109 results about "Spongilla" patented technology

This invention relates to the field of coating technology, and discloses a deep-sea pressure-resistant hull protective coating and its preparation method, comprising the following steps: substrate treatment, sequentially adding epoxy resin-modified polyurethane, reinforcing filler, anti-corrosion filler, curing agent and solvent in a predetermined proportion and mixing evenly to obtain a primer, and spraying the primer onto the substrate; then using isoxazole-modified polyurea as a topcoat, spraying the topcoat on the side of the primer away from the substrate to obtain the protective coating. This protective coating has excellent waterproof performance, impact resistance, wear resistance and anti-bioadhesion ability, and can effectively prevent water, various corrosive factors such as ions in seawater, and various polluting organisms in seawater such as barnacles, mussels, oysters and sponges from contacting the substrate surface.

The invention discloses a mesoporous biological ceramic filter sponge as well as a preparation method and application thereof, and belongs to the technical field of water treatment and air purification. The filtering sponge adopts a three-layer composite structure and comprises a three-dimensional porous sponge framework, a mesoporous ceramic transition layer and a nano metal thorn functional layer. Microorganism inactivation is achieved through a unique'adsorption-locking-puncturing 'physical mechanism, the inactivation rate of bacteria and viruses exceeds 99.9% under the condition that no chemical agent is used, meanwhile, heavy metal pollutants can be selectively removed, and beneficial mineral substances are reserved. The filtering sponge has the advantages of high porosity, large specific surface area, long service life and the like, and can be widely applied to the fields of drinking water treatment, sewage treatment, air purification and the like.

The utility model relates to an optimization device convenient for dry land soil ammonia volatilization collection. The optimization device convenient for dry land soil ammonia volatilization collection comprises a collection base, a gas collection pipe and a rain shielding roof, the inner diameter of the collecting base is matched with the outer diameter of the gas collecting pipe, the gas collecting pipe is installed on the upper side of the collecting base, a sponge support is arranged in the gas collecting pipe, a sponge soaked with phosphoglycerol is arranged on the sponge support, a vent hole is formed in the top of the side wall of the gas collecting pipe, and a rain shielding top is arranged above the gas collecting pipe. A limiting horizontal outer ring is arranged on the outer side of the top of the collecting base. According to the invention, sampling can be completed quickly and conveniently, the sampling accuracy is ensured, the operation difficulty and test errors caused by human factors are reduced, the monitoring accuracy is increased, the price is low, and operation and carrying are convenient.

The invention discloses an interface evaporation seawater desalination device based on an armor Janus structure and a preparation method, and relates to the technical field of seawater desalination devices.The device comprises a black copper net frame and a carbon nano tube sponge, the carbon nano tube sponge is filled in the black copper net frame, the black copper net frame is made of a super-hydrophobic material, and the carbon nano tube sponge is filled in the black copper net frame. The carbon nanotube sponge is made of a super-hydrophilic material; the super-hydrophilic carbon nanotube sponge on the inner layer can quickly adsorb and transmit seawater by virtue of excellent hydrophilicity and a porous network structure, and a water micro-channel penetrating through the whole body is efficiently constructed; the super-hydrophobic black copper net on the outer layer is like a protective barrier, and the super-hydrophobic characteristic of the surface of the super-hydrophobic black copper net can remarkably reduce the adhesive force between seawater and the net surface, so that salt crystals possibly separated out in the evaporation process are difficult to adhere to the surface of the super-hydrophobic black copper net, and the problem of interface blockage caused by accumulation of the salt crystals is effectively avoided.

The invention belongs to the technical field of directional hole sponge body preparation, and particularly discloses a preparation method and application of a directional hole sponge body. The preparation method comprises the following steps: cross-linking aminated silane and carbon nanotubes, and forming directional holes by using a directional heating method; the surface of the sponge is further coated with a photo-thermal conversion functional layer and a hydrophobic layer, and the directional hole hydrophobic sponge with the photo-thermal conversion effect is obtained. The obtained sponge has hydrophobicity and rebound resilience, can selectively adsorb oil in water, has an excellent adsorption rate, can be recycled for multiple times by using a physical compression method, and has a good application prospect in the field of oil-water separation.

