250results about How to "Overcome strength" patented technology

The invention relates to a high efficiency water treatment flocculant for drinking water and water treatment comprising a metal cation flocculant which is characterized in that the high efficiency water treatment flocculant also comprises a high efficiency adsorption component and an assistant medicament to be remixed, inwhich the weight ratio is: the high efficiency adsorption component 5-15%, the metal cation flocculant 50-85%, the assistant medicament 5-15%. The obvious characteristics of the invention are that each component can play the advantages of high intensity of the flocs of the inorganic flocculant and large flocs of the polymeric flocculant, overcomes the drawback of small flocs of the inorganic flocculant and low intensity of the flocs of the organic flocculant. The existence of the high adsorption component plays the action of adsorption of the organic compounds and heavy metal ion which are difficult to flocculat and precipitate, also plays the role of aid-coagulation, decoloration and deflavour. Thus the flocculant of the invention has advantages of good coagulation effect, large alum blossom, rapid settling velocity, good effluent quality and few dosage or the like.

The invention relates to an aerogel composite material, in particular to a glass fiber reinforced silicon dioxide aerogel composite material and a preparation method thereof. The excellent properties of aerogel are maintained, the mechanical properties of the aerogel are reinforced, and the glass fiber reinforced silicon dioxide aerogel composite material has good integrity and certain strength. The glass fiber reinforced silicon dioxide aerogel composite material is prepared by compounding glass fiber and silicon dioxide aerogel, wherein the glass fiber is a reinforcement, and the content ofthe glass fiber accounts for 1-15% total mass of a sample; the silicon dioxide aerogel is a matrix, tetraethoxysilane is a silicon source material, and methyltrimethoxysilane or methyltriethoxysilaneis used as a silicon source co-precursor. The preparation method comprises the following steps of: firstly, pretreating the glass fiber; then, preparing glass fiber reinforced silicon dioxide composite wet gel; and finally, aging, secondarily modifying and drying the silicon dioxide composite wet gel.

The invention relates to a high-performance halogen-free flame retardant ABS modified resin and a preparation method thereof. The resin comprises the following components with the content (in parts by weight): 100 ABS resin, 4-30 polyamide, 5-25 phosphate fire retardant, 0.1-0.5 anti-drippage agent, 5-10 toughening agent, 1-5 nano filler, 1-5 compatilizer, 0.2-1 antioxidant, 0.1-0.5 light stabilizer and 1-5 processing agent. Compared with the prior art, the invention has reasonable technique, and overcomes the defects of poor flame retardant property and low impact strength of the existing halogen-free flame retardant ABS; and the invention adopts a novel high-efficiency halogen-free flame retardant compounding synergism technology, a novel polyamide coal-forming agent, the high-efficiency synergism between organic and inorganic fire retardants, and the master batch method processing technique, thus endowing the resin with high fire resistance on the basis of improving the original good performances (especially the impact performance) of the ABS resin, and having wide application prospect.

The invention belongs to the technical field of design, research and development of environment-friendly chemical materials and specifically relates to an aldehyde-free vegetable protein-based wood adhesive as well as preparation and application methods thereof. The aldehyde-free vegetable protein-based wood adhesive is prepared from the following components in parts by mass: 100 parts of water, 20-40 parts of vegetable protein, 0.1-5 parts of modifier, 20-40 parts of cross-linking agent, 2-20 parts of curing agent, 1-5 parts of packing and 0-3 parts of additive. The finished product is formed by virtue of vegetation protein dissolution, a cross-linking reaction and a curing reaction. The adhesive is mainly applied to a wood material in such a manner of roll coating, scraper coating, curtain coating or spraying, and then a composite wood artificial board can be obtained by virtue of aging, cold pressing and hot pressing.

