1235results about "Microcapsule preparation" patented technology

The invention discloses a multi-shell photo-thermal phase change microcapsule and a preparation method thereof, the multi-shell photo-thermal phase change microcapsule comprises a capsule wall and a capsule core, the capsule core is an organic phase change material, the capsule wall comprises a titanium dioxide layer, a graphene layer and a polydopamine layer, the graphene layer is located outside the titanium dioxide layer, and the polydopamine layer is located outside the graphene layer. The multi-shell photo-thermal phase change microcapsule disclosed by the invention can realize full-wave band capture, and is high in photo-thermal conversion efficiency and good in shell stability.

A treatment composition that includes a treatment adjunct and a population of core / shell delivery particles, where the shell is made from an acid-treated chitosan and a cross-linking agent, where the acid-treated chitosan results from treating chitosan with a weak acid, or even a mixture of a strong acid and a weak acid. Related methods of making and using such compositions.

The invention relates to the technical field of controlled-release microcapsules, and particularly discloses a pH-responsive mold-targeted controlled-release essence microcapsule for daily chemicals and a preparation method thereof.The preparation method comprises the following steps that S1, chitosan is dissolved with an acid solution, a catalyst and a pH sensitive reagent are added under the protective atmosphere for a reaction, and a pH-responsive graft copolymerization product is obtained through separation and purification; s2, mixing the pH response graft copolymerization product, a cross-linking agent and a mould targeting reagent for reaction, and dialyzing and purifying to obtain a microcapsule wall material; and S3, emulsifying essence by using an emulsifier, and then adding a defoaming agent, the microcapsule wall material, the sodium tripolyphosphate aqueous solution and a pH regulator to prepare the pH-responsive mold-targeted controlled-release essence microcapsule for daily use. The microcapsule integrates specific recognition targeting ability and pH response release ability to mould, and can accurately release natural essence with bacteriostatic and aromatic functions at the mould breeding part of clothes, so that the dual effects of bacteriostasis and aroma retention are realized.

The invention belongs to the field of functional composite fabrics, and provides a mosquito-repellent thermoplastic polyurethane composite fabric and a preparation method thereof.According to the mosquito-repellent thermoplastic polyurethane composite fabric and the preparation method thereof, the design that mosquito-repellent microcapsules of a core-shell structure are dispersed in a thermoplastic polyurethane hot melt adhesive layer is adopted, a microcapsule core layer comprises mosquito-repellent active ingredients such as icaridin, deet or dimethyl phthalate, and the mosquito-repellent active ingredients are dispersed in a thermoplastic polyurethane hot melt adhesive layer; the shell layer is made of a polyurea material and is prepared through an interfacial polymerization method, high-load stable dispersion and controllable dot matrix film forming of the microcapsule in a hot melt adhesive system are achieved, the content of the microcapsule can reach 0.5-15 wt%, the particle size is controlled to be 0.1-2.0 m, the drug loading capacity reaches 10-60 wt%, the problem that the mosquito-repelling microcapsule is prone to damage and failure in the high-temperature melting mixing and hot-pressing compounding process is solved, and the mosquito-repelling microcapsule has good application prospects. The prepared composite fabric is high in mosquito repelling rate, still keeps an effective mosquito repelling function after being washed for multiple times, and has a wide application value.

The invention relates to a novel method for preparing microcapsule slurry. The microcapsule slurry is also an object of the invention. Perfuming compositions and consumer products, in particular perfumed consumer products in the form of home care or personal care products, comprising the microcapsule slurry are also part of the invention.

The invention provides a capsule and a preparation method thereof, the capsule comprises a core material and a rubber sheet wrapping the core material, the core material comprises an aqueous liquid preparation, an oily preparation and a structuring agent; the structuring agent comprises cellulose and / or a cellulose derivative, a low-molecular-weight lipid and a surfactant; the core material is paste, colloid or a solid-liquid mixture, and the core material can realize that the aqueous liquid preparation is stably dispersed and fixed in the oily preparation, so that the core material is stably wrapped by the rubber skin. The invention also discloses an aerosol generating product using the capsule.

