222 results about "Aqueous suspension" patented technology

The invention discloses a PHA nano aqueous suspension as well as a preparation method and application thereof, and belongs to the field of high polymer materials and processing and application thereof. The suspension takes PHA resin as a dispersion phase and water as a continuous phase, the total solid content is 23-65wt%, the PHA resin accounts for 80-98.5 wt% of the total solid, and the assistant accounts for 1.5-20wt% of the total solid. The average particle size of PHA particles is 30-140 nm, D90 is smaller than or equal to 150 nm, the polydispersity index PDI is smaller than 0.3, and when the pH is 6.5-7.5, the absolute value of Zeta potential is larger than 30 mV. The preparation method comprises the following steps: pretreating the PHA raw material, preliminarily dispersing in a water phase under the action of the dispersion stabilizing aid, and carrying out high-energy homogenization treatment. The obtained suspension is stable in storage, has excellent barrier property and mechanical property after film formation, and is suitable for preparing biodegradable food packaging barrier coatings, water-based environment-friendly coatings and water-based adhesives.

The invention discloses a hydrogen storage cylinder co-cured by a titanium alloy liner and fiber prepreg and a preparation method thereof, and the preparation method comprises the following steps: preparing a graphene modified PEEK water-based suspension; preparing a graphene modified carbon fiber / PEEK prepreg and a graphene modified glass fiber / PEEK prepreg by using the graphene modified PEEK water-based suspension liquid; the titanium alloy hydrogen storage cylinder inner container is machined and formed, the surface of the titanium alloy hydrogen storage cylinder inner container is anodized, and a uniform and compact titanium oxide film is formed; and sequentially winding the graphene modified carbon fiber / PEEK prepreg and the graphene modified glass fiber / PEEK prepreg on the outer side of the anodized titanium alloy hydrogen storage cylinder liner through a laser winding technology. The hydrogen storage cylinder prepared by the preparation method has the characteristics of high strength, good toughness, high temperature resistance, high flame retardance and the like, can provide long-term reliable safety guarantee in high-pressure hydrogen storage application, and is suitable for hydrogen storage requirements of electric / hydrogen energy hybrid aircrafts.

To provide a novel method for oil-water separation of an oil-in-water suspension and an oil-water separation device.SOLUTION: A method for oil-water separation is provided, comprising: contacting an oil-in-water suspension with water, which may contain microbubbles, such that a suspension-rich phase is positioned above and a water-rich phase is positioned below; supplying new microbubbles to the water-rich phase so as to prevent uniform mixing between the suspension-rich phase and the water-rich phase; and floating microbubbles having adsorbed micelles in the suspension. Also provided is an oil-water separation device comprising: a separation tank that houses an oil-in-water suspension and water, which may contain microbubbles, such that a suspension-rich phase is positioned above and a water-rich phase is positioned below; and a microbubble generator that generates microbubbles to be supplied into the separation tank, wherein the microbubble generator is disposed such that the generated microbubbles are supplied to the water-rich phase, and the interior of the separation tank is not stirred during microbubble generation in a manner of preventing uniformity inside the tank.SELECTED DRAWING: Figure 1

The invention provides a water-based suspension pesticide composition. The water-based suspension pesticide composition comprises the following components: a solvent deionized water; based on the mass of the solvent, the core-shell structure active particles account for 0.5-20w%; based on the mass of the solvent, 0.01-5w% of a suspension stabilizer; the core-shell structure active particles are humidity response microspheres resistant to acid and alkali, the core-shell structure active particles are used, intermolecular acting force is reduced, particle agglomeration is reduced, dispersity of active ingredients is improved, a natural polymer material is adopted as a shell, biocompatibility is good, biodegradability is achieved, pollution to the environment is reduced, and the core-shell structure active particles are environmentally friendly. Meanwhile, the PEG-PCL block copolymer is introduced, so that the pesticide release rate can be accurately controlled according to the environment humidity change, and the pesticide utilization rate is increased. Moreover, the chitosan-sodium alginate composite gel of the particle shell layer is stably and slowly released in neutral and weakly alkaline soil, in acidic and strongly alkaline environments, the microspheres are prevented from collapsing, the stability of the particle slow-release system in soil with different PH values is improved, and the application range of the active particles is expanded.

