16results about How to "High apparent viscosity" patented technology

The invention belongs to the technical field of oil exploitation, and particularly relates to an acid liquor thickening agent as well as a preparation method and application thereof. The synthesis method comprises the following steps: adding butylene glycol, 4, 4 '-diaminostilbene-2, 2'-disulfonic acid, (2-acrylamido ethyl) phosphonic acid, monopotassium phosphate and deionized water into a first reactor, uniformly stirring, and adjusting the pH value to 7-8; (3-acryloyloxypropyl) tri (trimethylsiloxy) silane, deionized water, hydroxypropyl methyl cellulose, OP-10 and monopotassium phosphate are sequentially added into a second reactor, and the pH is adjusted to be 7-8; adding an initiator into a high-position dropwise adding tank, dropwise adding the initiator into a second reactor, quickly adding the mixed liquid in the first reactor when the viscosity begins to rise, heating, and carrying out heat preservation reaction to obtain viscous liquid; and drying and granulating to obtain the product. The invention has the advantages of simple synthesis, high apparent viscosity, strong shear resistance, good salt-resistant and hardness-resistant effects, and good drag reduction effect.

This invention relates to a fat mimic based on micro / nano-sized starch, its preparation method, and its application. The preparation method of the fat mimic includes: S1: providing a potato starch solution with a concentration of 15-20%; S2: adding 35-50 u / g of α-amylase (with an enzyme activity of 10000 u / g) based on the mass of potato starch, and enzymatically hydrolyzing at 85-90℃ for 5-15 min to obtain a potato starch enzymatically hydrolyzed fat mimic with a DE value of 2-3; S3: adjusting the potato starch enzymatically hydrolyzed fat mimic to a concentration of 1-5%, and using dynamic ultra-high pressure microfluidic technology at a pressure of 180-200 MPa for 6-12 cycles of micro-nano-sized potato starch fat mimic to obtain a particle size between 500-700 nm. Compared with enzymatically hydrolyzed fat mimics, the micro-nano-scale potato starch fat mimics prepared in this invention have significantly improved oil retention, emulsification, emulsification stability, sedimentation, and apparent viscosity. This is beneficial for increasing their fat substitution rate in food and developing low-fat or fat-free foods with a more delicate texture and better sensory experience and textural expectations for consumers.

The invention discloses a method for preparing an oleogel high internal phase p-pickering emulsion based on a compound formed by potato protein fibers and Arabic gum. Comprising the following steps: incubating a potato protein aqueous solution under a low pH condition to obtain a potato protein fiber solution; mixing the potato protein fiber solution with the Arabic gum solution, and freeze-drying to prepare a compound; preparing a compound solution, and mixing the compound solution with the oil phase; and shearing and dispersing to obtain the oil gel high internal phase pickering emulsion. The stability, uniformity, oil holding capacity, apparent viscosity, texture and other characteristics of the prepared oleogel are greatly improved, the application range of the oleogel in food is widened, the oleogel can serve as a fat substitute to be applied to biscuits, cakes and other food, the oleogel can also serve as a carrier for loading, embedding and controlled release of bioactive substances, and the utilization rate of the bioactive substances is increased.

The present invention provides a natural skin care hydrogel for pet wounds and a preparation method and application thereof, wherein the raw materials for preparing the hydrogel include: a gel forming agent, a moisturizing agent, aloe polysaccharide, zinc hyaluronate, saccharic acid, laurocapron, zinc gluconate, vitamin E, vitamin B, PEG-40 castor oil, polyethylene glycol, triethanolamine, mint essence, ethyl hydroxybenzoate and deionized water. The natural hydrogel matrix screened out by the present invention can absorb and retain a large amount of water to form a soft, elastic and transparent gel-like substance; the gel has a uniform appearance and has the dual effects of hydration and absorption, and has good gel network mechanical properties, density, apparent viscosity, water absorption and moisturizing air permeability, can keep the wound surface moist and have the dual effects of hydration and absorption, autonomously moisturize the wound surface to promote epidermal growth and epithelial regeneration, prolong the contact time with the skin, and improve the absorption of effective substances; the physicochemical properties are stable, and it is a very ideal skin dressing for external use.

The present invention belongs to the field of oil production technology, and specifically relates to a polymer thickener and its preparation method and application. The preparation method is as follows: N-acryloyl (trimethylol) aminomethane, deionized water, hydroxyethyl cellulose, dodecylphenol polyoxyethylene ether, and buffer salt are sequentially added in a reactor, stirred evenly, perfluorooctyl ethyl acrylate, 1-vinyl-2-pyrrolidone, N, N'-diallyl-L-tartaric acid diamine are sequentially added, stirred evenly, and pH is adjusted to 7-8; an initiator is added to a high-position drop-adding tank, and after the drop-adding is completed, the reaction is kept warm to obtain a viscous liquid; the above-mentioned viscous liquid is dried and granulated to obtain a product thickener. The present invention has the advantages of simple synthesis, high apparent viscosity, strong shear resistance, and good drag reduction effect.