The invention discloses microcapsule powder for covering the oil smell of euphausia superba oil and a preparation method of the microcapsule powder, and belongs to the field of euphausia superba oil processing. The microcapsule powder is composed of 50-75% of OSA starch, 10-30% of euphausia superba oil, 3-20% of sodium alginate, 1-10% of succinic acid and 0.5-5% of calcium hydrophosphate, during preparation, the OSA starch is gelatinized and then sheared and homogenized with the euphausia superba oil to obtain a miniemulsion, the succinic acid, the sodium alginate and the calcium hydrophosphate are prepared into a mixed solution, the mixed solution is mixed with the miniemulsion in proportion, and spray drying is performed to obtain a finished product. An OSA starch-sodium alginate double-wall material system is adopted, a compact cross-linked layer is formed through pH response, peculiar smell substances such as trimethylamine can be completely masked, the astaxanthin retention rate is up to 95.14%, the embedding rate reaches 89.48%, krill oil oxidation is effectively inhibited, krill oil is converted into powder, the stability and the sensory property are improved, application of krill oil in the food field is widened, the technology is simple, and the method is suitable for industrial production. The method is suitable for industrial production.

The invention discloses a core-shell structure P (MMA-MBA) copolymer heat-storage phase-change microcapsule, the microstructure is of a spherical structure, the core-shell structure is adopted, the core structure is hexadecane, the shell structure is a methyl methacrylate (MMA) and N, N-methylene bisacrylamide (MBA) copolymer, the emulsifier is lauryl sodium sulfate (SDS), the initiator is potassium persulfate, and the pH value of the core-shell structure P (MMA-MBA) copolymer heat-storage phase-change microcapsule is 7-8. And the coating efficiency is 70-75%. The preparation method comprises the following steps: 1, preparing an oil phase and a water phase; and 2, polymerization reaction of the microcapsule. A phase change cement material based on a core-shell structure P (MMA-MBA) copolymer heat storage phase change microcapsule is prepared by compounding the P (MMA-MBA) copolymer heat storage phase change microcapsule and a cement matrix, and has hydrophobicity; obvious weightlessness exists in two times.

This invention discloses a method for preparing a microcapsule-based photothermal self-healing anti-icing coating, belonging to the field of functional coating materials technology. The method includes: obtaining the core material and wall material composition parameters of the microcapsules, and collecting the polyacrylamide concentration and dopamine polymerization time; constructing a morphology-photothermal correlation model of the microcapsules to obtain the predicted photothermal conversion efficiency; performing multi-objective optimization on the core and wall material composition parameters with the target photothermal conversion efficiency as a constraint, and iteratively inverting to obtain the optimal microcapsule configuration; preparing primary microcapsules and composited with a dopamine photothermal modification layer on their surface to obtain a photothermal self-healing microcapsule additive; mixing the photothermal self-healing microcapsule additive with an epoxy resin-based coating at an adaptive mass ratio, coating and curing to obtain an anti-icing coating. This invention achieves accurate prediction of the photothermal conversion efficiency of microcapsules and intelligent optimization of composition parameters, obtaining an anti-icing coating with both high photothermal conversion efficiency and rapid self-healing capability.

The invention discloses a mechanical property regulation and control method of an aromatic microcapsule, and belongs to the technical field of microcapsules. The preparation process of the microcapsule comprises the following steps: self-assembling CNC and an amino-functionalized polymer ligand on an oil-water interface to form a stable Pickering emulsion. Wall materials are deposited on the surfaces of emulsion droplets in situ, the CNC interface coverage rate is regulated and controlled by adjusting parameters such as the ligand concentration and the emulsion water phase pH value, and then a series of aromatic microcapsules with different mechanical properties are prepared. In addition, the functional microcapsules can be designed in a customized manner according to different application requirements, and good application prospects are shown.

