180results about How to "No settlement" patented technology

The invention discloses an oily diamond grinding liquid and a preparation method thereof, and belongs to the technical field of surface superfine grinding. The grinding liquid comprises the following components by weight percent: 0.001%-10% of diamond micro powder, 0.001%-20% of surface active agent, 0-20% of dispersant, 0-10% of pH value regulator, 0-10% of wetting agent and oil in balancing amount. The oily diamond grinding liquid is mainly applied to surface grinding and polishing of silicon carbide wafers, LED sapphire substrate slices, ceramic, optical fiber, dies, semi-conductor compound wafers and the like. By the use of the oily diamond grinding liquid provided by the invention, the polishing efficiency can be greatly improved; the dispersing performance is good; a uniform and stable state can be kept for a long time; the degree of finish of products polished with the oily diamond grinding liquid is high; the polishing effect is good; no ingredient harmful to human body is contained; the cleaning is easy; and the environmental protection is facilitated.

The invention discloses a conductive composite waterborne adhesive as well as a one-pot preparation method and application thereof. A conductive composite waterborne adhesive material is prepared by adopting a one-pot method by simultaneously initiating grafting polymerization between double bond-containing grafting monomers and hydroxyl-containing waterborne polymers and chemical oxidative polymerization of conductive polymer monomers by adopting the same polymerization initiator, wherein the double bond-containing grafting monomers and the hydroxyl-containing waterborne polymers perform grafting polymerization reaction, and simultaneously, the conductive polymer monomers perform chemical oxidative polymerization; the conductive composite waterborne adhesive prepared by the invention hasgood dispersity, film forming property and chemical stability, can be dispersed in an aqueous solution for a long time in the form of colloid, does not settle, exists stably, has excellent electronicconductivity, solves the problem about dispersity of an adhesive and conductive particles in an electrode slurry preparation process, realizes uniform distribution of various components in an electrode, and ensures high-efficiency electron and ion transportation in the electrode.

The invention discloses a method for preparing a polyamide-amine in-situ intercalation graphene composite material. The method comprises the following steps of: (1) dispersing graphite in an imidazole-compound-containing organic solvent with ultrasonic, and centrifuging to obtain multi-layer graphene suspension; and (2) polymerizing to generate polyamide-amine in the multilayer graphene by adopting an in-situ polymerization method to prepare the polyamide-amine in-situ intercalation graphene composite material. According to the method, natural graphite is directly subjected to ultrasonic exfoliation in the organic solvent to obtain single-layer or multi-layer graphene suspension, the original sp2 structure of the graphene is slightly damaged because an oxidation step is not carried out, the polyamide-amine in-situ intercalation graphene composite material is prepared by using an in-situ polymerization method, so that graphene laminas are spread, interlamellar spacings are enlarged, the polyamide-amine on the surface of the graphene functionally prevents agglomeration of the graphene laminas, the graphene laminas are uniformly dispersed, and the product has good stability and is hardly precipitated.

The invention discloses a method for preparing a high-solid-content and low-viscosity suspended nano calcium carbonate slurry and re-suspended nano calcium carbonate power. The method comprises the following steps: preparing cationic and anionic high-solid-content and low-viscosity nano calcium carbonate slurry by using active nano calcium carbonate subjected to surface modification as a raw material; adding water into the obtained slurry to dilute the high-solid-content and low-viscosity suspended nano calcium carbonate slurry so as to obtain any low-viscosity suspended stable slurry; and then drying and crushing the high-solid-content suspended slurry through a special process so as to obtain nano calcium carbonate power which can be re-suspended in water. The obtained product prepared by the method of the invention is simple in preparation process, good in storage stability and wide in application range, and can be customized according to customer demands.