The invention belongs to the technical field of oil exploitation, and particularly relates to a dry powder thickening agent for fracturing as well as a preparation method and application thereof. The thickening agent comprises the following components: (a) 1-vinyl-2-pyrrolidone; (b) a di [2-(methacryloyloxy) ethyl] phosphate ester; (c) 2-(perfluorohexyl) ethyl methacrylate; (d) 4, 4 '-diaminostilbene-2, 2'-disulfonic acid; (e) an initiator; based on 1 mole part of 1-vinyl-2-pyrrolidone, the dosages of the di [2-(methacryloyloxy) ethyl] phosphate ester, the 2-(perfluorohexyl) ethyl methacrylate and the 4, 4 '-diaminostilbene-2, 2'-disulfonic acid are 0.05 to 0.1 mole part, 0.1 to 1 mole part and 0.2 to 0.5 mole part respectively, and the dosages of the di [2-(methacryloyloxy) ethyl] phosphate ester, the 2-(perfluorohexyl) ethyl methacrylate and the 4, 4 '-diaminostilbene-2, 2'-disulfonic acid are respectively 0.05 to 0.1 mole part, 0.1 to 1 mole part and 0.2 to 0.5 mole part. The thickening agent has the advantages of high apparent viscosity, high shear resistance, temperature resistance and high resistance reduction rate, and the resistance reduction rate reaches 70% or above.

The present invention belongs to the technical field of oil extraction, and specifically relates to a drag reducer for shale gas reservoir fracturing and a preparation method thereof. The preparation method is as follows: 5-allyl-3-methoxy salicylic acid methyl ester, methacryloylethyl sulfobetaine, 1-vinyl-3-methylimidazolium tetrafluoroborate, allyl dimethyl (4-methoxyphenyl) silane, OP-10, sodium dodecyl sulfate, buffer salt, deionized water are sequentially added to a reactor, and stirred to form a uniform emulsion; heating, adding an initiator to a high-level tank, keeping warm, heating, cooling, adjusting the pH value, and obtaining a viscous liquid; granulation to obtain a final product drag reducer. The present invention has the advantages of a wide source of raw materials, a simple synthesis process, and no by-products; at the same time, the present invention has the characteristics of high viscosity and high drag reduction rate, and the apparent viscosity at a concentration of 0.2wt% is ≥200mPa.s, and the drag reduction rate is ≥75%.

The present invention belongs to the field of oil production technology, and is specifically related to a kind of acid liquid thickener and its preparation method and application. The synthesis method is as follows: add butene glycol, 4,4'-diaminobenzylbenzene-2,2'-disulfonic acid, (2-acrylamidoethyl) phosphonic acid, potassium dihydrogen phosphate, deionized water in the first reactor, stir evenly, and adjust pH7-8; add (3-acryloxypropyl) tris(trimethylsiloxy) silane, deionized water, hydroxypropyl methylcellulose, OP-10, potassium dihydrogen phosphate in the second reactor, and adjust pH7-8; add initiator to the high-position drip tank, add dropwise to the second reactor, and when the viscosity starts to rise, quickly add the first reactor mixed liquid, heat up, and keep warm to react to obtain a viscous liquid; dry and granulate to obtain the product. The present invention has the advantages of simple synthesis, high apparent viscosity, strong shear resistance, good salt resistance and hardness resistance, and good drag reduction effect.

The present invention belongs to the field of oil production technology, and specifically relates to a polymer thickener and its synthesis method and application. The synthesis method is as follows: 4-trifluoromethylcinnamic acid, deionized water, hydroxyethyl cellulose, TX-10, potassium dihydrogen phosphate are added in sequence in a reactor, stirred evenly, and pH7-8 is adjusted; 4,4'-diaminobenzylbenzene-2,2'-disulfonic acid, 2-allyloxymethyl-2-hydroxymethylpropane-1,3-diol, and deionized water are added to the second reactor, stirred evenly, and pH7-8 is adjusted; an initiator is added to a high-position drop-adding tank, added dropwise to the first reactor, and stirred continuously. When the viscosity starts to rise, the mixed liquid of the second reactor is added, and stirring is continued, and then the temperature is raised, and the reaction is kept warm to obtain a viscous liquid; drying and granulation are performed to obtain a product thickener. The present invention has the advantages of simple synthesis, high apparent viscosity, strong shear resistance, and good salt resistance and hardness resistance.

The invention discloses a preparation method of an environment-friendly salt-resistant and high-temperature-resistant filtrate reducer for a long open hole section. The preparation method specifically comprises the following steps: step 1, preparing a first mixed solution; step 2, preparing dispersion liquid; step 3, mixing the first mixed solution and the dispersion solution, and then shearing for 1-2 hours to obtain a shearing solution; step 4, adding the shear fluid into a reaction kettle, introducing nitrogen into the reaction kettle, discharging air in the reaction kettle, keeping the temperature at 70 DEG C, stirring for 10 minutes while keeping the temperature, adding an initiator, and stirring for 10-12 hours to obtain a reaction liquid; step 5, adding the reaction liquid into isopropanol according to a volume ratio of 1: 1.5, stirring for 40 minutes, standing for 2 hours, and filtering to obtain a reaction material; and step 6, washing the reaction material with absolute ethyl alcohol and methanol for 10 minutes respectively, and then drying to obtain the environment-friendly salt-resistant and high-temperature-resistant filtrate reducer for the long open hole section. The problem that an existing filtrate loss agent is poor in filtrate loss reduction performance in a long open hole section is solved.