A multi-operating mode frame type portable landslide testing device for a geomechanical model belongs to the field of geological hazard model test. The testing device comprises a frame-beam-type testing bed, a rainfall simulator, a water level regulator and a self-weight horizontal loading mechanism, wherein the frame-beam-type testing bed mainly comprises a cuboid framework, a front panel, a rear panel and a base plate; the rainfall simulator is arranged at the top of the frame-beam-type testing bed and comprises a plurality of spraying pipes and nozzles on the spraying pipes and is used for simulating rainfall in the frame-beam-type testing bed; the water level regulator comprises a left-side trough and a right-side trough respectively formed on the left and the right sides of the frame-beam-type testing bed, and a plurality of drainage holes are respectively formed on the right panel of the left-side trough and the left panel of the right-side trough and used for changing the water levels of water level simulation libraries in the left-side trough and the right-side trough; and the self-weight horizontal loading mechanism is arranged above the right-side trough and used for bearing weights, so as to exert horizontal load to the landslide model in the frame-beam-type testing bed.

The invention relates to carburizing alloy steel, and a preparation method thereof. The alloy of the carburizing alloy steel comprises, by mass, 0.15%-0.25% of C, less than or equal to 0.30% of Si, 0.30%-1.20% of Mn, less than or equal to 0.015% of P, less than or equal to 0.010% of S, 0.30%-1.50% of Cr, 2.80%-3.80% of Ni, 0.30%-1.00% of Mo, 0.01%-0.08% of Al, at least one selected from 0.05%-0.15% of V and 0.025-0.10% of Nb, and the balance being Fe and inevitable impurities. A mass percentage of V, Nb and Al meets an equation of V+Nb+Al <= 0.30%. The carburizing alloy steel provided by the invention has good anti-fatigue performance, excellent comprehensive properties, good hardenability, high yield ratio, extremely small internal oxidation and the characteristic of resisting grain growth at a high temperature, and is suitable for manufacturing heavy-duty gears.

The invention relates to a method for preparing black zirconia ceramics at the low temperature and belongs to the technical field of the preparation of high-temperature structural material. The method respectively uses a homogeneous precipitation method for synthesizing a nanometer coloring agent, and a coprecipitation method for synthesizing nanometer zirconia powder, and adopts Fe-Co-Ni-Mn as a coloring agent. The zirconia powder is not added with any sintering additive, only added with small amount of coloring agent and sintered at the temperature of 1150-1350 DEG C, thus obtaining the black zirconia ceramics with excellent performance and bright color. As the homogeneous precipitation method is adopted for synthesizing coloring agent powder, the monodisperse nanometer particles with uniform powder granules, narrow size distribution and high purity are obtained so that the coloring agent easily colors the particles. As the coprecipitation method is used for synthesizing zirconia powder, nanometer particles with small granularity, big superficial area and high activity are obtained, and can reduce the temperature of the solid-phase reaction, greatly reduce the sintering temperature and solve the problem that the black coloring agent oxide decomposes and volatiles at the high temperature. Simultaneously the method adopts the Fe-Co-Ni-Mn as the coloring agent, thus avoiding the poisonous function of Cr on the human body.

The invention relates to a halogen-free intumescent flame-retardant polypropylene/ethylene vinyl acetate cable material which is characterized by comprising the following components by weight part: 20-40 parts of polypropylene, 60-80 parts of ethylene vinyl acetate, 45-65 parts of compound flame retardant, 5-15 parts of grafting agent, 1.0-2.0 parts of antioxidizer, 1.0-2.0 parts of ultraviolet absorbent and 1.0-3.0 of processing aid. With the advantages of favorable flexibility, high breakage extensibility, favorable tensile strength, excellent electrical insulating property and good flame retardant, the material favorably meets the requirements on the burning property, the mechanical property and the heat property of the cable material and is mainly used as the outer coating material ofcables.

The invention provides a blow molding type halogen-free flame-retardant polypropylene material, which comprises the following components in part by weight: 100 parts of polypropylene, 40 to 85 parts of phosphorus-nitrogen series expanded halogen-free composite flame retardant, 3 to 20 parts of resin modifier, 0.05 to 0.5 part of pigment, 0.4 to 2.0 parts of antioxidant, 0.3 to 2.0 parts of ultraviolet absorbent, 0.3 to 2.0 parts of light stabilizer, and 1.0 to 3.0 parts of other processing aids. The material has good tensile strength, high impact strength, good low-temperature performance and excellent flame-retardant performance, and is particularly suitable for hollow blow molding type small and large components of automobiles, furniture and the like.

