228results about How to "Avoid uneven dispersion" patented technology

The invention provides a medicament for treating gynecological inflammation, which comprises the following components in parts by weight: 5 to 30 parts of common cnidium fruit, 4 to 30 parts of golden cypress, 4 to 30 parts of lightyellow sophora root, 5 to 30 parts of sessile stemona root, 0.1 to 2 parts of borneol, 0.1 to 2 parts of menthol, 0.1 to 2 parts of chlorhexidine acetate, and 0.1 to 2 parts of vitamin E. Compared with the prior art, the invention adopts a compound preparation consisting of classical Chinese medicaments and western medicaments, and has the characteristics of quickly killing pathogenic bacteria of western medicaments as well as diminishing inflammation and resisting bacteria of Chinese medicaments. Microbiological experiments and toxicant experiments prove that: the Chinese medicinal preparation has an excellent killing effect on pathogenic bacteria causing gynecological inflammation, such as staphylococcus aureus, candida albicans, escherichia coli and other pathogens, has the effects of treating female pruritus vulvae, has an accurate curative effect, low toxic or side effect, excellent functions of inflammation diminishing, sterilization and itching relieving.

The invention relates to a novel TiAl base self-lubricating composite. The novel TiAl base self-lubricating composite is characterized in that a TiAl base serves as a matrix, and graphene nanosheets and hollow spheres containing WS2 serve as an enhancing phase and a lubricating phase. The graphene nanosheets account for 0.5-1.5 wt.% of the matrix by mass, and hollow spheres containing WS2 account for 3.0-5.0 wt.% of the matrix by mass. A preparing method of the novel TiAl base self-lubricating composite comprises the following steps that elementary substance powder is weighed according to the mole ratio of elements contained in the TiAl base to serve as matrix materials, the graphene nanosheets and the hollow spheres containing WS2 are weighed according to the proportion, the materials are evenly mixed and then subjected to spark plasma sintering, and the novel TiAl base self-lubricating composite is obtained. With the graphene nanosheets and the hollow spheres containing WS2 as the enhancing phase and the lubricating phase, the TiAl base self-lubricating composite is high in compactness, good in mechanical property and high in abrasion relieving and resisting performance.

The invention relates to a preparation method of a lead-free ray radiation preventing rubber composite. The preparation method comprises the steps: radiation shielding filler slurry preparation; emulsion blending; solidification and demulsification; drying; and vulcanization. Radiation shielding filler is prepared into modified shielding filler slurry stably dispersed into water, and the modifiedshielding filler slurry is mixed with rubber latex, so that not only can the uniform dispersion of the filler in rubber be kept, but also the interface bonding of the filler and the rubber is improved, and the preparation method is simple, convenient and feasible in operation and easy to realize industrialization. By using the preparation method disclosed by the invention, the phenomenon of dispersion nonuniformity caused by demulsification due to direct mixing of the shielding filler and the rubber latex is avoided, and a rubber matrix can be favorably filled with high-concentration shieldingfiller. The high-concentration shielding filler is uniformly dispersed into the rubber and is good in interface bonding, so that the lead-free ray radiation preventing rubber composite has a very high ray radiation shielding effect; and the obvious deterioration of the mechanical properties of the rubber composite filled with the high-concentration shielding filler cannot be caused, so that requirements for performances in actual use can be met.

The nano modified polyurethane material consists of nano modified SiO2 particle sol and leather polyurethane resin. Nano SiO2 particle sol is first prepared through sol-gel process and then dispersed with ultrasonic dispersing machine to polyurethane resin to prepare leather polyurethane / nano modified SiO2 material, where nano SiO2 exists in sol form to result in homogeneous dispersion of nano particle in polymer. The nano modified polyurethane material may be stored stably in long period and may be used in producing leather with excellent mechanical performance, low temperature breaking performance, high temperature heat stability, drying performance and color performance.

The invention discloses micro-carbon casting powder for high-carbon steel in square and rectangular billets and a preparation method of the micro-carbon casting powder, and belongs to the technical field of steelmaking metallurgical auxiliary materials. The invention discloses micro-carbon casting powder for the high-carbon steel in the square and rectangular billets is prepared from following rawmaterials in cluding, 40-65 parts of a special pre-melting material, 0-30 parts of wollastonite, 3-8 parts of quartz, 1-5 parts of bentonite, 0-3 parts of magnesia, 2-7 parts of albite, 2-6 parts offluorite, 1-4 parts of sodium carbonate, 1-4 parts of sodium fluoride, 1-3 parts of lithium carbonate, 2-6 parts of sodium nitrate, 0-1.5 parts of medium-carbon graphite, 0-1.5 parts of high-carbon amorphous graphite, 1-2.5 parts of superfine color black and 1.8-3.8 parts of a binding agent. The casting powder is low in carbon content, high in pre-melting ratio, not prone to generating a slag ring, capable of generating heat automatically and capable of being applied to the high carbon steel in special steel in the square and rectangular billets, capable of avoiding local recarburization of the high carbon steel in the special steel, meanwhile, low in fluorine content and capable of avoiding erosion to nozzle slag lines.