The invention discloses aerogel thermal-insulation waterproof mortar and a preparation method thereof. The mortar is prepared from cement, hydrophobic aerogel, interface modified asphalt rubber powder, a composite phase change heat conduction material, blast furnace slag micro powder, silica fume, nano montmorillonite, titanium dioxide aerogel powder, expanded vermiculite, shape memory polymer emulsion, chitosan, charcoal powder, carbon fibers, basalt fibers and the like. The preparation method comprises the following steps: carrying out plasma treatment and modification with an organosilicon waterproofing agent to obtain hydrophobic aerogel; carrying out interface modification on the asphalt rubber powder by adopting a titanate coupling agent; a phase change microcapsule-carbon nanotube heat conduction network is constructed through ball milling compounding; a basic framework is formed by adopting a graded mixing process, and then functional components are introduced; and finally, realizing cross-linking curing of the shape memory polymer and the chitosan through ultrasonic assistance and programmed temperature control. The mortar prepared by the invention realizes integration of multiple functions, and effectively solves the technical problems of single performance and poor durability of a traditional thermal insulation material.

The invention relates to the technical field of new energy automobile power battery thermal management, in particular to a hydrated salt phase change microcapsule for a power battery and a preparation method of the hydrated salt phase change microcapsule. According to the specific technical scheme, hydrated salt serves as a core material, methyl methacrylate serves as a shell material monomer, the monomers are polymerized on the surfaces of hydrated salt liquid drops to form a polymethyl methacrylate shell layer through an interfacial polymerization method, effective packaging of a phase change material (hydrated salt) is achieved, and the microcapsule with high phase change latent heat, low leakage rate and long cycle life is obtained. In addition, other doped auxiliary materials are deposited on an oil-water interface to improve the heat conductivity of the microcapsule. And mixing the microcapsules with heat-conducting oil to prepare suspension liquid, and driving the suspension liquid to circularly flow between the power battery packs by a peristaltic pump. According to the invention, microcapsules and liquid cooling heat dissipation are combined to provide a new thought and practical and effective temperature control and heat dissipation effects for a heat management scheme of the power battery pack.

The invention discloses a fire extinguishing microcapsule with an EVA ultraviolet crosslinking barrier material as a wall material and a preparation process of the fire extinguishing microcapsule. According to the fire extinguishing microcapsule with the EVA ultraviolet crosslinking barrier material as the wall material, the whole fire extinguishing microcapsule is spherical or sphere-like, a composite material of EVA and graphene is used as the wall material, a core material is wrapped in the wall material, the thickness of the wall material is 10-50 microns, and the diameter of the fire extinguishing microcapsule is 300-500 microns. The excellent gas barrier property of the EVA and graphene composite wall material is utilized, volatilization of perfluorohexanone is effectively blocked, the storage stability of the fire extinguishing microcapsule is improved, the service life of the fire extinguishing microcapsule is prolonged, and the effective content of a fire extinguishing agent during fire extinguishing is guaranteed.

The invention provides a core-shell microsphere for feed detoxification and a preparation method and application thereof.The core-shell microsphere comprises a sclerotium layer, a magnetic shell layer and a catalytic layer from inside to outside, and the sclerotium layer is composed of bacillus licheniformis and lactobacillus rhamnosus composite flora and a chitosan-sodium tripolyphosphate semipermeable membrane wrapping thalli; the magnetic shell layer is a Fe3O4 nano-particle coating, and the catalytic layer is a porous Mn-Ce-O shell. The microspheres have the double functions of biodegradation and chemical catalysis, the internal flora can degrade various toxins, the external catalytic layer efficiently decomposes stubborn toxins, the magnetic layer realizes rapid magnetic separation and recovery, and the microspheres are suitable for removing mycotoxins from feed raw materials such as corn and soybean meal.

The invention provides a microcapsule type self-early-warning and self-repairing epoxy coating as well as a preparation method and application thereof, and belongs to the technical field of anticorrosive coatings. The method comprises the following steps: mixing urea, resorcinol, ammonium chloride and a polyethylene grafted maleic anhydride aqueous solution, and adjusting the pH value of the mixed solution to obtain a water phase; mixing the PU prepolymer, DCF, TO and ethyl phenylacetate to obtain an oil phase; the water phase and the oil phase are mixed, a formaldehyde solution is added into the mixed solution for a reaction, and microcapsules are obtained; and adding the microcapsule into the epoxy coating to obtain the microcapsule type self-early-warning and self-repairing epoxy coating. According to the microcapsule, PU / UF serves as a shell of DCF and TO, DCF serves as an early warning agent, and TO serves as a repairing agent; the DT coated PU / UF microcapsule has good dispersibility in the coating, when the coating is damaged, the microcapsule is broken to release DCF and TO, the self-early warning and self-repairing performance of the coating is achieved, and metal corrosion is delayed.

