13results about How to "Easy to anchor" patented technology

The utility model provides a clamping piece for building wall body connection and a building wall body, the clamping piece comprises a U-shaped main body, the U-shaped main body comprises a bottom plate and two parallel side plates; the connecting piece is arranged on a bottom plate of the U-shaped main body, the connecting piece is perpendicular to the bottom plate, the connecting piece and the bottom plate are welded and fixed, and the connecting piece extends in the direction away from an opening of the U-shaped main body. Due to the fact that the bottom plate of the U-shaped body can be directly and fixedly connected with the concrete column through a steel bonding method, the defect that holes need to be drilled in the concrete column in a traditional steel bar planting process is overcome, and the integrity of the frame structure is effectively protected. Due to the arrangement of the U-shaped main body, the welding base surface of the connecting piece is larger, the connecting strength is improved, the bonding area between the bottom plate and the concrete column is larger, and the connection is reliable.

This invention relates to the field of self-cleaning coating materials, and discloses the preparation and application of a nanofiber-confined Fe single-atom self-cleaning coating material. The invention uses wood nanofibers as a carbon-based carrier to obtain nanofiber-confined Fe single-atom materials. The three-dimensional network structure generated during the acidic hydrolysis of methyl orthosilicate enhances the bonding between the nanofiber-confined Fe single-atom materials, nano-silica, and nano-titanium dioxide nanoparticles. After hydrolysis, a diluent is added, and the reaction proceeds to obtain the nanofiber-confined Fe single-atom self-cleaning coating material. This self-cleaning coating material has a simple process, high operability, excellent antistatic properties, superhydrophilicity, and photocatalytic activity. It exhibits excellent anti-fouling potential in self-cleaning coating material applications and has broad application prospects.

The invention discloses a near-neutral synthesis method of high-aluminum-content mesoporous aluminosilicate, which comprises the following steps: firstly, dissolving a template agent in deionized water, and fully stirring to obtain a uniform template agent solution; the preparation method comprises the following steps: uniformly mixing a silicon source with an inorganic salt, and uniformly mixing an aluminum source with a dilute sulfuric acid solution in deionized water to prepare a silicate solution and an aluminum salt solution; synchronously dripping the silicate solution and the aluminum salt solution into the template agent solution to form an aluminosilicate precursor; and performing crystallization, suction filtration, washing, drying and roasting treatment on the precursor to finally obtain the mesoporous aluminosilicate material. In the process of synthesizing the mesoporous aluminosilicate by using the inorganic salt under the near-neutral condition, anions and aluminum ions form a soluble complex (such as Al (HCO3) 2 +), hydrolytic precipitation of aluminum species in a neutral environment is effectively inhibited, and it is ensured that the aluminum element participates in the reaction in an active form; the efficient synthesis of the mesoporous aluminosilicate material with high aluminum content and high order degree is realized.

This invention discloses a carbon fiber composite material for rail transit vehicles and its preparation process, relating to the field of carbon fiber composite material technology. The method uses carbon fiber cloth as a matrix, depositing a polydopamine layer on its surface, then loading graphene epoxide, and using the polydopamine layer to grow manganese dioxide nanosheets in situ to obtain a carbon fiber matrix. Epoxy resin is then prepolymerized by pouring it into a mold, and the carbon fiber matrix is ​​laid flat in the prepolymerized resin. Epoxy resin is then poured in again, and the mixture is heated and cured under a pressure of 45–50 N to obtain the carbon fiber composite material. The carbon fiber composite material prepared by this method exhibits excellent mechanical properties, with improved tensile strength and interlaminar shear strength, and can be widely used in vehicles, ships, and other fields, demonstrating high practicality.

The present invention provides a series of new percutaneous concepts of paravalvular repairs including identifying the leak location, several repair techniques and finally built-in means for leak prevention, built on percutaneous valves. A catheter-delivered device locates cavities occurring between a prosthetic valve (250) and the wall of the body vessel where the valve is implanted, the cavities producing paravalvular leaks during diastole, the device comprising at least one of a plurality of flexible wires, the wire having attached to it a balloon, wherein the balloon is pulled by the leak through the cavity and wherein the wire then serves to mark the cavity location.

This invention relates to the field of cement building materials, specifically disclosing a cement-based protective material with both ion trapping and induced passivation functions and its application. The cement-based protective material comprises the following components: 95-100 parts by weight of magnesium phosphate cement, 4-6 parts by weight of retarder, and 20-25 parts by weight of composite modifier. The composite modifier comprises modified dry powder, calcium-containing dry powder, mixing water, and a dispersant, and the modified dry powder is obtained by calcining a layered bimetallic hydroxide with an aluminum source. The cement-based protective material of this invention exhibits high Cl- content... ‑ SO4 2‑ In addition to its excellent impermeability in CO2 environments, it can also actively capture corrosive ions, promote the formation and maintenance of a stable passivation film on the steel surface, thereby providing more long-lasting and reliable protection for marine steel structures.

