20results about How to "High charge density" patented technology

The invention discloses an additive for inhibiting mud powder in machine-made sand and a preparation method of the additive, and belongs to the technical field of building materials.The additive is prepared from a mud blocking component A, a sacrifice component B and a retarding component C. The mud blocking component A plays a role in neutralizing negative charges on the surfaces of mud powder particles and can separate water from clay, and the sacrifice component B plays a role in retarding the mud powder particles; water adsorbed by the layered structure of the clay is reduced, so that free water in the cement paste is increased, and the water demand of the concrete and the adsorption of the clay powder to an additive are reduced. The molecular structure of the sacrifice component B has the characteristics of short side chain, high acid-ether ratio, high charge density and small molecule, and can be adsorbed and inserted in a layered structure of mud powder more quickly than a conventional polycarboxylic acid water reducing agent, so that the adsorption of the mud powder on the water reducing agent is reduced. The retarding component C can form a complex with calcium ions in a solution, so that precipitation of calcium hydroxide is inhibited, hydration of cement is delayed, plasticity retaining property of concrete is improved, cement particle distribution can be improved, and concrete shrinkage caused by mud powder is reduced.

The present application relates to a kind of demulsifier for oily wastewater and its preparation method, belong to oily wastewater treatment technical field.The raw material component of the demulsifier includes 15-25wt% iron salt, 10-20wt% aluminum salt, 5-10wt% auxiliary salt and the balance deionized water;Auxiliary salt is the complex system of magnesium salt and zirconium salt;The demulsifier is complexed into intermediate by its raw material component, then polymerized at the temperature of ≤30 ℃.The synergistic effect of iron ion, aluminum ion, magnesium ion and zirconium ion, the prepared demulsifier keeps the oil removal rate at 95% or more in the range of temperature 5-40 ℃, salinity 0.5%-5%, pH 4.0-10.0, COD removal rate is more than 85%, and the performance stability is significantly better than traditional demulsifier, with high demulsification efficiency, low sludge yield, strong adaptability, green environmental protection, low cost and wide application scenarios, with high market value.

The application provides a clay anti-swelling agent composition and a preparation method and application thereof, and the clay anti-swelling agent composition comprises, in mass fraction, 5-20 wt% of polyether amine, 15-30 wt% of an organic ammonium salt, 8-16 wt% of a low-molecular-weight cationic polymer, 10-20 wt% of a polyvinylamine and 5-10 wt% of an organic acid, and the rest is water; the clay anti-swelling agent composition has the advantages of good anti-swelling effect, long-acting effect, prevention of clay particle migration, good temperature resistance, non-increase of formation water salinity, increase of formation permeability and the like, the anti-swelling rate is greater than or equal to 90%, the anti-swelling rate is greater than or equal to 92% after aging at 350 DEG C, the water washing resistance rate is 100%, the core permeability recovery rate is greater than or equal to 75%, and the core permeability retention rate is greater than or equal to 85%.

The present invention relates to the technical field of adhesive films, and in particular to an acid-removing EVA film for solar cells and a preparation method thereof, comprising the following raw materials: EVA resin, a main cross-linking agent, an auxiliary cross-linking agent, an amino anti-PID composite filler, a composite hydrotalcite acid scavenger, a lubricant, an ultraviolet absorber, a light stabilizer, an antioxidant and a coupling agent. The present invention inserts phosphate ions between the layers of magnesium-aluminum hydrotalcite and loads nano titanium dioxide particles on the surface of magnesium-aluminum hydrotalcite, so that the composite hydrotalcite acid scavenger can effectively adsorb and capture acetic acid released from the EVA film, thereby achieving the purpose of effective acid removal and acid suppression; through the preparation and amino modification of the anti-PID composite filler, the amino anti-PID composite filler can improve the mechanical properties and anti-PID ability of the EVA film, and can also capture and neutralize the free acetic acid in the EVA film into salt, further playing the role of acid removal, and improving the aging resistance of the EVA film.

