493 results about "Aluminum silicate" patented technology

A fireproof magnesium oxide board is prepared by mixing the following raw materials, the raw material names and weight parts are as follows: 80-100 parts of magnesium oxide; 20-30 parts of anhydrous magnesium chloride; 10-20 parts of modified expanded vermiculite foaming agent; 20-30 parts of aluminum silicate fiber; 5-10 parts of sawdust; 10-15 parts of fly ash; 8-12 parts of glass magnesium board crushed powder; 1.5-5 parts of non-woven fabric; 10-20 parts of water; wherein the modified expanded vermiculite is prepared by the following steps: (1) Vermiculite is incompletely expanded and calcined; (2) acrylic acid monomer, sodium hydroxide, acrylamide monomer, initiator potassium persulfate, crosslinking aid pentaerythritol polyglycidyl ether, incompletely expanded vermiculite, and water are taken, stirred evenly and ultrasonically dispersed to obtain a first reaction solution, which is placed in a reactor for reaction to obtain a gel material; (3) the gel material is preliminarily crushed and dried, and then further crushed in a ball mill to obtain a fire-resistant expanded vermiculite with water absorption performance.

The invention provides a rare earth heat insulation coating and a preparation method thereof. The coating comprises the following components in parts by weight: 50-60 parts of acrylic resin, 10-15 parts of polyurethane modified epoxy resin, 5-8 parts of nano rare earth powder, 3-5 parts of filler, 0.5-1 part of a coalescing agent, 1-2 parts of a defoaming agent, 1-3 parts of a dispersing agent, 0.5-1 part of an ultraviolet light absorber and 1-2 parts of a silane coupling agent. Wherein the nano rare earth powder comprises lanthanum oxide powder, cerium chloride powder and yttrium hexaboride powder, and the filler comprises nano hollow microspheres, nano calcium carbonate and nano aluminum silicate. The rare earth heat insulation coating has excellent heat insulation effect and mechanical property, and can be applied to various scenes.

The invention provides a light super-soft fire-resistant flame-retardant optical cable and a preparation method thereof. The light super-soft fire-resistant flame-retardant optical cable sequentially comprises a high-temperature-resistant optical fiber, a filling layer, a flame-retardant loose tube, a reinforcing layer, a heat insulation layer and a fire-resistant flame-retardant layer from inside to outside, the fireproof flame-retardant layer comprises the following preparation raw materials in percentage by mass: 55-65% of plasma activated mineral powder, 25-35% of a thermoplastic elastomer base material subjected to irradiation crosslinking treatment, 8-12% of a phosphorus-nitrogen intumescent flame retardant and 1.5-2.5% of a silane coupling agent; the nano mineral powder comprises a magnesium aluminum silicate compound, and the thermoplastic elastomer matrix comprises a blend of SEBS (Styrene-Ethylene-Butylene-Styrene) and TPU (Thermoplastic Polyurethane). The fire-resistant flame-retardant layer forms a ceramic protection layer at high temperature to perform fire-resistant flame-retardant protection and prevent heat transfer, and meanwhile, the heat insulation layer is matched to further prevent heat from being transferred to the cable core, so that the performance of the optical cable is ensured not to be influenced.

The invention relates to the technical field of brake pads, in particular to a brake pad capable of reducing abrasion of a brake disc and a preparation technology thereof.The brake pad comprises, by weight, 20%-32% of reinforcing fibers, 12%-18% of a binder, 22%-34% of a friction regulator and 24%-38% of filler and functional additives, the reinforced fibers are at least one of titanium carbide coated carbon fibers, steel fibers and aluminum silicate ceramic fibers. According to the invention, the reinforced fibers construct a high-strength heat conduction network, and heat is quickly dispersed to reduce thermal stress concentration; the binder ensures the structural stability at high temperature; the friction regulator optimizes a friction coefficient curve through the synergistic effect of lubrication and friction increasing, and high-temperature fluctuation is avoided; the filler and the functional additive enhance the heat absorption and buffering capability, and adjust pores to relieve thermal shock. All the components have a synergistic effect, so that hot cracks of the brake disc can be reduced, and the crack resistance and the brake stability under extreme working conditions are improved.

