472results about How to "Stop erosion" patented technology

The invention discloses concrete healant, which comprises following components by weight percent: 30 to 55 percent of gelatinization materials, 40 to 65 percent of fine aggregates, 0.1 to 0.5 percent of water reducing component, 0.05 to 0.5 percent of early-strengthening component, 0.05 to 0.2 percent of delayed-coagulation component, 0.2 to 1.0 percent of nano materials, 0.5 to 1.0 percent of high-activity substances, 0.01 to 0.2 percent of water retention thickening component, 0.2 to 2.0 percent of polymer and 0.02 to 0.2 percent of defoaming agent. The concrete healant not only has characteristics of good mobility, fast strength development, high adhesion strength and small retraction, but also can fill active substances into original concrete gaps and can produce compact crystals, so that the cohesion strength of the new and the old concrete interfaces can be remarkably improved, and the concrete healant is applicable to the concrete mending projects of bridges, caves, industrial workshops and civil construction.

The invention relates to a stabilization and solidification method of highly toxic waste residues containing one or more of mercury, arsenic, chromium, cadmium and cyanide. Heavy metal is stabilized through chemicals, and then the highly toxic waste residues are sequentially wrapped with gypsum plus paraffin and epoxy resin. After four times of wrapping and two times of solidification, highly toxic substances in the waste residues are fully solidified into a solidified body, and the generated solidified body is high in strength and long in stability, and can be buried conveniently later.

The invention discloses a sodium alginate-MOF (metal organic framework) composite spherule as well as a preparation method and an application thereof, belongs to the field of material synthesis and overcomes the defect that a conventional MOF material has small grain size and poor acid resistance and is difficult to be separated from water. The co-precipitation technology is adopted, a sodium alginate-MOF mixed liquid is dropwise added to a precipitant solution containing calcium chloride, water and ethyl alcohol, a non-crosslinked composite spherule is obtained, then the composite spherule is added to a glutaraldehyde solution for cross-linking of a sodium alginate framework, the sodium alginate-MOF composite spherule is obtained, the grain size of the spherule is about 1 mm, and the composite spherule has the characteristics of high acid resistance, high separability from water, high water pollutant adsorption capacity, high mechanical strength, long service life, environment-friendliness and the like.

The invention discloses a PID resistance crystalline silicon battery. The PID resistance crystalline silicon battery comprises a silicon dioxide layer and a silicon nitride antireflecting layer which sequentially cover a silicon substrate. A preparation method of the PID resistance crystalline silicon battery comprises the following steps that cleaning, texturing, diffusion, phosphorosilicate glass removing and edge etching are conducted on the silicon substrate; ozone is generated on the surface of the silicon substrate through an ozone generation device, then the silicon substrate is placed under a UV lamp to be irradiated, and a layer of silicon oxide is grown; PECVD equipment is used for growing the silicon nitride antireflecting layer on the silicon oxide, and then printing and sintering of electrodes on a front face and a back face are achieved. According to the PID resistance crystalline silicon battery, the structure of an antireflecting layer of the battery is mainly improved, the compact silicon dioxide layer is prepared between traditional single-layer or multi-layer silicon nitride and the crystalline silicon substrate by using the UV lamp for irradiating, the silicon dioxide layer can prevent erosion of positive ions to PN junctions, and therefore the influence of a PID effect is reduced.

The invention provides an antifouling biological adhesive agent and an antifouling biological adhesive coating. The antifouling biological adhesive agent is organosilicon quaternary ammonium salt surface-modified antibacterial-agent-carried zinc oxide/silicon dioxide hollow microspheres. The adhesive agent comprises organosilicon quaternary ammonium salt, an antibacterial agent and zinc oxide/silicon dioxide hollow microspheres, wherein the mass ratio of the organosilicon quaternary ammonium salt to the antibacterial agent to the zinc oxide/silicon dioxide hollow microspheres is (1-3): (6-50): 5, and the mass ratio of zinc oxide to silicon dioxide in the zinc oxide/silicon dioxide hollow microspheres is 5: (0.1-3). By using a technical scheme in the invention, through organic-inorganic compound synergistic effects, more efficient and more long-term antibacterial and anti-biological adhesive performances are realized, and good biocompatibility, environmental compatibility and use safety are obtained.

