I, a glass substrate, a fireproof gel layer II and a heat-insulating film layer II, the fireproof gel layer I and the fireproof gel layer II are prepared by adopting a mixed gel solution, the mixed gel solution is prepared from the following raw materials in parts by mass: 80 to 100 parts of bi-crosslinking gel monomer, 5 to 10 parts of crosslinking agent, 20 to 30 parts of composite flame retardant and 1 to 3 parts of initiator. The preparation process comprises the following steps: preparing a mixed gel solution, preparing the fireproof gel layer I and the fireproof gel layer II on the surface of the glass substrate, hot-pressing and laminating the heat insulation film layer I to the surface of the fireproof gel layer I, and hot-pressing and laminating the heat insulation film layer II to the surface of the fireproof gel layer II to obtain the fireproof heat insulation glass. The fireproof and heat-insulating glass has the effect of improving the interlayer binding force of the fireproof and heat-insulating glass, the stability can be improved, and the fireproof and heat-insulating performance is further improved.

A negative electrode material and a battery, the negative electrode material comprising an active material, the active material comprising a first matrix and a second matrix, the negative electrode material having pores, the pore volume of the negative electrode material being M, the pore volume of the negative electrode material measured after being maintained at a pressure of 80 MPa for 1 hour being N, the particle space collapse ratio of the negative electrode material being P, P=(M-N) / M, wherein 0.002 cm 3 / g≤M≤0.12cm 3 / g, 0.05≤P≤0.85. The present application adjusts the rigidity strength of the negative electrode material by controlling the pore volume of the negative electrode material before and after pressurization, thereby improving the electrochemical performance of the negative electrode material while ensuring the structural stability of the negative electrode material.

A feeding device of an overturning dust remover comprises a conveying belt, and all materials are fixedly arranged on a bearing. The transfer mechanism is periodically and movably connected to the rack, the transfer mechanism is provided with two temporary stop stations, and one temporary stop station is in butt joint with the conveying belt and is used for receiving materials; and the material pushing mechanism corresponds to the other temporary stop station of the transfer mechanism, is provided with a push plate which moves linearly and is used for pushing out materials on the transfer mechanism. The empty bottle positioning device is compact and reasonable in structure and convenient to operate, empty bottles are positioned by adopting a support, and meanwhile, the transfer mechanism which moves periodically is adopted, so that the labor intensity of workers is reduced, and the production efficiency is improved. According to the material conveying device, a plurality of materials can be conveyed on the premise of keeping an array, meanwhile, the moving distance of the materials can be accurately controlled, accurate butt joint with a turnover mechanism is facilitated, meanwhile, the materials can be orderly conveyed in a straight line through the linearly-distributed roller sets, follow-up clamping dust removal is facilitated, and the overall stability is improved.

The invention relates to a culture method of lactic acid bacteria adapting to vaginal environment and strongly adhering to vaginal epithelial cells, which comprises the following steps: inoculating a lactic acid bacteria seed solution obtained by culture into a liquid culture medium, standing and culturing until the OD600 value of the culture solution is 0.3-0.6, and adding a preparation for continuous culture, and obtaining the lactic acid bacteria strongly adhering to the vaginal epithelial cells after the fermentation is finished. The preparation comprises L-arabinose. The invention further relates to application of the L-arabinose in preparation of a preparation for improving the vaginal epithelial cell adhesion capacity of the lactic acid bacteria, and by adding the related preparation in the specific growth stage of the lactic acid bacteria, rapid proliferation of thalli and stable formation of surface hydrophobic protein can be guaranteed; therefore, the adhesion and planting capabilities of the cultured lactic acid bacteria are further improved.

The invention provides a lithium slag-based cat litter and a preparation method thereof. The preparation method of the lithium slag-based cat litter comprises the following steps: obtaining a lithium slag raw material; calcining the lithium slag raw material, and cooling to obtain modified lithium slag; carrying out wet ball milling on the modified lithium slag, a siliceous auxiliary material and an additive, sieving, and drying the undersize material to obtain a powder material; adding plant fiber powder into the powder, and uniformly mixing to obtain mixed powder; feeding the mixed powder into a disc granulator, spraying a first solution, and granulating through the granulator to obtain a blank body; and drying the blank body to obtain the lithium slag based cat litter. Wherein the lithium slag raw material comprises lepidolite slag or lepidolite; the first solution comprises a binder, a bactericide and deionized water. In the invention, the lithium slag is used as a raw material to prepare the lithium slag-based cat litter, so that large-amount doping of the lithium slag, namely high-added-value recycling, can be realized.

