37 results about "Continuous release" patented technology

The invention discloses a nano-film for relieving bone fracture pain and a preparation method thereof, and relates to the technical field of medical films, the nano-film comprises an inner layer, a middle layer and an outer layer, the three layers are prepared by mixing traditional Chinese medicine extracts and base materials, the nano-film is prepared through an electrostatic spinning technology, the components of all the layers are the same, but the proportions are different, and the inner layer and the middle layer are different. Wherein a polycaprolactone and polyvinyl alcohol blending system is selected as the base material; the inner layer has high drug-loading capacity to quickly relieve symptoms, the middle layer has continuous release, the outer layer has low drug-loading capacity to reduce initial stimulation and increase stability, the use frequency is reduced, the drug effect is prolonged, and adverse reactions are reduced; the functions of protection, slow release and quick release are realized only by adjusting the proportion of PCL / PVA, and the production process is simplified.

The invention discloses a double-shell-layer fire extinguishing microcapsule. The double-shell-layer fire extinguishing microcapsule comprises a core material, a first shell layer and a second shell layer, wherein the core material is coated with the first shell layer, and the first shell layer is coated with the second shell layer. By optimizing the components of the core material, reducing the volatility of the core material, improving the coating rate and arranging the double-layer microcapsule structure, the first shell layer can be formed under the low-temperature condition and is excellent in compactness, escape of the core material in the reaction can be effectively reduced, the coating rate and the yield of the microcapsule are further improved, and after full crosslinking, the product yield is improved. The second shell layer can further improve the mechanical performance of the microcapsule, the hydrophobicity and compactness of the second shell layer are beneficial for preventing polyurea and melamine resin from absorbing water and deliquescing and preventing formaldehyde harmful substances from being continuously released, the safety of the microcapsule is improved, and the microcapsule has a wider application scene and can quickly respond to the fire temperature.

The invention relates to the technical field of spray bottles, in particular to a novel handheld pressurized sustainable spray bottle which comprises a shell. A shell top cover is installed at the top end of the shell body, a pressing handle is movably connected to the position, close to the top, of the side end of the shell body, a pump body is installed in the shell body, a piston is installed in the pump body, a PET bottle containing spraying liquid is detachably connected to the lower end of the shell body, and a pressure storage mechanism communicated with the pump body is installed in the shell body. A spraying outlet hole is formed in the side end, located above the pressing handle, of the outer shell body, the pressure storage mechanism comprises a pressure storage bin arranged in the outer shell body, a spraying pipeline is fixedly connected to the outer side of the pressure storage bin, and the pressure storage bin is connected with a superfine atomization shutter mechanism through the spraying pipeline. The mode of pressing energy storage and continuous release is achieved through cooperation of the pressure storage bin and the pump body, and compared with a traditional spray bottle which can spray only through continuous pressing, the use convenience is remarkably improved, and the spray bottle is particularly suitable for a large-area spraying scene.

The present application belongs to the technical field of biomass boiler, in particular to a circulating fluidized bed boiler tail flue fly ash conveying system, which comprises a bin pump and a fly ash conveying pipeline, the bin pump is arranged at the bottom of the discharge pipe of the tail flue ash bucket; a flow zone is arranged at the middle part of the discharge pipe, a flow bin is arranged inside the flow zone, and the flow bin is communicated with the bin pump through a mixing pipe arranged at the middle part; the accumulated ash and the airflow are mixed in advance to form a gas-solid mixture which is sent into the bin pump and flows to the ash storage, so that the flowability of the ash is improved, the short-time concentrated release of the ash is converted into the continuous release of the gas-solid mixture, and the load on the bin pump is reduced; and the process of forming the gas-solid mixture from the accumulated ash expands the gap between the cinder, so that the cinder is diffused, the excessive concentration of the cinder through the bin pump is avoided, the blockage of the upper opening or the valve of the bin pump is avoided, the failure rate of the bin pump is reduced, and the smooth transfer of the accumulated ash of the boiler tail flue is ensured.