The invention provides a modified asphalt waterproof coiled material with a heat insulation function and a preparation method thereof. The coiled material comprises a bottom film 1, a first modified asphalt layer 2-1, a base layer 3 and a second modified asphalt layer 2-2, and is characterized by also comprising a coverage layer 4, wherein the first modified asphalt layer 2-1 and the second modified asphalt layer 2-2 are sequentially arranged on the upper surface of the bottom film 1; the base layer 3 is arranged between the first modified asphalt layer 2-1 and the second modified asphalt layer 2-2; and the coverage layer 4 is arranged on the upper surface of the second modified asphalt layer 2-2. The surface coverage layer is prepared by proportioning raw materials for a film forming agent, synthesizing the film forming agent and preparing a coverage layer material. The performance of the modified asphalt waterproof coiled material is increased by changing the category and the proportion of a filling material in the raw materials in a waterproof structural layer, so that the modified asphalt waterproof coiled material has extremely high waterproof performance and the heat insulation function and is an ideal building energy-saving product.

The invention relates to a light-weight corundum-magnesium aluminate spinel castable and a preparation method thereof. The technical scheme of the invention is taking nano-aperture porous corundum-magnesium aluminate spinel ceramic particles with the partical sizes successively being 3-5mm, 1-2.5mm and 0.1-0.5mm as aggregates, taking nano-aperture porous corundum-magnesium aluminate spinel ceramic fine powder with the partical size being smaller than 0.074mm, magnesium aluminate spinel fine powder, corundum fine powder, magnesia fine powder and alpha-Al2O3 micro powder as matrixes and taking aluminate cement as a binding agent; the preparation method comprises the following steps: mixing the matrixes, the binding agent and sodium hexametaphosphate firstly, then adding the aggregates, uniformly mixing, then adding water, uniformly stirring, moulding by casting, carrying out maintenance, demoulding and drying, and keeping the temperature for 2-6h at the condition with the temperature being 1450-1600 DEG C to obtain the light-weight corundum-magnesium aluminate spinel castable. By adopting the light-weight corundum-magnesium aluminate spinel castable and the preparation method, the process is simple, and a prepared product has the average pore size in a nanoscale, is low in heat conductivity coefficient, good in medium erosion and penetrability resistance and high in thermal shock resistance, and is suitable for parts, including bottoms, walls and the like, of steel ladles.

The invention discloses a composite powered calcium sulfate sewage treatment agent and a method for preparing the same. The sewage treatment agent comprises the following materials in weight portion: 5 to 10 portions of tartaric acid, 3 to 5 portions of malic acid, 60 to 70 portions of calcium sulfate, 10 to 15 portions of magnesium carbonate, 10 to 20 positions of calcium carbonate, 10 to 20 portions of ferric chloride, 10 to 20 portions of calcium oxide and 2 to 3 portions of polyacrylamide. The method is to mix the materials. Compared with the prior art, the sewage treatment agent and the method have the advantages of multifunction, high efficiency, environment protection, quick sewage treatment speed, short treatment time, broad-spectrum and high-efficiency removal of various pollutants and harmful substances and strong adaptively to the sewage muddiness, wide pH value range and wide water temperature change of the sewage. The sewage treatment agent and the method have high alkalization degree, small corrosion, convenient production and no pollution in the production process, simple product package, convenient transportation and low composite cost.

The invention discloses a lithium-lanthanum-zirconium oxide-based solid electrolyte material with stable surface, and a preparation method and an application thereof. The solid electrolyte material comprises an inner core and a coating layer which coats the surface of the inner core; the inner core is a lithium-lanthanum-zirconium oxide-based solid electrolyte (LLZO); and a material of the coatinglayer is an oxide. The inner core part, namely, the LLZO is coated with the oxide coating layer; and the LLZO can maintain a stable three-dimensional phase structure with high ionic conductivity, sothat phase change or thermal decomposition does not occur. The material of the oxide coating layer can change the chemical composition and surface acid-base property of the surface of the LLZO, and can block the erosion of air and water to the LLZO, so that the chemical stability of the LLZO in the air and the water is greatly improved, the application range, the processing environment and the using condition of the LLZO are expanded, and the energy density and the cycling stability of a lithium-lanthanum-zirconium oxide-based battery are improved.