The application discloses large-diameter core-shell polymer particles, a preparation method and application thereof. The large-diameter core-shell polymer particles have a particle size of 1-50 microns; the structure of the particles comprises a water-insoluble soft substance layer and a hard substance layer, and the weight ratio of the soft substance layer to the hard substance layer is 1:0.1-10, and the hard substance layer is located at the outer layer of the soft substance layer. The particles are prepared by using a modified aqueous suspension polymerization and / or emulsion polymerization method. The obtained particles can improve the hardness of an electric core, inhibit the deformation of the electric core, and do not affect the air permeability. Compared with general micron-level homogeneous polymer particles, the particles provided by the application have a soft core and hard shell structure, which is also beneficial to improving the performance of a diaphragm. The hard substance layer located at the outer layer of the particles ensures that the diaphragm coating is not sticky after drying, so that the diaphragms are not adhered to each other after being wound. The soft substance layer located at the inner layer of the particles can provide strong adhesion, so that the diaphragm and the pole piece have higher peeling strength.

The present invention relates to a nonwoven fabric and the production thereof. More specifically, the invention relates to a dispersible and biodegradable nonwoven fabric comprising a web prepared using a wet lay forming process. The process involves forming a web from the aqueous suspension on a wire support, hydroentangling and drying the web. The web can be provided with a high quality hydroembossed pattern, which remains even in wet wipes prepared from the material.

The invention relates to a powder preparation for beverages comprising a leguminous protein extract, wherein the leguminous protein extract has a protein content, expressed on dry weight basis of the extract, of 75% or higher, a dry matter ranging from 90 to 100%, wherein the protein extract has a Turbiscan Stability Index TSI at the Middle Region TSIMR below 5.0 and a rheometer viscosity going from 0.40 to 0.75 Pa.s, the viscosity being determined at 20°C, with a shear rate of 40s-1, on an aqueous suspension having 15% weight of dry matter.

The invention relates to a powder preparation for beverages comprising a leguminous protein extract, wherein the leguminous protein extract has a protein content, expressed on dry weight basis of the extract, of 75% or higher, a dry matter ranging from 90 to 100%, wherein the protein extract has a Turbiscan Stability Index TSI at the Middle Region TSIMR below 5.0 and a rheometer viscosity going from 0.40 to 0.75 Pa.s, the viscosity being determined at 20°C, with a shear rate of 40s-1, on an aqueous suspension having 15% weight of dry matter.

The present invention refers to a process for producing white UV-absorbing surface-reacted calcium carbonate doped with a titanium species, comprising the steps of providing a calcium carbonate-comprising material, a calcium phosphate selected from monocalcium phosphate and / or dicalcium phosphate, and at least one titanium comprising substance, treating the calcium carbonate-comprising material with the calcium phosphate in an aqueous medium to form an aqueous suspension and grinding the aqueous suspension at a pH value of at least 4.2 to form an aqueous suspension of surface-reacted calcium carbonate, wherein the calcium carbonate-comprising material and the calcium phosphate in combination have a calcium ion to phosphate ion molar ratio (Ca2+:PO43−) in the range from 1.75:1 to 100:1, and wherein the at least one titanium comprising substance is added before and / or during and / or after the treatment step and / or before and / or during the grinding step.

A method for recovering ammonium perchlorate from a solid composite propellant, the method being carried out at a temperature of less than 50° C. involving maceration of solid composite propellant fragments in the form of an aqueous suspension, the method being terminated when the ionic conductivity in the aqueous suspension reaches a stabilized value, of less than 60 mS / cm.

