43results about How to "Prevent re-aggregation" patented technology

The invention discloses a preparation process of an aluminum-based graphene composite wear-resistant self-lubricating material. The preparation process steps are: S1: using a chemical expansion method to prepare flake graphite into a graphene oxide suspension; S2: adding the graphene oxide suspension to a suspension containing Soluble salt of copper to form a layered composite structure of graphene oxide and Cu2+, adding a strong reducing agent to the aqueous solution to reduce the middle functional groups and Cu2+ of graphene oxide into a mixture of graphene and simple copper; S3: the mixture of step S2 The mixture is static and filtered; dried in a vacuum heating furnace drying chamber, weighed and sealed for packaging; S4: after the aluminum alloy is melted, the composite of graphene and metal copper is forced to be placed in the aluminum alloy melt to heat up to a temperature higher than Melting point 120-150°C, keep warm for 20-50 minutes; S5: Cast the uniformly mixed aluminum and graphene liquid melt into various parts; copper plating on the surface of graphene not only prevents the aggregation of graphene layered structure, but also increases the concentration of graphene and graphene Wettability of aluminum alloys. Copper and aluminum alloys can be melted in any proportion.

The invention discloses a soft particle milk replacer containing a high fructose corn syrup, belonging to the technical field of a feed formula design and feed processing. The soft particle milk replacer is prepared by the following steps of: taking a compound fermented soybean meal which is prepared by sequentially mixing bacillus subtilis and a pickle fermentation solution to ferment, and rice as main materials; adding steam fish meal, flour, a peeled soybean meal and the like for match; carrying out ultrafine crushing on the materials and preparing particle materials by using a soft granulator; uniformly spraying a composite syrup prepared from dissolvable components including emulsified fat powder, whey powder, milk powder, white granulated sugar, mycose, soyabean lecithin powder, calcium formate and the like to the surface of the particle materials by using a syrup spraying and dripping device. The nutrition of a product is fully balanced and the nutrition is complete; the soft particle milk replacer is easy to digest and absorb after multiple times of fermentation; the quality is stable; a process of combining a soft granulation system with a syrup spraying and dripping system is adopted so that the occurrence that particles become hard in a storage process of the particle feed is reduced; compared with a dry particle feed, the soft particle milk replacer has the advantages that the loss of the nutrition in a granulation heating and drying process is avoided, and the good palatability of the soft particle feed can also be kept.

The invention discloses a scale remover for pipelines of a geothermal system and a preparation method thereof. The scale remover comprises the following components by mass: 1 to 15 parts of a metal material protective agent, 2 to 20 parts of a protein decomposition agent, 5 to 25 parts of a synergist, 10 to 55 parts of acid, 5 to 30 parts of a degerming agent, 3 to 15 parts of a corrosion inhibitor and 2 to 12 parts of a scale inhibitor. According to the scale remover for pipelines of the geothermal system and the preparation method thereof in the invention, through improvement of the composition of the scale remover and increase of protein clastic enzyme in the composition, a variety of bacteria such as a plurality of pathogenic bacteria like Escherichia coli, Clostridium botulinum, Salmonella and Shigella produced during usage of the geothermal pipelines can be effectively removed; and in consideration of the fact that a plurality of protein clastic enzymes are suitable for living in a neutral environment, the protein clastic enzyme is ultimately added in the preparation process, so high activity of the protein clastic enzyme is guaranteed, and good descaling effect is obtained.

A device for preparing graphene powder, the reaction chamber is connected to the atmosphere generating component; the high-energy discharge component includes a graphene synthesis tube, a first electrode and a second electrode installed at both ends of the graphene synthesis tube, a main controller, an adjustable output power supply and Feed assembly; the graphene synthesis tube, the first electrode and the second electrode are all arranged in a sealed dish, and the first electrode and the second electrode form a ventilation structure with the graphene synthesis tube; the graphene synthesis tube is provided with a carbon source chamber and In the graphene powder chamber, the carbon source chamber is provided with a carbon source addition port; the feeding component is connected to the first control conductive copper column and the second control conductive copper column, and the feeding component is also connected to the adjustable output power supply and the second electrode; the first The electrodes are electrically connected to the main controller, and the main controller is connected to the adjustable output power supply; the second electrode is electrically connected to the adjustable output power supply. The present invention uses lignin as a carbon source, adds a carbon source additive and mixes an activated carbon source, and generates graphene powder under the action of a strong current pulse discharge.