The utility model discloses a throwing test platform, which relates to the technical field of throwing test machinery and comprises a stop pile, a bearing mechanism and a throwing rack, and the stop pile is arranged at the tail end of the bearing mechanism. The device can be used as important guarantee equipment for ground test items such as function verification, performance test, delivery acceptance and the like, and can meet the requirements of multi-connection continuous release tests.

The invention relates to the technical field of road engineering materials, in particular to a warm mixing regenerant and a preparation method thereof.The warm mixing regenerant is prepared from, by mass, 70-85% of functional active components and 15-30% of solid carriers, and the functional active components are adsorbed to the solid carriers; the functional active components comprise the following components in percentage by mass: 60-80 wt% of a compound waste engine oil regenerant and 20-40 wt% of octadecanamide; the compound waste engine oil regenerant comprises the following components in parts by mass: 100 parts of waste engine oil, 30-50 parts of aromatic makeup oil, 2-5 parts of an antioxidant and 5-10 parts of a toughening agent, the solid carrier is modified diatomite with amino functional groups in gradient distribution on the surface and in pores; the diatomite carrier is modified through amino gradient, so that slow and continuous release in the later stage is realized, and a long-acting warm-mixing viscosity reduction effect is provided.

The invention discloses a time-control self-triggering type carbon dioxide sustained-release capsule for carbonized soil and a preparation method of the time-control self-triggering type carbon dioxide sustained-release capsule. The capsule comprises a gas production core and a sustained-release coating layer from inside to outside, the preparation method comprises the following steps: mixing the gas production core powder; the method comprises the following steps: uniformly mixing dry gas production formula powder according to a set proportion in a dry environment; granulating, rolling and drying the gas production core master batch; preparing coating powder; uniformly mixing the dried coating formula powder in proportion under a drying condition; the surface of the core is wet; the slow-release coating layer wraps the core; and drying at low temperature and taking out to obtain a carbon dioxide sustained-release capsule final product with complete structure and stable performance. The carbon sequestration soil is uniform in carbonization and high in strength, the problems of surface layer hardening and internal non-uniformity caused by carbonization from outside to inside are avoided, and therefore the overall strength of the carbon sequestration soil is remarkably improved; the initial release and continuous release time of the carbon dioxide is accurately controlled, so that the carbon dioxide is perfectly matched with a construction process, and the carbon dioxide is efficiently utilized for carbonization reaction.

The present invention provides a drop test method and device for plastic packaging products that can be released continuously, and relates to the technical field of test devices for the production of plastic packaging products. The test method includes step 1: transporting a number of samples arranged at intervals to a drop release position in sequence by means of a conveyor belt; step 2: at the drop release position, releasing a number of samples that arrive in sequence in sequence, so that a number of samples fall to a plane in sequence; step 3: visually inspecting a number of samples that fall to the plane in sequence, completing an initial inspection of the sample appearance and recording the initial inspection results, and collecting qualified samples and unqualified samples separately according to the initial inspection results; wherein, before releasing the sample in step 2, the sample's drop angle is first adjusted. The present invention solves the problem that existing drop methods and devices cannot achieve efficient and continuous release of large quantities of samples, and the drop angle is single.

The utility model discloses a mooncake mould capable of continuously demoulding, and particularly relates to the technical field of food processing equipment, the mooncake mould comprises a working table and a shaping frame arranged on the top surface of the working table, the shaping frame is used for making mooncakes, two sliding rails are fixedly arranged in the working table, and two sliding blocks are connected to the outer surfaces of the two sliding rails in a sliding mode. According to the moon cake mold capable of achieving continuous demolding, in actual work, the motor drives the threaded rod to rotate, the two positioning boxes and the two lower molds are made to move, the two lower molds can be sequentially located below the upper mold, along with movement of the two positioning boxes, the driving blocks can be inserted into the positioning boxes and make contact with the contact wheels, and therefore the moon cake mold can achieve continuous demolding. The top plate is pushed to ascend, the formed moon cakes are ejected out and demolded, continuous demolding can be achieved by rotating the threaded rod and enabling the two positioning boxes to transversely move left and right, in the demolding process, the other lower mold can normally conduct moon cake forming operation, and therefore the moon cake making efficiency can be effectively improved.