Modified wheat flour having the following properties (A) and (B):　(A) when the viscosity of an aqueous suspension containing the modified wheat flour is measured using the RVA (here, the aqueous suspension contains 10 parts by mass of the modified wheat flour per 100 parts by mass of water, and when the viscosity is measured, the temperature of the aqueous suspension is first held at 50°C for 1 minute, then raised to 80°C over a period of 5 minutes, held at 80°C for 5 minutes, then raised to 95°C over a period of 2 minutes and 30 seconds, and then held at 95°C for 5 minutes), M2 / M1 is 1.0-4.0, where M1 is the maximum viscosity in the period from the start of the temperature rise from 50°C to the end of the holding at 80°C for 5 minutes, and M2 is the maximum viscosity in the period from the start of the temperature rise from 80°C to the end of the holding at 95°C for 5 minutes; and (B) when the viscosity of an aqueous suspension containing the modified wheat flour is measured using the RVA (here, the aqueous suspension contains 10 parts by mass of the modified wheat flour per 100 parts by mass of water, and when the viscosity is measured, the temperature of the aqueous suspension is first held at 50°C for 1 minute, then raised to 95°C over a period of 7 minutes and 30 seconds, and then held at 95°C for 5 minutes), the peak viscosity P is no higher than 2000 mPa·s.

The invention relates to a milling element (2) for a refiner. Milling strips (21) are arranged on a base plate (18) of the milling element (2). Adjacent milling strips (21) form grooves (22) extending between the milling strips (21). A hydraulic capacity is provided by the open area of the grooves in the peripheral direction. The height of the milling strips above the base plate (18) decreases from radially inwards to radially outwards, wherein, at a predetermined partial height, the open area of the grooves at the partial height at the inner radius approximately corresponds to the open area of the grooves at the partial height at the outer radius. The partial height is obtained by shortening all milling strips (21) by a predetermined amount (27).

The utility model provides a reciprocating scanning type air floatation device for oily sludge chemical thermal cleaning, the reciprocating scanning type air floatation device comprises a thermal cleaning pool, a reciprocating motion system, a gas transmission system and a control system, the reciprocating motion system comprises an air floatation trolley and a reciprocating motion device, and the air floatation trolley is provided with a foaming pipe group for generating bubbles; the air floating trolley is located in the hot washing pool, the control system controls the air conveying system to input air into the foaming pipe set, and the control system controls the air floating trolley to reciprocate in the hot washing pool through the reciprocating motion device. According to the oil-water separation device, the problems that in the prior art, bubbles injected into oil-water suspension liquid are more uniform, the bubbles make more sufficient contact with de-missible oil drops in the oil-water suspension liquid, the oil-water separation efficiency is higher, and the oil-water separation effect is better are solved.

The present invention addresses the problem of providing a method for producing PHA, the method being capable of suppressing the generation of fine powder. The problem is solved by a method for producing PHA, the method comprising: (a) a step for enzymatically treating a culture solution containing PHA-containing bacterial cells to obtain an aqueous PHA suspension; (b) a step for heating the aqueous suspension obtained in step (a) at a heating rate of 50 °C / sec to 180 °C / sec to a temperature ranging from (Tm-32) °C to (Tm-2) °C (where, Tm is the melting point of the PHA); and (c) a step for cooling the obtained aqueous suspension, wherein the pH of the aqueous suspension during heating is 2.0-5.0.

The present invention provides liquid oral dosage form of lipid lowering agent suitable for oral administration to human or animals.

An ink may be provided that includes a two-dimensional WS2 nanosheet and an organic solvent, such as water, and may be free of protective molecules and surfactants. Circuits may be provided that include this ink disposed onto a surface of a substrate (such as a flexible substrate) in various patterns, including, e.g., a superconducting qubit. The ink may be formed by sonicating, then centrifuging at a first speed, a sulfuric acid-KxWS2 solution, where x=0.3˜0.7, removing any supernatant from the centrifuged first suspension and replacing with water and sonicating the resulting WS2-water suspension, then centrifuging the result at a speed slower than the first speed, and using an upper portion of the resulting suspension.

