12results about How to "Delayed release time" patented technology

The invention discloses an ultrahigh-voltage direct-current shielding material and a preparation method thereof, and the shielding material is prepared from the following raw materials in parts by mass: 65-80 parts, preferably 70-80 parts, of matrix resin; 15 to 25 parts of carbon black-MXene-ionic liquid composite conductive agent, preferably 18 to 23 parts of carbon black-MXene-ionic liquid composite conductive agent; 0.2 to 5 parts of an antioxidant, preferably 0.5 to 2.5 parts of the antioxidant; 1-2 parts, preferably 1-1.5 parts, of a lubricant; 0.5 to 2 parts of cross-linking agent, preferably 0.8 to 1.2 parts of cross-linking agent. By introducing the MXene-ionic liquid modified superconductive carbon black, the conductive effect is improved, the use amount of the carbon black is reduced, and uniform dispersion of the conductive filler is realized, so that the generation of surface bulges is reduced, the surface smoothness of the shielding material is improved, and meanwhile, due to the synergistic conductive effect of the ionic liquid and MXene, the shielding material has good conductivity. The PTC effect of the shielding material is reduced; and the generation of space charges is reduced.

The invention relates to the technical field of medicines, and provides a guaiol pentopromethazine controlled release tablet and a preparation method thereof. The guaiol pentopromethazine controlled release tablet comprises a tablet core and a coating for coating the tablet core, the tablet core comprises the following raw material components: a first active pharmaceutical ingredient, a skeleton carrier, an osmotic pressure accelerant and a disintegrating agent; the coating comprises the following raw material components: a film-forming material and a second active pharmaceutical ingredient; the first medicine active component and the second medicine active component both comprise potassium guaiacol sulfonate, pentoxyverine citrate and promethazine hydrochloride. The invention has the beneficial effects that the controlled release tablet provided by the invention can realize relative stability of blood concentration, so as to solve the problems of'crest 'and'trough' phenomena of blood concentration caused by single administration in the clinical use process and short drug release action time, improve the clinical curative effect and reduce the cost. The adverse reaction caused by overhigh peak stage of the blood concentration is reduced, and the drug resistance phenomenon is reduced.

The invention provides a modified oxygen-releasing nano peroxide for degrading organic pollutants, a composite oxygen-releasing material, a preparation method and an application. The modified oxygen-releasing nano peroxide comprises an oxygen-releasing nano peroxide, a pH regulator, a polyvinyl alcohol-poly (N-isopropylacrylamide) membrane layer and a cross-linked chitosan membrane layer, the polyvinyl alcohol-poly (N-isopropylacrylamide) membrane layer wraps the oxygen-releasing nano peroxide and the pH regulator, and the cross-linked chitosan membrane layer wraps the oxygen-releasing nano peroxide and the pH regulator. The polyvinyl alcohol-poly (N-isopropylacrylamide) film layer is coated with the cross-linked chitosan film layer. The modified oxygen-releasing nano peroxide is high in purity and good in dispersity, the content of dissolved oxygen in a water body can be kept stable for a long time, and the influence on the pH value of the environment is small.

The utility model provides a material dropping device for a stirrer, which relates to the technical field of stirrers and comprises a base, a tank body arranged inside the base, a sealing cover fixedly mounted at the top of the tank body, a stirring rod main body fixedly mounted on the sealing cover, a material adding cylinder arranged at the top of the sealing cover, and a piston rod slidably connected inside the material adding cylinder. According to the device, an additive can be added during processing through the feeding assembly, so that raw materials rotating at a high speed are prevented from being scattered during processing, the air removal time is shortened, the quality problem caused by external environment interference is avoided, the adding amount of the additive each time can be controlled through the amount control assembly, and the production efficiency is improved. The starting time and direction are recorded by utilizing the editable servo motor, and the servo motor is started to carry out corresponding operation when the set time is up, so that a set amount is dropped within the set time, and the loss of viscosity and temperature of raw materials is reduced.

The utility model relates to the technical field of flat cable processing, and discloses a rapid cooling device for flat cable processing, which comprises a machine body, the top of the machine body is fixedly connected with the bottom of a controller, the inner wall of the machine body is fixedly connected with the bottom of a driving motor, and the driving motor is provided with a heat dissipation mechanism for rapid cooling. The heat dissipation mechanism is provided with an adjusting mechanism, the heat dissipation mechanism comprises a water sump, the inner wall of the water sump is fixedly connected with the side wall of the driving motor, the rapid cooling equipment for flat cable processing is provided with the heat dissipation mechanism, and the water sump is arranged on the outer wall of the driving motor in the machine body; after the driving motor works for a long time, the water pump is started to pump cooling liquid in the water sump into the heat dissipation water pipe, the cooling liquid is driven by the water pump to circularly flow among the heat dissipation water pipe, the three-interface converter and the water sump, so that the surface temperature of the driving motor is reduced, and a flow divider and a flow gathering ring are further arranged at the end, returning to the water sump, of the heat dissipation water pipe.