The invention provides an insecticidal suspending agent containing dinotefuran. The suspending agent is characterized by being prepared from the following components in mass percentage: 1-30% of the dinotefuran, 0.1-35% of a second active component, 3-9% of a wet dispersant, 0.1-0.5% of a de-foaming agent, 1-6% of an anti-freezing agent, 0.1-4% of a thickening agent, 0.1-0.5% of a preservative, 0-2% of a pH (Potential of Hydrogen) adjusting agent, 0-2% of an antioxidant, 0.5-5% of a functional auxiliary agent and the balancing being water, wherein the second active component is one of bifenthrin, imidacloprid, methylamino abamectin benzoate, cyhalothrin, thiamethoxam, indoxacarb, chlorfenapyr, acetamiprid and ethiprole. According to the insecticidal suspending agent, special components are selected and the content of each component is strictly limited; and the prepared insecticidal suspending agent has the very good fast-acting property and lasting period and has the very good prevention effect on tea lesser leafhopper, aleyrodid, thrips, aphids and the like. After the functional auxiliary agent is added, the insecticidal efficacy is improved by 10-12% when being compared with a medicament which is not added with the functional auxiliary agent.

The invention discloses an oil absorption material using cellulose as a base and a preparation method thereof. The preparation method comprises the following steps: pretreating the raw material corn straws with sodium hydroxide and sodium hypochlorite to extract cellulose, and carrying out acetylation modification on the cellulose with acetic anhydride to obtain the natural high-efficiency oil absorption material. The technical scheme disclosed by the invention has efficient adsorption effect on marine oil spill; the oil absorption rate can reach more than 60 times; and the preparation method has the advantages of simple process and easy recovery.

The invention relates to the technical field of lithium ion battery diaphragm preparation, and discloses ceramic slurry, a ceramic composite diaphragm and a lithium ion battery. The slurry comprises deionized water, ceramic particles, a thickening agent, a binder, a dispersing agent and a wetting agent, wherein the dispersing agent is an amphiphilic high-molecular compound with a comb structure. The ceramic composite diaphragm prepared from the slurry is high in thermal stability, puncture resistance and liquid absorption capacity, and the ceramic coating is not easy to fall off in an electrolyte when being used in the lithium ion battery, so that the cycling life of the battery can be prolonged, and the consistency of cells and the safety of the battery can be improved.

The invention relates to the preparation of organic macromolecule compounds and the technical field of pipeline systems, in particular to a method for preparing a poly alpha-olefin drag reduction agent suspension. A solvent comprises 15-45 percent of poly alpha olefin particles, 5-15 percent of long carbon chain amide, 50-60 percent of solvent, 1-5 percent of surface active agent, 0.1-2 percent of thickening agent, and 10-20 percent of suspending agent and stabilizing agent according to the proportion when the total weight of the solvent is 100, and long carbon chain amide powder particles are fully contacted in the solvent containing at least one surface active agent and emulsified at a certain temperature, and the alpha-olefin drag reduction agent suspension is obtained by adding ground poly alpha-olefin particles with super high molecular weight and at least one of a surface active agent, a suspending agent, a stabilizing agent and a dispersing agent into the emulsified solvent. The suspension prepared by the method has long storage cycle, high content of poly alpha-olefin particles, large drag reduction rate, and low transportation and preparation costs.

The invention provides a preparation method of a metal-doped zinc oxide liquid-phase homogenous-dispersed body. The preparation method is characterized in that zinc salt is used as a reaction source and metal salt is used as a doping source in an alcohol phase system, and on that basis, the metal-doped zinc oxide nano-particle dispersing liquid is prepared by adoptinga low-temperature solution method under an alkaline condition; then a trace of surfactant is added to further improve the dispersing stability and the conductivity. The liquid-phase homogenous-dispersed body is characterized in that the metal-doped zinc oxide particles are wrapped with the surfactant layer, and the one-dimensional size is 10-20nm; the nano-particles are uniformly dispersed in the liquid-phase medium; the concentration of the metal-doped zinc oxide particles in the dispersed body is 10-20mg / mL. The preparation temperature of the metal-doped zinc oxide dispersed body is not beyond 80 DEG C; the preparation process is simple, the energy is saved and the environment is protected; the product is high in stability, high in conductivity, and free from precipitation after standing for more than 3 months; the obtained nanometer material is high in conductivity and has a good application prospect in the field of photoelectric appliance such as the solar cell field.