An aqueous suspension of a mineral material, for example calcium carbonate, may be prepared by wet grinding in the presence of an aqueous dispersion of (meth)acrylic polymer neutralized by a combination of at least one monovalent ion and at least one divalent ion. Such an agent may be used for facilitating grinding and such a mineral suspension may be used for preparing a mass filler for the preparation of paper, for preparing a paper coating slip, or for preparing a coating composition.

The present invention provides liquid oral dosage form of lipid lowering agent suitable for oral administration to human or animals.

The present invention relates to a method of preparing a microbial cell product, the method comprising: providing an aqueous suspension comprising microbial cells; subjecting said suspension to mechanical cell dissociation at a temperature in the range of 15 DEG C to 35 DEG C, preferably at a pH in the range of 9 to 11, to obtain an aqueous suspension comprising dissociated microbial cells; separating the suspension to provide an extract rich in small cell debris and an extract rich in large cell debris; and combining at least a portion of the extracts to provide the microbial cell product. The invention further relates to a microbial cell product obtained or obtainable by said method. The invention further relates to the use of said products in food products, for example as a replacement for egg white; in animal food; and / or use in cosmetic formulations.

Proposed is an aqueous suspension including water, a hexagonal boron nitride (hBN) particle, and a dispersant. A cutting fluid prepared by diluting the aqueous suspension with water is also proposed.

Process for the preparation of particles with antibacterial coating, which includes the following steps: (a) providing an aqueous suspension containing a polyamine, a crosslinker and a porous organic or inorganic carrier material in particle form at a temperature lower than or equal to 10° C. in a mixer for coating the inorganic carrier material with the polyamine; (b) crosslinking the organic polymer in the pores of the inorganic carrier material and simultaneously removing water.

The application discloses a preparation method of graphene nanocavitation microspheres, and comprises the following steps: phase change microcapsule preparation: dissolving paraffin and an emulsifier in an aqueous solvent, stirring under constant temperature and rotating speed for a certain time to form a stable oil-in-water emulsion, and the precipitate after centrifugation at room temperature is the paraffin microcapsule; graphene aqueous suspension preparation: dispersing graphene in a tetrahydrofuran solution and mixing with degassed water, removing the tetrahydrofuran by solvent evaporation after reaction for a certain time at a certain temperature; graphene nanocavitation microsphere preparation: mixing the paraffin microcapsule and the graphene solution, performing suction filtration after sufficient stirring, so that the graphene nanosheet is wrapped on the surface of the paraffin microcapsule, and finally drying at 60 DEG C; the paraffin capsule is removed by being heated and melted as a sacrifice layer; the graphene nanocavitation microsphere has the characteristics of high adsorption capacity and wide spectrum while having a fast adsorption rate for various metal ions and soluble organic matters.

A biocidal aqueous suspension or colloid composition comprising 4-15 wt.% of a sugar ester derived from esterification of a sugar and a fatty acid, 4-15% of a dialkyl ester which is not a sugar ester,

A suspension comprising a water soluble polymer suspended as particulates in a nonaqueous liquid is useful for treating water from which contaminant particles need to be removed. The suspension includes mineral oil and at least about 10 wt % of particulate polydiallyldimethylammonium chloride (polyDADMAC) in the form of powder or beads. The suspension can be highly concentrated, for example, up to 80 wt % polyDADMAC. The polyDADMAC can be high molecular weight beads. A method and system for delivering the suspension to flowing wastewater is also described. The method and system can be configured to treat water such as wastewater, wherein the wastewater is generated as a waste stream during various large-scale operations such as mining operations.

