36results about How to "Strong electrostatic adsorption" patented technology

A waste heat boiler of a shot-cleaning type glass kiln mainly comprises a boiler heated surface, a boiler smoke passage and a boiler dust remover, wherein the boiler dust remover is a shot-cleaning device comprising at least one shot scattering mechanism which is installed above the heated surface of the waste heat boiler and capable of scattering shots on the heated surface of the waste heat boiler and has impact function, a shot collecting mechanism installed below the heated surface of the waste heat boiler and used for collecting the shots which fall off after impacting the heated surfaceof the waste heat boiler, and a shot transporting mechanism connected with the shot collecting mechanism and capable of continuously lifting the collected shots to the shot scattering mechanism; the shot scattering mechanism is installed above the heated surface of the waste heat boiler and comprises a scatter collecting hopper where the shots flow downwards and a scattering ball or cone positioned below the scatter collecting hopper; and the waste heat boiler has the following characteristics: the shots can be used circularly, the structure is simple, the investment and operation costs are low and the dust removal effect is good.

The invention discloses an antifouling antibacterial ceramic glaze, which is prepared from, by weight, 50-60 parts of basic glaze slurry, 7-9 parts of calcium oxide, 3-5 parts of calcium carbonate, 4-6 parts of aluminum hydroxide, 4-5 parts of an antibacterial agent, 5-7 parts of nano zinc oxide, 2-3 parts of sodium hexametaphosphate, 8-10 parts of a phosphoric acid aqueous solution and 2-3 partsof an yttrium nitrate aqueous solution. The invention further discloses a preparation method of the antifouling antibacterial ceramic glaze. By the adoption of the antifouling antibacterial ceramic glaze and the preparation method thereof, the antibacterial agent is added into basic glaze, the antibacterial agent can be uniformly distributed in the glaze, and sintered ceramic can continuously andslowly release silver ions in water, so that a continuous antibacterial effect is achieved; the phosphoric acid aqueous solution and the yttrium nitrate aqueous solution are adopted in the glaze, so that the ceramic sintered by the glaze has good hydrophobicity, dirt cannot be firmly attached to the surface of the coating, the dirt can be washed away when water drops flow past a surface layer, andan antifouling effect is achieved; and a preparation process is simple, the conditions are easy to control, and production cost is low.

The invention discloses a preparation method of hemp stalk activated carbon, belonging to the technical field of the preparation of activated carbon. The preparation method comprises the following steps: roasting hemp stalks under the protection of a nitrogen atmosphere, cooling to room temperature so as to obtain hemp stalk carbon, and grinding the hemp stalk carbon to a particle size below 300 meshes; mixing granulated hemp stalk carbon with tetramethylammonium hydroxide, and heating and stirring to realize pretreatment, so as to obtain pretreated hemp stalk carbon; mixing the pretreated hemp stalk carbon with sodium ethoxide, adding water, stirring, carrying out shock treatment under an ultrasonic wave condition, roasting the obtained hemp stalk carbon under the protection of the nitrogen atmosphere, and naturally cooling to room temperature; and activating, soaking the hemp stalks into a cationic guar gum solution, washing by virtue of distilled water until the hemp stalks are neutral, drying, grinding, and sieving by virtue of a 80-200-mesh sieve, so as to obtain the hemp stalk activated carbon. The hemp stalk activated carbon prepared by virtue of the preparation method has relatively high adsorptive property.

The invention relates to titanium dioxide doped carbon nitride, and a preparation method and application thereof. The preparation method of the titanium dioxide doped carbon nitride comprises the following steps: adding carbon nitride into alkaline liquid and performing ultrasonic treatment until the carbon nitride is dispersed uniformly to obtain first dispersing liquid; adding titanium dioxide into the first dispersing liquid and performing ultrasonic treatment until the titanium dioxide is dispersed uniformly to obtain second dispersing liquid; and performing hydrothermal treatment on the second dispersing liquid to obtain the titanium dioxide doped carbon nitride. The titanium dioxide doped carbon nitride prepared by the preparation method of the titanium dioxide doped carbon nitride is applied to a lithium sulfur battery diaphragm, the carbon nitride and the titanium dioxide can exert a good synergistic effect and have strong adsorption effect on sulfur, the shuttle effect of polysulfide is inhibited, and redox reaction of the sulfur is benefited, so that the specific capacity and the cycling stability of the battery are improved.

