271 results about "Emulsion droplet" patented technology

The invention discloses a multilevel-structure phenolic resin material, a multilevel-structure carbon material and a preparation method, and the preparation method comprises the following steps: (1) mixing a mixture containing a surfactant, a cosurfactant, an organic solvent and water to obtain spherical emulsion droplets; and (2) adding a phenolic resin precursor and ammonia water into the spherical emulsion liquid drops, reacting, centrifuging, washing with alcohol, and drying to obtain the phenolic resin material with the multilevel structure. According to the preparation method, spherical emulsion droplets are used as soft templates, the phenolic resin material with the multilevel structure is synthesized in a one-pot liquid phase through multilevel sequential dynamic assembly on a water-oil interface, and the derivative carbon material subjected to heat treatment also maintains the original multilevel structure and morphology, is good in dispersity and has an adjustable polyhedral structure, an adjustable opening degree and an adjustable pore size.

The invention discloses a method for determining the critical safety diameter of an emulsion drop of a liquid energetic material synthesis reaction conveying pipeline, which comprises the following steps of: curing and heating a sampled emulsion, determining pyrolysis kinetic parameters of the detected emulsion, constructing a heat production and heat transfer heat insulation system model of a mixed solution of an acid ester emulsion and the emulsion drop by utilizing Comsol, and determining the critical safety diameter of the emulsion drop of the liquid energetic material synthesis reaction conveying pipeline. Calculating a temperature rise change rule of the mixed liquid heat insulation system under different emulsion droplet sizes, determining a function relationship between the emulsion droplet particle size and the temperature rise of the mixed liquid heat insulation system, and deriving to obtain the critical safety diameter of the emulsion droplet; the method comprises the following steps: adsorbing emulsified liquid by using a porous particle material, testing whether the emulsified liquid explodes due to collision and friction of emulsified liquid with different pore diameters at different rates in an impact tank-piston device to obtain the relationship among the movement rate of emulsified liquid drops, the particle size of the emulsified liquid drops and the explosion risk, and determining the explosion risk of the emulsified liquid drops under a specific conveying speed condition according to the relationship. The liquid energetic material is used for synthesizing the optimal size of emulsified liquid drops in a reaction mixed solution.

The invention discloses a water-based acrylate pressure-sensitive adhesive emulsion as well as a preparation method and application thereof, and the preparation method comprises the following steps: S1, providing an acrylate pre-emulsion A and an initiator solution B; s2, dropwise adding a part of the acrylate pre-emulsion A into the initiator solution B, and carrying out a heating reaction to obtain a polymer A emulsion; s3, providing a monomer composition B, and mixing the rest of the acrylate pre-emulsion A and the monomer composition B to obtain an acrylate pre-emulsion B; and S4, dropwise adding the acrylate pre-emulsion B into the polymer A emulsion, and heating for reaction to obtain the water-based acrylate pressure-sensitive adhesive emulsion. The water-based acrylate pressure-sensitive adhesive emulsion prepared by the preparation method disclosed by the invention has relatively good adhesiveness, mobility and PVC shrinkage resistance after being coated on a PVC base material.

The present invention relates to the technical field of polymer functional materials, and in particular to a micron-sized polymer microsphere and a preparation method and application thereof. First, a core layer emulsion is prepared by using a mixed monomer A under the action of an initiator, and then a shell layer emulsion is prepared by using a mixed monomer B. The shell layer emulsion is added dropwise to the core layer emulsion to form a micron-sized polymer microsphere under the action of an initiator. The micron-sized polymer microsphere of the present invention has good heat resistance and flame retardancy, good mechanical properties, can resist high temperature shrinkage, and has uniform and stable size.