Method for producing high yield nano-in-micro (NIM) encapsulated bioactive siRNA dry powder comprising the steps of: —providing an aqueous suspension comprising polyplexes, in particular polyelectrolyte complexes, formed from at least a polyamine, and / or polyamide and / or polyester and siRNA, wherein the polyplexes are provided with and / or encapsulated into water soluble excipients, in particular highly purified water and / or sugar alcohol and / or sugar; —spray drying the aqueous suspension using a spray In drying apparatus, preferably a Büchi B-290, by feeding the aqueous suspension to a spray drying atomizing nozzle and subjecting the atomized droplets to a heated gas stream of a carrier gas, preferably dried and cleaned air, in particular through a multicomponent atomizing nozzle for the suspension and an atomizing gas; —collecting a spray dried powder in an accumulation means of the spray drying apparatus characterized in that the temperature in the vicinity of an outlet opening of the spray drying apparatus, in particular an outlet opening connecting a spray drying chamber with the accumulation means, during feeding of the aqueous suspension to the nozzle is controlled by temperature controlling means to be limited to an upper threshold temperature which is equal to or below a melting temperature of the respective naked siRNA.

The present invention provides an active energy ray-curable ink composition which has high storage stability and discharge stability even if the active energy ray-curable ink composition contains a polymerizable compound.　Disclosed is an active energy ray-curable ink composition which is discharged by an inkjet method and contains a polymerizable compound. An aqueous suspension of the ink composition has a pH of 6.0 to 8.0 inclusive as measured by the following test method.　Test method: An aqueous suspension of an ink composition is prepared by mixing the ink composition and water so that the content of the ink composition is 10% by mass, and the pH of the aqueous suspension is measured.

The present disclosure relates to ready-to-use, surfactant free, oral, aqueous suspension formulations comprising one or more immunosuppressive agents. The ready-to-use suspension formulations of the present disclosure can be useful in treating organ or stem cell transplant recipients or T-cell mediated diseases.

The application belongs to the technical field of polymer materials, and particularly relates to an anti-aging TPE composite material and a preparation method thereof. The application uses alpha-olefin block copolymer I as a carrier of an anti-aging agent, forms an "anti-aging agent-compatibility agent alpha-olefin block copolymer" pre-dispersed composite through synergistic action of the compatibility agent, avoids volatilization or degradation of the anti-aging agent under high temperature in a processing process, improves effective utilization of raw materials, and can significantly reduce agglomeration of the anti-aging agent, so that the anti-aging agent is more uniformly dispersed in a matrix, thereby more effectively capturing free radicals, absorbing ultraviolet rays or inhibiting oxidation reaction, and improving long-term anti-aging performance of the material. PBS and EVOH are premixed to form a polar phase water suspension, and then melt blending is performed, so that the interface compatibility of polar and non-polar components is effectively improved, phase separation is reduced, and overall mechanical properties (such as tensile strength and toughness), anti-aging performance and processing stability of the material are improved.

The present invention relates to a method for recovering ammonium perchlorate from a solid composite propellant, wherein the method is carried out at a temperature of less than 50°C, including the immersion of a solid composite propellant fragment in the form of an aqueous suspension, and the method is terminated when the ionic conductivity in the aqueous suspension reaches a stabilized value of less than 60 mS / cm.

This invention relates to the field of tobacco sheet technology, and more particularly to a tobacco sheet containing double-layer flavor microcapsules and its preparation method. The preparation method includes the following steps: preparing double-layer flavor microcapsules with a wax coating, the wax melting temperature being 40–70 °C; mixing tobacco raw materials, binders, and double-layer flavor microcapsules under high-speed shearing to obtain a dry mixture; the high-speed shearing is performed with a stirrer frequency of 25–35 Hz and a shearing blade frequency of 25–35 Hz for 15–25 s; the mass of the double-layer flavor microcapsules is 15%–25% of the mass of the tobacco raw materials; preparing a water suspension from woody raw materials, and then mixing it with binders and atomizing agents to obtain a wet mixture; spraying the wet mixture into the dry mixture under high-speed shearing to obtain a compound; and then rolling to obtain a tobacco sheet. This invention can improve the tensile strength of the tobacco sheet and reduce its viscosity while reducing the amount of woody raw materials used to ensure sensory quality.