The invention discloses a temperature gradient controlled mass concrete for bridges. The mass concrete comprises an inner layer of low-temperature rise anti-crack concrete I, a middle layer of low-temperature rise anti-crack concrete II and an outer layer of high-tenacity high-crack resistance concrete from the inside to the outside. According to the mass concrete disclosed by the invention, under combination of the low-temperature rise anti-crack concrete (the inner layer of low-temperature rise anti-crack concrete I and the middle layer of low-temperature rise anti-crack concrete II) and the high-tenacity high-crack resistance concrete structure, hydration heat of cementing materials on various layers is respectively absorbed through the characteristics of a high phase-transition temperature of a composite temperature control material in the inner layer of low-temperature rise anti-crack concrete and a low phase-transition temperature of a composite temperature control material in the middle layer of low-temperature rise anti-crack concrete; the inside and the middle temperatures of the concrete are lowered; meanwhile, different thicknesses and layout forms of two concrete materials are optimized and designed; reduction of the temperature difference between the layers is achieved; the overall temperature stress level is reduced; the technical problem of crack of the mass concrete widely existing in bridge engineering can be effectively solved; and the temperature gradient controlled mass concrete for the bridges is applicable to popularization and application.

The invention discloses waterproof crack-resistant foam concrete and a manufacture method thereof. The waterproof crack-resistant foam concrete is formed by mixing and stirring of raw materials including, by weight, 220-350 parts of cement, 90-180 parts of microspheres, 1-6 parts of elastic particles, 0.30-0.45 parts of palm filaments, 60-160 parts of water, 2-9 parts of waterproof admixtures and foam. The waterproof crack-resistant foam concrete and the manufacture method thereof have the advantages that the raw materials such as industrial by-products, tailings powder or waste rubber powder and the palm filaments are adopted, and the multi-scale toughening principle on compounding of the elastic particles and fibers is followed, so that strength and crack resistance of the foam concrete are improved, and waste resource utilization is benefited; the adopted waterproof admixtures are highly compatible with other materials, and accordingly, water resistance and durability of the foam concrete are improved effectively; by the prepared foam which is fine, uniform and high in stability, anti-permeability and thermal performance of the foam concrete are improved; the foam concrete is applicable to heat insulation of building walls and roofs and roadbed refilling materials for highways in regions with soft soil and high water level.

The invention relates to a method of a lithium vanadium phosphate-coated ternary material of a lithium ion battery. The active electrode material of lithium vanadium phosphate is used as a coating material, and can form a uniform coating layer at the surface of the ternary material. A preparation method comprises the following steps of (1) preparing the ternary material; (2) mixing the ternary material and the lithium vanadium phosphate; (3) calcining a mixed sample under the reduction atmosphere. The method has the advantages that the transmission rate of lithium ions of the surface-coated lithium vanadium phosphate material is quick, and the large rate property of the material is improved; the lithium vanadium phosphate material has good stability, the erosion of electrolyte to the ternary material of an inner core is effectively inhibited, the coated ternary material integrates the advantages of the ternary material and the lithium vanadium phosphate, and the good rate property and cyclic property are realized.

A carbon / carbon composite material oxidation-resistant coating comprises the components (by weight portion) of silicon 10%-15%, boron 10%-15%, microcosmic salt 60%-70%, aluminum oxide 5%-10%, the preparation process comprises mixing the four substances, stirring evenly , coating the surface of carbon/carbon composite material, heat treating 2-3 hours (nitrogen atmosphere) at 800 deg. C to 900 deg. C, wherein the coating and high temperature heat treatment processes are carried out under atmospheric pressure.