The invention relates to the technical field of plastic plate preparation, in particular to a preparation method of a negative ion plastic plate. The invention discloses a preparation method of a negative ion plastic plate, which comprises the following steps: pretreating reinforced polypropylene to obtain fine particles, preparing silane coated functional mineral powder, carrying out surface modification, and forming a network-mineral powder composite dispersed phase with plasma treated composite cellulose powder; mixing the dispersed phase with pretreated polypropylene fine particles, composite cellulose aerogel particles and other raw materials according to a specific mass ratio, adding an adhesive and a lubricant, stirring, melting and granulating to obtain negative ion plastic master batch; and the master batch is subjected to preheating, casting, gradient cooling, trimming and curing treatment, and finally the negative ion plastic plate is prepared. By optimizing the raw material ratio and process parameters, the dispersity of functional components and the stability of the material are improved, it is ensured that the product continuously releases negative ions, the process is controllable, and industrial production is easy.

The invention discloses a high-efficiency and low-cost durian ripening acceleration method, and belongs to the technical field of fruit ripening acceleration, the durian ripening acceleration method comprises the following steps: placing durian with the first-grade ripening degree in a fruit packaging carton, taking an ethephon controlled release bag, soaking with water, placing in the fruit packaging carton, closing a carton cover, placing at the temperature of 25-28 DEG C for 4 days, opening the carton cover every 6-8 hours for ventilation for 1-2 minutes, and then taking out the durian; the invention further discloses a preparation method of the ethephon controlled release bag. Compared with an existing ethylene gas ripening method, the method can be implemented by adopting a common fruit packaging carton, professional equipment is not needed, and the cost is reduced; compared with an ethephon liquid ripening method, the method has the advantages that ethylene gas is slowly and continuously released through the hydrolysis effect of the ethephon controlled release bag, uniform ripening of the durian is achieved, negative problems caused by uneven spraying of the ethephon liquid are effectively avoided, the environmental protection risk is greatly reduced, and the method is suitable for large-scale popularization and application.

The invention belongs to the technical field of decorative materials, and relates to a floor capable of efficiently and stably releasing negative ions, which comprises a high-density fiberboard base material, a negative ion impregnated bond paper layer arranged on the upper surface of the base material, and a balance layer arranged on the lower surface of the base material, the negative ion impregnated bond paper layer contains a negative ion additive, and the negative ion additive contains tourmaline and terbium oxide. The invention further discloses a preparation method of the floor. By optimizing the mixing and coating process of the negative ion additive and the dipping glue, a uniform negative ion coating with a micropore slow release function is formed on the surface of the floor, high-concentration negative ions are continuously released in a normal state, the actually measured release concentration can reach 5000 / cm < 3 >, and the indoor air quality is remarkably improved; the surface of the floor is subjected to mortar enhancement treatment, the wear resistance is excellent, and functionality reduction caused by daily wear is avoided; negative ion release is stable, the service life is long, air can be continuously purified, and human health is facilitated.

This invention discloses a wear-resistant self-lubricating resin for composite surface layer structures and its preparation method, belonging to the field of composite surface layer technology. It includes a matrix resin component A, a lubricating component B, a curing agent component C, and a coupling agent component D. Reactive functional groups are introduced onto the surface of solid lubricating particles through coupling agent component D. This invention uses a silane coupling agent to perform surface grafting modification on PTFE and MoS₂, introducing reactive functional groups onto the particle surface. These functional groups participate in the curing and crosslinking network of the epoxy resin, forming a "chemically bonded interface." This structure allows the lubricating particles to wear uniformly in the form of a "molecular brush" during friction, while deep lubricating particles are continuously exposed and replenished to the friction interface, achieving a long-term mechanism of lubrication reserve and continuous release. The low surface energy of PTFE fills the gaps in the transfer film, forming a "continuous, dense, low surface energy" composite lubricating film on the mating surface. This synergistic effect significantly reduces the coefficient of friction.