The invention provides an aluminum oxide aerogel composite material as well as a preparation method and application thereof, and belongs to the technical field of aluminum oxide aerogel preparation. The preparation method provided by the invention comprises the following steps: (1) preparing aluminum sol by taking coal gangue as an aluminum source; (2) mixing the aluminum sol obtained in the step (1) with aluminum silicate fibers, and performing gelation to obtain composite hydrogel; and (3) mixing the composite hydrogel obtained in the step (2) with ethanol, aging, mixing with a modifier, modifying, and carrying out graded normal-pressure drying to obtain the aluminum oxide aerogel composite material, the modifier in the step (3) is one or more of absolute ethyl alcohol, tetraethoxysilane and normal hexane. The alumina aerogel composite material prepared by the preparation method provided by the invention has the characteristics of low density, low heat conductivity coefficient and high strength, and is suitable for the high-temperature processing field of special materials and the aerospace field.

The invention belongs to the field of battery materials, and particularly relates to a high-adhesion battery diaphragm binder, slurry, a diaphragm and a preparation method of the high-adhesion battery diaphragm binder, and the high-adhesion battery diaphragm binder based on an acrylate copolymer is prepared through a specific reaction. And then, mixing the binder with two inorganic nano materials, namely a lithium-doped aluminum borosilicate nanowire and a sulfo-functionalized lithium zirconate titanate nanosheet, boehmite and / or aluminum oxide and the like, so as to prepare the high-adhesion diaphragm coating slurry. Wherein the nanowires provide mechanical enhancement and chemical crosslinking points, and the nanosheets improve the interface adhesion and the ionic conductivity. And finally, coating the slurry on the surface of a polypropylene diaphragm, and performing multi-stage drying and heat treatment to obtain the composite diaphragm. The diaphragm has extremely high coating bonding strength, excellent electrolyte wettability and good thermal dimensional stability and ionic conductivity, and is particularly suitable for high-energy-density lithium ion batteries and sodium ion batteries.

The invention relates to the technical field of thermal insulation materials, in particular to a high-temperature-resistant aerogel composite material and a preparation method thereof. The high-temperature-resistant aerogel composite material is prepared from the following components in parts by weight: 15 to 35 parts of reinforced fiber matrix, 43 to 65 parts of silicon-aluminum-zirconium ternary aerogel network, 3 to 12 parts of functional nano filler, 2 to 8 parts of zinc borate flame-retardant component and 0.5 to 2 parts of surface hydrophobic modified layer. Wherein the reinforced fiber matrix is composed of aluminum silicate fibers, silicon carbide fibers and aluminum oxide nanofibers; the molar ratio of silicon to aluminum to zirconium in the silicon-aluminum-zirconium ternary aerogel network is 5: 2: 1; the functional nanofiller comprises aluminum oxide nanoparticles, titanium oxide nanoparticles, carbon nanotubes and boron nitride nanosheets; the zinc borate flame-retardant component is zinc borate; the surface hydrophobic modification layer comprises an inner methyltrimethoxysilane modification layer and an outer hexamethyldisilazane modification layer. The high temperature resistance and thermal shock resistance of the material are remarkably improved, a low-energy-consumption preparation process is adopted, and the material has excellent comprehensive performance.

The invention provides a polysilicate aluminum zirconium coagulant as well as a preparation method and application thereof, and relates to the technical field of solid waste recycling. The preparation method of the polysilicate aluminum zirconium coagulant comprises the following steps: S1, activation preparation of a polysilicate solution; S2, introduction and pre-complexation of a metal salt solution; and S3, alkalization induced polymerization and curing. According to the invention, the efficient charge neutralization capability of zirconium and aluminum metal ions and the long-chain network structure characteristic of polysilicic acid are organically combined through a copolymerization reaction by molecular design, the developed polysilicate aluminum zirconium coagulant can maintain a good coagulation effect in a wide pH range, is suitable for treating residual sludge with different sources and properties, and has a good coagulation effect under the dosage of 7.5%. The CST value is reduced to 35.4 s from 190.7 s, the water content of a filter cake is reduced to 77.4%, and the Zeta potential is-8.2 mV, so that the polysilicate aluminum ferric coagulant is obviously superior to a traditional polysilicate aluminum ferric coagulant, and has the advantages of high operation flexibility, good process stability and good application prospect.