The invention discloses a method for preparing graphene oxide modified composite phase-change microcapsules. The method specifically comprises the following steps: preparing a graphene oxide solid from graphite powder, concentrated sulfuric acid, sodium nitrate, potassium permanganate and deionized water; mixing the obtained graphene oxide solid with absolute ethyl alcohol and a silane coupling agent, and performing a reaction so as to obtain a double-bond modified functional graphene oxide solid; uniformly mixing the obtained functional graphene oxide solid with a phase-change material, a reaction monomer, a cross-linking agent, a reactive emulsifier and deionized water, and performing ultrasonic dispersion so as to form an oil-in-water type pre-emulsion; and putting the obtained oil-in-water type pre-emulsion into a hot water bath, continuously stirring, further adding an initiator solution, and performing a heat-preservation reaction, thereby obtaining the graphene oxide modified composite phase-change microcapsules. By adopting the method disclosed by the invention, composite phase-change microcapsules which are high in encapsulation efficiency, stable in property, good in heat conductivity, appropriate in phase-change temperature and relatively high in phase-change latent heat enthalpy can be prepared.

The invention discloses gelatin hydrogel, which is of a water molecule filled porous three-network structure, wherein the first network is a cross-linked network between the modified gelatin; the second network is a cross-linked network between polyethylene glycol diacrylate; the third network is a cross-linked network between the modified gelatin and the polyethylene glycol diacrylate. The invention also discloses a preparation method of the gelatin hydrogel. By using an ultraviolet light catalytic crosslinking technology, the modified gelatin is cross-linked with the polyethylene glycol diacrylate; the gelatin hydrogel is obtained through preparation. The gelatin hydrogel provided by the invention has the advantages that the elasticity modulus and the degrading performance of the support frame can be regulated and controlled through changing the modification degree of the modified gelatin and the addition quantity of the polyethylene glycol diacrylate; the structure regulation can be better performed according to the requirements of different tissue engineering support frames; the proper space and the intensity can be provided for the growth of the cells; the ordered space structure is formed.

The invention discloses a method for preparing high-strength double-network nano silicon dioxide composite hydrogel. The method comprises the following steps: preparing a nano SiO2 water solution by using cooled boiled distilled water, dissolving sodium alginate, acrylamide, a cross-linking agent, an initiator and a catalyst into the SiO2 aqueous solution, rapidly transferring the prepared solution to a glass mold, putting the sealed mold into an environment of 45-55 DEG C, and performing heat-preservation reaction for 2-6 hours; taking out the hydrogel formed inside the mold, soaking the hydrogel in a CaC12 aqueous solution with the concentration of 0.1-1M for 2-6 hours, and taking out the product, thereby obtaining the high-strength double-network nano silicon dioxide composite hydrogel. Compared with the conventional hydrogel, the composite hydrogel disclosed by the invention is relatively high in strength and elongation, and the application demands in human body cartilage repairing, tissue engineering and the like can be met.

This invention relates to a preparation method for special steel woven filaments for communication cable shield layers including rough drawing, plating, mid-drawing, fine-drawing and annealing of copper-wrapped steel filaments with the mechanical performance approaching to copper wires, the extension rate of which reaches to 20% and the tensile strength reaches to that of copper wires, so it will not be broken when used in weaving cable shield layers and the product will not be hard and keep fine flexibility.