The invention provides a mixture containing microcapsules, a preparation method of the mixture and a nursing pad, and belongs to the technical field of medical monitoring nursing materials. Methyl red and bromothymol blue in the microcapsule-containing mixture provided by the invention are acid-base indicators, so that the nursing pad has a pH value indication effect; the persimmon extract has antibacterial and deodorizing effects; the polyhexamethylene guanidine has a broad-spectrum antibacterial effect; the polyethylene glycol has good solubility, lubricity, moisture retention and the like, so that the solubility, the stability and the bioavailability of the raw materials are improved; part of substances (methyl red, bromothymol blue, persimmon extract, polyhexamethylene guanidine and polyethylene glycol) in the raw materials can be contained in hydrophobic cavities of cyclodextrine to form a microcapsule structure, so that the stability and dispersity of the raw materials are improved, slow and continuous release is realized, the nursing pad has long-time antibacterial and deodorant effects, and the service life of the nursing pad is prolonged. And the color developing uniformity of the nursing pad can be improved.

The invention discloses a preparation method and application of a functional slow-release filter stick based on an MOF material, and the preparation method comprises the following steps: blending natural plant essential oil; a fiber-based MOF material, a Zn-based MOF material or a Zr-based MOF material is selected as a carrier; immersing the MOF material into formula essential oil, oscillating and collecting, washing with hexane, and drying to obtain essential oil-loaded MOF particles; and forming a filter stick: compounding the MOF particles loaded with the essential oil with the acetate fiber sections to prepare the filter stick. The natural plant essential oil is combined with the MOF material, efficient loading of the essential oil is achieved through a three-dimensional pore channel structure of the MOF material, meanwhile, a 60-80-DEG C activation temperature field of a filter stick during cigarette smoking is utilized, harmful substances generated through high-temperature pyrolysis are avoided, and directional release of the essential oil is promoted. The intelligent two-phase release mechanism of the MOF material ensures stable storage period and continuous release in smoking period, so that the dual effects of reducing harm and protecting health are realized while the original fragrance of the tobacco is retained, and healthier and better smoking experience is provided for cigarette consumers.

The invention relates to the technical field of phosphorite flotation, in particular to a low-grade phosphorite float separation instrument which comprises a barrel body, a microbubble mineralization assembly, a flotation assembly and a driving assembly, the barrel body is of a cylindrical hollow structure, the microbubble mineralization assembly is fixedly installed at the lower end in the barrel body, and the microbubble mineralization assembly comprises a liquid inlet end and a dispersion end; the flotation assembly is fixedly installed in the middle of the interior of the barrel body, and the dispersion end of the microbubble mineralization assembly is connected with the middle of the flotation assembly; through the designed micro-bubble mineralization assembly, a dual-bubble generation mechanism of preliminary dispersion of venturi negative-pressure air suction and continuous release of micro-bubbles by a microporous wall is integrated, and a high-strength turbulent flow field is generated in combination with the crushing frame rotating at a high speed, so that high-probability and high-strength collision and adhesion of micro-bubbles and micro-fine particle phosphorite are forcibly promoted; the problem that micro-fine particles are difficult to recycle in conventional flotation is solved.

Devices, systems, and methods are disclosed for facilitation of continuous release of fluids or vaporizable solids using disinfectants, deodorizers, repellants, etc., into an enclosed unit, such as trash-can in consistent and predictable amounts. The device generally includes a surface mount holder-ejector device in the resemblance of letter “H”; inward slanted upper arm as in the upper arm of letter “H”; inward slanted lower arm as in lower arm of letter “H”; or slightly curve bilateral arms as in letter “H” that may have thumb-finger fitting. The device has an encasement unit with holder-ejection mechanism mounted on the horizontal arm of the device as in the horizontal arm of letter “H”. Device can be utilized with modified disposable or refillable fluid container cartridge adaptable to the device, and device surface wall affixer. The lower “H” shaped arms of the device may be thumb-finger compressed to cause outward pull of the two upper “H” shaped arms of the device to allow insertion or ejection process of the cartridge. The ends of the two upper arms of the device have inward projection forming stoppers / internal grip surface that causes retention of the cartridge in the device and restricting outward pressure by the spring and flat-plate beneath the cartridge.