The invention relates to astaxanthin microcapsule powder adopting a freeze spray drying technology and a production process of the astaxanthin microcapsule powder, and discloses the astaxanthin microcapsule powder which realizes astaxanthin activity protection, powder forming and continuous industrial preparation under a low-temperature condition through a synergistic strategy of embedding a composite wall material and regulating emulsion stability by glycerol, and the production process of the astaxanthin microcapsule powder. The astaxanthin microcapsule powder adopting the freeze spray drying technology is characterized by comprising the following components in parts by weight: 1-3 parts of astaxanthin oil, 20-40 parts of a wall material system, 0.2-0.5 part of an emulsifier, 0.1-0.3 part of an antioxidant and 30-50 parts of a water-phase medium, the wall material system is a composite wall material system and comprises gelatin, maltodextrin and hydroxypropyl-beta-cyclodextrin, and the water-phase medium is a water-phase medium. The wall material comprises gelatin, maltodextrin and hydroxypropyl-beta-cyclodextrin, and the gelatin accounts for 40%-60%, the maltodextrin accounts for 30%-50%, and the hydroxypropyl-beta-cyclodextrin accounts for 10%-20%.

The invention provides a multilayer lutein ester liposome as well as a preparation method and application thereof, and belongs to the field of food processing. The multi-layer lutein ester liposome is prepared from the following raw materials: 30 to 50 parts of lutein ester, 40 to 60 parts of soybean phosphatidylcholine, 5 to 20 parts of cholesterol, 10 to 25 parts of starch sodium octenylsuccinate, 20 to 40 parts of trehalose, 15 to 30 parts of mannitol, 4 to 10 parts of phosphatidyl glycerol, 1 to 2 parts of vitamin E acetate and 1 to 2 parts of ascorbyl palmitate. According to the present invention, through the specific food-grade raw material composition and the accurate ratio relationship, the comprehensive delivery system is constructed for the highly hydrophobic and unstable lutein ester, and the system synchronously achieves the high encapsulation efficiency, the excellent stability, the good water dispersibility and the slow release function.

The invention discloses a surface low-energy silicon dioxide shell phase change microcapsule, a moisture resistance control construction method and application thereof. Firstly, core-shell structure microcapsules with octadecane as a heat energy storage core material and silicon dioxide as a protective shell layer are prepared through an interfacial polymerization method, and phase change microcapsule powder is obtained. And then, constructing an alkylated low-energy interface layer on the surface of the microcapsule shell by utilizing an organosilane hydrolysis-condensation reaction. The phase change microcapsule treated by the method can effectively inhibit a shell layer from adsorbing free moisture in a humid environment, alleviate the phenomenon of interface instability at the initial stage of cement hydration, and improve the construction fluidity and circulating energy storage durability of a cement-based material. Meanwhile, the composite can be used as functional microparticles to be applied to building outer surface coatings, and antifouling, anti-infiltration and photo-thermal regulation and control effects are achieved. The method is simple, convenient and high in adaptability, large-scale production can be achieved, and a new solution is provided for construction of building functional materials with energy conservation, energy storage and interface stability.

A continuous nanoparticle processing system includes a continuous flow path between an inlet and an outlet. The system has at least one sensor positioned to generate a signal indicative of a quality attribute of nanoparticles within the flow path, at least one actuator coupled to the flow path; and a controller operatively coupled to the sensor and the actuator and configured to, during operation, adjust the actuator in response to the signal to maintain the quality attribute of the nanoparticles within a target range while the nanoparticles traverse the flow path. A computer program product is disclosed.