The invention discloses a silicon carbide ceramic preform, an aluminum-based silicon carbide ceramic material, and a preparation method of the silicon carbide ceramic preform, and relates to the technical fields of materials and preparation thereof, and aims at solving the technical problems that the silicon carbide ceramic preform prepared by an existing preparation process is low in strength, uneven in structure, and low in volume fraction of silicon carbide. According to the main technical scheme, the preparation method comprises the following steps: mixing raw materials for preparing the silicon carbide ceramic preform evenly, so as to prepare a raw material slurry, wherein the raw materials for preparing the silicon carbide ceramic preform comprise silicon carbide, a dispersing agent, an organic monomer and water; introducing an initiator into the raw material slurry, and mixing evenly, so as to obtain ceramic slurry; carrying vacuum degassing treatment, injection molding and demolding drying on the ceramic slurry, so as to obtain a ceramic biscuit; and sintering the ceramic biscuit at 800-1200 DEG C, so as to obtain the silicon carbide ceramic preform. The preparation method is mainly used for preparing the silicon carbide ceramic preform with high strength and uniform structure, so as to prepare the aluminum-based silicon carbide ceramic material with high performance.

The invention provides polytetrafluoroethylene-modified polyethylene wax powder, which has a core-shell structure, wherein the core comprises polyethylene wax powder with an average particle size smaller than 30 mu m and the shell comprises polytetrafluoroethylene with an average particle size of 1-1000 nm. The polytetrafluoroethylene-modified polyethylene wax powder provided by the invention hasthe core-shell structure, and polytetrafluoroethylene is wrapped on the surface of the polyethylene wax powder in a form of very small nanoparticles. Because of low density and easy dispersion of thepolyethylene wax powder, polytetrafluoroethylene is well dispersed by virtue of the excellent dispersion performance of the polyethylene wax powder and very stably suspends in a solution system without settlement.

The invention relates to an expanding agent, a post-tensioning prestressed concrete porelike grouting agent and a grouting material. The expanding agent comprises a nitrogen expanding agent, gypsum and magnesium oxide at a mass ratio of (0.3-0.6):30:(3-15). The post-tensioning prestressed concrete porelike grouting agent comprises the following components in parts by mass: 5-12 parts of water reducing agent, 0.3-0.7 parts of stabilizing agent, 18-60 parts of mineral admixture, 0-15 parts of early strength agent, and 35-50 parts of expanding agent. The invention further provides the post-tensioning prestressed concrete grouting material which comprises portland cement, water and the grouting agent, wherein the mass ratio of the grouting agent to the portland cement is (10-20):(80-90), and a range of the water-binder ratio is 0.26-0.28. In a grouting material slurry hardening process, a continuous and stable expanding effect is generated, so that the grouting material can be tightly bonded with prestressed reinforcements and structural concrete, and the effective transmission of a stress is ensured.

The invention relates to a low-temperature early strong bridge support anchoring material which is prepared from the following components in percentage by weight: 38-45 percent of aluminum sulfate cement, 2-6 percent of expanding agent, 1-5 percent of superfine silica fume, 40-50 percent of quartz sand, 0.5-0.8 percent of water reducing agent, 0.5-1 percent of reinforcing agent, 0.1-0.4 percent of thickening time control agent, 0.02-0.06 percent of defoaming agent, 2-5 percent of anti-freezing agent and 0.04-0.08 percent of fluid volume stabilizing agent. All the components are uniformly mixed, mixed with water and stirred, wherein the ratio of material to water is 0.13-0.16; and after being uniformly stirred, the mixture is used for support grouting anchoring. The low-temperature early strong bridge support anchoring material is suitable for rapid construction of bridge support anchoring under the low-temperature condition, and has the characteristics of high fluidity, super easy strong high strength, no shrinkage, good anti-freezing effect and the like.

