14results about How to "Achieve slow release" patented technology

The invention discloses a pesticide slow-release granule suitable for simultaneous sowing of pesticide and plant seeds. The pesticide sustained-release granule has double coating layers, the first coating layer takes a pesticide effective component A as a core and a nano calcium carbonate carrier material as a shell, and nano calcium carbonate is used for carrying out first-layer coating on a bactericide effective component through a physical adsorption method; the second coating layer is formed by mixing the first coating layer and the pesticide active ingredient B as a core and taking materials such as attapulgite as a shell. The sustained-release granule has good sustained-release performance, can stably release effective components in a long time, prolongs the pesticide effect period, reduces frequent pesticide application operation, and further improves the pesticide utilization rate.

The invention discloses a method for realizing stable and continuous solute diffusion and slow release and a diffusion and slow release device. The method comprises the following steps: S100, manufacturing a mold; s200, the hydrogel solution is loaded in a mold, the mold is removed after a hydrogel mechanism is formed through cross-linking treatment, and the hydrogel mechanism is provided with a release cavity, a liquid inlet channel and a liquid outlet channel which are communicated with the release cavity in a limited mode; s300, continuously introducing a to-be-released solute solution into the liquid inlet channel, and continuously discharging the to-be-released solute solution from the liquid outlet channel, so that the concentration of the to-be-released solute solution in the release cavity is kept stable; and S400, at least part of the hydrogel mechanism is placed in target liquid, the to-be-released solute solution comprises to-be-released solute molecules, and the to-be-released solute molecules in the release cavity can be diffused into the bulk phase of the target liquid through the cavity wall of the release cavity. According to the method, stable, continuous and controllable solute molecule release can be realized, so that the flow controllability of the Malangoni interface can be conveniently improved.

The invention discloses a composite coating material for repairing the inner diameter corrosion surface of a hydraulic cylinder and a preparation method of the composite coating material, belongs to the field of metal anti-corrosion coatings, can effectively solve the problems that the inner diameter of the hydraulic cylinder is corroded, a matched sealing ring is seriously abraded and the like, and has the advantages that thermal stress is not introduced, the repairing efficiency is high and the accessibility is good. A corrosion inhibitor is stably combined on the surface of a porous polyether-ether-ketone nano-particle material by adopting a layer-by-layer self-assembly method to obtain polyether-ether-ketone nano-particles loaded with the corrosion inhibitor, and then the polyether-ether-ketone nano-particles loaded with the corrosion inhibitor are mixed with epoxy resin to obtain a uniform and stable modified epoxy resin anticorrosive coating. The obtained modified epoxy resin coating has excellent mechanical performance, corrosion resistance and machinability, can effectively inhibit the corrosion of the inner diameter of the cylinder body, maintains the dimensional precision and surface quality of the inner diameter of the cylinder body through machining, meets the service requirements of cylinder body parts, is simple and rapid in repairing process, can effectively repair damage caused by corrosion, and has a good application prospect. And the maintenance time and cost are reduced.

The present invention belongs to the technical field of packaging materials, and specifically relates to a high-barrier antibacterial food packaging film and a preparation method thereof. The high-barrier antibacterial food packaging film comprises, from the inside to the outside, a polyethylene antibacterial inner layer, a first nylon / polyethylene blended layer, an ethylene-vinyl alcohol barrier layer, a second nylon / polyethylene blended layer, and a polyethylene outer layer; wherein the polyethylene antibacterial inner layer is added with polystyrene antibacterial microspheres, and the polyethylene outer layer is added with nano titanium dioxide modified with isocyanatepropyltriethoxysilane. The high-barrier antibacterial food packaging film prepared by the present invention has excellent barrier properties under both low humidity and high humidity conditions, and at the same time has good antibacterial properties, heat sealing properties, high and low temperature stability and mechanical properties, and can extend the shelf life of food.

The invention discloses a chondroitin sulfate / whey protein isolate anthocyanin nano-composite and a preparation method and application thereof.The preparation method comprises the steps that blueberry pomace is pre-frozen, freeze-dried and then ground into powder, blueberry pomace powder is obtained, the blueberry pomace powder and pectinase are added into a citric acid buffer solution, water bath oscillation enzymolysis is conducted, the blueberry pomace powder and pectinase are taken out for enzyme deactivation, and the chondroitin sulfate / whey protein isolate anthocyanin nano-composite is obtained. The preparation method comprises the following steps: dissolving whey protein isolate and chondroitin sulfate into water, carrying out ultrasonic treatment, centrifuging, filtering supernate, purifying and freeze-drying to obtain anthocyanin powder, dissolving whey protein isolate and chondroitin sulfate into water, regulating the pH value, dropwise adding an anthocyanin solution into a chondroitin sulfate solution, carrying out secondary stirring, dropwise adding the whey protein isolate solution, and carrying out three-time stirring, standing, centrifuging, freeze-drying and grinding to obtain the product. According to the method, the extraction rate of the anthocyanin is high, the embedding rate of the nanocomposite is high, the stability is good, and the method is green, efficient and simple.

