12 results about "Cellular cement" patented technology

The application provides a cement-based zinc ion hybrid capacitor, a preparation method thereof and application of the capacitor in an energy storage device. The cement-based zinc ion hybrid capacitor comprises an active carbon positive electrode, a zinc foil negative electrode and a composite air-entraining mortar interlayer arranged between the two electrodes. The active carbon positive electrode is active carbon loaded on a carrier with good conductivity, and the carrier is any one of carbon-based materials such as carbon felt, carbon fiber and graphite plate or any one of foils, meshes and foams of metals such as stainless steel, copper, titanium and nickel and alloys thereof. The composite air-entraining mortar interlayer between the two electrodes is immersed in an electrolyte under negative pressure. The composite air-entraining mortar has interconnected pores, and ions are transmitted through the electrolyte in the pores and participate in electrode reactions. The application mainly provides a porous cement-based solid electrolyte based on a composite air-entraining technology and a structural electrochemical energy storage device, and the structural energy storage device can simultaneously have good energy storage characteristics and mechanical properties.

The invention relates to the field of cement films, in particular to a porous cement film and a preparation method thereof.The porous cement film is prepared from raw materials including a functional modified polymer, a dispersing agent, a binding agent, cement and water; the functional modified polymer is a polymer containing quaternary ammonium salt cations, a phosphate group and a chitosan structure, the functional structure is introduced through a chemical means, excellent hydrophilicity, antibacterial property, cation adsorbability and antistatic property are achieved, and meanwhile the problem of mechanical property difference caused by a traditional physical blending mode is avoided.

The invention discloses a preparation method and application of a cement-based compact and hydrophobic integrated material, and the preparation method comprises the following steps: firstly, directionally domesticating two bacillus Coriolis and pasteurization, and then putting the two bacillus Coriolis and pasteurization into a solution mixed with nutrient substances and a calcium source to prepare a repair solution; the preparation method comprises the following steps: culturing bacillus subtilis to form a biological membrane, carrying out ultraviolet radiation on the biological membrane, inactivating the bacillus subtilis while retaining the biological membrane, and finally culturing the inactivated bacillus subtilis liquid and the two domesticated bacillus liquid in a repair liquid to obtain the cement-based dense hydrophobic integrated material. The material is soaked in or sprayed on a cement-based test piece, and the compaction and hydrophobic integration of the cement-based material is realized by utilizing the successive recovery and the successive mineralization of the two microorganisms. According to the invention, the pore compactness and surface hydrophobic effect of the porous cement-based material are realized, so that the erosion of an erosion medium is greatly inhibited.

The application discloses a humidity-responsive porous cement-based sound-absorbing material and a preparation method thereof, and belongs to the technical field of porous sound-absorbing materials.The humidity-responsive porous cement-based sound-absorbing material is composed of the following components in proportion by weight: 100 parts of cement, 50 parts of water, 16-22 parts of amino acid modified starch-based copolymer, 3 parts of hydrogen peroxide, 1.2-6 parts of ferrous salt and 0.2 part of nano-alumina.The prepared material is no longer a static porous structure, but a system with humidity response capability.In a high-humidity environment, the polymer in the pore structure will rapidly absorb water and swell, thereby automatically and reversibly blocking the pore channel and forming a dynamic waterproof barrier, effectively preventing water from entering and avoiding freeze-thaw damage;when the environmental humidity decreases, the polymer in the pore loses water and shrinks, thereby reopening the pore channel and restoring the excellent sound-absorbing performance.

The invention discloses a humidity-responsive porous cement-based sound absorption material and a preparation method thereof, and belongs to the technical field of porous sound absorption materials. The humidity-responsive porous cement-based sound absorption material is prepared from the following components in parts by weight: 100 parts of cement, 50 parts of water, 16 to 22 parts of amino acid modified starch-based copolymer, 3 parts of hydrogen peroxide, 1.2 to 6 parts of ferrite and 0.2 part of nano aluminum oxide. The hydrogen peroxide, the ferrous salt, the amino acid modified starch-based copolymer and the nanometer aluminum oxide are added into cement paste, the prepared material is not of a static porous structure any more, but is a system with humidity response capacity, in a high-humidity environment, a high-molecular polymer in the porous structure can rapidly absorb water and swell, and the humidity response capacity is improved. Therefore, a pore channel is automatically and reversibly blocked, a dynamic waterproof barrier is formed, water invasion is effectively prevented, and freeze-thaw damage is avoided; and when the environment humidity is reduced, the polymer in the pore shrinks due to water loss, and the pore channel is opened again to recover the excellent sound absorption performance.

This invention relates to a low interfacial impedance cement-based zinc battery, its preparation method, and its application. The cement-based zinc battery includes a cement-based electrolyte, and positive and negative electrode material layers on opposite sides of the surface of the cement-based electrolyte are respectively fused using 3D printing technology. The specific steps are as follows: a porous cement-based structure is manufactured using cryogenic casting technology and then used after salt solution immersion treatment; the cement-based electrolyte and zinc (copper) electrodes are assembled in an inert gas-filled environment using a fixed laser scanner and 3D printing equipment, with copper as the positive electrode, the cement-based structure as the electrolyte, and zinc as the negative electrode. Compared with existing technologies, this invention directly fuses the electrode material onto the surface of the cement-based electrolyte, improving the interfacial stability between the electrode and the electrolyte, solving the problem of high interfacial impedance between the electrolyte and the electrode, improving the overall battery performance, and the process is simple.