The invention discloses a high-reliability low-temperature lead-free solder paste and a preparation method thereof. The high-reliability low-temperature lead-free solder paste is prepared by mixing solder powder and flux according to a weight ratio of 88.5-90.0:10-11.5. The solder powder is composed of, by weight, 48-56% of Sn, 1.0-1.4% of Ag, 0.1-0.15% of rare earth Ge / Nd and the balance In. In the selected raw materials, solder powder alloy is low in melting point, excellent in mechanical property and thermal fatigue resistance and capable of meeting high reliability in use of the solder paste in a low-temperature environment; the flux is low in boiling point and capable of meeting the requirement that other components of the flux are dissolved by a solvent in a soldering process, and the flux is basically volatilized to reduce after-soldering residues after soldering is finished; an active agent with a low melting point can guarantee greatest functions in the soldering process to realize removal of an oxide film of a substrate, reduction of surface tension of soldering flux and promotion of moistening of the solder paste and the substrate; a thixotropic agent can guarantee freeness of sedimentation and layering in a solder paste storage process and continuity and smoothness in a printing process.

The invention discloses an anti-reverse membrane electrode for a fuel cell and a preparation method of the anti-reverse membrane electrode. The anti-antipole membrane electrode is prepared by mixing and coating turbid liquid of an anti-antipole active substance and catalyst ink and then drying, the turbid liquid of the anti-antipole active substance consists of the anti-antipole active substance and a solvent, wherein the pH value of the turbid liquid of the anti-antipole active substance is 6-7, the anti-antipole active substance is a nano-material catalyst containing an iridium or rutheniumsimple substance, an iridium or ruthenium simple substance oxide or an iridium or ruthenium simple substance hydroxide, and the mass fraction of the anti-antipole active substance in the anti-antipolemembrane electrode is 1%-15%. According to the invention, the anti-antipole capability of the membrane electrode is ensured, the addition amount of noble metal active substances can be further reduced, the cost is reduced, the anti-antipole active substances can be added together with other additives in the membrane electrode in the preparation process, the coating process is not additionally added, and the preparation method is suitable for preparing the large-area membrane electrode.

The invention belongs to the field of biotechnologies, and particularly relates to a preparation method of immunomagnetic nanoparticles. The preparation method comprises the following steps: coating the surfaces of ferroferric oxide magnetic nanoparticles with silicate ester to lower the surface activation energy of the ferroferric oxide magnetic nanoparticles, so that the stability of the magnetic nanoparticles is enhanced greatly, and the concentration coating thickness of the silicate ester can be adjusted at the same time; then, modifying the surfaces of the magnetic nanoparticles with carboxyl, wherein in the whole modification process, reaction conditions are mild, an inert gas environment, severe conditions such as high temperatures and high pressures, complex devices and large-sized equipment are not needed, raw materials are readily available, a large quantity of organic solvents are not needed, and meanwhile the synthesized magnetic nanoparticles are adjustable in particle diameters; and activating the carboxyl-modified magnetic nanoparticles by an activating agent, and covalently binding the activated magnetic nanoparticles with free amino groups of bioactive molecules through amido bonds, wherein the covalent binding is firmer than non-covalent binding of an imine structure in an aldehyde-amine condensation reaction and colloidal gold.

The invention discloses rapid ground leveling mortar. The rapid ground leveling mortar is prepared from the following raw materials in parts by weight: 200 to 350 parts of cementing material, 500 to 600 parts of aggregate, 100 to 200 parts of filler, 0.5 to 1.0 part of water reducing agent, 0.3 to 1.0 part of water retaining agent, 0 to 20 parts of latex powder, 0 to 1 part of retarder, 0 to 1 part of early strength agent and 0 to 1 part of anti-foaming agent. The rapid ground leveling mortar has a high levelling property and a high self-healing property, is free from sedimentation and bleeding, has high bonding strength with a base layer, is easy and convenient for ground construction, and can be used for realizing mechanical large-scale rapid construction; meanwhile, accurate ground leveling of 10 to 60mm in thickness can be realized, the single construction thickness is larger than 10mm, and fracturing and hollowing are avoided while the maximum single construction thickness is up to 60mm; people can tread on the ground 2 to 4 hours after construction, the strength can be up to the final strength of ordinary M15 ground mortar after 24 hours, a construction flow is realized, high construction efficiency and low labor strength are achieved, and the ground leveling construction period can be greatly shortened.