The invention relates to the field of high polymer materials and oil and gas exploitation, and discloses bisphenol phenolic resin and a preparation method and application thereof, a curing agent composition, an epoxy resin composition and application thereof, and epoxy resin and application thereof. The bisphenol phenolic resin comprises a structural unit A as shown in a formula I and a structural unit B as shown in a formula II, # imgabs 0 # Q is # imgabs 1 #, wherein R1 and R2 are respectively and independently H, CH3, CF3 or CH2CH3; on the basis of the total weight of the bisphenol phenolic resin, the content of the structural unit A is 0-100 wt%, and the content of the structural unit B is 0-100 wt%. The molecular chain of the bisphenol phenolic resin has certain rigidity, and when the bisphenol phenolic resin is used as a curing agent for curing epoxy resin, the compressive strength and the flow conductivity of a cured epoxy resin product can be remarkably improved.

The invention provides biomass coal water slurry and a preparation method thereof. The preparation method comprises the following steps: mixing biomass with quick lime and water, and hydrolyzing to obtain biomass semicoke; then carrying out pyrolysis on the biomass semi-coke to obtain biomass coke; and finally, mixing the biomass coke with pulverized coal, wastewater and a dispersing agent to obtain the biomass coal water slurry. The biomass is sequentially subjected to two-step hydrolysis and pyrolysis, so that the energy density of the biomass can be effectively improved, and the application feasibility of the biomass in the coal water slurry gasification furnace is greatly improved; the coal water slurry dispersing agent has the advantages that the coal water slurry dispersing agent is added, the grindability and slurry forming property of biomass are improved, the apparent viscosity of the coal water slurry can be reduced, the slurry forming concentration of the coal water slurry is increased, the use amount of the coal water slurry dispersing agent is reduced, the cold gas efficiency of a coal water slurry gasification furnace can be improved during subsequent coal water slurry gasification, and the economic cost is obviously reduced.

The present invention relates to the field of polymer materials, and in particular to a composite material for a ship propulsion system and a preparation method thereof. The composite material comprises the following components, measured by weight: 45-60 parts of ultra-high molecular weight polyethylene, 5-10 parts of perfluoropolyether acrylate copolymer, 10-15 parts of ethylene-octene copolymer elastomer, 3-5 parts of nitrile rubber, and 4-8 parts of ionic liquid grafted MXenes. According to tests, the composite material prepared by the present invention has a lower dry friction coefficient and a wet friction coefficient under water lubrication conditions, a small volume wear rate, and can be suitable for a water-lubricated stern bearing of a ship propulsion system.

This invention discloses an adaptive balancing lifting device for aircraft door assembly and disassembly, belonging to the field of lifting device technology. It includes a lifting frame, lifting components, and a clamping assembly. The clamping assembly is equipped with a flexible component containing magnetofluid and a corresponding excitation component, which can adapt to the curved surface of the door and actively harden to provide reliable clamping. The lifting device also integrates a multi-degree-of-freedom angle adjustment component and a vision-feedback-based active balancing system. Before handling, the clamping angle can be adjusted to align the door using the longitudinal and lateral adjustment components. During handling, a vision camera detects the door's attitude in real time, and the control system drives independent lifting components on both sides for dynamic leveling. Micro-vibrations are absorbed by adjusting the magnetofluid state, achieving adaptive flexible gripping, precise attitude adjustment, and stable anti-sway handling of irregular doors, significantly improving the safety, accuracy, and efficiency of assembly and disassembly operations.

The application discloses a peanut skin extract / chitosan blended solution with antibacterial function and high mechanical property and application in fibers and films, and belongs to the technical field of functional textile materials. The peanut skin extract is prepared by using a solvent extraction method, and then the amino groups on the chitosan and the phenolic hydroxyl groups on the peanut skin extract are combined together through ionic crosslinking, so as to prepare the peanut skin extract / chitosan blended solution. Finally, the peanut skin extract / chitosan blended solution is spun into fibers or cast into films, so as to improve the mechanical property, hydrophobic property, antibacterial property and the like of the fibers and the films.

This invention relates to the field of interventional medical devices and precision fluid control technology, specifically to an auxiliary device for catheter and guidewire processing in an interventional catheterization lab. It comprises a mechanical actuator, a data acquisition module, a pneumatic adjustment module, and a controller. The system, through the cooperation of a fluid drive unit and a flexible variable boundary unit, utilizes a spiral flow channel to transform the fluid into a spiral jet with axial thrust. Its core principle is to use a fluid medium as the sole power medium, replacing traditional solid-mechanical contact. This invention completely eliminates the physical damage to the guidewire's micron-level hydrophilic coating caused by roller clamping, effectively ensuring the integrity and lubrication performance of the interventional device.