The invention relates to the technical field of pavement structures, in particular to a macropore cement stabilized macadam pavement base composition which comprises a pavement base structure, the pavement base structure comprises a surface functional layer, a core framework layer and a bottom permeable adjusting layer, and the surface functional layer, the core framework layer and the bottom permeable adjusting layer are sequentially arranged from top to bottom. Interface bonding layers are arranged among the surface functional layer, the core framework layer and the bottom permeable adjusting layer, and the three layers are integrally connected through the interface bonding layers; the surface functional layer is made of a modified cement stabilized macadam material, the core framework layer is composed of discontinuous graded macadam and a low-dosage cement cementing material, and the bottom water-permeable adjusting layer is prepared by mixing porous cement stabilized macadam and a water-permeable reinforcing agent. The macropore cement stabilized macadam pavement base course composition provided by the invention has the advantages of high strength, high water permeability, crack resistance and durability.

To provide a method for forming a carbonated lightweight foamed cementitious hardened body capable of immobilizing carbon dioxide.SOLUTION: A method for forming a carbonated lightweight foamed cementitious hardened body includes the steps of: obtaining a cement-containing mixture by mixing cement and water for a cement-containing mixture which is a part of the water contained in the cement composition; obtaining bubbles by mixing a foaming agent, water for foaming agent-containing water which is a part of the water contained in the cement composition, and a gas; mixing the cement-containing mixture and the bubbles to obtain an unhardened cement composition; casting the unhardened cement composition to form a lightweight foamed cementitious hardened body; and spraying the lightweight foamed cementitious hardened body with carbon dioxide gas at a rate of 1 to 50 liters / minute and for 20 to 420 minutes within a period from 0.75 to 15 days of age to form a carbonated lightweight foamed cementitious hardened body.SELECTED DRAWING: None

The invention discloses a self-floating porous cement-based photo-thermal interface evaporator and a preparation method and application thereof. According to the evaporator, a unique layered porous structure with a photo-thermal evaporation layer, a supporting floating layer and a water conveying layer is constructed through an air pressure regulation and control bubble technology; as efficient and stable sea water desalination equipment, the evaporator can achieve the high evaporation rate of 3.13 kg.m <-2 >. H <-1 > and the evaporation efficiency of 92.22% under the illumination of one sun, and shows excellent mechanical strength and durability; besides, collaborative regulation and control of photo-thermal conversion, moisture delivery and thermal management are realized through a layered porous structure, salt deposition is effectively inhibited, long-term stable evaporation is realized, and the material shows remarkable large-scale seawater desalination application potential in a complex environment.

This invention belongs to the field of bridge deck pavement technology, specifically relating to a self-healing drainage pavement structure for concrete bridge decks and its construction method. The key technical points are as follows: The pavement structure, from bottom to top, includes: a cement concrete slab base layer, a wet-bonding resin layer, a self-healing porous concrete pavement layer, a high-temperature reactive bonding layer, and a self-healing PA-10 pavement layer. The self-healing porous concrete pavement layer comprises concrete mix and microbial-loaded ceramsite. The microbial-loaded ceramsite is prepared by carbonizing and modifying ceramsite and then loading it with Bacillus subtilis. This invention incorporates pre-loaded microbial ceramsite into a porous cement concrete structure to achieve self-healing of cracks. Combined with the upper large-pore self-healing PA-10 structure, it meets the air and moisture requirements of the microorganisms, effectively enhancing the depth of the microbial self-healing effect, while simultaneously achieving synergistic consistency between drainage and self-healing functions of the upper and lower layers.

The application relates to a kind of etching method for regulating porous cement-based diaphragm and its preparation method and application, and belongs to the technical field of battery diaphragm.The preparation method flow of the cement-based diaphragm includes cement neat paste test piece forming, polishing, etching and drying.The etching is to dissolve the composition of cement neat paste itself by using acid solution, improve the porosity and pore connectivity of cement neat paste, expand the transmission channel of ions, and then improve the ion conductivity of cement neat paste.The prepared cement-based diaphragm can be applied to super capacitor, hybrid super capacitor and battery.The energy storage device includes tab, positive electrode, negative electrode and cement-based diaphragm after etching and impregnated with electrolyte between two electrodes.The preparation process of the cement-based diaphragm is simple and reasonable, convenient to operate, can improve the porosity of cement neat paste, provide more channels for the transmission of ions in its interior, thereby improve the ion conductivity of cement neat paste, so that it can have better energy storage performance when used as diaphragm.

The application discloses a preparation process of a porous cement-based material with electromagnetic shielding and compatible infrared protection, which comprises the following steps: (1) adding an aqueous phase into an oily phase, stirring to disperse, then performing a polymerization reaction under the conditions of heating and stirring, and then separating a solid product to obtain a spherical high-water-absorption organic polymer after washing; (2) adding the spherical high-water-absorption organic polymer into a liquid phase to soak, then adding obtained gel material into a magnetic nanoparticle dispersion medium containing a surfactant, stirring to react, and then separating a solid product, which is washed to obtain a spherical core-shell structure magnetic nanoparticle modified high-water-absorption organic polymer; and (3) adding the high-water-absorption organic polymer into a cement-based material, curing after preparing a slurry, and thus obtaining the porous cement-based material, which not only has a good electromagnetic shielding effect, but also significantly reduces heat radiation generated in an electromagnetic wave consumption process, reduces infrared detectability, and makes the cement-based material have better concealment.