The invention belongs to the technical field of warm-keeping clothes, and discloses a down filling parting strip, a down filling layer structure and a warm-keeping clothes manufacturing method. The down filling parting strip comprises a separating part, a first attaching part and a second attaching part, the first attaching part is sewed at one end of the separating part, the first attaching part is provided with a first attaching face, and the first attaching face is used for being bonded with fabric; the second fitting part is sewed at the other end of the separation part and is provided with a second fitting surface, and the second fitting surface is used for being bonded with the lining; the down filling layer structure comprises a fabric, a lining, a filler and a first partition assembly, wherein the first partition assembly comprises a plurality of down filling partition strips. The down-filled parting strip does not need to be sewn with a lining and a fabric through quilting lines, so that needle holes cannot be formed in the lining and the fabric, the condition of down running is avoided to a great extent, and meanwhile, the tear resistance of clothes is improved through the needle-hole-free structure.

The invention relates to a copper paste for forming a sintered copper pillar and a method for manufacturing a bonded body. A copper paste for forming a sintered copper pillar, which is used for forming a sintered copper pillar in which members are joined to each other, and which contains metal particles and an organic dispersion medium, the metal particles containing copper particles, and the organic dispersion medium containing 50-99% by mass of a high-boiling-point solvent having a boiling point of 280 DEG C or higher based on the total mass of the organic dispersion medium.

The wear-resistant iron-based welding wire comprises an outer skin and a powder core, the outer skin is made of stainless steel, and the powder core comprises metal nitride, cemented carbide particles, metal powder, a deoxidizing agent and other powder. The metal nitride is adopted in the powder core of the welding wire to provide nitrogen, the phase of a welding layer is stabilized to be austenite, nickel is replaced, and the welding layer of the welding wire has the non-magnetic characteristic and meanwhile has high abrasion resistance during welding.

This invention relates to a processing method for soft and tender abalone with a soft, glutinous texture, comprising the following steps: S1, pre-treating fresh abalone to obtain pre-treated abalone meat; S2, placing the pre-treated abalone meat under hot air conditions, first heating it to a first temperature and holding it at that temperature, then raising the temperature to a second temperature and holding it at that temperature, to obtain enzyme-inactivated abalone meat; the first temperature does not exceed 55°C, and the second temperature is at least 10°C higher than the first temperature; S3, enzymatically hydrolyzing the enzyme-inactivated abalone meat with a protease, and after inspection and packaging, obtaining soft and glutinous abalone with a soft, glutinous texture. This invention, through gradient temperature inactivation of enzymes and three-parameter synergistic regulation of enzymatic hydrolysis, produces soft and glutinous abalone with a sticky adductor muscle adhesiveness >25N, a soft, glutinous texture uniformity >90%, and a 100% success rate in achieving the desired soft and glutinous texture. The method of this invention is simple and can achieve large-scale and continuous production. It is suitable for the industrial processing of high-end ready-to-eat soft-boiled abalone, pre-cooked soft-boiled abalone, and other products, significantly improving the added value and market competitiveness of abalone products.

This invention belongs to the field of membrane separation technology, specifically relating to a method for preparing a polytetrafluoroethylene (PTFE) composite membrane. The preparation method includes: (1) dissolving a spinning aid, a barium source, a titanium source, and a manganese source in a composite solvent, and then electrospinning to obtain precursor fibers; subsequently, blending the precursor fibers with a grain refiner, and heat-treating to obtain doped ferroelectric fiber bundles; (2) further polymerizing organic acids, inorganic acids, conductive fillers, and conductive polymers with monomers and oxidants to finally obtain a conductive polyaniline composite; (3) incorporating Mxene and the conductive polyaniline composite into an aqueous PTFE emulsion, and then further incorporating the doped ferroelectric fiber bundles and stirring to obtain a suspension; the suspension is then coated, post-treated, and kept warm to obtain a PTFE composite membrane. This invention improves the long-term fouling resistance of the PTFE membrane by doping the doped ferroelectric fiber bundles, the conductive polyaniline composite, Mxene, and PTFE.