The invention discloses a polypropylene thermoplastic elastomer for an automobile safety airbag cover board; the polypropylene thermoplastic elastomer comprises 21-48% of high melt strength polypropylene (HMSPP), 10-50% of olefin polymer, 10-40% of styrenic thermoplastic elastomer and 2-15% of compatilizer by weight; a preparation method of the polypropylene thermoplastic elastomer comprises the steps as follows: adding the above components to a double-screw extruder respectively according to a proportion, melting, mixing and dispersing, setting a temperature of each section of the extruder at 230-265 DEG C, extruding and granulating to obtain the product finally. As the high melt strength polypropylene (HMSPP) is adopted as a matrix resin of the thermoplastic elastomer, and the olefin polymer and the styrenic thermoplastic elastomer are used for toughening synergistically, the prepared elastomer material has excellent high temperature and low temperature bursting properties and can meet the requirements that the automobile safety airbag cover board cannot be deformed to fly out and torn excessively during high temperature blasting (85 DEG C.) and does not generate fragments during low temperature blasting (-35 DEG C.); and therefore, the polypropylene thermoplastic elastomer can replace the conventional thermoplastic polyolefin (TPO) to apply to different types of automobile safety airbag cover boards.

The invention discloses vegetable gum based on modified starch. The vegetable gum is prepared from the following raw materials in parts by weight, 40-90 parts of modified starch, 3-30 parts of gelatinizing agents, 2-20 parts of plasticizers, 2-20 parts of polymer, 2-20 parts of plant fibers, 10-50 parts of deionized water and 1-15 parts of cross-linking agents. The raw materials are mixed and subjected to reaction at the temperature ranging from 20 DEG C to 120 DEG C for 10-200 minutes, and the vegetable gum is prepared by kneading, extruding and cutting procedures. The starch and the polymer or macro-molecules are compounded and mixed or grafted and copolymerized, the vegetable gum overcomes the shortcomings of poor plasticity, low tensile strength and frangibility of original starch and difficulty in degradation and non-renewable performance of the macro-molecules, the vegetable gum is degradable, renewable, low in cost, good in plasticity, stable on heat and resistant to aging, and a preparation method of the vegetable gum controls extrusion temperature, screw rotation speed, cutter rotation speed and granule cooling, so that granules cannot be adhered and are uniform in size and good in plasticity. The vegetable gum is applied to related products such as degradable plastics, capsules and food and drug packing materials.

The invention discloses a modified high-speed steel roller and a preparation method thereof. The modified high-speed steel roller is formed by adopting a centrifugal composite casting method and has a roller outer layer of high-speed steel and a roller inner layer of ductile iron or high-strength cast iron. The preparation method comprises the following steps of: forming the roller outer layer on a centrifugal casting machine; then, filling a static roller core with melted iron; and casting into a high-speed steel composite roller. The roller outer layer of the high-speed steel roller is prepared from raw materials in percentage by weight: 60-65 percent of M2 high-speed waste steel (W6Mo5Cr4V2), 1.0-1.4 percent of metal aluminum, 5.0-5.5 percent of boron iron, 9.2-9.4 percent of carbon ferrochrome iron, 0.2-0.4 percent of titanium iron, 1.0-1.2 percent of nickel-magnesium alloy and 18-23 percent of waste steel Q235. The roller can be produced by utilizing an electric furnace, has high hardness, simple and convenient process, low production cost and favorable wear resistance without adding noble iron alloy or quenching treatment and can have favorable economic benefits by popularization and use.

The invention relates to a low-pressure injection molding encapsulation method of a polymer battery and a low-pressure injection molding polymer battery. The battery of the invention comprises a battery protecting board, a battery cell and an adhesive wherein the battery protecting board is welded with the positive pole and the negative pole of the battery cell; the adhesive frame is composed of a front side, a back side, a left side and a right side; the height of the adhesive frame is equivalent to the thickness of the battery cell; the battery protecting board is clamped on one side, which is provided with an electrode hole, of the adhesive frame; a plurality of convex ribs are arranged on the inner sides of the other three sides of the adhesive frame; the convex ribs abut against the corresponding side of the battery cell, so a gap is formed between the battery cell and the adhesive frame; and hot melt adhesive molded by low-pressure injection molding is filled in the residual space in the adhesive frame. The invention has the advantages of simple structure, low manufacturing cost, good mechanical property, low height of the battery, precise dimension and high realizability.

