18results about How to "Effective anchoring" patented technology

The invention belongs to the technical field of petroleum and natural gas resource development, and particularly relates to an expansion metal abandoned layer isolation tool. The device comprises a central pipe, an open hole anchoring sealing assembly, a valve hoop and a feeding separation assembly. The open hole anchoring sealing assembly comprises an expansion metal anchoring sealing shell. A sealing cavity is formed between the expansion metal anchoring sealing shell and the central pipe; the upper end and the lower end of the expansion metal anchoring sealing shell are each sleeved with a set of expandable barrel type slips, and the center pipe is sleeved with the expandable barrel type slips. Through type slits are evenly distributed in the expandable barrel type slip. The valve hoop sleeves the central pipe and is in threaded connection with the central pipe; the valve hoop is provided with a channel which is communicated with the central pipe and is communicated with a sealing cavity between the central pipes of the expansion metal anchoring sealing shell; the expansion metal abandoned layer isolation tool is made of metal. The soft metal framework is expanded through hydraulic driving, meanwhile, other anchoring and sealing assemblies installed on the soft metal framework are linked to be expanded together to be attached to the stratum, and the anchoring and sealing functions are achieved.

The invention discloses a methane reforming catalyst capable of improving hydrothermal resistance as well as a preparation method and application of the methane reforming catalyst, and belongs to the technical field of catalyst preparation. According to the catalyst, a modified HAP-Ce composite carrier is prepared through coprecipitation, hydrothermal treatment and calcination, metal precursor salt serves as a modification component, Ni is impregnated and loaded, calcination is conducted, and then water vapor / nitrogen high-temperature hydrothermal treatment and hydrogen reduction are conducted to obtain the target catalyst. According to the catalyst, a heterogeneous metal oxide composite interface is constructed in situ, stable pinning of Ce species is achieved, and the Ni anchoring effect is enhanced, so that Ce migration and Ni sintering under the hydrothermal condition are inhibited, and high reaction activity, excellent carbon deposition resistance and good hydrothermal stability are shown; the preparation method has the advantages of controllable conditions and simple steps, and is easy for large-scale production and application.

The invention relates to a preparation method and application of a supported cobaltosic oxide catalyst, and the preparation method comprises the following steps: 1) dissolving a cobalt source and a carrier precursor in ethanol and water, adding 2-methylimidazole, stirring, standing, aging, and drying to obtain ZIF-67-based precipitate; and 2) carrying out primary roasting on the ZIF-67-based precipitate in a reducing atmosphere and carrying out secondary roasting in an oxidizing atmosphere in sequence to obtain the supported cobaltosic oxide catalyst, and applying the supported cobaltosic oxide catalyst to the reaction of catalyzing propane to generate carbon dioxide and water. Compared with the prior art, the method for preparing the supported cobaltosic oxide catalyst based on the ZIF-67 not only simplifies the preparation process and reduces the cost, but also remarkably improves the performance of the catalyst, and has important practical significance for improving the efficiency and economical efficiency of a VOCs catalytic oxidation technology; the preparation method provides a new and efficient solution for the development of a VOCs catalytic oxidation technology, and is expected to realize more environment-friendly and more economical VOCs treatment in industrial application.

The application discloses an environment-friendly flame-retardant master batch for crosslinked polyethylene and a preparation method thereof, and belongs to the technical field of high polymer flame-retardant materials. The flame-retardant master batch is prepared from LLDPE resin as a base material, an aluminum diethyl phosphinate, melamine polyphosphate and modified magnesium hydroxide to form a phosphorus-nitrogen-inorganic ternary synergistic flame-retardant system, the addition of sepiolite which is resistant to high temperature and flame-retardant, the modification of an interface by using a PE-g-MAH compatilizer, and the addition of compounded antioxidants, lubricants and anti-dripping agents, high-speed mixing, three-screw mixing, single-screw extrusion, surface grinding and cutting, magnetic selection and vacuum packaging. The flame-retardant master batch can make the crosslinked polyethylene material reach UL94V-0 grade with 10% of the addition amount, and has the characteristics of low smoke, environmental protection, low release, high mechanical property retention rate and the like, and is suitable for the field of electric wires and cables.

