12results about How to "Reduce electrostatic repulsion" patented technology

This invention discloses a compound traditional Chinese medicine powder inhaler for respiratory tract infections and its preparation method, relating to the field of pharmaceutical formulation technology. The compound traditional Chinese medicine powder inhaler for respiratory tract infections is composed of polysaccharide composite gel microspheres, forsythia, scutellaria, honeysuckle, and isatis root. The polysaccharide composite gel microspheres are composed of seaweed sulfated polysaccharide, lentinan, calcium chloride, and curcumin. Seaweed sulfated polysaccharide, lentinan, curcumin, and calcium chloride cross-link to form a three-dimensional network spherical structure, improving the particle morphology and flowability of the micropowder. Furthermore, due to its good hygroscopic and moisturizing properties, it competitively reduces the moisture absorption of the micropowder, preventing aggregation and further improving flowability. In addition, the gel microspheres have excellent adhesion, adhering to the infection site after entering the respiratory tract, reducing expulsion losses due to respiration, maintaining an effective drug concentration at the infection site, and improving therapeutic efficacy.

The application provides a shield balancing mud for a shield machine and a preparation method thereof, and belongs to the field of shield tunnel engineering. The shield balancing mud comprises the following raw materials: modified clay base material: 100 parts, composite flocculating agent: 6-15 parts, tackifying water-retaining agent: 1.5-4 parts, water-dispersing agent: 0.5-2.5 parts, organic crosslinking agent: 0.3-1.2 parts, thixotropy adjusting agent: 0.2-1.5 parts, and pH adjusting agent: 0.5-4 parts. In the application, the high-activity modified clay is used as a skeleton, the inorganic flocculation network is used to provide a dense structure resistant to water erosion, the borax-cellulose reversible crosslinking is used to realize the thixotropic property, the polyacrylamide is used to enhance the water-dispersing resistance, and the thixotropy adjusting agent is used to balance the dispersion and flocculation, so that the mud material simultaneously has excellent water-dispersing resistance and reversible thixotropy in a high-water-pressure water-rich stratum.

The application discloses a composite flocculant based on aluminum chloride and a preparation method thereof, and belongs to the technical field of flocculant preparation, and is used for solving the technical problem that the stability and flocculation performance of the flocculant need to be further improved in the prior art; the branched polymer containing polycarboxyl groups is prepared by the reaction of tris(2-aminoethyl)amine and pyromellitic dianhydride, and the taurine groups are introduced to obtain the sulfobranched polycarboxyl polymer; the titanium phosphorus silicon aminopropyl composite is synthesized by using the sol-gel method, and the inorganic-organic network combination is realized; the polyimidazolium-hydroxy ether is obtained by the reaction of imidazole, epichlorohydrin and bisphenol A diglycidyl ether; the composite flocculant is formed by the reaction of the three under the acidic condition, the composite flocculant combines the polycarboxyl groups, the sulfonic acid groups, the imidazolium groups and the inorganic-organic skeleton, has high charge density, good adsorption and bridging performance, can rapidly form stable flocs, and can effectively remove the suspended particles and organic pollutants in water.

The application discloses a salt-resistant water-non-dispersible material for oil well cement and a preparation method thereof. The salt-resistant water-non-dispersible material for oil well cement comprises the following components in the form of weight parts: 100 parts of N,N-dimethyl acrylamide, 3-6 parts of acrylic acid, 10-20 parts of 2-acrylamide-2-methylpropanesulfonic acid, 5-15 parts of a cyclic monomer, 0.1-0.4 parts of a branching agent, 5-15 parts of a cationic monomer, 0.3-3 parts of a crosslinking agent and 400-500 parts of water. The salt-resistant water-non-dispersible material prepared by the application has good salt resistance, can significantly improve the anti-dispersion performance of the cement slurry when used in a salt water and sea water cement slurry system with a NaCl content of 18 wt% or less, and has excellent rheological performance.

The invention relates to a quick-washing residue-free laundry detergent. The quick-washing residue-free laundry detergent is prepared from the following raw material components: a double-block nonionic surfactant, an anionic surfactant, a biological enzyme compound, a thickening agent and an auxiliary agent, wherein the diblock type nonionic surfactant is ethoxylated and propoxylated C16-18 alcohol, and the diblock type nonionic surfactant is ethoxylated and propoxylated C16-18 alcohol. The core innovation of the invention lies in that ethoxylated propoxylated C16-18 alcohol is adopted as a main surfactant, is synergistically compounded with an anionic surfactant and a biological enzyme system, and is combined with PEG-120 methyl glucose sesquistearate to form a composite surfactant system with the characteristics of rapid wetting, low-foam rapid bleaching and no residue.

The present application belongs to the technical field of preparation of multi-curved surface silicon carbide, and discloses a preparation method of reaction sintering multi-curved surface silicon carbide whole plate, comprising: mixing 100 parts of alpha-SiC powder, 15-20 parts of composite carbon source, 1-2 parts of silicon carbide fiber, 2.3-3.8 parts of dispersing agent, 8-12 parts of water-soluble phenolic resin, 2-4 parts of additive and 42-46 parts of water according to weight parts, pre-dispersing, ball-milling, spray granulating, pressing into multi-curved surface green body; the green body is stacked with graphite support parts and filled with graded silicon particles, and is subjected to step-by-step degreasing and step-by-step reaction sintering under vacuum argon, and then is cooled after temperature control to obtain the product. Through the synergistic effect of formula control of composite carbon source, specific ternary additive and fine sintering process, the technical problem of sintering cracking and cracking of multi-curved surface whole plate is eliminated, and the product density, bending strength and fracture toughness are effectively improved.