The application provides an oilfield produced water treatment method. The method comprises the following steps: adding a polymeric aluminum ferric silicate solution into oilfield produced water to be treated, and stirring for a period of time at a first rotating speed; increasing the first rotating speed to a second rotating speed, adding a polyacrylamide solution, stirring for a period of time at the second rotating speed after the addition is completed, and then standing for a period of time; and filtering to obtain treated oilfield produced water. The method has the advantages of simplicity, high efficiency, low cost, easy operation, remarkable treatment effect and the like.

Provided is an efficient combined nano iron suspension fertilizer. The suspension fertilizer efficient combined nano iron is prepared from ingredients including, in mass percentage: 10.0% to 20.0% of FeSO4; 0.5% to 2.0% of zero-valent iron nanoparticles (nZVI); 5.0% to 10.0% of magnetic iron oxide nanoparticles (Fe3O4-NPs); 30.0% to 50.0% of citric acid; 1.0% to 5.0% of a dispersant 5040; 0.2% to 1.0% of xanthan gum; 1.0% to 5.0% of magnesium aluminum silicate; and water as a balance.

The invention discloses a steel slag cement grinding aid and a preparation method and application thereof, and belongs to the technical field of concrete admixtures, the steel slag cement grinding aid comprises the following raw materials by mass: 80-90% of steel slag, 4-6% of an acid solution and 6-14% of magnesium aluminum silicate waste residue. The preparation method comprises the following steps: crushing the steel slag, and mixing and stirring the crushed steel slag, the acid solution and the magnesium aluminum silicate waste residue to obtain the steel slag cement grinding aid. The steel slag cement grinding aid prepared by the method provided by the invention is low in cost, non-toxic and non-corrosive, improves the grinding effect of a cement product, provides a way for solving the technical problem for waste slag and steel slag discharged by iron and steel enterprises, and has the effects of saving energy, reducing emission, reducing carbon emission, protecting the environment and improving the economic benefit. And moreover, the preparation method is advanced and is widely suitable for being used in cement enterprises.

The invention belongs to the technical field of thermal insulation materials, and particularly relates to an aluminum silicate thermal insulation material and a preparation method thereof. The aluminum silicate thermal insulation material is prepared from the following raw materials in parts by weight: 60 to 80 parts of aluminum silicate fiber, 5 to 15 parts of polyvinyl alcohol fiber, 15 to 25 parts of function enhanced compound and 8 to 12 parts of silica sol, the polyvinyl alcohol fiber provides flexible bonding for the aluminum silicate fiber in the initial preparation stage, and the brittleness is improved; functional enhanced compound particles are dispersed in a fiber network, and a rigid framework of the functional enhanced compound particles and a flexible support of fibers form rigid-flexible complementation, so that the compression resistance is improved. The surface active sites of the silicon carbide aerogel activated and modified in the function enhancing compound are increased, the silicon carbide aerogel can be stably combined with polyimide chopped fibers through chemical bonds, and a compact interface layer can be constructed by means of permeation and coating of boehmite sol; the prepared aluminum silicate thermal insulation material has excellent thermal insulation effect and stable mechanical property.

The invention discloses a method for in-situ growth of whiskers on the surface of a fiber preform, and belongs to the technical field of fiber surface modification. The preparation method comprises the following steps: firstly, preparing alkaline silica sol, carrying out chemical reaction on the alkaline silica sol and an aluminum source under the catalytic action of a catalyst to generate an intermediate gas-phase product, then carrying out mullite nucleation reaction and carrying out anisotropic growth to obtain mullite whiskers, and taking an aluminum silicate fiber felt as a template; the mullite whiskers grow in the radial direction of the fibers and are evenly distributed on the surfaces of the fibers, and then the long and thin needle-shaped mullite whiskers are obtained. The mullite whiskers grow on the surfaces of the fibers in situ, the mechanical property of the aluminum silicate fibers is remarkably improved through the multi-scale structural design and the interface synergistic effect, and when the material is subjected to external force, the internal whiskers are bent, stretched and shrunk under the external force, so that the internal stress at the fiber lap joint points is weakened, and the mechanical property of the aluminum silicate fibers is improved. The mechanical property of the material is improved.