The invention discloses a method for preparing a fertilizer by extracting amino acid from alanine fermentation broth, and relates to the technical field of fertilizer preparation, and the method comprises the steps of pretreatment of the alanine fermentation broth, ion exchange adsorption, elution, concentration and fertilizer blending. Impurities are removed step by step from large particles to small particles, the impurities with different particle sizes are effectively intercepted, a pure alanine fermentation liquor foundation is provided for the subsequent extraction process, and under reasonable temperature and stirring rate control, the filtering efficiency is ensured, the fermentation liquor components are prevented from being changed due to overheating or excessive stirring, and the alanine fermentation liquor extraction efficiency is improved. Through ultrasonic treatment, macromolecular substances in the crude alanine fermentation liquor are dispersed more uniformly, the structure of the crude alanine fermentation liquor is destroyed, the fluidity of the fermentation liquor and the contact area of subsequent ion exchange are enhanced, the ultrasonic frequency, power, temperature and stirring rate are accurately controlled, and the stability and reliability of the ultrasonic treatment effect can be guaranteed.

The embodiment of the invention provides a buccal product and a preparation method thereof, the buccal product comprises a functional layer, the functional layer comprises a film-forming base material and an active substance and an essence microcapsule dispersed in the film-forming base material, the wall material of the essence microcapsule comprises Arabic gum, the core material of the essence microcapsule comprises oil-soluble essence, and the oil-soluble essence is an oil-soluble essence. The volatile oil-soluble essence serving as the core material is wrapped in the microcapsule taking the Arabic gum as the wall material, and the volatile oil-soluble essence and the active substance are integrated into the functional layer, so that the essence can be slowly released by utilizing a compact wall material structure formed by the Arabic gum, and the essence can be continuously utilized to cover the peculiar smell of the active substance.

This invention belongs to the field of medical materials technology, specifically referring to a drug-loaded porous magnesium alloy bone scaffold and its preparation method. The drug-loaded porous magnesium alloy bone scaffold is composed of the following raw materials in parts by weight: 55 parts magnesium alloy, 6-10 parts corrosion inhibitor, 1 part drug-loaded gel, 2-4 parts antibacterial bone-promoting agent, and 3 parts gelatin. This invention achieves sustained drug release by fabricating magnesium alloy into microtubes and filling the interior with a drug-loaded hydrogel; gelatin is sprayed onto the surface and adhered through Mg-N coordination bonds, bonded to the corrosion inhibitor, and hot-pressed. The components form an interpenetrating network with the gelatin to enhance bonding and react with the magnesium alloy to form a protective film; simultaneously, Ca... 2+ The process initiates cross-linking of sodium alginate, forming a stable anti-corrosion barrier. Finally, an antibacterial and bone-promoting mixture containing modified chitosan and thermosensitive polymer is sprayed on. Through complexation reaction and temperature control, the bone-promoting components are evenly dispersed around the implant, improving tissue compatibility.

The invention discloses a fragrant pomelo peel essential oil compound preservative capable of improving the storage quality of prunus salicina, and belongs to the technical field of fruit preservation. The preservative is prepared from the following components in percentage by mass: 0.1 to 1.0 percent of fragrant pomelo peel essential oil, 0.5 to 2.0 percent of chitosan, 0.3 to 1.5 percent of modified white carbon black, 0.05 to 0.2 percent of antioxidant, 0.2 to 1.0 percent of glycerol, 0.1 to 0.5 percent of film-forming agent and the balance of deionized water. The modified white carbon black is prepared by step-by-step modification of a silane coupling agent, guar gum hydroxypropyl trimethyl ammonium chloride and sodium lignin sulfonate, can efficiently adsorb and slowly release essential oil, and enhances the compatibility with chitosan and the mechanical properties of a film layer. According to the preservative disclosed by the invention, a composite coating film is formed by dip-coating, so that water loss, browning and microbial decay after the prunus salicina is picked can be remarkably inhibited, the shelf life of the prunus salicina is prolonged to 12-15 days at normal temperature, and the preservative is suitable for large-scale storage and preservation of the prunus salicina.