The invention relates to a preparation method for a ceramic coating separator material used to lithium ion batteries. The preparation method comprises steps of preparation of a ceramic slurry, separator pretreatment, precise coating, drying and the like. The prepared product has the characteristics that the ceramic coating is compact, uniformly and firm in adhesion and the separator is small in thermal shrinkage, and the prepared product has obvious effect on improving safety performance of the lithium ion battery and prolonging battery service life.

A light-weight foamed wall slab is prepared from magnesium oxide (1070 wt. portions), magnesium chluride (60-70), water (20-50), stabilizer (5-26), short fibres (2-15), modifier (1.65-9), foaming agent (0.8-8), and water-resisting agent (0.15-1) through mixing while stirring, foaming and solidifying. Its advantages are high effect, low cost of modifier, light dead weight, high strength, and low cost.

The invention relates to a method for manufacturing fast-growing wood sheet, in particular to a manufacturing method for modifying a fast-growing poplar board, belonging to the technical field of sheet manufacture. The invention has the advantages of small internal stress of a compressed carbonized poplar board manufactured by the method and good stability of the size of the board, thereby ensuring the quality of a compressed carbonized wood. The invention overcomes the defects of a fast-growing poplar sheet, such as low density, low hardness, low strength, easy corrosion, difficult direct use and the like, improves the density of the sheet by carrying out compression and densification for the poplar sheet, carries out carbonization on the compressed poplar sheet on the condition of pressurization, and eliminates the compression stress inside the sheet so as to prevent springback of the sheet and improve the size stability, density and strength. The poplar board manufactured by the method can be directly used as a sheet. The compressed carbonized poplar board can be partially or entirely used to replace high-quality precious wood, thereby relieving the contradiction between continuously reduced precious wood resources and increasing demand for wood.

The invention discloses a miniaturized LED integrated array device and a preparation method thereof, and relates to the technical field of luminescence display. With the device and method, the problem of limited use due to bending incapability of a conventional planar LED micro-display device can be solved. The working process of the miniaturized LED integrated array device is as follows: current is injected from an upper electrode and flows out of a lower electrode, so that an electric field is formed in the device, and positive and negative carriers emit light at a luminescent layer in a composite manner; a part of the light is oriented upwards, passes through an euphotic layer and comes out of a micro-lens; and a part of the light is oriented downwards, reaches a reflection layer, is reflected by the reflection layer, passes through the luminescent layer and the euphotic layer, and then comes out of the micro-lens. The luminescent device is based on the luminescence principle of composite luminescence of the carriers in a p-n structure and has the non-linear characteristics of the current and voltage of a diode so that the luminescent brightness also has the non-linear characteristics according to the size of the injected current. The brightness of pixel elements is controlled through a circuit so that luminescence display is realized.

An activating grinding aid for industrial waste residues is prepared from catalyst (1-8 wt.%), activating agent (30-80 wt.%), setting regulator (0-20 wt.%), grinding aid (3-12 wt.%) and carrier (3-30wt.%). Its advantages are effective use of industrial waste residues, low electric consumption of grinder, and improve cement performance.

The invention discloses an original-space detector and a detection method for beach shallow sea sediment strength. The original-space detector for the beach shallow sea sediment strength comprises a control ship and a frame device, wherein the control ship is provided with an air charging device and a vacuum generator and the frame device is provided with an injection device and a hydraulic device. An air pressure chamber on the frame device is connected with the air charging device and the vacuum generator. The air pressure chamber is a cylindrical leather bag with cross section being circular and vertically arranged. A protection cylinder is further arranged outside the leather bag. Water discharge holes are formed in the surface of the protection cylinder. The water discharge holes are in an oval shape, a V shape or a U shape. The method comprises the steps that the frame device is pulled to a target point through a ship and sinks to the seabed through self weight, strength of sediment under the seabed is detected through a hydraulic injection manner, contacting probe strength testing parameters are obtained, test points stratums are divided according to strength values of various layers of soil, names are chosen for the stratums, and bearing force and modulus on beach shallow sea foundation sole are confirmed. According to the original-space detector and the detection method for the beach shallow sea sediment strength, the defect that a large-scale research vessel can not be driven to a beach shallow sea range to conduct original-space strength detection for the seabed sediment is overcome, geological exploration can be repeatedly conducted in different seabed areas, cost is greatly reduced, and efficiency is improved.