The invention provides a weather-resistant graphene electricity-conduction and heat-conduction composite material and a preparation method thereof, relating to the technical field of high molecular materials. The composite material is prepared from the following raw materials: modified graphene, a modified elastomer, polymethyl methacrylate, thermosetting polyimide resin, a conductive filler, benzoyl peroxide, a lubricant, a cross-linking agent and an antioxidant. The composite material has good electrical conductivity property and heat conduction property, relatively good mechanical properties such as stretching resistance, tenacity and impact resistance, and good processability, is low in cost and can be widely applied to the fields of electric power grids, electronics, electric appliances, communication and the like.

The invention relates to a solid particle foam inhibitor and a method for preparing the same. The ingredients of the foam inhibitor consist of 50-80% of organic carrier, 10-18% of main defoaming materials, 0.5-4% of emulsifying agent, 1-10% of structural agent and 3-25% of deionized water. The method for preparing the foam inhibitor comprises the following steps of: sufficiently mixing the main defoaming materials with the emulsifying agent; adsorbing the main defoaming materials and the emulsifying agent on the carrier; and adding the structural agent and forming particles with good liquidity through working procedures of granulating and drying. The prepared solid particle foam inhibitor has excellent applications in industrial processes, such as washing, sewage treatment and textile printing and dyeing.

The invention relates to a light switching module. The light switching module comprises a light polarizing assembly, a liquid crystal box and a scattering assembly, wherein the light polarizing assembly is used for converting incident light into polarized light; the liquid crystal box is arranged on the light polarizing assembly and comprises two transparent substrates and liquid crystal located between the two transparent substrates, and the liquid crystal box is used for regulating and controlling the direction of the polarized light; the scattering assembly is arranged on the liquid crystal box and comprises base material and double-refraction layers, the base material has a refraction rate, a plurality of micro light scattering structures are arranged on the surface of the base material, the arrangement direction of the micro light scattering structures is parallel to the direction of polarized light of the light polarizing assembly and perpendicular to the two-dimensional direction, the double-refraction layers are arranged on the multiple micro light scattering structures and have the abnormal light refraction rate parallel to the direction of optical axes of the double-refraction layers and the normal light refraction rate perpendicular to the direction of optical axes of the double-refraction layers, and the refraction rate of the base material is the same as one of the abnormal light refraction rate and the normal light refraction rate of the double-refraction layers. The light switching module solves the problem that in the prior art, dispersion of polymer dispersing-type liquid crystal in polymer base material is not even.

The invention discloses a method for preparing a silicon carbide ceramic impeller through gel casting and pressureless sintering, and provides a preparation method of a pressureless sintered silicon carbide ceramic impeller with a complex and accurate shape characteristic and an external diameter size capable of reaching over 160 mm. A silicon carbide solid-phase sintering formula system of a boron-containing sintering auxiliary agent and a gel casting and pressureless sintering process are adopted; and the method comprises eight steps of: preparing ceramic slurry; performing injection molding; demolding; drying; machining; degumming; performing pressureless sintering; and machining. According to the method, the technical problems of non-uniform mixing of large-scale ceramic slurry in gel casting, dryness, crack and deformation in a pressureless sintering process and the like are solved, and finally, preparation of the pressureless sintered silicon carbide ceramic impeller is realized. The impeller has good performance such as corrosion resistance, wear resistance, high temperature resistance and the like, and can be widely applied to a centrifugal pump for corrosive liquid conveying of various industries.

The invention belongs to the technical field of wastewater treatment, and particularly discloses a nano titanium dioxide photocatalytic degradation agent and a preparation method thereof. For the structure of the nano titanium dioxide photocatalytic degradation agent, nano titanium dioxide particles are uniformly distributed in the surfaces of phenolic resin hollow microspheres. The preparation method comprises the following steps that 1, under the alkaline condition, nanosilicon dioxide, phenol and formaldehyde are subjected to condensation polymerization to prepare nanosilicon dioxide modified phenolic resin; 2, the nanosilicon dioxide modified phenolic resin prepared in the step 1 is composited with nano titanium dioxide, after composition is finished, a sodium hydroxide solution is added till silicon dioxide is completely dissolved away, separation and drying are conducted, at last, under the nitrogen atmosphere, sintering is conducted for 12-48 h at 450-550 DEG C, and the nano titanium dioxide photocatalytic degradation agent is obtained. The nano titanium dioxide photocatalytic degradation agent has the good light degradation efficiency, and the preparation method is easy to implement.