The invention provides a polycaprolactone microsphere as well as an interfacial membrane emulsification preparation method and application thereof, and the interfacial membrane emulsification preparation method comprises the following steps: firstly, respectively preparing a dispersion phase containing polycaprolactone and a continuous phase containing a surfactant, and then centrifugally mixing the dispersion phase containing polycaprolactone and the continuous phase containing the surfactant in a planetary centrifugal emulsifying machine to form emulsion droplets; and finally, stirring the emulsion droplets to volatilize the organic solvent, washing with water, centrifuging and drying to obtain the polycaprolactone microspheres. The interfacial membrane emulsification preparation method is simple in process, convenient to operate and short in consumed time, and meanwhile, the prepared polycaprolactone microspheres are very uniform in particle size distribution, relatively narrow in particle size distribution, good in sphericity and good in application prospect, and the appearance of the polycaprolactone microspheres is of a spherical structure.

The invention relates to the technical field of emulsion preparation, and discloses a metal-polyphenol network graphene oxide Janus nanosheet as well as a preparation method and application thereof, GO JNSs is taken as a solid emulsifier to encapsulate EOs, the problems that EOs are easy to volatilize and poor in water solubility at normal temperature can be solved, and the metal-polyphenol network graphene oxide Janus nanosheet and auxiliaries in a system can achieve a synergistic effect to resist bacteria. The Pickering emulsion containing GO JNSs has good emulsion stability, has excellent hydrophilicity and adhesion performance of polyphenol, can significantly enhance the wetting and spreading effects of emulsion droplets on leaf surfaces, and inhibits rebounding and splashing of the liquid droplets. The preparation process of the GO JNSs and the JNSs-EU-PE is simple, the process is environment-friendly, and the GO JNSs and the JNSs-EU-PE have industrial production prospects.

The utility model provides a double-emulsification high-flux micro-fluidic chip. The double-emulsification high-flux micro-fluidic chip comprises a substrate, a middle layer and a cover plate, according to the utility model, the substrate is not processed, the main micro-channels are processed on the two sides of the middle layer, and the cover plate is punched, so that fluid can be conveniently introduced. A plurality of liquid drop generation units based on the flow focusing technology are designed on one side of the middle layer so as to generate liquid drops for the first time, and a stepped liquid drop generation structure based on interfacial tension is designed on the other side of the middle layer so as to generate liquid drops for the second time. The structures on the two sides of the chip are connected through the through holes. The preparation method comprises the following steps: carrying out photoetching to form a mold, preparing the middle layer by using the mold, forming the required micro-channels on the two sides of the middle layer, punching on the cover plate, and finally bonding the substrate, the middle layer and the cover plate. Through the design of the flow channel and the structure, a large number of double-emulsion droplets can be rapidly prepared, the production efficiency is improved, and the double-emulsion droplet preparation device is suitable for various applications such as drug delivery and biological research.

The utility model provides a multi-core emulsion droplet preparation chip and an emulsion droplet preparation system, the multi-core emulsion droplet preparation chip comprises a first glass chip and a second glass chip, the first glass chip is internally provided with a first micro-channel, the second glass chip is internally provided with a second micro-channel, and a multi-core emulsion droplet preparation process is carried out. The first microchannel and the second microchannel are respectively subjected to corresponding hydrophilic and hydrophobic modification treatment, and then the first glass chip and the second glass chip are spliced and butted, so that the required multi-core emulsion droplet preparation chip can be formed, and compared with the related technology, the multi-core emulsion droplet preparation chip is simple in manufacturing process, high in yield, convenient and reliable in modification operation and suitable for large-scale production. And the use performance is obviously improved.

The invention discloses a dual-mode micro-droplet generation micro-fluidic chip and application thereof in generation of dual-emulsion droplets, and relates to the technical field of micro-fluidic chips. The method comprises the following steps: respectively injecting two different internal phase solutions from the left ends of respective iron tubes, guiding the internal phase solutions to a wedge-shaped tube orifice of a theta-shaped glass capillary tube through respective thin tubes, injecting an intermediate phase solution into a square glass tube through an intermediate phase inlet by using a No.1 needle, and injecting an external phase solution into the square glass tube through an external phase inlet by using a No.2 needle; the two internal phase solutions, the intermediate phase solution and the external phase solution converge at an inlet of the circular glass capillary tube, and after entering the circular glass capillary tube, water-in-oil-in-water double-emulsion droplets are obtained. The invention can obtain the dual-mode micro-droplet generation micro-fluidic chip and the application of the dual-mode micro-droplet generation micro-fluidic chip in generation of dual-emulsion droplets.