The invention provides a preparation method of modified mussel shells. The preparation method comprises the following steps: S1, preparing magnetic nanoparticles; S2, carrying out pretreatment of mussel shells; S3, preparing magnetic mussel shells: wherein respectively adding the magnetic nanoparticles and ammonia water into deionized water, heating to a reaction temperature, dropwise adding a silane coupling agent, adding mussel shell powder, reacting, cooling to room temperature, and carrying out magnet separation for later use; and S4, preparing the modified mussel shells: wherein adding lactic acid, a silane coupling agent and the magnetic mussel shells into deionized water, uniformly stirring, slowly dropwise adding a catalyst solution, stirring and reacting at room temperature, washing an obtained product with the deionized water and absolute ethyl alcohol for three times respectively, magnetically separating, drying and grinding to obtain the modified mussel shells. The modifiedmussel shells have good adsorption performance on methylene blue, modification conditions are simple, operation is convenient, and high operability is achieved. The waste mussel shells are used as raw materials, so that the method has good environmental benefits and can generate better economic benefits.

The invention provides a cationic polymer polyelectrolyte which is high in dielectric constant and ionic conductivity and a manufacturing method for the cationic polymer polyelectrolyte and belongs to the field of macromolecular materials. The cationic polymer polyelectrolyte comprises the following steps: by taking a fluorine-containing ferroelectric polymer polyvinylidene fluoride (PVDF) and a copolymer of the polymer as raw materials, grafting a polycationic side chain through atom transfer radical polymerization; and carrying out settling, washing and drying to obtain a product. The cationic polyelectrolyte and a carbon material are compounded to prepare a super capacitor electrode which can realize good electrochemical energy storage. The cationic polyelectrolyte manufactured according to the technical scheme can effectively replace common fluorine-containing polymers in the super capacitor, so that the cationic polyelectrolyte is suitable for processing a high-performance super capacitor.

The invention belongs to the technical field of ore dressing, and specifically relates to an application for a gemini quaternary ammonium salt collecting agent. The gemini quaternary ammonium salt collecting agent provided by the invention is applied to scheelite or gangue mineral calcite flotation. The gemini quaternary ammonium salt collecting agent is hexane-1,6-didodecyl dimethyl ammonium bromide. The gemini quaternary ammonium salt collecting agent, namely the hexane-1,6-didodecyl dimethyl ammonium bromide provided by the invention is low in toxicity and free of pollution, has strong electrostatic adsorption, hydrogen bond adsorption and physical adsorption with scheelite or gangue mineral calcite, has high selectivity for scheelite and gangue mineral calcite, has wide flotation applicable pH range and does not need to be compounded with a collecting agent. Test results show that the gemini quaternary ammonium salt collecting agent provided by the invention is used for mineral flotation collection, can reach a scheelite recovery rate of 97.51% and a calcite recovery rate of only 8.24%, and has stable and highly-efficient selectivity and good flotation separation effect.

The invention discloses a hyperbranched polysulfide polyamine hydrochloride and a preparation method thereof. The present invention affects the primary amine groups in the reaction system by adjusting the addition method of the sodium methoxide solution, thereby changing the process of the entire chemical reaction, and the competition relationship between the primary amine group and the secondary amine group and the addition reaction of the epoxy group, thereby regulating The degree of branching and the number of useful functional groups of hyperbranched polysulfide fungicides. Use ultraviolet light to trigger allyl glycidyl ether and cysteamine hydrochloride solution in equimolar amounts to obtain the intermediate compound, then slowly add sodium methoxide solution, react at 60°C for 8-24 hours, and obtain hyperbranched polysulfide polyamine Hydrochloride fungicide. Among them, under stirring conditions, slowly dropwise add 1/2 molar sodium methoxide solution of the intermediate to obtain a product with a branching degree of 0.92 and a molecular weight distribution coefficient of 1.24. The periphery of the molecule contains 15.9 quaternary ammonium salt groups, and its aqueous solution has the highest bactericidal efficiency.