This utility model relates to the field of oil extraction, specifically to a sealing and isolating device; it includes an upper connecting unit, a desealing unit, a sealing unit, a lower connecting unit, and an anti-backflow unit; one end of the desealing unit is connected to the upper connecting unit, and the other end is connected to the sealing unit; the sealing unit is connected to both the lower connecting unit and the anti-backflow unit; and the lower connecting unit is connected to the anti-backflow unit. This device has a reasonable structure and is easy to operate. It greatly simplifies the construction process for renovating old wells in oil fields, reduces labor intensity, lowers operational risks, and reduces construction costs.

The present invention provides a series of new percutaneous concepts of paravalvular repairs including identifying the leak location, several repair techniques and finally built-in means for leak prevention, built on percutaneous valves. A catheter-delivered device locates cavities occurring between a prosthetic valve (250) and the wall of the body vessel where the valve is implanted, the cavities producing paravalvular leaks during diastole, the device comprising at least one of a plurality of flexible wires, the wire having attached to it a balloon, wherein the balloon is pulled by the leak through the cavity and wherein the wire then serves to mark the cavity location.

The present application belongs to the technical field of heterogeneous catalytic materials and its preparation and application, and particularly relates to a heterogeneous photo-Fenton iron monatomic catalyst, a preparation method and application thereof. The catalyst is composed of a graphite-like carbon nitride carrier containing sulfur doping and iron monatomic combined with the carrier, wherein the mass fraction of iron element in the catalyst is 0.1-3.0 wt.%. The preparation of the catalyst includes a sulfuric acid-induced precursor self-assembly process and an in-situ pyrolysis process, which is low in raw material cost, simple in operation, low in equipment requirement, environmentally friendly and can be popularized on a large scale. The highly dispersed Fe atomic catalytic active sites in the catalyst form stable chemical bonds with the sulfur-doped carbon nitride carrier with a porous structure, which not only improves the metal utilization rate, but also solves the problems of metal agglomeration and ion leaching. The catalyst can form an efficient photo-Fenton catalytic system in a low-concentration hydrogen peroxide solution, realizes efficient and rapid degradation of various kinds of organic pollutants, and has a broad application prospect.

This invention discloses a composite ultrathin lithium foil, its preparation method, and its applications. It is formed by combining high-oxidation-degree graphene, carbon nanotubes, and molten lithium metal, followed by cooling and rolling. The oxygen-containing functional groups on the graphene react with lithium to form lithiophilic sites. The carbon nanotubes are treated with silicon and zinc acetate to enhance their lithiophilicity, allowing them to be uniformly dispersed in the molten lithium. After cooling, the composite ultrathin lithium foil is rolled using a roller mill. The composite ultrathin lithium foil provided by this invention has high tensile strength and Young's modulus due to the network structure formed by graphene and carbon nanotubes, facilitating large-scale processing and application. Coating it onto the surface of the negative electrode of a lithium-ion battery can pre-lithiate the electrode material, thereby effectively improving the initial coulombic efficiency of the lithium-ion battery. The capacity corresponding to the lithium foil can be controlled by changing the content of graphene and carbon nanotubes to achieve precise pre-lithiation, further improving the performance of lithium-ion batteries to meet the requirements of energy storage applications.

The utility model discloses a seawater culture anchor base system, including main culture area, the area surrounded by a plurality of adjacent wind power piles is operation area, the main culture area is located in the operation area, a plurality of anchor piles are fixed in the main culture area, a plurality of the anchor pile is arrayed, and four adjacent the anchor pile forms the subculture area around, still fixed with the anchor section between two adjacent the anchor pile of subculture area, still even fixed with a plurality of anchor rings along the length direction of anchor section, through setting up independent safe main culture area in offshore wind power operation area, and utilize a plurality of anchor pile array and anchor section and divide main culture area into a plurality of subculture area, so guarantee safe operation while, also can carry out rich diversification culture.

The invention provides a selenium monatomic coupling PtNiMoPdRh alloy catalyst as well as a preparation method and application thereof, and belongs to the technical field of metal nano catalysts. The preparation method comprises the following steps: performing constant-temperature heat treatment on carbon-selenium mixed powder at 680-700 DEG C to obtain a carbon-selenium compound, uniformly mixing a metal source, a surfactant, a reducing agent and the carbon-selenium compound in a solvent, and reacting at 200-240 DEG C to obtain the selenium monatomic coupled PtNiMoPdRh alloy catalyst. The selenium monatomic coupled PtNiMoPdRh alloy catalyst has the advantages of high conductivity, strong metal-carrier interaction, sufficient active sites, high structural stability, high catalytic activity and the like, and can be used for catalyzing water electrolysis for hydrogen production; in addition, the method is simple, easy to operate, short in reaction time and low in cost, and has good popularization and application prospects.

This invention provides an alkali-activated synergistic nitrogen-phosphorus co-doped porous biomass hard carbon material, its preparation method, and its application. This invention only requires mixing pre-carbonized biomass material, an activator, and a dopant, followed by calcination under an inert atmosphere to obtain a porous hard carbon material. Then, the porous hard carbon material is calcined again under an inert atmosphere to obtain the alkali-activated synergistic nitrogen-phosphorus co-doped porous biomass hard carbon material. This simple and effective method achieves the stepped pore design and nitrogen-phosphorus doping of the hard carbon material, and the obtained nitrogen-phosphorus co-doped porous hard carbon material exhibits high specific capacity and initial coulombic efficiency.