The invention relates to a bacterial cellulose/chitosan composite medical dressing and a preparation method thereof. The bacterial cellulose/chitosan composite medical dressing comprises the following components in percentage by mass: 1-20% of bacterial cellulose and 80-99% of chitosan. The preparation method comprises the following steps: (1) boiling a bacterial cellulose membrane by using a NaOH aqueous solution, washing the bacterial cellulose membrane to a neutral state, drying the bacterial cellulose membrane in a vacuum state and grinding the bacterial cellulose membrane into a fibrid; and (2) adding the bacterial cellulose fibrid to a chitosan solution, standing and defoaming the bacterial cellulose fibrid, pouring and covering the bacterial cellulose fibrid on the surface of a chitosan medical dressing, curing the medical dressing by using a coagulating bath, and washing and drying the medical dressing so as to obtain the bacterial cellulose/chitosan composite medical dressing. According to the invention, the excellent characteristics of the chitosan medical dressing can be kept and the strength, ventilating property and hydrophilcity of the chitosan medical dressing can be improved; and the bacterial cellulose/chitosan composite medical dressing provided by the invention has the advantages of simple process and easiness for controlling the process.

The invention belongs to the technical field of keys, especially relates to a pressure induction key structure and a terminal device having the same, for solving the technical problems of relatively large space occupation, proneness to water inflow, relatively weak overall structural strength, relatively poor reliability and proneness to wrong touch of mechanical keys in the existing terminal devices. According to the pressure induction key structure provided by the invention, pressure measurement is realized by a simply supported beam type pressure induction component. When a user applies a pressure to a pressing area, the pressure is transferred onto a first fulcrum by a structural frame of the terminal device, and then the pressure is transferred onto an elastic bearing plate. Meanwhile, since a strutting piece is fixed to the structural frame of the terminal device, a reactive force of a force applied by the user acts on a second fulcrum, and the pressure is entirely concentrated on the elastic bearing plate. The elastic bearing plate generates deformation under the action of the pressure. A pressure sensor detects the deformation of the elastic bearing plate, the pressure sensor outputs a pressure signal to a pressure induction detection circuit, and the pressure signal is output to a processor after being analyzed and processed for carrying out an action.

The invention discloses a preparation method of a Ni-based catalyst modified by an aid Pt supported by multi-wall carbon nanotubes as a carrier and application. The preparation method comprises the following steps: firstly, performing acid modification on multi-wall carbon nanotubes by using nitro-sulfuric acid; by taking the multi-wall carbon nanotubes as a carrier, putting precursor salts of platinum and nickel according to the multi-wall carbon nanotubes to hexachloroplatinic acid hexahydrate and nickel nitrate hexahydrate according to a mass ratio of (5-10):(0.1-0.5):(5-10); further addingdeionized water, performing ultrasonic stirring, drying, and performing roasting and reduction, thereby finally obtaining an expected catalyst Pt-Ni/MWCNT. The catalyst prepared by using the method is low in cost, economic and effective, good in universality, good in environmental-friendliness, free of equipment corrosion and good in circulation property, and is relatively high in activity and relatively high in p-aminophenol selectivity under a relative gentle reaction condition in a process that p-aminophenol is prepared from nitrobenzene through one-step hydrogenation rearrangement, the production conditions can be improved, the production cost is reduced, and the product quality is improved.