This invention discloses a method for preparing high-purity phenolic resin carbon microspheres, belonging to the field of battery material technology. The method mainly includes the purification, polymerization, separation, drying and carbonization of raw materials. The resin carbon microspheres obtained by the method of this invention have high density, high purity, good strength, ash content of less than 0.01%, and total content of trace elements (iron, cobalt, chromium, nickel, zinc) of less than 100 ppb. They can be used as precursors for silicon-carbon, phosphorus-carbon and hard carbon anode materials.

A kind of high durability airport pavement quick repair composition and preparation method and quick repair method, by mass parts, quick repair composition includes cementitious material 80-130 parts, aggregate 90-120 parts, fiber material 10-20 parts, functional material 15-40 parts;Fiber material includes at least one of PVA fiber, cellulose fiber;Functional material includes polyacrylate, calcium carbonate, active titanium dioxide and self-repairing microcapsule;Self-repairing microcapsule, 15-50% of the total mass of functional material, including repair core layer, resin shell layer and the fiber repair layer adhered to the surface of resin shell layer, repair core layer includes inorganic repair mixture, resin shell layer includes toughened resin composition.The application utilizes the quick repair composition with excellent comprehensive performance and the quick repair method adapted, ensures that repair layer and old base form strong and tough interface synergistic effect, simultaneously realizes to crack high-efficiency trigger, environmental robust and long-acting stable self-repairing function.

The application relates to the field of films, and discloses a phase-change waterproof and breathable packaging film and a preparation method and application thereof. The phase-change waterproof and breathable packaging film comprises the following raw materials in parts by weight: hydrophilic TPU particles, 100 parts; phase-change microcapsules with a particle size of 100-350 microns and a phase-change temperature of 50-60 DEG C, 5-25 parts; polyurethane hydrogel, 10-45 parts; and a pore former with a particle size of 0.1-1 micron, 3-20 parts. The phase-change waterproof and breathable packaging film is specially designed for the long-acting moisture control material of the applicant. The phase-change waterproof and breathable packaging film has a moisture absorption and heat storage function, and can prevent the long-acting moisture control material from releasing a large amount of moisture when the ambient temperature rises after the long-acting moisture control material is packaged, thereby preventing the vehicle lamp from fogging, and meeting the application requirements of the vehicle lamp.

This invention provides a microcapsule-based deodorizing cat litter, a concentrated granular cat litter, its preparation method, and its application, belonging to the field of cat litter preparation technology. The invention uses a complex of modified starch, gum arabic, polyvinylpyrrolidone, and sorbitol as the wall material to encapsulate fragrances and / or enzymes, resulting in microcapsules. The cat litter prepared from these microcapsules achieves intelligent targeted deodorization. The wall material ruptures upon contact with moisture in urine or feces, precisely releasing the active ingredients, allowing for a slow and continuous release of the deodorizing components. The cat litter provided by this invention exhibits excellent deodorization, as well as good water absorption, dust control, and clumping properties. This cat litter successfully balances superior functionality, production feasibility, and cost control, making it a high-end cat litter with significant market potential.

The utility model discloses a liquid nitrogen quick-frozen microsphere screening device, and aims to improve the screening and counting efficiency in the field of biological medicine liquid nitrogen drop quick-frozen microspheres. The device comprises a liquid nitrogen container, a double-layer microsphere screening device and a microsphere counting device. The liquid nitrogen container is in an open barrel shape, the inner container is used for storing liquid nitrogen, and the shell heat preservation layer reduces heat transmission. The microsphere screening device is composed of two layers of screens with different pore diameters, the first layer is used for filtering microspheres with the diameter larger than that of the microspheres (sd is the standard deviation and the average diameter of the microspheres), the second layer is used for filtering microspheres with the diameter smaller than that of the microspheres, and the second layer of screen is designed to be inclined by 15-30 degrees so that the microspheres can move and gather conveniently. The microsphere counting device is a transparent pipeline, the number of microspheres is determined by calculating the length of the pipeline and the diameter of the microspheres, and rapid counting and split charging are achieved. The problems that in the prior art, quick-frozen microspheres in liquid nitrogen cannot be filtered and screened, and the quick-frozen microspheres cannot be counted and subpackaged are solved.