The application belongs to the technical field of demulsification dehydration, and discloses a preparation method of a demulsifier and application of the demulsifier in asphalt mixture. The preparation method of the demulsifier comprises the following steps: reacting acidified clay minerals with gamma-methacryloxypropyltrimethoxysilane to obtain modified clay minerals; reacting the modified clay minerals with triethylenetetramine to obtain polyamine-based clay minerals; and reacting the polyamine-based clay minerals with bromohexadecane to obtain the demulsifier. The demulsifier is a polyquaternary ammonium salt type cationic demulsifier. Through the positive charges of cations contained on the surface of the clay minerals and quaternary ammonium salts, the double electric layer structure of the surface of anionic emulsified asphalt is changed, the thickness of the double electric layer is compressed, the electrostatic repulsion between the emulsified asphalts is reduced, and the demulsification effect is good. When the asphalt mixture is prepared, the adhesion of asphalt particles to aggregates can be effectively promoted, the water in the asphalt mixture can be effectively discharged, and the solidification and molding of the asphalt mixture can be accelerated.

This application relates to the field of demulsifiers, and more specifically, to an oil sludge demulsifier, its preparation method, and its application. An oil sludge demulsifier comprises the following components in the following mass ratio: 20-35 parts of a surfactant complex, 7-12 parts of an alkyl sulfate sodium cosolvent, 0.6-1.8 parts of a stabilizer, and 48-55 parts of water; wherein the surfactant complex comprises hyperbranched polyamide amine and polyether amine modified magnetic nanoparticles. This oil sludge demulsifier improves upon the problems of existing demulsifiers, such as low dehydration capacity, slow dehydration speed, poor demulsification effect, and low oil content, thereby improving the demulsification performance and dehydration efficiency, and achieving effective separation of oil sludge.

This invention relates to the field of medical blood purification equipment technology, and discloses a lipid adsorption material regeneration device, including a main body, a rotary switching module, an adsorption column module, a dynamic pressure balancing system, a fluid pipeline system, and a main controller. The rotary switching module drives the adsorption column module to switch between three stations: treatment, regeneration, and balancing preparation. The adsorption column module is filled with pH-responsive hydrogel material to achieve adsorption and regeneration functions. The dynamic pressure balancing system forms a magnetic circuit through a magnetic piston and electromagnetic drive components in a bypass pipe, which senses and adjusts the pressure inside the column in real time. The fluid pipeline system controls the connection of input and output connectors via an electric push rod to achieve fluid switching. The main controller integrates data from multiple sensors, including pressure, pH, and optical sensors, to intelligently terminate the regeneration process. This invention achieves in-situ online regeneration of the adsorption material, continuous uninterrupted treatment, and precise closed-loop control, improving treatment efficiency and safety, and significantly reducing consumable costs.

This invention belongs to the field of wastewater treatment technology and discloses a self-emulsifying oily wastewater removal agent and its preparation method. The self-emulsifying oily wastewater removal agent comprises the following raw materials in parts by weight: 30-50 parts of sulfomethylated tannin, 15-25 parts of aluminum sulfate, 0.5-2 parts of polyacrylamide, 1-3 parts of sodium hydroxide, and 10-20 parts of polyaluminum chloride. This invention applies sulfomethylated tannin to the removal of self-emulsifying oily wastewater. Through the emulsifying and disrupting effect of sulfomethylated tannin, the emulsified state of oil droplets is effectively destroyed, thereby promoting oil-water separation. The macromolecular structure and active groups of this modified tannin provide more adsorption sites and stronger bridging effects, improving the speed and efficiency of oil droplet aggregation.

This invention discloses a rapid self-assembly of Ti3C2T based on pH regulation. x The method for preparing MXene thin films is as follows: 1. Preparation of Ti3C2T x MXene dispersion; 2. Adjust pH to 1.5-3.0 with inorganic acid; 3. After stirring and settling, vacuum filter and self-assemble into a film; 4. After drying, peel off to obtain Ti3C2T. x MXene thin films. This invention introduces trace amounts of inorganic acid to regulate the surface charge and colloidal stability of MXene sheets, effectively weakening the electrostatic repulsion between sheets, significantly improving the film formation efficiency of vacuum filtration, and ensuring the quality of Ti3C2T films. x MXene films offer excellent conductivity and are simple and inexpensive to process, requiring no special equipment, making them ideal for achieving high-quality Ti3C2T. x The efficient and large-scale preparation of MXene thin films provides a reliable approach suitable for electromagnetic shielding, flexible electronics, and electrochemical energy storage.

The application discloses a high-initial-efficiency dry-method composite graphite electrode, which comprises graphite, conductive carbon material, PTFE adhesive and boron-containing lithium salt, wherein the mass ratio of the graphite, the conductive carbon material, the PTFE adhesive and the boron-containing lithium salt is X:(100-X-Y-Z):Z:Y, wherein 90<=X<98, 1<=Z<=2 and 0.2<=Y<(100-X-Z), the boron-containing lithium salt is introduced into the graphite and the PTFE adhesive, and the proportion of each component is accurately controlled, so that the dual optimization of high energy density and high initial efficiency is realized, the production cost and the process complexity are reduced, and a new efficient and low-cost idea is provided for dry-method preparation of the high-performance graphite electrode.