The invention relates to a method and apparatus for detecting infrared dim small targets under a complex background, belonging to the technical field of infrared target detection. At first, the invention adopts a bilateral filtering algorithm to preprocess the single-frame infrared images in an image sequence successively, so as to reduce noise interference in the image and enhance the signal-to-noise ratio at the target; then, a single-frame infrared target detection algorithm based on block extremum is used to detect the potential candidate target sets in each preprocessed image frame by frame; based on the spatio-temporal continuity of small targets in multi-frame images, a pipeline filtering algorithm is used to identify the possible real targets in the candidate target set; finally the false alarm removal strategy is used to eliminate the false target and finally confirm the true target. Through the process, the invention overcomes the shortcomings of weakening target intensity, blurring edge, enlarging contour and the like brought by the prior infrared image processing technology, and can better retain and enhance the dim small target information, improve the target detectionrate, and reduce the missed detection rate and false alarm rate of the target.

The invention relates to a manufacture method for a composite-material launch canister of a high-altitude fire-extinguishing rocket. The launch canister comprises two metal bushings (1) and a composite-material canister body (2), and each of the two ends of the composite-material canister body (2) is hermetically connected with one metal bushing (1). The manufacture method is characterized by comprising the following steps: 1) making a cylindrical mould with smooth surface according to the structure of the launch canister inner chamber; ... 10) machining the external diameters of the canister body and a reinforcement hoop prepared in the 1)-9) steps. The prepared composite-material launch canister of the high-altitude fire-extinguishing rocket by employing the manufacture method of the invention has light weight, strong bearing capability, high-temperature flame sweep resistance, high pressure resistance, good seal performance, strong corrosion resistance, multi-time reuse and low maintenance cost.

The invention discloses Ta-contained stress corrosion-resistant Al-Zn-Mg-(Cu) alloy and a preparation method thereof. The alloy contains main alloying elements of Al-Zn-Mg or Al-Zn-Mg-Cu and microalloying elements of Zr, Ta, Fe and Si; moreover, a mass ratio of the microalloying elements satisfies the conditions that Ta is larger than or equal to 0.1Zr and less than or equal to 0.5Zr, Si is larger than or equal to 0.1Zr and less than or equal to 0.3Zr, and Fe/Si is larger than or equal to 0.7 and less than or equal to 1.5; according to the preparation method of the Ta-contained stress corrosion-resistant Al-Zn-Mg-(Cu) alloy, after an ingot metallurgy method is adopted for preparing the alloy, the alloy is subjected to homogenizing treatment, deformation treatment and solid solution waterquenching, and then artificial ageing is conducted. According to the Ta-contained stress corrosion-resistant Al-Zn-Mg-(Cu) alloy and the preparation method thereof, a multielement microalloying methodis adopted, cooperation of the multielement microalloying elements is strictly controlled to form a multielement coherent dispersed phase, recrystallization is completely inhibited, the microalloyingelements are used for improving the corrosion resistance effect of aluminium alloy passive film, high strength and good corrosion resistance performance are combined, and the problem that the strength and the corrosion resistance of existing Al-Zn-Mg-Cu ultrahigh-strength aluminium alloy cannot be achieved at the same time is solved; the preparation method of the Ta-contained stress corrosion-resistant Al-Zn-Mg-(Cu) alloy is simple in technology, and the Ta-contained stress corrosion-resistant Al-Zn-Mg-(Cu) alloy is suitable for industrialized production.

The invention discloses a process method and a process system for preparing solid fuel through biomass and sludge. The method comprises the step of mixing biomass dried raw materials with sludge dried raw materials which are aired, ground and dried to obtain the solid fuel, wherein sludge airing energy is one or the combination of any two or three of solar energy, waste gas generated by drying sludge raw materials and high-temperature fume generated by combusting the solid fuel, and sludge raw material drying energy is high-temperature and high-pressure steam generated by combusting the solid fuel. The system comprises a raw material treatment system, a molding system and a boiler system, wherein the raw material treatment system and the boiler system transfer heat energy to each other through first, second and third gas delivery pipelines. According to the method, the cost is low, the effect is good, environmental protection is realized and the solid fuel is suitable for large-scale production. The system is resource-saving and stable to operate.