The invention relates to the technical field of medicines, and discloses an inflammation response type drug-loaded microgel system with a slow release characteristic. A construction method of an inflammation response type drug-loaded microgel system with a slow release characteristic comprises the following steps: taking a solvent I dissolved with active drug components and carrier micromolecules as an oil phase, taking an aqueous solution II containing an emulsifier as a water phase, and mixing the oil phase and the water phase to form oil-in-water type emulsion droplets; after the oil-in-water type emulsion droplets are generated, removing the organic solvent in the emulsion droplets to realize droplet shrinkage, and in the droplet shrinkage process, self-assembling the carrier micromolecules and the active pharmaceutical ingredients to form the drug-loaded gel microspheres. According to the inflammation response type drug-loaded microgel system with the slow release characteristic, active drug components are effectively packaged in nanofibers, the active drug components are prevented from leaking in advance, the stability and bioavailability of drugs are improved, and meanwhile, the drug-loaded microgel microspheres have an enzyme response release mechanism and can be released according to needs, and the residence time is prolonged.

The invention discloses a self-assembled organic material crystal incubation method based on double-emulsion droplets, which comprises the following steps: preparing W / O / W type double-emulsion droplets with uniform size through a micro-fluidic chip, in the preparation process of the double-emulsion droplets, taking a self-assembled organic material solution as an inner water phase solution, taking an intermediate oil phase solution as a water-insoluble solution, and taking a micro-fluidic chip as an outer water phase solution; a self-assembled organic material solution is packaged by using an external water phase solution with higher salt concentration, so that the self-assembled organic material is prevented from being dissociated into the external water phase solution, and double emulsion drops loaded with the self-assembled organic material solution are incubated. By utilizing the concentration difference between the external water phase solution and the internal water phase solution, under the influence of osmotic pressure, water molecules in the internal water phase solution migrate to the external water phase, and the concentration of the self-assembled organic material in the double-emulsion liquid drops is also increased, so that the growth of the self-assembled organic material crystal is promoted; finally, self-assembled organic material crystals with uniform sizes are obtained in the double-emulsion droplets, and each double-emulsion droplet contains a single self-assembled organic material crystal.

The invention relates to the technical field of water-soluble polymers, in particular to a preparation method of a low-temperature-resistant water-in-water emulsion, which comprises the following steps: mixing acrylamide, an anionic monomer, a hydrophobic monomer, a dispersing agent, a chain transfer agent and water, adjusting the pH value, mixing with a stabilizer, introducing nitrogen, sequentially adding an oxidizing agent and a reducing agent to initiate a polymerization reaction, and cooling to obtain the low-temperature-resistant water-in-water emulsion. Quickly adjusting the stirring speed when the viscosity of the mixed system is increased, always keeping vortex at the center of the liquid level in the reaction process, and adjusting the stirring speed to continue the reaction after the polymerization system forms emulsion drops; and when the temperature of the polymerization system begins to reduce, adding an excessive amount of a reducing agent into the reaction system to continue the reaction, and obtaining the low-temperature-resistant water-in-water emulsion after the reaction is finished. The emulsion has the advantages of low apparent viscosity, high dissolution speed, small environmental damage, low temperature resistance and the like.

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 a composite adjuvant, and belongs to the field of vaccine adjuvants. The main active components of the composite adjuvant are squalene, polysorbate 80 and monophosphoryl ester A, the composite adjuvant is in an oil-in-water emulsion form, nano-scale emulsion droplet particles are uniformly distributed in a water phase, and the system is stable. The invention also discloses a preparation method of the composite adjuvant based on a stirring method. The composite adjuvant comprehensively utilizes the dual characteristics of the oil-in-water emulsion and the immunopotentiator, and can induce a higher level of immunoreaction when being combined with the antigen, so that the composite adjuvant can be used for preparing vaccines and improving the effectiveness of the vaccines.