This invention discloses a drilling fluid resistant to carbon dioxide erosion and its preparation method, comprising the following components by mass fraction: 100 parts water, 4-6 parts bentonite, 1-2 parts sodium hydroxide, 3-5 parts sodium carboxymethyl cellulose, 8-10 parts xanthan gum, 20-24 parts carbon dioxide resistant agent, 60-70 parts barite, and 4-8 parts sulfonated phenolic resin; wherein the carbon dioxide resistant agent is a calcium ion resistant agent supported on walnut shell powder. This invention, by adding a carbon dioxide resistant agent, can not only effectively eliminate carbon dioxide invading the drilling fluid during drilling, but also prevent carbonate ions from affecting the drilling fluid's performance, thus avoiding changes in the drilling fluid's viscosity; wherein the carbon dioxide resistant agent uses walnut shells with a porous structure as a support, which can store calcium ions, the main component for eliminating carbon dioxide, within it, thereby achieving a slow and continuous release of calcium ions in the drilling fluid, preventing a sharp increase in the calcium ion content in the drilling fluid, thus improving the efficiency of carbon dioxide elimination and preventing carbonate ions from affecting the drilling fluid's performance.

The invention relates to the technical field of organic silicon materials and perfume slow release, and discloses a liquid silica gel material and a preparation method and application thereof.The liquid silica gel material comprises vinyl polysiloxane, a modified mesoporous silica carrier, a cyclodextrin inclusion compound, a polyethylene glycol pore-foaming agent and the like; through a triple synergistic strategy of mesoporous carrier adsorption loading, cyclodextrin inclusion protection and sacrificial template pore-forming, a multi-layer slow-release system is constructed in a compact silicone rubber matrix, and 30-90-day continuous release of the agilawood active component is realized.

The utility model relates to the technical field of heat insulation pads, in particular to an auxiliary tool jig for pasting a heat insulation pad on a continuous release paper double-faced adhesive tape, which comprises a positioning piece and a material distribution piece, a containing positioning area is arranged on the positioning end face of the positioning piece, a material distribution mold cavity is arranged on the material distribution piece, and after the continuous release paper double-faced adhesive tape is arranged in the containing positioning area, the material distribution mold cavity is formed in the material distribution piece. According to the auxiliary tool jig, the continuous release paper double-faced adhesive tape is mounted on the positioning piece, the material distribution piece is mounted on the positioning piece, the continuous release paper double-faced adhesive tape is pressed and fixed, and at the moment, the area, corresponding to the material distribution mold cavity, of the continuous release paper double-faced adhesive tape is the area suitable for pasting the heat insulation pad, and the heat insulation pad can be rapidly and accurately pasted to the continuous release paper double-faced adhesive tape through the auxiliary tool jig; and the production efficiency and the yield are improved.

The utility model belongs to the technical field of bathroom accessories, and particularly relates to a cleaning agent self-releasing device which comprises a cleaning agent storage container and a fixing mechanism. The cleaning agent storage container is in a vertical cylinder shape and is provided with an opening in the bottom, an inner cavity of the container is sequentially provided with an air storage space and an object storage space in the longitudinal direction, a cover is assembled at the opening in the bottom to limit the toilet cleaning block to be separated from the container downwards, and a through hole is formed in the cover. The fixing mechanism is arranged on the container cleaning agent storage container and used for vertically fixing the container in the closestool water tank. Compared with the prior art, the cleaning agent self-releasing device achieves automatic descending of the toilet cleaning block and continuous release of the cleaning agent, prolongs the period of checking and adding the toilet cleaning block, and improves use convenience. Through the design of the air storage space of the container inner cavity, water can only enter the bottom of the container inner cavity by utilizing pressure difference, and the container inner cavity is kept at a low water level, so that effective storage and dryness of the toilet cleaning block are ensured, and the risks of cleaning agent waste and blockage of a water outlet or a pipeline of a water tank are avoided.