The present invention provides a bearing for a fluid pump. When the fluid pump is working, a positive pressure area (28) for fluid pumping out and a negative pressure area (27) for fluid inflow are formed in the fluid pump. A fluid supply groove (253) and a fluid return groove (254) extending in the axial direction are respectively formed on the wall of the shaft hole (26) of the bearing (25). The fluid supply groove (253) is connected to the positive pressure area (28), and the fluid return groove (254) is connected to the negative pressure area (27). Moreover, the fluid supply groove (253) is in the shape of a blind groove. The present invention can reduce the clamping force of the oil seal, or directly omit the oil seal, thereby reducing the manufacturing cost of the oil pump.

The present invention discloses a device for recycling waste heat on the surface of a rotary kiln, comprising a heat absorbing device, a plate air inlet, a fan and a burner; the heat absorbing device is used to recover waste heat at the baffle belt, and is symmetrically arranged on both sides of the baffle belt; the plate air inlet is used to recover waste heat on the surface of the rotary kiln, and can move to the highest temperature point on the surface of the rotary kiln; the heat absorbing device is connected to the fan through a fixed air duct, and the plate air inlet is connected to the fan through an adjustable air duct; the fan is connected to the burner; the heat absorbing device comprises a flow guide, a heat pipe flow guide and a baffle, the flow guide is used to guide the hot air in the tangential direction of the rotary kiln into the heat absorbing device, the heat pipe flow guide is used to absorb the radiant heat from the surface of the rotary kiln and heat the passing air, and the baffle is provided with barbs that can block the entry of low-temperature air. The present invention also discloses a method for recycling waste heat on the surface of a rotary kiln. The present invention has a simple structure, is easy to install and maintain, has a low cost, has a high waste heat utilization rate, and is suitable for popularization and application.

The invention relates to the technical field of materials, in particular to a carbon fiber material workpiece sprayed with a stainless steel coating on the surface and a preparation method of the carbon fiber material workpiece. The carbon fiber material workpiece comprises a carbon fiber matrix, a resin layer arranged on the surface of the carbon fiber matrix, a transition layer formed on the surface of the resin layer and a stainless steel layer formed on the surface of the transition layer. Compared with the prior art, the transition layer is additionally arranged, on one hand, the hardness of the stainless steel layer on the surface layer can be improved, on the other hand, the bonding strength between the stainless steel layer and the carbon fiber matrix can be improved, the service life of the carbon fiber material workpiece can be maintained, and especially under the condition that the temperature of the service environment is high, the service life of the carbon fiber material workpiece is prolonged. It can be guaranteed that the coating has excellent stability and is not prone to falling off.

There is provided a duplex stainless steel tube including a chemical composition consisting of, in mass%, C: 0.008 to 0.030%, Si: 0.10 to 0.70%, Mn: 0.80 to 2.60%, P: 0.030% or less, S: 0.0001 to 0.0050%, O: 0.0004 to 0.0150%, Sn: 0.0001% or more to less than 0.0100%, Cu: 0.10 to 2.50%, Ni: more than 2.50 to 5.50% or less, Cr: 21.5 to 25.5%, Mo: 0.10 to 0.50%, N: 0.050 to 0.200%, Al: 0.200% or less, and optional elements, with the balance: Fe and impurities, wherein 4S + 8O + Sn is 0.0040 to 0.0900, and 4S + Sn is 0.0180 or less.

The utility model relates to a compressed waveguide cavity type microwave plasma torch, comprising an input waveguide, the input end of which is provided with a front end interface, and the input end of the input waveguide is connected with a microwave generating device through the front end interface and is used for inputting microwaves; the input end of the tapered waveguide is connected with the output end of the input waveguide, and the tapered waveguide is used for compressing microwaves and generating standing waves at the output end; the first air inlet is connected with the side wall of the input waveguide at a set angle; the second air inlet is connected with the side wall of the tapered waveguide at a set angle; the input end of the reaction waveguide is connected with the output end of the tapered waveguide, the output end of the reaction waveguide is connected with the input end of the connection waveguide, and the output end of the connection waveguide forms a flame ejection port. According to the utility model, the plasma torch can be stably formed in the fixed area in the waveguide cavity in the microwave transmission process without depending on any traditional plasma torch constraint structure.