The invention discloses a preparation method of a low-magnetic-conductivity high-strength iron-silicon magnetic powder core, which comprises the following steps of: 1, phosphating iron-silicon alloy magnetic powder, and physically coating the phosphated magnetic powder by using magnesium aluminum silicate gel with a layered structure; 2, preheating the magnetic powder obtained in the step 1 in an inert atmosphere; 3, sufficiently and uniformly mixing magnesium aluminum silicate gel, a binder and the magnetic powder obtained in the step 2, heating a mixed system, and mechanically stirring until the powder is dried; 4, the magnetic powder obtained in the step 3 and a lubricant are mechanically stirred to be evenly mixed and then pressed into a magnetic powder core blank; and 5, the blank obtained in the step 4 is subjected to heat treatment under the inert protective atmosphere. The magnetic powder core prepared by the method has the characteristics of low magnetic conductivity and high strength.

The invention discloses a polyphenyl ether modified epoxy resin-based copper-clad plate, and particularly relates to the technical field of copper-clad plates, the polyphenyl ether modified epoxy resin-based copper-clad plate comprises a glue solution, an electronic glass fabric and a copper foil, and the glue solution comprises the following raw materials: modified polyphenyl ether, an inorganic filler, a curing agent, a flame retardant and the balance of epoxy resin. The bisphenol A epoxy resin, toluene and benzoyl peroxide are utilized to treat polyphenyl ether, the molecular weight of the polyphenyl ether can be reduced, the crosslinking property of the polyphenyl ether and the epoxy resin is better, then paraformaldehyde is utilized to catalyze and modify the polyphenyl ether, the terminal of the polyphenyl ether is grafted with hydroxymethyl, and the polyphenyl ether is grafted with polyphenyl ether. The compatibility and interface bonding force of the obtained hydroxymethylated polyphenyl ether and epoxy resin are good, the dielectric loss performance and toughness of the copper-clad plate can be effectively improved, and anhydrous aluminum silicate of an amorphous layered gap structure formed through specific activation treatment can be formed during temperature-controlled calcination of kaolin. The dielectric constant and the dielectric loss of the copper-clad plate can be obviously reduced.

The invention discloses foam concrete based on acidic iron tailing sand. The foam concrete comprises the following components in parts by weight: 200-500 parts of cement, 100-400 parts of acidic iron tailing sand, 50-150 parts of superfine slag powder, 15-25 parts of a composite acid-resistant foaming agent solution, 1-10 parts of composite fibers and 200-300 parts of water, the composite acid-resistant foaming agent solution is prepared by mixing a composite acid-resistant foaming agent and water, and the composite fiber comprises a combination of organic reinforced fiber and inorganic modified fiber. According to the preparation method, the long-term stability and the acid resistance of the foam concrete can be remarkably improved, and meanwhile, the overall performance of the foam concrete is remarkably improved by utilizing the acid resistance and the high temperature resistance of the polymer coated aluminum silicate fibers.

This invention discloses a gravure printing ink composition and its preparation method. The ink, by weight, comprises: 15-35 parts chlorinated polypropylene, 10-20 parts EVA-40W, 4-8 parts rosin-modified resin, 0.3-0.8 parts polyketide resin, 0.1-0.3 parts chlorinated ether resin MP45, 0.3-0.8 parts silica, 0.05-0.15 parts antistatic agent, 0.2-0.5 parts dispersant, 0.1-0.3 parts modified aluminum silicate AM660, 8-12 parts benzidine yellow, 6-10 parts fast red BHXL-T, 3-5 parts permanent orange yellow No. 13, 3-7 parts calcium powder, and 30-50 parts mixed solvent. During preparation, each resin is pre-dissolved separately, then mixed with pigments, additives, etc., and ground to a fineness ≤15μm. The ink of this invention has bright colors, good light resistance, excellent adhesion, antistatic properties, and printability, and is particularly suitable for gravure printing on polyolefin films.