The invention belongs to the technical field of microalgae biological culture, discloses a method for promoting growth of nostoc by efficiently utilizing a nitrogen source through solid-liquid culture, and aims to solve the problems of low nitrogen source utilization rate and slow biomass accumulation in the conventional culture technology. The method is based on a closed photobioreactor with gas-liquid circulation, and comprises the following steps: preparing a nitrogen-free BG11 culture medium; coating nostoc on the surface of the sterilized porous hydrophilic sponge; placing the sponge in a reactor, and adding the culture medium until no accumulated water is infiltrated; after closing the reactor, controlling the temperature, lighting and other conditions, continuously / intermittently supplementing nitrogen and maintaining certain positive pressure, and circulating the culture medium to supplement nutrition; and taking the sponge after the culture is finished. The utilization rate of a nitrogen source is remarkably increased, the biomass obtained through culture is remarkably increased, culture conditions are stable, and the method is suitable for large-scale development of nostoc and development of high-added-value products.

The application discloses a synchronous denitrification and dephosphorization rainwater biological retention facility capable of simultaneously coping with heavy rainfall, relates to the technical field of sponge city construction, and comprises a pool body, wherein an overflow layer, a covering layer, a filter layer, an upper drainage layer, a biochar layer, a submerged layer and a lower drainage layer are sequentially arranged in the pool body from top to bottom; the upper drainage layer and the lower drainage layer are each provided with a drainage pipe; the water outlet of the lower drainage pipe is lifted to be flush with the top of the submerged layer; the submerged layer comprises iron shavings and quartz sand materials; an overflow well is arranged in the pool body; the water outlets of the upper drainage pipe and the lower drainage pipe are both connected into the overflow well; a water level control valve is arranged in the pool body and used for controlling the opening and closing of the water outlet of the upper drainage pipe. The application can automatically adjust the water outlet path according to the rainwater flow, overcomes the problem that dissolved oxygen in rainwater runoff breaks through the submerged layer and reduces the denitrification and dephosphorization performance of the facility under the condition of heavy rainfall, improves the removal capacity of the facility for dissolved pollutants, and has a longer service life.

The application belongs to the field of sponge production equipment, and particularly relates to a safe and environment-friendly sponge product forming equipment, which comprises a stirring device, the lower part of the outer surface of the stirring device is movably connected with a forming box, the lower surface of the forming box is uniformly provided with adjusting support legs, the forming box comprises an outer box shell, the inner wall of the outer box shell is slidably connected with an adjusting frame, the shaft center of the upper surface of the adjusting frame is provided with a through hole, and the shaft center of the upper surface of the adjusting frame is rotatably connected with a sealing cover through the through hole. In the process of sponge expansion, the bottom plate covers the upper surface of the sponge block under the action of gravity, so that the outer surface of the produced sponge block is relatively flat as a whole, almost no cutting processing is needed, waste phenomenon caused by direct scrapping of cutting edges and corners is avoided, the expansion speed of the sponge block is limited, sponge block internal structure is prevented from being too loose due to too fast expansion of the sponge block.

The invention discloses an antistatic antibacterial seaweed carbon-based sponge and a preparation method thereof, and belongs to the technical field of sponge materials, graphene is deposited on the surface of seaweed carbon to obtain graphene / seaweed carbon, gel with antibacterial performance is loaded on the surface of the graphene / seaweed carbon, and a functional complex with a core-shell structure is cross-linked in the gel structure to obtain the antistatic antibacterial seaweed carbon-based sponge. The gel can be endowed with excellent strength, so that the gel has good, stable and long-term photocatalytic property, and can cooperate with the seaweed carbon to exert antibacterial property and avoid bacterium breeding; the functional complex has good photocatalysis and can cooperate with the antibacterial property of the seaweed carbon and avoid bacterium breeding, the gel has pH responsiveness, when the pH value is increased due to increase of skin sweat, the gel swells, the absorption of the fabric to sweat is enhanced, and stuffiness, stickiness and greasiness are avoided; when the skin is dry and the gel shrinks, the dry and comfortable touch feeling of the fabric is kept, and small defects existing in graphene and seaweed carbon can be effectively overcome through the water absorption swelling effect of the gel.