The invention relates to the technical field of daily necessities, and particularly discloses a traditional Chinese medicine hair loss preventing, hair growing and dandruff removing shampoo and a preparation method thereof, the traditional Chinese medicine hair loss preventing, hair growing and dandruff removing shampoo comprises tea bran, ganoderma atrum, cacumen biotae, folium artemisiae argyi, folium mori, folium llicis latifoliae, radix sophorae flavescentis, eclipta, polygonum multiflorum, black sesame, rhizoma zingiberis, pearl garden balsam stem, cynomorium songaricum, mulberry, morinda officinalis, astragalus membranaceus, fructus cnidii, pseudo-ginseng, minoxidil, propylene glycol and hyaluronic acid; by using the microcapsule technology, the active ingredients are wrapped in the polymer film to form a miniature container or inclusion, and the contact between the active ingredients and the external environment is effectively reduced, so that the active ingredients are prevented from being oxidized, decomposed or deteriorated, the stability of the active ingredients is improved, and the release rate and time of the active ingredients can be controlled. The slow release of the active ingredients is realized.

The utility model relates to a kind of sneakers of wide type shoe sole, including upper and shoe sole, and the palm part and heel of shoe sole are equipped with damping device in, the damping device includes base and shell, the base is equipped with recess, the recess is filled with medicament material, and the top wall of accommodating cavity and recess gap are left gap accommodating cavity is filled with slow-release material, conveying channel is equipped in the shell outer wall and is spirally coiled along its axial direction, shoe sole upper surface is equipped with spiral guide slot, and accommodating cavity is connected guide slot by conveying channel. The recess of the utility model is filled with antibacterial deodorization medicament, medicament is covered with slow-release material, conveying channel is spirally coiled in shell outer wall, and slow-release material and conveying channel are cooperated to form double restraint, realize the slow-release of traditional chinese medicine effective component, avoid component sudden release waste under exercise pressure, significantly prolong antibacterial deodorization effective period.

The invention relates to the technical field of polymer gel, and provides an in-situ gel forming solution containing polydeoxyribonucleotide as well as a preparation method and application of the in-situ gel forming solution. The preparation method comprises the following steps: dissolving sodium hyaluronate, adding EDC, adding NHS, and mixing to obtain an activated sodium hyaluronate solution; dropwise adding a 5-hydroxydopamine solution into the activated sodium hyaluronate solution in a stirring state, and reacting to obtain an intermediate solution; dissolving collagen and polydeoxyribonucleotide, adding the dissolved collagen and polydeoxyribonucleotide into the intermediate solution, mixing, and adding EDC and NHS to obtain an activated solution; dropwise adding a 5-hydroxydopamine solution into the activated solution, and reacting to obtain an in-situ gel forming solution; the invention also provides application of the in-situ gel formation solution in the fields of beauty and plastic surgery. Skin aging caused by light aging can be resisted, generation of fibroblasts, collagen synthesis and angiogenesis at an injection part can be promoted, and good injection performance is achieved.

The present invention belongs to the technical field of sorghum cultivation, and specifically relates to a sorghum drought-resistant and water-saving cultivation method, comprising the following steps: S1, before sowing, deep ploughing the soil, raking the soil, removing weeds and stones, applying fertilizer, and watering the soil; S2, selecting sorghum varieties adapted to local climate and soil conditions, sowing in the form of hole sowing, row sowing or broadcasting, and irrigating according to soil moisture and weather conditions; S3, thinning out seedlings when 3-4 leaves emerge, finalizing seedlings when 5-6 leaves, intertillage cultivation for finalizing seedlings, intertillage cultivation again after 10-15 days, and spraying composite drought-resistant plant hormones on leaves and roots during jointing and heading stages; S4, performing field management, and applying topdressing during jointing and heading stages; S5, harvesting at the late stage of sorghum filling. The present invention not only improves the drought-resistant and water-saving ability of sorghum, achieves the goal of high yield and high quality, but is also easy to operate and reduces production costs.

This invention discloses a method for preparing a microcapsule-structured specialty coffee extract, the extract itself, and its applications, belonging to the field of fragrance and flavor technology. The method includes: adding an emulsifier to the specialty coffee extract and emulsifying it at 1530°C to obtain an emulsion; preheating a melamine resin prepolymer to 4045°C and adding it to the emulsion; raising the temperature to 4550°C within 15 minutes and adjusting the pH to 4.5-5.5 for the first stage reaction; then raising the temperature to 6080°C for the second stage reaction; and finally cooling and adjusting the pH to 7.5-8.5 to terminate the reaction, thus obtaining the microcapsule-structured specialty coffee extract. This invention, through room-temperature emulsification and a two-stage temperature-controlled process, effectively preserves the complex aroma of the specialty coffee extract. The resulting microcapsule structure is dense and stable, possessing both sustained-release and rapid aroma release via friction, significantly extending the aroma retention time. This invention also provides the application of the microcapsule-structured specialty coffee extract in the preparation of pet products.