The invention provides fiber-improved anti-crack flow state solidified soil and a preparation method thereof, and belongs to the technical field of engineering materials, and the fiber-improved anti-crack flow state solidified soil comprises water and powder; the water-solid ratio of the water to the powder is 0.4-0.6; the powder material is prepared from the following raw materials in parts by mass: 84 to 85 parts of constructional engineering soil, 0.1 to 1 part of polyacrylamide modified aluminum silicate fiber and 10 to 20 parts of soil curing agent. The problems that in the prior art, traditional flow-state solidified soil is poor in toughness, so that the crack resistance and ductility are poor, and the water stability and the anti-scouring performance are low can be solved.

The present application relates to the technical field of pesticide production, in particular to a kind of propiconazol fluquinconazole suspending agent and preparation method thereof, by weight percentage, comprising: propiconazol 10-30%, fluquinconazole 5-15%, wetting dispersant 5-15%, magnesium aluminum silicate 0.1-1.5%, xanthan gum 0.01-0.5%, anti-freezing agent 3-8%, organic silicon 0.01-0.2%, preservative 0.01-0.2%, and deionized water makes up the rest, by optimizing product formula system, ensure stability while improving efficacy, and it is water-based preparation, dosage form is environmentally friendly, and it is friendly to environment, and toxicity is low toxicity, and the harm to human and other beneficial organisms is less.

The invention relates to the technical field of carbon anode roasting furnaces, and provides an anode roasting furnace cross wall building method which comprises the steps that a cross wall deformation area is measured, and a cross wall is judged to be a deformed cross wall according to a comparison result between measured data and a preset deformation threshold value; the damage degree of the flame path wall in the adjacent direction of the deformed cross wall and the cross walls on the two sides is checked, and the deformed cross wall is dismantled layer by layer under the condition that preset requirements are met; the method comprises the following steps: cleaning broken bricks and aluminum silicate fiber scraps at the bottom of a furnace, inlaying and repairing a damaged base surface of the bottom of the furnace, smearing high-temperature cement gum with the thickness of 2mm-4mm on the base surface, laying refractory bricks with preset specifications on the base surface, laying aluminum silicate fiber blankets with the thickness of 20mm on two sides of each layer of refractory bricks, and detecting the perpendicularity of a newly-built cross wall when the building height reaches 1m; continuously constructing until a constructed target transverse wall is formed; and the wall surface flatness of the target cross wall is detected, and ultrasonic flaw detection is conducted on the target cross wall. According to the method, the transverse wall repairing quality and the furnace body stability are improved.

The utility model relates to the field of aluminum silicate high-temperature-resistant shells, in particular to an aluminum silicate high-temperature-resistant shell easy to install. Comprising a first shell, the inner wall of the first shell is fixedly connected with a connecting plate, the surface of the connecting plate is slidably connected with a second shell, the surface of the second shell is provided with a connecting structure, the connecting structure comprises two fixing plates and two connecting blocks, the two fixing plates are fixedly connected with the second shell, and the two connecting blocks are fixedly connected with the connecting plates. The two connecting blocks are fixedly connected with the first shell, and the sides, away from each other, of the two fixing plates are fixedly connected with auxiliary plates and positioning plates. According to the aluminum silicate high-temperature-resistant shell easy to install, the problems that due to the fact that two aluminum silicate shells are fixed through bolts, a screwdriver needs to be used for rotating and fixing the two aluminum silicate shells when the two aluminum silicate shells are installed in a butt joint mode, and due to the fact that the fixing mode is very tedious, the aluminum silicate shells cannot be installed easily are solved. And therefore, the working efficiency of the personnel is low.