The invention relates to the technical field of polyurethane foam, in particular to polyurethane foam capable of continuously releasing negative air ions as well as a preparation method and application of the polyurethane foam. The high-temperature-resistant polyurethane coating is prepared from the following raw materials: polyether polyol 330N, castor oil polyol, polymethylene polyphenyl isocyanate, nano tourmaline powder, cerium-doped zinc oxide composite powder, pentamethyl dipropylene triamine and polyether modified polysiloxane. In the design, the cerium-doped zinc oxide composite powder constructs a stable surface defect state in a zinc oxide lattice, and utilizes environmental heat energy to excite continuous release of low-energy electrons, so that the negative ion release capability and continuity of the polyurethane foam are effectively improved; after perfluorosilane surface modification, poisoning of water molecules to cerium-doped active sites can be effectively prevented, defect failure is avoided, meanwhile, the binding force between powder and a matrix is enhanced through physical adsorption, the falling risk is reduced, and the stability and durability of the material are remarkably improved.

The application discloses a novel gel repair material, a preparation method and application, relates to the field of tissue repair gel, and aims to solve the problem of single function of the existing water gel, and adopts the technical scheme that DSPE-PEG modified sodium bicarbonate nanoparticles, PVP modified PB NPs and GelMA gel material are made into a composite hydrogel, and the concentrations of the three are controlled. The porous structure of GelMA is stable, PB NPs and sodium bicarbonate are slowly released, so as to control the release kinetics of the two, make the slow release of PB NPs continuously remove ROS and generate oxygen, the continuous release of sodium bicarbonate maintains the pH stability, realizes the time sequence synchronization of "ROS removal-oxygen supply-pH buffering", and further controls the concentrations of PB NPs and sodium bicarbonate, ensures that the oxygen release is in the platform period, can release oxygen at a stable rate, the pH is stable at 7.2-7.4, ensures that the function intensity of PB NPs and sodium bicarbonate is matched, and avoids local microenvironment imbalance, and breaks through the limitation of single function in the prior art.

This invention provides a process for solving the problem of overflowing adhesive in porous semi-continuous release film. For this type of difficult-to-remove overflowing adhesive, the inner hole is first designed to be completely cut off to absorb the waste. Then, the inner hole is partially cut off by transferring the positioning hole to another release film and punching through the film replacement. This process completely eliminates the problem of difficult-to-remove overflowing adhesive in the inner hole, and improves the yield and production efficiency.

The present invention provides a spacer that enables repeated or continuous release of an active substance on its outer surface. [Solution] The present invention relates to an embedded spacer 100 for delivering medical fluid to a patient, comprising a first sub-element 120, a second sub-element 130, an outer surface 104, a channel 101, a plurality of delivery valves 110, and a connecting element 107 having a joint, wherein the connecting element movably connects the first sub-element to the second sub-element.

The application discloses an antibacterial stainless steel material and a preparation method thereof, and relates to the technical field of stainless steel materials.Scheme: taking post-consumer stainless steel as the main raw material, after crushing, oil removal and magnetic separation, the material is returned to the furnace for smelting, supplemented by composite refining and impurity removal under vacuum induction smelting and dynamic control of composition, then a plurality of alloying elements are introduced, and through three-stage precipitation heat treatment and cold deformation annealing process, a nano-scale precipitation strengthening structure is constructed, and finally a functional stainless steel material with mechanical properties, corrosion resistance and long-acting antibacterial property is obtained.The application improves the yield strength and tensile strength; through the Nb-Ta induction mechanism, the Cu precipitation phase particle size is precisely controlled and distributed in the grain boundary and dislocation, so that the organizational stability is improved; the Cu-Mg path is adopted to realize the continuous release of metal ions, and the sterilization rate is relatively high; meanwhile, the recycled material contains a relatively high proportion, and under the premise of ensuring the performance, the raw material utilization rate is significantly improved, and the green metallurgy and sustainable manufacturing are promoted.