The invention discloses low-fat gel type Pickering two-phase emulsion foam, a preparation method thereof and application of the low-fat gel type Pickering two-phase emulsion foam in dual-nutrient loading and 3D printing, and belongs to the technical field of grease and emulsified fat products. The prepared gel type Pickering two-phase emulsion foam does not contain any synthetic surfactant and trans fatty acid, multi-cavity emulsion droplet and bubble structures coexist, and multi-interface Pickering stabilization endows the system with excellent stability and good plasticity and thermal reversibility. Besides, the foam system can realize high-efficiency co-loading of nutrients, the nutrient co-loading system shows good application potential in 3D printing, high printing precision and high nutrient retention efficiency can be realized, and the performance of a 3D printing object can be adjusted by adjusting the type and content of used fat, so that the 3D printing effect is improved. The development and multifunctional application of healthy and nutritional aerated steady-state fat-based food (non-dairy cream, single cream, ice cream and the like) are greatly widened.

The invention discloses a preparation method of starch-based emulsion gel, the starch-based emulsion gel and a food additive, and relates to the technical field of emulsion gel. The preparation method of the starch-based emulsion gel comprises the following steps: carrying out ozone oxidation treatment on esterified modified starch to obtain double modified starch; mixing the double-modified starch with water, heating and oscillating to obtain double-modified starch gel; and homogenizing and balancing the double-modified starch gel, an oil phase and a calcium ion solution to obtain the starch-based emulsion gel. Ozone oxidation treatment destroys a starch particle structure, more short chains are dissolved out or extended out, keto groups and carboxyl groups of the double-modified starch are increased, hydroxyl groups are reduced, and hydrophobicity and surface charge properties of the double-modified starch are improved, so that the emulsifying capacity of the double-modified starch is improved; the divalent calcium ions can neutralize negative charges of carboxyl among emulsion droplets, enhance hydrogen-bond interaction among starch molecules, and further cross-link the starch molecules through electrostatic interaction and anion bridging, so that the gel structure is induced to be more compact, and emulsion gel is formed.

The invention relates to the technical field of pesticide preparations, and provides a pyriproxyfen-containing nano-emulsion and a preparation method thereof, and the pyriproxyfen-containing nano-emulsion comprises pyriproxyfen, an emulsifier, a thickener, water and an organic solvent. According to the pyriproxyfen-containing nano-emulsion provided by the invention, the nonionic emulsifier with a relatively high HLB (Hydrophile-Lipophile Balance) value and the lipophilic emulsifier with a relatively low HLB value are compounded, so that a mixed adsorption layer can be formed on an oil-water interface, the interfacial tension is effectively reduced, and an oil phase and a water phase are more easily mixed to form the stable nano-emulsion; the strength of an interfacial film of emulsion drops in the nano-emulsion can be improved, so that the external factor resistance of the nano-emulsion is improved, the phenomena of layering, demulsification and the like of the nano-emulsion in the storage process are not easy to occur, and the long-term stability of the emulsion is improved; besides, release and absorption of pyriproxyfen in the nano-emulsion can be optimized, so that the nano-emulsion shows a relatively high diffusion rate, and a relatively good insecticidal effect is more easily exerted.