This invention relates to the fields of adsorbent preparation and heavy metal remediation technology, and particularly to an amorphous iron-magnesium-aluminum silicate, its preparation method, and its applications. This invention utilizes molten salt-mediated ion exchange and lattice recombination under high-temperature conditions to completely and uniformly transform various silicate minerals from complex and inconsistent natural clay minerals into a non-naturally formed, structurally homogeneous, and stable amorphous iron-magnesium-aluminum silicate. This overcomes the limitation of traditional adsorbents having a narrow applicable concentration range, exhibiting extremely strong removal capabilities for heavy metal ions from high to low concentrations, achieving deep purification. Based on the theory of "increasing configurational entropy," this invention proposes the design of a silicate network framework with dense, highly active sites and multiple metals, breaking through the traditional approach of "simple modification" of natural clay minerals. It fundamentally reconstructs their material composition, providing a material that combines low cost with revolutionary adsorption performance.

The invention provides a thermal probe charging nursing method. According to the method, the defects formed at the position of the hot probe at the charging opening are solved in the charging nursing process. According to the formation mechanism of shrinkage joints and loose charging defects in the thermal probe charging nursing process, targeted treatment measures are taken, and the charging quality problem of the product in the thermal probe nursing process is solved. The problem of reworking of the thermal probe charging care product caused by charging defects is avoided, and the problems of safety and product quality reduction caused by reworking are eliminated. In the process of solving the problems of shrinkage joints and loose charging defects in the thermal probe charging nursing process, a copper drill rod or a wood ruler is adopted for shifting in solid-phase components settled at the bottom of the charging funnel, and a way for improving the charging density is found for product charging.

The application discloses a flocculant for coking wastewater and a preparation method and application thereof, and comprises the following raw materials in parts by weight: 1-5 parts of polydimethyl diallyl ammonium chloride and 6-12 parts of a composite, wherein the composite is prepared from kaolin loaded N-succinyl-O-carboxymethyl chitosan and konjac glucomannan. The application aims at solving the technical problem that coking wastewater cannot reach the discharge standard.

The application relates to the technical field of high-molecular fiber sensing, in particular to a high-toughness TPU / ANF / inorganic nanoparticle composite nanometer friction positive electrode material and a preparation method thereof. The preparation method takes TPU as a base main material, does not depend on a chemical cross-linking method, and realizes flexible adaptation of a complex deformation scene by virtue of excellent stretchable deformation performance and flexible characteristics of the TPU. Meanwhile, aramid nanofiber (ANF) is introduced as a reinforcing phase, the high-strength and high-modulus characteristics of the aramid nanofiber are utilized to improve the stress and strain capacity and mechanical stability of the base, the aramid nanofiber can lock the molecular structure in the TPU, and the aramid nanofiber can inhibit significant shrinkage of the material when the temperature is increased, so that the aramid nanofiber has the dual functions of mechanical enhancement and size stability, and the reliability of a generator is ensured.

The present invention discloses a high-strength white facing concrete and a preparation method thereof, and relates to the technical field of building materials; the concrete comprises white cement, white high-activity mineral admixture, limestone machine-made sand, limestone crushed stone, water, viscosity-reducing admixture, carbonation inhibition auxiliary agent and functional defoamer. The present invention also provides a preparation method of the above concrete. The concrete of the present invention has good aesthetic and decorative effects, eliminates the processes of coating and facing, meets the needs of low-carbon green development, and effectively solves the problems of concrete bubbles, inconsistent color, voids, cracks and poor carbonation resistance in the prior art.

The invention discloses an additive composition for coal water slurry, and belongs to the technical field of coal chemical industry. The additive composition for the coal water slurry, provided by the invention, comprises lignosulfonate, inorganic salt and an acid-base regulator. According to the invention, lignin is grafted and sulfonated, such that lignosulfonate with high relative molecular mass is prepared. The specific preparation method comprises the following steps: by taking lignin as a raw material, reacting with formaldehyde, acetone and sodium sulfanilate under normal pressure, and introducing a sulfonated branched chain into a lignin molecular structure, so as to prepare the high-sulfonation-degree comb-shaped branched-chain lignosulfonate with the molecular weight of 10000-50000 Da. The lignosulfonate, the inorganic salt and the acid-base regulator are added into the coal mill and mixed with the coal or / and the coal coke or / and the petroleum coke and the water for grinding to prepare the coal water slurry, so that the flowability and the stability of the coal water slurry are improved, the viscosity of the coal water slurry is reduced, and the concentration of the coal water slurry is improved.