The invention belongs to the technical field of biological medicine, and discloses a dry blood spot liquid chromatography-mass spectrometry detection method adaptive to 7 metabolites. According to the method, a pH / polarity double-trigger microcapsule solvent carrier system is adopted, high-polarity extraction solvents, medium-polarity extraction solvents and low-polarity extraction solvents are packaged in the pH / polarity double-trigger microcapsule solvent carrier system in a layered mode, the solvents are released in sequence according to local pH and polarity changes in the extraction process, and amino acid, acyl carnitine, organic acid, bile acid, steroid, fatty acid and glycometabolism intermediate products are efficiently extracted respectively. The method disclosed by the invention breaks through the inherent limitation of a traditional static solvent system, solves the problem of unbalanced recovery rate caused by insufficient solvent suitability in dry blood spot extraction of seven metabolites with great polarity span, and remarkably improves the accuracy, reproducibility and coverage range of a DBS-LC-MS / MS platform in synchronous detection of multi-component metabolites; and reliable technical support is provided for newborn inherited metabolic disease screening, endocrine disease diagnosis and drug metabolism research.

A negative electrode active material which includes a silicon-based composite represented by SiOa (0≤a<1), and a carbon coating layer distributed on a surface of the silicon-based composite, and which has a bimodal pore structure including nanopores and mesopores. In a lithium secondary battery including the negative electrode active material, an oxygen content in the silicon-based composite can be controlled to improve initial efficiency and capacity characteristics, and a specific surface area can also be controlled, and thus a side reaction with electrolyte can be reduced.

The invention relates to the field of biological detection, in particular to microspheres and a preparation method and application thereof. The invention provides a preparation method of magnetic polymer microspheres. The preparation method comprises the following steps: S1, obtaining magnetic microspheres with carboxyl groups; s2, activating the magnetic microspheres with carboxyl in the step S1 to obtain activated magnetic microspheres; s3, mixing the activated magnetic microspheres obtained in S2 with a first compound and a second compound, reacting, and collecting the microspheres to obtain the magnetic polymer microspheres, the first compound and the second compound competitively react with the carboxyl of the activated magnetic microspheres. The preparation method provided by the invention is simple and convenient to operate, mild in condition and good in repeatability, and the prepared microspheres are accurate and controllable in carboxyl density and uniform in distribution, have the advantages of high magnetic responsiveness, good dispersity, dispersion stability, good biocompatibility and the like, and can be widely applied to the fields of biological separation, diagnosis and the like.

The present invention provides a microcapsule composition comprising at least one core-shell microcapsule, wherein the at least one core-shell microcapsule comprises a core comprising at least one benefit agent and a shell surrounding the core, wherein the shell comprises a resin formed by the reaction of: 5 - a Michael acceptor which is the reaction product of a biodegradable polyester polyol with an α,β-unsaturated acid chloride; and - a Michael donor comprising at least two nucleophilic moieties selected from the group consisting of a nitrogen nucleophile, a sulfur nucleophile, an oxygen nucleophile, a carbon nucleophile, a phosphorus nucleophile, and mixtures thereof, which are capable to react with the 10 acrylic double bond of the Michael acceptor. The invention also relates to consumer products comprising the microcapsule composition, a method for preparing the microcapsule composition and to the use of the microcapsule composition to enhance the performance of a benefit agent in a consumer product.

The disclosure relates to a method of producing a composite particle. The method comprises contacting a catalyst particle, an oxidant and a plurality of monomers. The oxidant is a peroxide, a persulfate or ozone, and the catalyst particle is or comprises a material which possesses Fenton or Fenton-like catalytic activity. The catalyst particle catalyses the disproportionation of the oxidant to create an oxygen-radical species, which then initiates a polymerisation reaction and thereby causes the plurality of monomers to polymerise, and thereby form a polymeric shell around the catalyst particle. The invention extends to composite particles produced by the method, apparatuses comprising the composite particles and uses thereof.

Hollow particles P and processes for producing the same. Where the hollow particle P is constructed of a hollow core K and a shell H which is made of a silicone resin composition Z that includes a condensation-crosslinked silicone composition X and a particulate solid F.