The application discloses an incubation method of self-assembled organic material crystals based on double emulsion drops, and the method comprises the following steps: preparing W / O / W type double emulsion drops with uniform size through a microfluidic chip; during the preparation of the double emulsion drops, using a self-assembled organic material solution as an inner water phase solution, using a non-water-soluble solution as an intermediate oil phase solution, and using a water phase solution containing a high salt concentration as an outer water phase solution to encapsulate the self-assembled organic material solution, so as to avoid the self-assembled organic material from being free in the outer water phase solution; and incubating the double emulsion drops loaded with the self-assembled organic material solution. By using the concentration difference between the outer water phase solution and the inner water phase solution, under the influence of osmotic pressure, water molecules in the inner water phase solution migrate to the outer water phase, and the concentration of the self-assembled organic material in the double emulsion drops also increases, so as to promote the growth of the self-assembled organic material crystals, and finally, the self-assembled organic material crystals with uniform size are obtained in the double emulsion drops, and each double emulsion drop contains a single self-assembled organic material crystal.

The invention relates to a hydrophilic acrylic pressure-sensitive adhesive. The pressure-sensitive adhesive comprises an acrylic copolymer, polyvinyl alcohol or a derivative thereof, a non-reactive surfactant and a neutralizer according to the solid content of an emulsion, the acrylic copolymer is obtained by copolymerization of n-butyl acrylate, 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, acrylic acid, methyl methacrylate and a boric acid functional monomer emulsion containing a 2, 1-benzoxaborazole group. The preparation method comprises the following steps: dropwise adding a pre-emulsion, lagging dropwise adding an initiator and carrying out thermal-insulation polymerization to obtain a copolymer emulsion, adding polyvinyl alcohol or a derivative thereof at a specific temperature, neutralizing to a specified pH value, and carrying out segmented drying to form the film. The hydrophilic acrylic pressure-sensitive adhesive disclosed by the invention has both hydrophilicity and wet stability while keeping the adhesion performance.

The invention discloses a preparation method of a sodium alginate / polyphenol Pickering emulsion gel bead adsorbent and an adsorption application of the sodium alginate / polyphenol Pickering emulsion gel bead adsorbent. According to the adsorbent, polyphenol particles serve as a stabilizer, light oil serves as an oil phase, sodium alginate serves as a water phase to construct a low-density Pickering emulsion, then the obtained emulsion is dropwise added into a calcium chloride solution to be cured to form gel beads, and the obtained gel beads serve as the adsorbent with the self-suspension property. The self-suspension gel bead adsorbent designed by the invention is regular and controllable in shape, simple and rapid in preparation process, low in cost and easy for industrial production, has excellent adsorption capacity on various pollutants such as organic dyes, heavy metal ions and antibiotics, is simple and convenient to recycle after adsorption, and has a good application prospect in the field of water treatment.

Described are methods and devices for the generation of hydrogel particles with micrometer and submicrometer dimensions using oxygen-inhibited partial polymerization, and the particles generated therefrom. The described methods generate particles with dimensions independent of the starting polymerizable solution dimension, for example, a microdroplet. Further, microfluidic flow parameters (e.g. viscosity, flow rate) and photopolymerization process parameters (e.g. optical exposure intensity and duration) are controlled to generate particles with tunable crosslinking density-determined properties including elasticity, diffusivity, and biomolecular display for diverse applications such as drug delivery, tissue engineering cell scaffolds, and single- and multiple-cell therapeutics. Similarly, gradients of crosslinking density-determined properties can be created within single particles through the selection of optical exposure intensity and duration. In addition to conventional spherical shapes, a suite of non-spherical shapes may be generated by manipulating the dimensions of the microfluidic channels and other related physical and process parameters.

The application provides a miniemulsion polymer, which is prepared by a miniemulsion polymerization method through controlling pre-emulsion droplet particle size by a high-pressure homogenizer, using specific auxiliary stabilizers and specific primary emulsifiers. After the miniemulsion polymer is incorporated into a base material, an engineering material with high air tightness, high water tightness, high bonding strength and excellent durability can be obtained, which is used for the durability protection or sealing of engineering structures or the bonding between different materials, and has the advantages of simple process, low cost and outstanding comprehensive performance.