The invention relates to an electrostatic chuck and semiconductor equipment. The electrostatic chuck comprises an insulating substrate and an electrostatic electrode, the electrostatic electrode comprises a central electrode and an edge electrode; the central electrode is positioned in the central area of the insulating substrate; the peripheral side of the central electrode is surrounded by the edge electrode; wherein the conductive polarity of the central electrode is opposite to that of the edge electrode; the area of the central electrode is different from that of the edge electrode. According to the invention, on the premise of ensuring the uniformity of ion implantation, the problem of non-uniform distribution of electrostatic adsorption force on the surface of the wafer caused by wafer warping can be improved, and the aggravation trend of the warping phenomenon of the wafer can be inhibited, so that the effective control of the bending degree of the wafer is realized, and the improvement of the yield of wafer products is facilitated.

The application discloses a kind of composite adsorption materials for water environment purification treatment and preparation method thereof, belong to water treatment functional material technical field.The composite adsorption material uses discarded cow hair as matrix, and the surface of matrix is formed by dopamine self-polymerization and co-deposition with metal composite powder to form polydopamine / metal composite powder coating, and polyallyl glycidyl ether is grafted on the coating by surface-initiated atom transfer radical polymerization, and finally, L-arginine or 2,4-diamino butyric acid is used for ring-opening modification.The metal composite powder is mixed by nano TiO2, nano ZrO2 and nano CeO2 in a specific ratio.The material is modified by zwitterion to give pH responsiveness, and can selectively adsorb anionic or cationic dyes under different pH conditions, and after adsorption saturation, the dyes can be eluted and recovered with dilute acid or dilute alkali, and photocatalytic regeneration can be realized by sunlight irradiation.

The present invention relates to the technical field of garment accessories processing, and discloses a low shrinkage wrinkle-resistant nylon cloth, a preparation method thereof, and an application in a zipper. The preparation method of the low shrinkage wrinkle-resistant nylon cloth comprises the following steps: modifying graphene to obtain functionalized graphene; reacting lactic acid with N,N-dimethyldipropylenetriamine to obtain an intermediate, and then reacting with chloropropane to obtain an organic antistatic agent; combining functionalized graphene with an organic antistatic agent to obtain a composite antistatic agent; first modifying nylon 6, and then treating it with a composite antistatic agent to obtain a composite modified nylon 6; the composite modified nylon 6 is melt-spun, and then spun into yarn, and the yarn is dehydrated after heat setting treatment to be woven into a grey cloth; the grey cloth is finished and dyed by a composite finishing liquid, and then product setting and pre-shrinking finishing are performed to obtain a low shrinkage wrinkle-resistant nylon cloth. The low shrinkage wrinkle-resistant nylon cloth of the present invention has excellent wrinkle resistance and antistatic properties, and a low shrinkage rate.

The invention provides a solid-waste-based high-fluidity filling material and a preparation method thereof. The solid-waste-based high-fluidity filling material comprises 40-60 parts of Bayer process red mud, 40-60 parts of fly ash, 10-20 parts of desulfurized gypsum, 3-5 parts of a pumping agent and 30-60 parts of water, and the pumping agent is prepared by compounding an organosilicon polycarboxylic acid water reducer, polymaleic acid and water-soluble cellulose according to the mass ratio of (3-5): (3-5): 10; the organic silicon polycarboxylic acid water reducer is formed by copolymerizing unsaturated carboxylic acid monomers, polyethylene glycol monoallyl ether and unsaturated silane monomers in a mass ratio of (1.5-2): (2-4): (0.8-1) in the presence of a chain transfer agent. A hydrophobic area is formed by the silane monomer, the electrostatic repulsion effect between solid waste gel particles with the water reducing agent adsorbed on the surfaces is enhanced through structural balance of the hydrophobic area and the hydrophilic area, the situation that the water reducing agent is wrapped by the solid waste gel particles is prevented, and the fluidity of slurry and the strength of the filling material are improved.