The invention relates to modified geological polymer seawater and sea sand concrete and a preparation method. The concrete is prepared from, by mass, 5-15% of seawater, 10-30% of sea sand, 30-55% of macadam, 0.1-1% of a water reducing agent, 10-30% of slag, 5-10% of silicon powder, 5-15% of pulverized fuel ash, 0-5% of fibers, 5-15% of calcined magnesite and 0.1-0.5% of an exciting agent. Comparedwith other seawater and sea sand concrete, the modified geological polymer marine concrete is good in chloride ion penetration resistance and further has good crack resistance, the prepared modifiedgeological polymer marine concrete can prevent rebar erosion and resist invasion of harmful ions of external seawater, the strength of the concrete is also improved to a certain degree, and the durability of a concrete structure is further improved.

The invention discloses an FRP pipe and thick-wall steel pipe compounding hollow recycled concrete pile which is mainly formed by an FRP pipe, a round reinforcement cage framework, a thick-wall steel pipe and recycled concrete. The round reinforcement cage framework and the thick-wall steel pipe are arranged in the FRP pipe, and the round reinforcement cage framework, the thick-wall steel pipe and the FRP pipe are arranged concentrically. The recycled concrete is poured in annular space between the FRP pipe and the thick-wall steel pipe. The bearing capacity and deformation resisting capacity of the single pile can be greatly improved through the built-in thick-wall steel pipe. The wrapping FRP pipe can effectively prevent a pile body from being corroded, and the durability of the pile body is improved. Meanwhile, the FRP pipe and spiral stirrups are combined to restrain the inner recycled concrete, and the bearing force of the compounding pile is further improved. Waste concrete is fully utilized as recycled aggregate, and application and popularization of the recycled concrete in building foundation engineering are facilitated. In a word, the compounding hollow recycled concrete pile has the advantages of being good in pile forming quality, high in bearing force, good in deformation resisting capacity and durability, small in influence on the environment, high in construction speed and the like.

The invention discloses a high-impervious microcrystal self-curing type cement additive, which relates to the filed of concrete additive and can be used for preparing high-impervious motar or microaggregate concrete by being mixed with cement. The high-impervious microcrystal self-curing type cement additive comprises the following components in percentage by weight: 30-50% of active silicon oxide, 32-55% of levigated mineral powder or coal ash or quartziferous silicon epitaxy materials or limestone powder, 5-8% of phosphate and 7-11% of water reducer. The additive of the invention can be used for preparing high-impervious flaw self-curing type motar or the microaggregate concrete by being mixed with cement.

The invention discloses a method for repairing a concrete crack by means of pulse electrodeposition, wherein a reinforcing steel bar in concrete is taken as a cathode and a titanium screen is taken as an anode, and the reinforcing steel bar and the titanium screen are arranged near the concrete; a 0.05-0.50 mol per liter zinc saline solution or magnesium saline solution is taken as an electrodeposition solution, and the concrete is immersed into the electrodeposition solution; a pulse power source is adopted, and the on/off time of pulse is between 0.6 and 1 ms; the current density exerted on the surface of the concrete is between 0.25 and 3 amperes per square meter; and the concrete provided with the crack is repaired by means of electrodeposition. The invention also discloses an applicable device for the method for repairing the concrete crack by means of pulse electrodeposition. The method for repairing the concrete crack by means of pulse electrodeposition and the repairing device thereof have the advantages of simple structure, convenient operation, low cost, good effect and so on, and are suitable for concrete structures in a water environment and concrete structures which are difficult to be repaired by the prior repairing technology or have high repairing cost.

The invention relates to a preparation method of an anti-oxidizing coating, wherein the method includes: (1) placing a substrate in a deposition reaction chamber; (2) heating the deposition reaction chamber to 1000-1200 DEG C and maintaining the temperature under vacuum degree of 1-3 kPa; (3) feeding a SiC source gas to deposit a layer of SiC on the surface of the substrate through a CVD process at 1000-1200 DEG C under a negative pressure of 1-3 kPa; (4) cooling the deposition reaction chamber to lower than 800 DEG C under protection of inert gas; (5) on the basis of the formed SiC layer, successively repeating the steps (2) to (4) to deposit the next one SiC layer until the predetermined number of the layers, thus forming the anti-oxidizing coating. In the method, a large thickness compact anti-oxidizing coating is formed on the surface of the substrate through multi-time deposition in a short time. The coating is free of cracks and can significantly improve the high-temperature anti-oxidizing performance of the substrate.