Sound-absorbing particles, a method for preparing the same and a related device are provided. The method for preparing the same includes: adding powdered molecular sieve into water and stirring evenly, and adding adhesive and continuing to stir evenly to obtain precursor slurry; adding the precursor slurry, as a dispersed phase, into a microfluidic device, and dispersing, by the microfluidic device, the precursor slurry using a continuous phase into emulsion droplets flowing in a front section of a microchannel of the microfluidic device; extruding the emulsion droplets to have a predetermined shape by adjusting a shape of a rear section of the microchannel of the microfluidic device to obtain deformed emulsion droplets; solidifying the deformed emulsion droplets by setting a temperature in the rear section of the microchannel, to obtain solidified emulsion droplets; and sublimating and drying the solidified emulsion droplets to obtain the sound-absorbing particles.

The present invention discloses a preparation method of a novel β-carotene microcapsule. During the preparation of the β-carotene emulsion, a certain content of emulsification auxiliary is added to the formula. The emulsification auxiliary will adsorb on the surface of the β-carotene emulsion droplets. By means of emulsification, electrostatic adsorption and steric hindrance effects, the emulsion droplets are made independent of each other, the stability of the emulsion is increased, so that the emulsion droplets are not easily damaged during the spray drying process of the β-carotene emulsion, the loss of β-carotene during spray drying is reduced, and the storage stability of the β-carotene microcapsule product is improved.

The invention discloses a novel thermal insulation coating, belongs to the technical field of coating processing, and is used for solving the technical problem that the thermal insulation performance and the polyacrylate emulsion droplet structure of a polyacrylate coating in the prior art need to be further improved. The coating is prepared from the following components in parts by weight: 60-80 parts of polyacrylate emulsion, 6-7 parts of titanium dioxide, 7-8 parts of nano aluminum oxide, 6-8 parts of talcum powder, 2-5 parts of a dispersing agent, 3-5 parts of a stabilizer, 2-5 parts of a flatting agent and 2-3 parts of an anti-sticking agent. The modified emulsifier prepared by the preparation method disclosed by the invention is used as a part of a polyacrylate chain segment while having excellent performance, and is further reacted to prepare an emulsion droplet dispersed polyacrylate emulsion which takes modified hollow glass microspheres as a carrier inside and is externally modified with an amphiphilic polyacrylate structure; and mixing and sieving with auxiliary materials to obtain the wear-resistant, high-temperature-oxidation-resistant, heat-insulating and corrosion-resistant coating.

The application discloses heparin sodium cream and a preparation method thereof, and belongs to the technical field of pharmaceutical preparation production. The heparin sodium cream comprises the following components: heparin sodium, propylene glycol, hydroxyphenyl ethyl ester, sodium dodecyl sulfate, glycerol monostearate and distearate, octadecanol, liquid paraffin, white vaseline and water. The preparation method comprises the following steps: preparing an oil phase and mixing an aqueous phase; taking part of the mixed aqueous phase and the oil phase to form a water-in-oil type primary emulsion; then adding the remaining mixed aqueous phase into the primary emulsion, inducing phase transition into an oil-in-water type cream under mild conditions, and obtaining the finished product after vacuum defoaming and gradient cooling. The application realizes high-efficiency emulsification under mild conditions below 80 DEG C and 3000 rpm through a controlled phase inversion emulsification process, so that the particle size (D99) of the emulsion droplets is less than 5 microns, and the problem that the active substance heparin sodium loses activity under severe conditions is solved completely, and the stability of the product is improved significantly.