The invention discloses a water-based polymer nano-iron oxide dispersant and a preparation method thereof. The preparation method of the dispersant comprises the following steps: S1, preparing a polyhydroxy acrylic acid copolymer under the action of an initiator from a mixture of trimethylbenzene and acrylic monomer; S2, Use the polyhydroxy acrylic copolymer prepared in step S1, isophorone diisocyanate and methoxypolyethylene glycol to react under the action of a catalyst to obtain a polyurethane modified acrylic copolymer; S3, in the polyurethane modified acrylic copolymer Add phosphorus pentoxide, distilled water and alcohol ether solvent to react to obtain water-based polymer nano-iron oxide dispersant; the water-based polymer nano-iron oxide dispersant provided by the present invention has good viscosity reduction, wide compatibility, high performance and environmental benefits.

The disclosure relates to the field of sludge treatment, and specifically provides a sludge drying and feeding device and a feeding method. The sludge drying and feeding device includes a dehydrated cake conveyor belt, a lower hopper located at the end of the dehydrated cake conveyor belt, the outlet of the lower hopper is connected at a certain angle with the dilute-phase conveying pipeline, and there is a fan at the entrance of the dilute-phase conveying pipeline, and the outlet of the dilute-phase conveying pipeline is There is a gas-material separation device, the gas outlet of the gas-material separation device is connected to the suction device, and a windmill is installed at the sludge outlet of the gas-material separation device. It solves the problem that the moisture content of the dehydrated cake is high, it is easy to block the conveying pipeline, and it is difficult to distribute evenly in the sludge drying device.

The invention provides a heat exchanger system provided with a plurality of two-phase flow stabilizing devices and a pipeline of the heat exchanger system. The two-phase flow stabilizing devices are arranged in the pipeline; each of the two-phase flow stabilizing devices comprises a core body; the core body can divide two phase flow runners in the pipeline into a plurality of small runners; and the two-phase flow stabilizing devices are continuously arranged or arranged at intervals. According to the invention, the two-phase flow stabilizing devices are continuously arranged or arranged at intervals, so that the liquid phase and the gaseous phase can be separated through a plurality of stages and steps, heat transfer can be further enhanced, and the effects of vibration and noise reduction are realized.

The invention relates to a preparation method of a thickened oil catalyzing viscosity reducer, in particular to a preparation method of an ionic liquid type thickened oil catalyzing viscosity reducer with a hydrogen supply and aromatic ring binuclear catalyzing center. The preparation method is characterized by comprising the following steps: (1) taking N, N-dimethylformamide as a reaction solvent, adding 1,4-dibromo butane in 4-picoline, reacting for 24-30 hours while stirring at the temperature of 80-90 DEG C, separating liquid, and taking lower-layer liquid; and (2) adding SbBr3 into the lower-layer liquid, reacting for 10-30 minutes at the temperature of 70-90 DEG C, and drying the product under vacuum to obtain the ionic liquid type thickened oil catalyzing viscosity reducer with the hydrogen supply and aromatic ring binuclear catalyzing center, wherein the molar ratio of the 1,4-dibromo butane, the 4-picoline, SbBr3 and the N, N-dimethylformamide is 1:2.0-2.2:0.9-1.1:10-12. The viscosity reducer prepared by the method has good viscosity reducing effect on thickened oil.

The invention discloses a single-layer graphene macromolecular composite epoxy resin adhesive and a preparation method thereof. The method comprises the following steps: (1) preparing a solvated graphene film; (2) mixing the solvated graphene film with an epoxy resin solution, and then removing the solvent from the mixed solution to obtain the single-layer graphene macromolecular composite epoxy resin adhesive; wherein the graphene film is obtained by suction filtration of a single-layer graphene dispersion, and the single-layer graphene dispersion is obtained by direct thermal reduction or chemical reduction of single-layer graphene oxide. The solvent for the solvation is an organic solvent capable of simultaneously dispersing graphene and epoxy resin, such as dimethyl sulfoxide. The solvation completely avoids re-aggregation of the single-layer graphene, and ensures a single-layer structure. The single-layer graphene molecular composite epoxy resin adhesive can be obtained without using complicated technology. The graphene exists in a single layer rather than agglomerate in the adhesive, so a very small amount (0.01 wt%) of graphene can significantly improve the performance of the epoxy resin adhesive, such as adhesive property.