The invention discloses a modification processing method by utilizing powdered coal clinker to carry out a soft base soil body; after the waste calcium-containing powdered coal clinker and water glass are mixed according to volume ratio of 35:1-45:1 by an excavator, and then the mixture is mixed with the soft base soil body by stirring according to the 1:1-1:2 volume ratio, the mixed soil body is backfilled, and the modified soil body is solidified by grinding and standing; the mixed soil body stands still for 60-84 hours and then is solidified; the soft base soil body including sludge in sea, sludge in lakes or sludge in rivers, the particle size of the calcium-containing powdered coal clinker is 0.2-8mm. the calcium oxide weight percentage content in the calcium-containing powdered coal clinker is 15-35 percent, and the flowing calcium weight percentage content is 0.2-0.4 percent; by adopting the processing method, the construction cost is low, the construction period is short, the problem of the waste residue treatment is not only solved, but also the construction cost of the soft foundation treatment in the engineering is reduced, circulating economic utilization is realized and the economic benefit is remarkable.

The invention discloses a pier type arch linkage type goaf treatment method. A bracing strength of a pier column is obtained mainly through data analysis of a key layer, then a grouting hole is formedin a bottom plate of a goaf from the ground surface, the grouting hole is filled intermittently by using a pipe lifting method to form the pier till the pier is connected with the top of the key layer, and after grouting filling is completed, residual grouting holes are filled and sealed. A pier type arch linkage structure is formed by utilizing mutual cooperation of the pier formed after grouting filling aggregate is solidified and a caving top plate covering the goaf, and the stability of the top plate of the goaf is maintained.

The invention provides a preparation method of an adsorbent for industrial wastewater treatment. The preparation method particularly includes steps: (1), preparing modified composite powder; (2), preparing a composite crosslinking adsorbent; (3), preparing a magnetic composite crosslinking adsorbent. Kaolin and sepiolite are composited to serve as a basic adsorbent raw material, and the characteristics that kaolin and sepiolite have high specific surface area, complex pore structure and excellent adsorption site are fully combined, so that adsorption activity when a single raw material is used as an adsorbent is improved greatly. In addition, a quaternary ammonium salt surfactant and cetyl trimethyl ammonium bromide are adopted to modify kaolin and sepiolite, so that alternating performance and adsorption performance of the adsorbent are improved; by introducing polyvinyl alcohol and chitosan for crosslinking reaction, stability and strength of the adsorbent are improved, and the obtained adsorbent can efficiently adsorb pollutants like heavy metal ions, dye and petrochemical pollutants in industrial wastewater.

The invention provides an avian coccidiosis vaccine stabilizer for spray or water drinking immunization, and a preparation method and an application thereof. The stabilizer mainly comprises 10-35% ofedible gum, 2-5% of sodium alginate, 3-12% of a water stable compound sodium polyacrylate, 0.1-0.5% of a food coloring, 0.1-0.5% of a sweetener, 2-8% of ginseng leaf extract and 39-82.8% of dextrin. The prepared stabilizer is suitable for being diluted during water drinking immunization or spray immunization with an avian coccidiosis vaccine, can make the chicken coccidian oocysts form a uniformlydispersed system in water and keep for 8 h or more without settling, and improves the avian coccidiosis immunization effect.