The application discloses a ceramic fiber paperboard and a preparation method thereof. The preparation method of the ceramic fiber paperboard comprises the following steps: a) placing aluminum silicate fibers in a corrosion solution for soaking to obtain aluminum silicate fibers with corroded surfaces; b) mixing and stirring the aluminum silicate fibers with the corroded surfaces with a modifier to obtain aluminum silicate fibers loaded with the modifier; c) performing calcination treatment on the aluminum silicate fibers loaded with the modifier, and removing impurities after cooling to obtain modified aluminum silicate fibers; d) preparing the modified aluminum silicate fibers into a slurry, adding a bonding agent for stirring to obtain a mixed slurry, and preparing a paperboard precursor based on the mixed slurry; and e) performing bonding agent impregnation treatment on the paperboard precursor, removing excess bonding agent, and drying and shaping to obtain a finished ceramic fiber paperboard. The ceramic fiber paperboard prepared by the preparation method has excellent physical properties, and the applicability of the ceramic fiber paperboard can be improved.

The utility model discloses a high-temperature-resistant control cable for an electric transfer vehicle, which comprises a cable core, and aluminum silicate ceramic fiber ropes are filled in gaps of the cable core. A high-temperature-resistant high-strength alkali-free wax-free glass fiber tape is wrapped outside the cable core; a fire-resistant halogen-free flame-retardant polyolefin inner sheath is extruded outside the high-temperature-resistant high-strength alkali-free wax-free glass fiber tape, a high-temperature fire-resistant synthetic crystal insulating tape is lapped outside the fire-resistant halogen-free flame-retardant polyolefin inner sheath, and a second fluorocarbon resin nano coating is coated outside the high-temperature fire-resistant synthetic crystal insulating tape; a fluorocarbon resin nano coating is arranged outside the cable, a high-temperature-resistant basalt braided tube is arranged outside the fluorocarbon resin nano coating, a high-temperature-resistant factice aluminum-plastic composite belt is wrapped outside the high-temperature-resistant basalt braided tube, and a 150 DEG C halogen-free low-smoke irradiation polyolefin outer sheath is extruded outside the high-temperature-resistant factice aluminum-plastic composite belt, so that the use requirements in high-temperature and high-heat radiation environments are met; and the electric transfer trolley also has the advantages of fire prevention, corrosion resistance, aging resistance, high strength, impact resistance and the like, and provides powerful guarantee for safe operation of the electric transfer trolley.

The invention relates to a chromium-free environment-friendly insulating coating paint and a thin electrical steel strip. The chromium-free environment-friendly insulating coating comprises the following components in percentage by mass: 15%-23% of phosphate; 8%-13% of epoxy resin emulsion; 0.3%-1.2% of boric acid; 0.4%-4.7% of a metal inorganic salt additive; 0.3%-1.1% of a metal hydroxide; 0.1%-0.44% of a coupling agent; 7%-26% of hollow ceramic microsphere particles; and 30.56% to 68.9% of deionized water. The metal inorganic salt additive is at least one of barium oxalate, strontium sulfate and aluminum silicate. The phenomena that solid components in the coating sink to the bottom and water is separated from the surface can be avoided, the compactness of the coating is improved, the wear resistance and corrosion resistance of the coating are improved, the resistivity of the insulating coating can be remarkably improved through the nanoscale hollow ceramic microsphere particles, the loss of electrical steel is reduced, the adhesiveness of the coating is enhanced, and cracks of the coating are reduced.

The utility model discloses a novel crucible for synthesizing silicon carbide powder, which comprises a crucible main body, the outer surface of the crucible main body is connected with a slow heating and cooling mechanism, the two sides of the slow heating and cooling mechanism are both fixedly connected with connecting blocks, one end of each connecting block is fixedly connected with a dismounting and fixing mechanism, and the other end of each connecting block is fixedly connected with a connecting rod. The slow heating and cooling mechanism comprises ceramic fibers, aluminum silicate fibers and perlite, the ceramic fibers are connected to the outer surface of the crucible body, the aluminum silicate fibers are connected to one ends of the ceramic fibers, and the perlite is arranged between the ceramic fibers and the aluminum silicate fibers; the crucible is simple in structure and reasonable in design, the phenomenon that when the temperature of the crucible body changes violently, the crucible body is broken or deformed due to thermal shock, and the whole synthesis process of materials is affected is avoided, the disassembly and assembly fixing mechanism comprises the insertion rod, the telescopic rod and the spring, the trouble of repairing the whole crucible body in the later period is avoided, and the maintenance cost in long-term use is reduced.