The invention relates to the technical field of oilfield chemistry, in particular to a urea cation homopolymer ionic liquid clay stabilizer and a preparation method thereof.The urea cation homopolymer ionic liquid clay stabilizer is formed by compounding urea and a cation homopolymer containing cation and hydroxyl repetitive units, chloropropene is added into a suspension liquid formed by mixing N, N-dimethylethanolamine and urea for a reaction, and the ionic liquid clay stabilizer is obtained. And adding a required amount of initiator into the ionic liquid A, and carrying out a reaction to obtain the urea cation homopolymer ionic liquid clay stabilizer. The urea cation homopolymer ionic liquid clay stabilizer contains strong polar molecules of a plurality of cations and hydroxyl groups, and is high in charge density, strong in washing resistance and remarkable in clay expansion prevention effect.

The present invention relates to the technical field of preparation of surfactant for AKD, and specifically to a method for preparing an emulsifier for AKD with high charge density, comprising the following steps: S1, preparing an aqueous solution of cassava starch; S2, adding an oxidant to the aqueous solution of cassava starch, adjusting the pH value of the system, and keeping the temperature at a first temperature for reaction; S3, after the reaction of step S2 is completed, heating to a second temperature, adding alkali solution, heating to a third temperature, adding a cationic etherifying agent, and keeping the temperature for reaction; S4, adding acid to the reaction system in step S3 to terminate the reaction; S5, adding a dispersant to the reaction product of step S4, heating to a fourth temperature, cooling after keeping the temperature, and obtaining a finished product. The emulsifier for AKD prepared by the present invention has a charge density of 179-187meq / g, enhances the bonding strength with AKD particles, has a good emulsification effect, is simple in preparation method, and is suitable for industrial-scale production.

This invention belongs to the field of wastewater treatment technology, specifically relating to a reagent for treating mineral processing wastewater and its preparation method. The reagent comprises the following components by weight: 5-15 parts flocculant, 10-20 parts coagulant aid, 8-12 parts nonionic surfactant, 10-15 parts anionic surfactant, 1-3 parts foaming agent, 10-15 parts starch, and 20-30 parts water. This invention utilizes carbon nanotube-acetyloxyoxime acid complex-modified polyacrylamide as a flocculant, and combines it with samarium-doped polyaluminum magnesium chloride as a coagulant aid, to synergistically achieve the efficient and simultaneous removal of heavy metal ions, COD, and suspended solids.

The invention relates to the technical field of sewage treatment flocculants, in particular to a coal washing water composite flocculant as well as a preparation method and application thereof, and the flocculant is prepared from polyaluminum chloride, aluminum potassium sulfate dodecahydrate, modified silica, plant ash, modified anionic polyacrylamide and sodium chloride. The inorganic flocculant A and the organic flocculant B are matched for use, so that coal particles in coal washing water of different types and different particle sizes can be effectively settled, fine coal particles are further adsorbed and decolorized through the matching effect of the modified silica and the plant ash, the turbidity of supernate can be effectively reduced, sodium chloride can sterilize and remove dust, and the water quality is improved. The dissolution of the modified anionic polyacrylamide can be effectively promoted. Experiments prove that the composite flocculant has more remarkable effects on various types of coal washing water of coal mines in different regions than conventional flocculants.

Embodiments of the present invention include batteries and other charge storage devices incorporating sheets and / or powders of silica fibers and methods for producing such devices. The silica fibers can be formed by electrospinning a sol-gel produced with a silane oxide reagent such as tetraethyl orthosilicate, an alcohol solvent, and an acid catalyst.

The present invention discloses an artificial electret and an electret antenna. The artificial electret includes: a first electrode for connecting to the positive electrode of a power supply; a second electrode for connecting to the negative electrode of a power supply; a metal layer, one of two adjacent metal layers is connected to the first electrode, and the other of the two adjacent metal layers is connected to the second electrode; and a dielectric layer, a dielectric layer is arranged between two adjacent metal layers. The electret of the present invention includes a positive electrode plate, a negative electrode plate, multiple metal layers and multiple high-dielectric dielectric layers. The high-dielectric dielectric layer is located between the metal layers, providing the metal layers with anti-breakdown capability, thereby increasing the amount of charge stored in the metal layers. When the electret rotates, the ability to generate a time-varying electric field in space can be achieved. A large amount of charge is provided to the multiple metal layers through the positive electrode plate and the negative electrode plate. The surface charge density is more than 20 times that of the passive electret under the same size, and the multi-layer structure can increase the electric dipole moment, greatly improving the communication distance.