The invention discloses a multifunctional lithium-sulfur battery diaphragm which is characterized by comprising a basic diaphragm and a coating layer, wherein the coating layer comprises graphene oxide and a main body material, and the main body material is one of boron nitride, aluminum carbonitride or molybdenum disulfide. The invention further discloses a preparation method and application of the multifunctional lithium-sulfur battery diaphragm. According to the multifunctional lithium-sulfur battery diaphragm disclosed by the invention, the graphene oxide is adopted to induce the main bodymaterial, so that the dispersity problem of the nano materials is solved, the two nano materials are compounded in order, shuttling of polysulfide is more effectively inhibited, and the mechanical strength and heat resistance of the diaphragm are synergistically enhanced. According to the preparation method of the diaphragm, a solvent evaporation induced self-assembly means is adopted, so that ordered compounding of two 2D nano materials is realized, the coating thickness can be flexibly controlled, and large-scale production is realized.

The present invention discloses a post-tensioning pre-stress duct grout material for a low temperature condition, and belongs to the technical field of building materials. The post-tensioning pre-stress duct grout material comprises a coagulation accelerating component, an anti-freezing component, a polycarboxylic acid water reducing agent, an expanding agent, an antifoaming agent, polyacrylamide, a plasticizer and a mineral admixture, wherein the anti-freezing component is a mixture obtained by compounding a nitrite and a sulfate according to a weight ratio of 0.5-2.0:0.5-1.0. The post-tensioning pre-stress duct grout material has characteristics of significant low-temperature resistance effect, controllable setting time, appropriate initial setting time, appropriate final setting time, high compressive strength, high bending strength, zero free bleeding rate, stable performance, and easy and convenient use, and can be widely used in highway bridge and culvert construction.

The invention provides a heat-conducting pouring sealant and a preparation method thereof. The heat-conducting pouring sealant is composed of an agent A and an agent B, wherein the agent A comprises,by weight, 100 parts of base glue, 10 to 20 parts of a heat-conducting filling material, 5 to 7 parts of a diluent, 50 to 60 parts of a filler and 1 to 2 parts of a brightening agent, and the heat-conducting filling material is alumina having undergone surface treatment by organosilane and / or titanate; and the agent B comprises, by weight, 7 to 23 parts of a cross-linking agent, 10 to 20 parts ofa diluent, 0.5 to 4 parts of a coupling agent and 0.05 to 0.06 part of a catalyst. According to the invention, since the alumina having undergone surface treatment by organosilane and / or titanate, thepouring sealant has good thermal conductivity; the heat-conducting filling material and the filler are cooperated with each other, and the synergism of the two substance can reinforce the heat conduction effect of the pouring sealant; and the pouring sealant provided by the invention is not prone to settlement and has good stability and mechanical properties.

The invention provides anode slurry as well as a preparation method and use thereof, and relates to the field of battery slurry. The preparation method of the anode slurry comprises the following steps: (a) firstly, mixing a first binder and a dispersing agent with 60-70% of water to obtain a glue solution; (b) mixing the glue solution and an anode active material, and then mixing the obtained mixture with 20-25% of water to obtain a slurry intermediate product; (c) mixing the obtained slurry intermediate product with a second binder and the remaining amount of water to obtain the anode slurry; the total amount of water used in the steps (a), (b) and (c) is a formula amount. After the method is adopted, the technical problems that in the existing pulping process, mixing time is long, the production efficiency is low, and the prepared slurry is unstable in performance, easy to settle and poorer in dispersion effect can be solved; the anode slurry which is good in stability, not liable to settle and good in dispersion effect, and has high adhesion to a negative electrode current collector is obtained while the production efficiency is increased.

The invention discloses a light, thin and skin-fitting efficient sunscreen CC (color control) cream composition, comprising aluminum starch octenylsuccinate and caprylyl dimethicone ethoxy glucoside; the aluminum starch octenylsuccinate can absorb redundant sebum of skin, control shinning and enables the skin to be matted, and can also improve the greasy feeling in using efficient sunscreen cream; the caprylyl dimethicone ethoxy glucoside enables the cream to be soft, cool, and agreeably smooth, and enables the cream to be excellent in spreadability; the two components are added in a cosmetic product at a suitable ratio, and the cosmetic product is light, thin, skin-fitting, non-greasy, and easy to apply with rare accumulation of powder even when it contains much organic sunscreen and inorganic ultraviolet blocking agent.