The invention provides a drop test method and device for a plastic packaging product capable of being continuously released, and relates to the technical field of test devices for plastic packaging product production. The test method comprises the following steps: step 1, sequentially conveying a plurality of samples which are arranged at intervals to a drop release position in a manner of conveying by a conveyor belt; step 2, at the falling release position, releasing the plurality of samples which arrive in sequence in sequence, and enabling the plurality of samples to fall to a plane in sequence; 3, visual inspection is conducted on the multiple samples falling to the plane in sequence, initial inspection of the appearances of the samples and recording of initial inspection results are completed, and qualified samples and unqualified samples are collected according to the initial inspection results; wherein the falling angle of the sample is adjusted before the sample is released in the step 2. The problems that an existing falling method and device cannot achieve efficient and continuous release of a large number of samples, and the falling angle is single are solved.

The invention provides a controlled-release drug interventional therapy device adaptive to tumor local drug delivery, and relates to the field of medical instruments. The controlled-release drug interventional therapy device matched with tumor local drug delivery comprises a conveying cylinder, external threads are arranged on the two sides of the outer wall of the conveying cylinder, and the outer walls of the external threads are in threaded connection with positioning screw rings. According to the device, the servo motor provides stable and accurately-regulated driving force, the screw rod is driven to rotate, so that the threaded sleeve rod stably pushes the pressing disc, the rubber abutting block below the pressing disc is in close contact with the piston disc, the medicine pushing deviation caused by incompact contact is avoided, the pressure can be buffered, and the assembly can be protected; the pressing disc pushes the piston disc, the piston rod and the piston to stably move along the inner wall of the conveying cylinder, the moving distance of the piston can be accurately judged in cooperation with assistance of a positioning screw ring and scale marks, then the single-time or continuously-released dosage is accurately calculated and controlled, and the situation that the dosage is insufficient due to the problems of uneven manual operation force, experience judgment deviation and the like is effectively avoided.

The utility model discloses a rubber and plastic insulation board with embossments, which relates to the technical field of insulation materials and comprises a rubber and plastic insulation board body and a base material, the rubber and plastic insulation board body comprises the base material in the middle layer, and the outer end face of the base material is coated with a flame-retardant coating. According to the rubber and plastic insulation board with the embossment, the nano-silver ion and organic silicon resin composite antibacterial coating at the back end of the base material of the rubber and plastic insulation board body inhibits mould and bacterium breeding in a long-acting mode through the dual effects of continuous release of silver ions and a resin hydrophobic barrier, and the maintenance cost is reduced; the multi-layer nanometer material flame-retardant coating on the outer end face quickly forms a carbonization layer at high temperature, oxygen is isolated, flame spreading is inhibited, and safety is improved; in addition, the reinforcing structure of the embossment protrusions enhances the surface abrasion resistance and reduces construction damage, the flexibility of the closed-cell base material adapts to the complex installation environment, the comprehensive performance is comprehensively superior to that of a traditional flat heat preservation plate, the attractiveness is improved, the heat preservation effect is enhanced, and the using effect of the rubber and plastic heat preservation plate is improved.

The invention provides a preparation method of a hemostatic material capable of slowly releasing blood coagulation factors, which comprises the following steps: S1, dispersing collagen into a buffer solution with the pH value of 4-8, adding the blood coagulation factors into the buffer solution, and uniformly mixing to obtain a mixture; s2, adding salt into the mixture to carry out salting-out precipitation, then retaining the generated precipitate in a salting-out solution, crushing, and uniformly mixing; s3, adjusting the temperature of the mixture to 2-6 DEG C, adding a coupling agent, stirring, and reacting for 1-10 hours; and S4, dialyzing the reaction product, and crushing a retention solution obtained by dialysis into gel, thereby obtaining the hemostatic material. The invention further provides a hemostatic material capable of slowly releasing the blood coagulation factors and application of the hemostatic material in the aspect of hemostasis. The hemostatic material provided by the invention can be slowly and continuously released under the condition that the activity of the blood coagulation factors is reserved, so that the local stable blood coagulation environment of a wound can be maintained for a long time, and the risk of postoperative bleeding relapse is remarkably reduced.