The present invention discloses a diquafosol composition, a pharmaceutical preparation containing the same and an application thereof. The present invention provides a diquafosol resin composition, which comprises diquafosol or a pharmaceutically acceptable salt thereof, an anion exchange resin and water. The diquafosol composition provided by the present invention has a high drug adsorption rate and drug loading, can achieve controlled release of the drug, improve the bioavailability of the drug, and is conducive to the drug exerting a stable and sustained therapeutic effect.

The invention discloses a slow-release dressing for local surface long-acting anesthesia and a preparation method of the slow-release dressing, and belongs to the technical field of anesthesia dressings. The preparation method of the slow-release dressing for local surface long-acting anesthesia is used for solving the technical problems that in the prior art, the slow-release rate of an anesthesia dressing cannot be adjusted according to the tolerance of a patient to anesthetics, and the duration time of the anesthesia dressing needs to be further prolonged. Comprising the following steps: uniformly coating skin-friendly base cloth with anesthesia sustained-release gel to form an anesthesia sustained-release layer on the skin-friendly base cloth; coating the top of the anesthesia sustained-release layer with composite gel to form a water-absorbing and moisturizing layer; laying an antibacterial non-woven fabric on the top of the water-absorbing and moisture-preserving layer to obtain a primary anesthetic dressing product. The anesthesia sustained-release gel and the composite gel are matched with each other, so that the duration time of the anesthesia dressing is effectively prolonged, the release rate of the anesthetic in the anesthesia dressing can be adjusted according to the tolerance of a patient to the anesthetic, and the anesthesia effect of the anesthesia dressing is improved.

The application provides a push rod, a release device and a medical device. The push rod comprises a first conductor and a second conductor. The first conductor has an inner cavity extending through in the axial direction and comprises a conductive tube and a conductive spring. The proximal end of the conductive spring is electrically connected to the distal end of the conductive tube. The second conductor is at least partially arranged in the inner cavity and is non-electrically connected to the first conductor. The distal end of the second conductor is provided with a release area. The push rod can be quickly electrolytically released and has good push performance.

The utility model relates to a convenient quick-release back frame which comprises a back frame body, a mounting seat is mounted on the back frame body, a traction piece is rotatably mounted on the mounting seat, a main pull rope is fixed to the top of the traction piece, a plurality of branch pull ropes are arranged on the end face of the inner side of the traction piece, one ends of the branch pull ropes are fixed to the traction piece, and the other ends of the branch pull ropes are fixed to the traction piece. And the other ends of the plurality of branch pull ropes are respectively connected with respective quick-release connecting pieces. The convenient quick release back frame can realize a one-button quick release function, and the release time is shortened.

The invention discloses a thermal insulation wall repairing material and a preparation method thereof. The thermal insulation wall repair material provided by the invention is prepared from the following components in parts by weight: 125 to 166 parts of modified overburnt magnesium oxide, 120 to 165 parts of ammonium dihydrogen phosphate, 72 to 105 parts of fly ash floating beads, 20 to 55 parts of water glass, 25 to 55 parts of steel slag powder, 18 to 40 parts of aluminum powder, 10 to 40 parts of alpha-semi-hydrated gypsum, 15 to 45 parts of xanthan gum and 185 to 286 parts of water. According to the invention, a surface modification technology, a polymer enhancement technology and the like are fused, so that the modified magnesium oxide particles have good fluidity and controllable coagulation time in a later hydration process, and the adhesive property of the material can be improved in the later stage; after the modified overburnt magnesium oxide is fully mixed with the ammonium dihydrogen phosphate, the mixed mineral admixture, the water glass and the foaming agent, the prepared thermal insulation wall repairing material has high permeability, high fluidity, high cohesiveness and operability, and meanwhile, the service life of a thermal insulation wall is prolonged.

The present invention relates to a preparation method of oxaliplatin for injection, including: preparing a liposome solvent by a liposome preparation and an amphiphilic membrane stabilizer, preparing a chitosan solution, mixing the chitosan liposome micelle with the liposome solvent; mixing the chitosan liposome micelle with a free oxaliplatin solution to form an oxaliplatin polymer micelle in which oxaliplatin is encapsulated in the chitosan liposome micelle; freeze-drying to obtain oxaliplatin for injection. The present invention provides a method of making oxaliplatin exist in the form of polymer micelles by selecting a specific liposome preparation and an amphiphilic membrane stabilizer, greatly improving the cancer cell inhibition rate, delaying the drug release time, improving the circulation time of the drug in the blood, and ensuring storage stability.

The utility model discloses an edge grinding device with a quick fixing structure, which comprises a base and is characterized in that the base is connected with an auxiliary fixing component through a lifting module, and the auxiliary fixing component comprises an outer cover; the outer cover is cylindrical, the arc-shaped outer wall face of the outer cover is fixed to the lifting module, one end of the outer cover is open, and the other end in the outer cover is fixedly connected with a fixing circular plate. The utility model relates to the technical field of mechanical manufacturing, in particular to an edge grinding device with a quick fixing structure, which realizes quick fixing of parts through a lifting module, an auxiliary fixing component and a series of structures, and enables an auxiliary fixing block to quickly get close to or get away from each other through stretching and retracting of an electric push rod. Therefore, the part is clamped or released, and the fixing and releasing time is greatly shortened.