The application discloses an inorganic silicon modified water-based corrosion and rust prevention paint containing functional polysiloxane as well as a preparation method and application thereof. The paint contains, in parts by weight, 30-60 parts of a water-based hybrid acrylic emulsion, 1-15 parts of functional polysiloxane, 5-25 parts of inorganic silicon-based corrosion inhibitor filler, 10-40 parts of pigment and filler, 1-5 parts of water-based additive, and the balance of water. The functional polysiloxane is amino or silanol / alkoxy functionalized polysiloxane emulsion; and the inorganic silicon-based corrosion inhibitor filler is a combination of calcium ion exchange type silica gel pigment and calcium silicate. The inorganic hybrid emulsion, the functional polysiloxane and the inorganic silicon corrosion inhibitor pigment are compounded to endow the coating with excellent physical shielding property, active corrosion inhibition and surface hydrophobicity, realize fast drying, high hardness, excellent water and salt fog resistance and long-acting corrosion prevention performance, and especially can adapt to the harsh requirements of marine environment for the water-based corrosion prevention paint, which has important significance for the development of the shipbuilding industry.

The invention discloses a residual oil hydrotreating catalyst and a preparation method thereof, and belongs to the technical field of catalytic materials. The preparation method comprises the following steps: S1, mixing dolomite, cerous carbonate, a zirconium oxide precursor and a silicon dioxide precursor, drying and calcining to obtain a composite carrier, and performing in-situ pore forming by utilizing gas generated by decomposition of the dolomite and the cerous carbonate to form a mesoporous structure; s2, dipping the composite carrier in a modification liquid containing chitosan and mannuronic acid, and constructing a cross-linked network coating on the surface of the composite carrier through a Schiff base reaction to obtain a modified carrier; s3, dipping the modified carrier in a precursor solution containing a nickel source, a molybdenum source and a sulfur source, and performing adsorption, drying and roasting to obtain the catalyst. Through the synergistic effect of pore structure regulation and surface modification, the carrier with high porosity and suitable pore distribution is obtained, and meanwhile, high dispersion and stable loading of active metal components are realized. The catalyst shows excellent hydrodesulfurization, denitrification and demetallization performance in residual oil hydrotreatment.

The invention relates to the technical field of battery negative electrode materials, and provides a silicon-carbon negative electrode material, a negative electrode and a preparation method and application thereof. The method comprises the following steps: S1, preparing a silicon material A coated with elemental sulfur; s2, preparing a graphite oxide material B; s3, stirring and dispersing the elemental sulfur coated silicon material A and the graphite oxide material B in a polar solvent and a nonionic dispersant to obtain a mixed solution C; s4, adding a catalyst and a polymerization precursor into the suspension C; and S5, after filtering, washing with a polar solvent and deionized water, and drying to obtain the polymer-coated silicon carbon material negative electrode material. The surface of the nano silicon is coated with elemental sulfur, so that the cycle performance of the silicon negative electrode is improved; a polyamide coating layer formed on the surface of the graphite oxide material B through a catalyst and a polymerization precursor can effectively anchor the silicon nanoparticles on the surface of the graphite material, so that the volume expansion of the silicon nanoparticles in circulation is further reduced, and the circulation stability of the silicon-carbon negative electrode material is improved.

The present invention relates to the technical field of mercury removal in water bodies, and in particular to the preparation of a gel ball-loaded sulfur cluster multi-level pore MOFs composite material and its application in removing Hg(II) from water. The present invention provides a gel ball-loaded sulfur cluster multi-level pore MOFs composite material, comprising a framework material of sulfur cluster-modified multi-level pore UiO‑66, and a guar gum gel layer wrapped on the framework material; wherein the sulfur cluster-modified multi-level pore UiO‑66 comprises multi-level pore UiO‑66 with micropores and mesopores and sulfur active sites anchored on the multi-level pore UiO‑66. The provided gel ball-loaded sulfur cluster multi-level pore MOFs composite material has high mass transfer efficiency and high structural stability, and can realize efficient adsorption of Hg(II) in a complex water environment.

This invention provides an antistatic fabric based on modified acrylic fiber and its preparation process, belonging to the field of textile fabric technology. The process includes the following steps: first, preparing modified acrylic fiber and organosilicon quaternary ammonium salt modified CNW; then, mixing and stirring the modified acrylic fiber, DMF, and organosilicon quaternary ammonium salt modified CNW to obtain a spinning solution; mixing anhydrous ethanol and organosilicon quaternary ammonium salt modified CNW, and ultrasonically treating to obtain a dispersion; in a conjugate electrospinning device, feeding the spinning solution and dispersion into two sets of needles respectively, and electrospinning the spinning solution to form nanofibers under the action of a high-voltage electric field; feeding cotton yarn into the electric field region, causing the nanofibers to spirally wind around the surface of the cotton yarn and form a coating shell; and electrostatically spraying the dispersion to deposit the organosilicon quaternary ammonium salt modified CNW onto the surface of the coating shell; collecting and winding to obtain a fiber core-spun yarn, and weaving the fiber core-spun yarn to obtain the antistatic fabric. This invention can improve the antistatic performance of the fabric while also possessing certain antibacterial properties.