The invention discloses a coal mine underground consolidated solid waste filling material and a preparation method thereof, the coal mine underground consolidated solid waste filling material comprises the following components by weight: 30-50 parts of a gel base material, 40-60 parts of slag, 20-30 parts of gypsum powder, 30-40 parts of slag, 20-30 parts of aluminum silicate powder, 5-10 parts of a composite admixture and water, the gel base material is formed by mixing cement and coal mine solid waste aggregate according to a mass ratio of 2: 3, and the composite admixture is formed by mixing cement and coal mine solid waste aggregate according to a mass ratio of 2: 3. The cement is 42.5-grade Portland cement, the coal mine solid waste aggregate is one or a mixture of two of coal mine underground tunneling gangue powder or coal slime, the slag is S95-grade granulated blast furnace slag powder, the particle size of the gangue powder is 0.1-0.5 mm, and the water content of the tailing slime is 15-20%; according to the filling material for consolidating the solid waste in the underground coal mine and the preparation method thereof, the filling strength requirement of a mine goaf can be met when the filling material is used, the overall comprehensive performance is excellent, waste is comprehensively utilized, and the filling material is economical, environmentally friendly and suitable for application and popularization.

The invention belongs to the technical field of coal mine gob-side entry retaining and goaf filling, and particularly relates to a high-water-content material and a preparation method thereof.The high-water-content material is composed of a composition A, a composition B, an auxiliary material A and an auxiliary material B. The composition A is a mixture of fly ash and silica alumina; the composition B is sulphoaluminate cement and comprises any one or a combination of any two or more of 725 cement, 525 cement and 425 cement; the auxiliary material component A is a mixture of anhydrous calcium sulfate and magnesium aluminum silicate; and the auxiliary material B component is calcium hydroxide. By preparing the high-water-content material, the purposes of energy conservation and environmental protection are achieved, the economic benefit can be improved, and the problem of low utilization rate of the fly ash is solved.

The present solution provides a hybrid coagulant based on aluminum-iron silicate, where the molar concentration of silicon is in the range of 0.1 to 0.5 mol∙l-1, the molar ratio of the sum of aluminum and iron to silicon is in the range of 1:0.5 to 1:1.5, the molar ratio of aluminum to iron is in the range of 0.5:1 to 5:1, and a method of its preparation by mixing hydrated aluminum sulfate, hydrated iron sulfate and an acidic solution of silicon dioxide.

The application provides a phosphogypsum-based supersulfated cementing material and a preparation method thereof, and belongs to the field of building materials.The preparation method comprises the following steps: after ball milling materials are mixed, wet milling treatment is performed to obtain a wet milling slurry, the ball milling materials comprise: polymeric aluminum-iron silicate, water, phosphogypsum, portland cement and ground slag powder; the wet milling slurry is subjected to sealed aging treatment to obtain an aging slurry; the aging slurry is mixed and stirred with the ground slag powder, the portland cement, a water reducing agent and water to obtain a supersulfated cementing material slurry; and the supersulfated cementing material slurry is poured and maintained to a target age to obtain the phosphogypsum-based supersulfated cementing material.By mixing the polymeric aluminum-iron silicate and performing mixed wet milling on part of the materials, the fluorine and phosphorus impurities in the phosphogypsum are effectively adsorbed and solidified, the reaction activity of the phosphogypsum-based supersulfated cementing material system is significantly excited, and the compressive strength, especially the early compressive strength, is improved.

A semiconductor device includes a lower wiring structure disposed within a lower interlayer insulating film, and the lower wiring structure including a lower barrier film and a lower filling film disposed on the lower barrier film, a wiring isolation pattern extending along an upper surface of the lower interlayer insulating film, in contact with the lower interlayer insulating film, and the wiring isolation pattern including aluminum silicate, an upper interlayer insulating film disposed on the lower wiring structure and the wiring isolation pattern, and an upper wiring structure disposed within the upper interlayer insulating film and connected to the lower wiring structure.