The invention discloses polyolefin lithium battery diaphragm coating slurry, which is prepared by a coating material, a binder and deionized water, wherein the coating material is composed of one or more of graphene coated Al2O3 powder, carbon nanotubes, graphene and graphite according to any proportion; the binder is composed of one or two of sodium alginate, carboxymethylcellulose sodium, styrene butadiene rubber and polyvinylidene fluoride according to any proportion; the mass ratio of the coating material and the binder is 10:(0.01-1), the balance is the deionized water, and the mass fraction of the coating material in the polyolefin lithium battery diaphragm coating slurry is 0.1-30%. The invention further discloses a method of coating a polyolefin lithium battery diaphragm by using the polyolefin lithium battery diaphragm coating slurry. The coating slurry takes water as a solvent, and has the advantages of low cost, environment friendliness, controllable viscosity of the coatingslurry and good wettability and dispersion of the coating slurry. The method of the invention is simple in preparation process, low in cost and suitable for large-scale production.

The invention discloses a method for preparing a drag reducer from modified MoS2, and relates to the technical field of petroleum development. The method comprises the following steps: (1) preparationof the modified MoS2; (2) preparation of a modified MoS2 suspension; (3) preparation of a polymer; and (4) preparation of the drag reducer. The drag reducer prepared in the invention has a good thermal stability, so the product can be stored at room temperature for 30 d without flocculation and sedimentation; the product has good water-soluble dissolving ability, so the product can be fully dissolved in different water solutions, can be still uniformly dispersed after being subjected to gel breaking at a high temperature of 130 DEG C, and breaks through the technical problem of poor thermal stability of the drag reducer due to too high temperature; and the product has the advantages of low concentration and high efficiency, so the order of magnitude of the concentration of the drag reducer is reduced.

The invention belongs to a rib-line-shaped prestressed concrete pipe pile. The rib-line-shaped prestressed concrete pipe pile is composed of a pile body, wherein protruding rib lines or protruding movable outer expanding wings are arranged on the peripheral wall of the pile body. The rib lines are rectangular strip-shaped bodies which are spirally distributed at intervals. The rib lines are equal-height rib bodies which are arranged at intervals. The rib lines are crescent rib bodies which are arranged at intervals, and the crescent rib bodies are obliquely arranged and are arranged independent of one another. Prestressed reinforcement formworks are arranged in the pile body at intervals, and the pile body is round or square. The friction coefficient of the concrete pipe pile and a foundation soil layer can be substantially increased, and the pipe pile has the advantages that the pipe pile is high in bearing and supporting force and free of sedimentation, labor and effort are saved in the construction process, and the service life of a building is long.

The invention discloses a silicon carbide ceramic prefabricated body, an aluminum-based silicon carbide ceramic material and a preparation method thereof, relates to the technical field of materials and preparation thereof, and solves the problem of low strength and poor structure of the silicon carbide ceramic prefabricated body prepared by the existing preparation technology. Uniform and low volume fraction of silicon carbide technical problems. The main technical scheme of the present invention is: uniformly mixing the raw materials for preparing silicon carbide ceramic preforms to obtain raw material slurry; the raw materials for preparing silicon carbide ceramic preforms include silicon carbide, dispersant, organic monomer and water; Add it to the raw material slurry, and mix it evenly to obtain a ceramic slurry; the ceramic slurry is subjected to vacuum degassing treatment, injection molding, demolding and drying in sequence to obtain a ceramic green body; Sintering treatment to obtain a silicon carbide ceramic preform. The invention is mainly used for preparing a high-strength and uniformly structured silicon carbide ceramic prefabricated body, and further preparing a high-performance aluminum-based silicon carbide ceramic material.