This utility model relates to the field of interventional tumor diagnostic and treatment medical device technology, and discloses an umbrella-shaped anchored tumor marker and its implantation system. The umbrella-shaped anchored tumor marker includes an umbrella-shaped anchoring system composed of multiple umbrella ribs with shape memory properties. The proximal ends of the ribs converge to form an axial central tube. The surface of the ribs has micro-barb structures formed by laser etching. The umbrella-shaped anchoring system remains in a contracted state at temperatures below body temperature and autonomously unfolds into a three-dimensional umbrella-shaped anchoring form at body temperature. In this utility model, the distal end of the umbrella ribs integrates a platinum-iridium alloy imaging tip with gradient stiffness (rigid at the proximal end and flexible at the distal end). The barbs are spaced along the length of the umbrella ribs. The shape memory alloy is in one state during delivery at room temperature and can self-unfold in vivo, achieving effective anchoring and imaging, thus aiding in tumor marking.

The application discloses a kind of Ce-La composite carrier load Cu-Ni bimetallic photo-thermal catalyst and its preparation method, for the defects of existing pure carrier oxygen vacancy concentration fixed, active metal is easy high-temperature agglomeration, catalytic activity and stability are insufficient, the Ce-La composite carrier is constructed by La doping modification in the application, and Cu-Ni bimetallic is formed 8Cu2Ni / aCebLa catalyst.La exists in the form of La-Ce-O solid solution, significantly improves the carrier oxygen vacancy concentration and activation capacity, while strengthening metal-carrier interaction, anchoring bimetallic particles to inhibit sintering, improve catalyst stability.

This invention relates to a C x N y This invention relates to a Pt@C fuel cell catalyst and its preparation method, belonging to the field of fuel cell catalyst technology. First, Pt@C is synthesized via a solvothermal reaction using ethylene glycol reduction. Then, it is mixed with a nitrogen-containing polymer material and cobalt chloride hexahydrate, and subjected to reduction in a reducing atmosphere, high-temperature treatment, carbon pyrolysis, and alloying to obtain porous nitrogen-containing carbon-coated Pt@C. x N y @PtCo / C catalyst. In the prepared catalyst, the porous coating layer significantly reduces the poisoning of catalyst particles by resin during fuel cell operation, improves cell activity, and extends cell life, exhibiting excellent activity and durability.

The utility model discloses a high pressure sand prevention hydraulic anchor for fracturing relates to hydraulic anchor technical field, the utility model discloses, including the anchor body, the surface of anchor body is opened with several groups of ladder hole, and the surface of anchor body and the opposite place of ladder hole is equipped with the mounting groove, the anchor claw is movably inserted in the ladder hole, the utility model discloses, through the sand prevention filter assembly of the slot in this anchor claw surface setting, can block the sand particle and enter the clearance between anchor claw and ladder hole, and then avoid the anchor claw to appear the jamming phenomenon when moving in the ladder hole, the anchor plate of mounting groove through screw fixed, anchor claw and anchor plate are movably inserted, and the spring between both can provide elastic force, so that when anchor claw can be withdrawn when no pressure or pressure reduces, realizes the anchor, and the rubber washer can enhance the sealing between anchor claw and ladder hole, guarantee the stability and reliability of anchoring, make the hydraulic anchor can effectively anchor the pipe column under the high pressure fracturing environment, prevent its displacement.

The invention relates to an ultrathin carbon nanosheet loaded high-entropy monatomic catalyst synthesized under assistance of molten salt as well as a preparation method and application of the ultrathin carbon nanosheet loaded high-entropy monatomic catalyst. The preparation method of the ultrathin carbon nanosheet loaded high-entropy monatomic catalyst comprises the following steps: providing ZIF-67 powder; coating with a dopamine solution, so as to obtain ZIF-67 (at) PDA powder; the obtained ZIF-67 (at) PDA powder is subjected to heat treatment, and a Co organic framework hollow dodecahedron coated with dopamine is obtained; then adding soluble metal salt and fused salt, and further pyrolyzing in a nitrogen atmosphere; and finally, carrying out acid washing and water washing to obtain the high-entropy monatomic catalyst loaded on the ultrathin carbon nanosheet. The preparation method of the ultrathin carbon nanosheet loaded high-entropy monatomic catalyst is energy-saving, adopts a molten salt process, and is mild in reaction condition; the prepared ultrathin carbon nanosheet is large in specific surface area, provides a larger reaction activity surface, and is applied to a lithium-sulfur battery, so that the lithium-sulfur battery shows excellent cycle performance.