The invention relates to a magnetic sulfonic functional COFs material, a preparation method and application thereof. The COFs material includes a covalent organic framework formed by Schiff base condensation reaction of 2, 4, 6-triformylphloroglucinol and 2, 5-diaminobenzenesulfonic acid, and magnetic nanoparticles for modification on the covalent organic framework, wherein the magnetic nanoparticles are amino functionalized Fe3O4/SiO2 core-shell nanoparticles. The aperture confinement effect of the COFs material can exclude adsorption of protein and other macromolecules in a urine matrix. Thesulfonic group on the COFs material has strong electrostatic adsorption effect with the amino of an aromatic amine compound, and can achieve efficient adsorption of the aromatic amine compound and prevent adsorption of an electronegative compound. The benzene ring structure on the COFs material and the benzene ring of the aromatic amine compound have strong Pi-Pi interaction. The COFs material realizes selective efficient enrichment of trace aromatic amine compound in a complex matrix.

The invention relates to the field of filter materials and provides an anti-haze light-transmitting stealth gauze. The anti-haze light-transmitting stealth gauze comprises a gauze and a nanofiber layer supported on the surface of the gauze, wherein the nanofiber layer is formed by supporting a nanofiber spinning solution on the surface of the gauze through electrostatic assisted jet spinning. Theanti-haze light-transmitting stealth gauze has high light transmittance, good ventilation and efficient filter performance simultaneously, PM2.5 and PM10 are filtered efficiently, light transmittanceand ventilation of the gauze are guaranteed, and the stealth gauze integrates air filtering, light transmittance and ventilation.

The invention relates to a super-infiltration antiviral protective mask and a preparation method thereof, the inner side of a skin-friendly layer is coated with a nano adsorption disinfection super-hydrophilic protective coating, and the outer side of an antibacterial layer is coated with a nano super-droplet-resistant antiviral super-hydrophobic protective coating; the nano super-droplet-resistant antiviral super-hydrophobic protective coating is prepared from the following components: a polar group fluoropolymer, water-based fluorocarbon resin, inorganic nanowires, tetraethoxysilane, absolute ethyl alcohol and ammonia water, the inner side surface nano adsorption disinfection super-hydrophilic protective coating comprises the following components: chitosan quaternary ammonium salt and waterborne polyurethane resin. Due to the fact that the outer side face of the mask is coated with the nanometer super-anti-droplet antiviral super-hydrophobic protective coating, adhesion of virus-containing droplets can be strongly repelled in a long-acting mode; due to the fact that the inner side face of the mask is coated with the nanometer adsorption disinfection super-hydrophilic protective coating, the nanometer adsorption disinfection super-hydrophilic protective coating has extremely high surface energy and extremely strong electrostatic adsorption effect, adsorbed viruses and droplets are in full-spreading contact, and the inactivation rate of antibacterial active matter on the viruses is greatly increased.

The invention relates to the technical field of lithium batteries, in particular to a positive electrode composite material and a preparation method thereof, a positive electrode and a lithium battery. The positive electrode composite material comprises a lithium iron phosphate nanosheet growing along an ac surface in a preferred orientation manner and a ternary positive electrode material coated with the lithium iron phosphate nanosheet. The positive electrode material has high specific energy, high chemical stability and thermal safety. The invention further provides a preparation method of the positive electrode composite material, a positive electrode comprising the positive electrode composite material, and a lithium battery.