This invention discloses a natural antibacterial polydopamine microcapsule and its preparation method. The shell material of the natural antibacterial polydopamine microcapsule is polydopamine, and the core material is Artemisia argyi oil. Using a soft template method with dimethyldiethoxysilane (DMDES) as the raw material, dopamine is in-situ self-polymerized on the surface of polydimethylsiloxane (PDMS) emulsion droplets solubilized with Artemisia argyi oil to prepare natural antibacterial polydopamine microcapsules encapsulating Artemisia argyi oil. The microcapsules prepared by this invention are micrometer-sized, monodisperse, and have high sphericity, with an average size of 1 μm. They exhibit high encapsulation efficiency for Artemisia argyi oil, with the highest encapsulation efficiency reaching 21.5% of the total mass of the microcapsules. This invention overcomes the disadvantages of high cost and environmental pollution caused by the large use of surfactants in classic emulsions. The preparation process is simple; it overcomes the defects of Artemisia argyi oil's volatility and instability; it has good monodispersity and certain antibacterial efficacy; and it can have a potential long-lasting antibacterial effect through the sustained release of Artemisia argyi oil. The preparation of monodisperse natural antibacterial polydopamine microcapsules has broad application potential in the industrial production of aromatic microcapsules.

The application provides a nanoemulsion and a preparation method and application thereof. The total amount of raw materials for preparing the nanoemulsion is 100%, and the raw materials include the following components: 1-40% of a composite surfactant, 1-25% of an oil phase, 1-30% of a co-surfactant, and the balance of a water phase; wherein the mass of the composite surfactant is 100%, and the composite surfactant includes the following components: 5-25% of a biological surfactant, 35-65% of a fatty alcohol polyoxyethylene ether surfactant, 1-20% of dodecyl benzene sulfonic acid and / or sodium salt thereof, 1-20% of oleic acid, and 1-5% of citric acid; the biological surfactant includes one or more than two combinations of sophorolipid, rhamnolipid, trehalose lipid, surfactin, alkyl polyglycoside, phosphatidylcholine, amino acid lipid, saponin, phospholipid, or derivatives thereof; and the average particle size of the emulsion droplets in the nanoemulsion is 1.5-5 nm. The nanoemulsion has excellent recovery performance.

The invention discloses a preparation method of hard monomer polymer nanoscale microspheres, and belongs to the technical field of emulsion polymerization. The specific scheme comprises the following steps: 1, mixing an emulsifier with water, adding ammonia water to adjust the pH value to 7-9, and heating and stirring to dissolve the emulsifier to obtain an emulsifier solution; step 2, adding an initiator and a hard monomer into the emulsifier solution, stirring and heating to 71-76 DEG C, reacting for 3-5 hours, raising the temperature to 81-86 DEG C, and preserving heat for 1-2 hours to obtain an emulsion; the hard monomer is used for preparing an acrylate emulsion; and step 3, dropwise adding the emulsion on a carrier, drying, and scraping to obtain the hard monomer polymer nanoscale microspheres. The polymer microspheres are obtained by directly drying the emulsion, the technological process is simple, only water is used as a dispersing agent, the influence on the environment is smaller, and the price is low. A spherical structure naturally formed by a molecular chain in an emulsion is utilized, so that the size of the microspheres has good uniformity.

This invention discloses an anionic hydroxyl silicone oil emulsion and its preparation method, relating to the field of polysiloxane emulsion technology, and belonging to patent classification number C08G77 / 04. The preparation method is as follows: Triethanolamine dodecylbenzenesulfonate salt, tridecyl alcohol polyether, and deionized water are mixed and dissolved, heated, and polydimethylsiloxane alcohol is added under high-speed shearing for homogenization. Water is added and the reaction is maintained at a constant temperature to obtain a basic emulsion. γ-(methacryloyloxy)propyltrimethoxysilane is added dropwise to react and obtain an interface-reinforced emulsion. Acrylamide, N-hydroxymethylacrylamide, etc., are pre-emulsified and then added to the interface-reinforced emulsion with ammonium persulfate under nitrogen protection. Polymerization forms a cross-linked polymer shell. After cooling, tert-butylhydroquinone and disodium ethylenediaminetetraacetate are added to obtain an antioxidant emulsion. Phenoxyethanol and octyl glycol are added to obtain the final emulsion. This method significantly improves the thermal stability of the emulsion through the synergistic effects of composite emulsification, interface reinforcement, shell protection, and antioxidant properties, making it suitable for high-temperature environments.