The invention belongs to the technical field of petroleum and natural gas resource development, and particularly relates to an expansion metal open hole anchoring packer. The device comprises a central pipe, an open hole anchoring sealing assembly and a valve hoop. The open hole anchoring sealing assembly comprises an expansion metal anchoring sealing shell. A sealing cavity is formed between the expansion metal anchoring sealing shell and the central pipe; the upper end and the lower end of the expansion metal anchoring sealing shell are each sleeved with a set of expandable barrel type slips, and the center pipe is sleeved with the expandable barrel type slips. Through type slits are evenly distributed in the expandable barrel type slip. The valve hoop sleeves the central pipe and is in threaded connection with the central pipe; the valve hoop is provided with a channel which is communicated with the central pipe and is communicated with a sealing cavity between the central pipes of the expansion metal anchoring sealing shell; the expansion metal open hole anchoring packer is made of metal. The soft metal framework is expanded through hydraulic driving, meanwhile, other anchoring and sealing assemblies installed on the soft metal framework are linked to be expanded together to be attached to the stratum, and the anchoring and sealing functions are achieved.

This invention provides a self-grown nitrogen-doped carbon nanotube composite material based on a MOF template. The composite material uses a cobalt salt as the metal center and an organic compound as the ligand to synthesize a metal-organic framework template, followed by the autocatalytic generation of nitrogen-doped carbon nanotubes under an inert atmosphere. The preparation method includes: first, preparing a MOF template using a cobalt salt and organic ligand; then, introducing a nickel source onto the template surface via a hydrothermal reaction to obtain a composite precursor; finally, using dicyandiamine as both a nitrogen and carbon source, stepwise calcining the composite precursor to allow in-situ growth of MOF-template-derived carbon nanotubes, simultaneously forming a Ni / Co2N alloy to obtain the composite material. The composite material of this invention possesses a stable structure and excellent catalytic activity. Using it as a cathode catalyst in lithium-air batteries can effectively reduce polarization during the charge-discharge reaction process, improve the battery's rate capability and cycle performance, and the preparation process is relatively simple, showing promising application prospects.

This invention relates to the field of admixtures for roller-compacted concrete (RCC), and particularly to a polycarboxylate composite water-reducing agent for RCC and its preparation method. The agent is prepared by copolymerization of the following raw materials in parts by weight: 30-50 parts polyether macromonomer, 1-20 parts modified hydrophobic unsaturated monomer C, and 1-30 parts unsaturated carboxylic acid. The modified hydrophobic unsaturated monomer C is prepared from unsaturated hydrophobic carboxylic acid ester monomers, emulsifiers, solubilizers, and water, with the mass ratio of the unsaturated hydrophobic carboxylic acid ester monomers, the emulsifier, the solubilizer, and the water being (3.0-5.5):(0.5-1.0):(0.5-1.5):(2.5-3.5). Through the aforementioned progressive and synergistic mechanism, this invention systematically solves multiple technical challenges related to water retention, construction adaptability, and long-term durability while ensuring a high water reduction rate for RCC, achieving comprehensive optimization of overall performance.

The application discloses PVA@alkali lignin-based carbon aerogel as well as a preparation method and application thereof. 2+ Chelation is formed with the hydroxyl groups of PVA (polyvinyl alcohol) and AL (alkali lignin), the pore structure of the carbon aerogel is adjusted by adjusting the addition amount of the soluble nickel salt, the prepared carbon aerogel has more developed and richer pore structure, the electromagnetic shielding efficiency of the carbon aerogel reaches the best state, in addition, the soluble nickel salt is converted into nickel nanoparticles after high-temperature carbonization, the nickel nanoparticles are uniformly dispersed in the interior of the carbon aerogel, and the nickel nanoparticles also help to improve the electric conduction and magnetic conduction performance of the carbon aerogel, thereby further improving the electromagnetic shielding efficiency of the carbon aerogel.