The invention belongs to the technical field of biomedical materials, and discloses a mechanically-enhanced integrated three-dimensional micro-nanofiber scaffold and a preparation method thereof. The preparation method comprises the following steps: carrying out electrostatic spinning on hydrophilic and hydrophobic high polymer materials to obtain a micro-nanofiber membrane, foaming by using a sol-containing foaming solution to obtain a three-dimensional micro-nanofiber scaffold, filling the sol, and freeze-drying to obtain the mechanically enhanced integrated three-dimensional micro-nanofiber scaffold. The three-dimensional micro-nano fiber material and the freeze-drying stent in the stent form a continuous integrated interpenetrating network structure, the integrity is good, layering is not prone to occurring, the mechanical property is remarkably enhanced, the stent has more excellent and controllable surface post-treatment characteristics, and particularly, the stent can be conveniently and rapidly endowed with multifunctionality through two-face anisotropic treatment. Meanwhile, during application, the thickness can be flexibly and conveniently regulated and controlled in a press fit mode, so that different medical requirements are met.

The present invention discloses an injection mold for producing inspection wells, and the key points of the technical solution are that the injection mold includes two side modules that can be linearly pulled out laterally, and the side module structures are symmetrical with each other. The side modules are provided with a first mold cavity for injection molding the well body, a second mold cavity for molding the main receiving pipe, and a third mold cavity for molding the branch pipe. The second mold cavity and the third mold cavity are both semi-cylindrical, and the axes of the second mold cavity and the third mold cavity are perpendicular to each other. One end of the second mold cavity and the third mold cavity are connected to the first mold cavity and the ends of the two are connected. A notch for connection is provided at the connecting portion of the second mold cavity and the third mold cavity. The advantages of the present invention are: 1. The overall structure of the mold is small and the cost is low; 2. Through the design of the mold cavity, the structure of the injection molded product is stable and the material cost is low.

The invention relates to the technical field of optical waveguide preparation, in particular to an optical waveguide device and a preparation method thereof, and the optical waveguide device comprises a first structural layer which is provided with an optical waveguide, and the front surface of the optical waveguide is provided with a material layer; the second structural layer is connected with the first surface of the first structural layer, and the substrate layer is connected with the second structural layer; the second structure layer and the substrate layer are sequentially provided with a first slot and a second slot corresponding to the optical waveguide, a first guide part is formed on the side wall of the first slot, a second guide part with a first thickness is formed on the back surface of the optical waveguide, and the first guide part and the second guide part are connected to form a back surface growth platform; the section of the back growth platform is of a trapezoid-like structure; a phase-change material layer is arranged on the back growth platform, and a protective layer is further formed on the third outer surface of the phase-change material layer. The back surface growth mode provided by the invention can reduce the influence on the material layer on the front surface of the optical waveguide.

A hafnium compound-containing sol-gel solution contains a lower alcohol having 5 or less carbon atoms that serves as a solvent, a hafnium compound that serves as a hafnium source, and a polyalcohol having either or both of an ether group and a N atom in a molecule, as a wettability improver. The hafnium compound-containing sol-gel solution preferably further contains a stabilizer. It is preferable that the content of the hafnium compound is regulated within a range of 0.05 mass% or more and 10 mass% or less, and the content of the polyalcohol is regulated within a range of 0.05 mass% or more and 20 mass% or less.

The present application relates to a device and method for recycling wastewater and dye used for dyeing chemical fiber fabric, belonging to the field of sewage treatment technology. The device comprises a regulating and storing tank, a collecting box I, a resolving barrel, a collecting box II, a recovery tank I and a recovery tank II. The regulating and storing tank homogenously treats the dyeing wastewater through a stirring shaft, and sends the wastewater into the settling tank of the collecting box I through a water pump I. The dosing assemblies I and II add coagulant and coagulant aid to form floc to precipitate, and the supernatant enters the collecting tank. The two containing boxes in the resolving barrel are filled with activated carbon, and the supernatant is delivered through a water pump II to adsorb dye by the activated carbon. The saturated activated carbon is resolved by the resolving assembly, and the two containing boxes are alternately used by driving of a motor. The resolved dye liquid enters the recovery tank I through the collecting box II for recovery. The treated clean water is sent into the recovery tank II through a water pump IV for recycling. The present application realizes efficient recycling of dye and wastewater, improves the treatment continuity and resource utilization rate, and reduces the production cost and environmental pollution.