The invention discloses an epitaxial structure of a semiconductor. The epitaxial structure of the semiconductor comprises a nitride nucleating layer formed on a silicon or silicon carbide substrate, a nitride layer on the nitride nucleating layer and an insertion layer inside the nitride layer. The insertion layer comprises a first insertion layer and a second insertion layer placed above the first insertion layer, the first insertion layer is an aluminum gallium nitrogen layer, the second insertion layer is an aluminum gallium nitrogen layer or an aluminum nitride layer, and the average content of aluminum in the first insertion layer is lower than the average content of aluminum in the second insertion layer. The invention also discloses a growth method of the epitaxial structure of the semiconductor. According to the epitaxial structure of the semiconductor disclosed by the invention, the crystal quality can be prevented from dropping when compressive stress is being applied, and a cracking effect or drop of the surface quality possibly caused by the temperature variation can be avoided. In addition, the whole epitaxial layer grows at a high temperature, so that repeated cooling and heating operations are not needed, and the complexity of the process can be reduced.

The invention provides an organic electroluminescent device comprising an anode conductive substrate, a functional layer, a luminescent layer, a cathode layer, a protective layer, and an encapsulating layer. The encapsulating layer comprises an insulating layer, metallic layers, and plate glass. The insulating layer is arranged in a surrounding manner along the edge of the top surface of the anode conductive substrate. A groove is surrounded by the insulating layer surrounding structure. The functional layer, the luminescent layer, the cathode layer, and the protective layer are successively extended from the top surface of the anode conductive substrate to the groove. The metallic layers are disposed on the top surface of the insulating layer and a gap is arranged between the metallic layers and the functional layer, the luminescent layer, the cathode layer, and the protective layer. The sum of heights of the insulating layer and the metallic layers is more than that of the functional layer, the luminescent layer, the cathode layer, and the protective layer. The plate glass is disposed on the top surfaces of the metallic layers. The invention also provides a method for producing the organic electroluminescent device. The method effectively reduces erosion, caused by moisture and oxygen, on the device, and substantially prolongs the service life of the device.

The invention relates to the technical field of ecological treatment and discloses a comprehensive slope treatment technique suitable for soft sandstone areas, comprising biological treatment, material treatment and engineering treatment. The comprehensive slope treatment technique provides treatment for soft sandstone small-watershed slopes from the multi-coupling aspect of biological measures, material measures and engineering measures, wherein the biological measures mainly involve planting in the different allocation modes of Hippophae rhamnoides, Thymus mongolicus, Agropyron cristatum andthe like; the material measures mainly involve anticorrosion growth accelerating materials and chemical grouting materials; the engineering measures mainly involve triangular weirs, interception ditches, interception basins, fish-scale pits, anchors and the like; the three measures are comprehensively allocated in the treatment of soft sandstone rock slopes so that soft sandstone fixation, vegetation growth promotion, and slope water-soil loss reduction are achieved.

The invention discloses a method for modifying a current collector of a lithium ion battery with a conductive metal ceramic. The method comprises the following steps: S1, mixing conductive metal ceramic powder, a film-forming assistant and a bonder as raw materials with water as a dispersant to obtain conductive metal ceramic slurry A; S2, performing spray-drying on the slurry A to prepare conductive metal ceramic powder B with uniform particle size; S3, ultrasonically cleaning the positive or negative current collector by acetone, ethanol and de-ionized water respectively; S4, uniformly spraying the conductive metal ceramic powder B as a raw material onto the surface of the cleaned positive or negative current collector subjected to cleaning in the step S3 by an atmospheric plasma spraying technology to form a conductive metal ceramic coating C on the surface of the positive or negative current collector.