The invention discloses a two-dimensional perovskite resistive random access memory device based on an ionic liquid solvent and a preparation method of the two-dimensional perovskite resistive random access memory device, and relates to the technical field of semiconductor materials and functional devices. The resistive random access memory sequentially comprises a glass substrate, a bottom electrode, a two-dimensional perovskite resistive layer and a top electrode from bottom to top. Wherein the resistive layer thin film is a process of preparing a perovskite thin film in air by adopting a solution method. The preparation method of the memory comprises the following steps: spin-coating a butylamine acetate solution dissolved with PbI2 on the surface of a pretreated bottom electrode; and evaporating a metal electrode on the surface of the perovskite thin film layer. The raw materials adopted by the invention are easy to obtain, the preparation process is simple, environment-friendly and high in operability, and the prepared resistive random access memory is simple in structure, low in operation voltage and excellent in performance, the switching ratio can reach 104, and has typical nonvolatile storage characteristics of cyclic reading and writing.

The application discloses a micro-meteorological perception and multi-agent collaborative decision-making method and system for low-altitude scenes, and belongs to the technical field of low-altitude emergency command and unmanned aerial vehicle cluster scheduling. The system comprises a perception layer, a decision-making layer and an execution layer. The perception layer generates a micro-scale three-dimensional wind field through cascading downscaling, and constructs a voxelized risk cost field based on the wind resistance of unmanned aerial vehicles. The decision-making layer adopts a heterogeneous multi-agent collaborative decision-making engine, realizes the binding of a large language model and a domain calculation model through function interface reasoning double channels, combines a four-stage specialized workflow arrangement, and introduces an unoverlappable meteorological veto mechanism. The execution layer generates simulation verification files and supports dynamic strategy correction. The application solves the problems of insufficient micro-scale meteorological perception accuracy of existing systems, lack of meteorological hard constraints in multi-agent collaboration, and low flight safety resilience, and can be widely applied to low-altitude emergency scenes such as medical material delivery and disaster rescue.

The application discloses a kind of graphene oxide-based ink and passive inertia slide control-based multi-modal circuit and manufacturing method, belong to flexible electronics and printed electronics preparation technical field.The ink is composed of graphene oxide aqueous solution, anhydrous ethanol and propylene carbonate, and can realize stable liquid bridge and continuous deposition in micro-gap direct writing.The manufacturing method is first pretreated to flexible matrix, then under the passive conditions of no air pressure, no screw extrusion, no injection pump and no external electric field, inertia slide control direct writing is carried out using the direct writing device equipped with the ink, and the relative motion of flat nozzle needle and matrix forms controllable inertia slip deposition, and the circuit pattern is obtained.Subsequently, the pattern is reduced by region ultraviolet light, so that different regions show differential conductivity, and finally a multi-modal circuit is prepared.The equipment and process flow of the application are simple, the forming resolution is high, and the line width uniformity is excellent.

The utility model discloses an electric rice cooker, including the pot body with inner pot and the pot cover with metal inner cover, the inner pot is equipped with the first sealing surface, the metal inner cover is equipped with the second sealing surface, the first sealing surface and the second sealing surface are pasted and form the rigid sealing area of annular, still include the fan and the air duct with outside communication, the air duct is along the rigid sealing area circumferential arrangement, the fan is used to send the wind of outside into the air duct, to make the wind flow through the air duct and cool the rigid sealing area. The utility model discloses an electric rice cooker, the steam produced when cooking meets the rigid sealing area of low temperature and will become condensed water, and the condensed water will fill the gap between the metal inner cover and the inner pot and form water seal, which can effectively improve the sealing effect between the metal inner cover and the inner pot, thereby effectively avoiding air leakage.

The invention discloses application of a barrier material to a drawing casing and a casing drawing test device and method, and relates to the technical field of petroleum drilling and well cementation engineering.The casing with different cementation coverage rates is prepared by applying the barrier material to the casing; installing the casing pipe attached with the barrier material in a test piece mold, pouring cement into the mold, and curing to form a test piece; and finally, taking out the test piece from the mold, and clamping the test piece into a sleeve drawing device for testing. According to the scheme, by adjusting the cement coverage rate of the shrinkage-size casing and the cement strength of the simulation test piece, the comprehensive influence of the cement coverage rate and the cement strength on the axial resistance of the casing can be systematically reflected, and the limitation of single condition of existing research is made up.

Composites of silicon and various porous scaffold materials, such as carbon materials comprising micropores, mesopores and / or macropores, and methods of making the same are provided. The compositions have utility in various applications, including electrical energy storage electrodes and devices comprising electrical energy storage electrodes.