The utility model discloses a plug-in type large sponge structure which is characterized in that a long-strip-shaped cavity is formed in a peripheral sponge body in the length direction in a penetrating mode, the peripheral sponge body is located at the two ends of the long-strip-shaped cavity and extends outwards in the section direction to be provided with clamping grooves, and an inner side sponge body is inserted into the long-strip-shaped cavity of the peripheral sponge body. According to the utility model, the structure is reasonable, the inner side sponge body can be inserted into the long-strip-shaped cavity of the peripheral sponge body during conveying or transportation, and respective transportation or conveying is not needed, so that the convenience is greatly improved, the transportation cost is reduced, and the transportation efficiency is improved. Due to the fact that the peripheral sponge body and the inner side sponge body are separated, the follow-up machining difficulty and procedure steps are reduced, the clamping grooves are formed in the two ends of the long-strip-shaped cavity respectively, the limiting sponge bodies are arranged at the clamping grooves, and it is guaranteed that the inner side sponge body cannot be separated from the peripheral sponge body in the transportation process.

The present invention provides a hemostatic porous sponge comprising a matrix of a fibrous biomaterial and particles of a fluid absorbing, particulate material adhered to said matrix material, a method of producing these sponges and their use for wound healing.

The application discloses a kind of composite biological base suspended purification systems based on near natural water ecological concept, belong to water ecological diversity restoration technical field.The system is composed of emergent plant ecological design module, biological base suspended core, microbial cultivation bed, intelligent underwater oxygenation aeration module, artificial ecological fish reef and submerged plant planting module.Biological base suspended core adopts four-layer gradient composite structure, including polyester fiber filler layer, activated carbon fiber sponge layer and palm silk biological base layer, realize physical adsorption, chemical degradation and biological metabolism synergistic purification.Intelligent aeration module is linked through multi-parameter sensor and fuzzy PID algorithm dynamically controls aeration intensity, oxygen transfer efficiency is greater than or equal to 35%.The application is coupled by the aperture gradient distribution (80%-92% porosity) of four-layer gradient biological base suspended core and the dynamic response threshold of fuzzy PID algorithm, for the first time realizes the collaborative optimization of carrier structure parameters and control system parameters.The innovation technology not only improves the stability and diversity of ecological system, but also strengthens the natural purification capacity of water body, provides a new idea for water environment protection.

The utility model relates to the technical field of drainage of sponge cities, in particular to a siphon overflow well mouth structure of a sponge city, which comprises a well mouth, an overflow port is arranged on the well mouth, the upper end of the overflow port is connected with an overflow port well seat, an overflow well cover is connected in the overflow port well seat, and at least one pipe placing groove is arranged on the upper portion of the overflow port. A U-shaped pipe is connected into the pipe containing groove, the opening portion of an external pipe section of the U-shaped pipe faces the outside of the well mouth and does not make contact with the upper face of the well mouth, and an internal pipe section of the U-shaped pipe extends into the overflow opening. A central overflow port is formed in the middle of the overflow well lid; and a prompting assembly is movably inserted into the central overflow port. The drainage device is easy to construct, low in cost and good in drainage effect, and can indicate the position of a well mouth during waterlogging disasters.

The present application belongs to the field of live transportation of aquatic products, and relates to a method for live transportation of prawns without water. The core of the method is to use a staged treatment strategy and the synergistic effect of dormancy induction liquid and moisture supply liquid. First, the prawns are adapted to the environment by fasting and gradient cooling, then they are soaked in pre-cooled dormancy induction liquid to enter a pseudo-death dormancy state and reduce metabolism. Then, the moisture supply liquid soaked sponge is used as a transportation medium, which can form a protective film on the surface of the prawn body to effectively prevent water loss and provide energy. During transportation, the prawns treated with the moisture supply liquid are placed in a sealed box filled with pure oxygen together with the moist sponge, and the prawns are transported without water at low temperature. After the transportation is completed, the prawns are placed in warm water to quickly recover. The prawn live transportation method without water prolongs the survival time of prawns in a water-free environment, improves the transportation efficiency, is simple to operate, and is suitable for large-scale long-distance transportation of prawns.

This invention discloses a dynamic adaptive ecological slope protection system and method suitable for reservoir bank drawdown zone slopes, belonging to the field of water conservancy engineering and ecological restoration. The system includes an anchoring system, a lifting vegetation trough, an integrated water collection system, and a linked water supply device. The anchoring system uses self-weight triggered self-locking anchors to achieve locking upon installation. The vegetation trough can freely rise and fall along the anchors with the water level, and contains a soil layer and a water-storing sponge layer. The water collection system automatically controls water flow through a float valve, and the linked water supply device relies on elastic expansion and capillary action to achieve water storage during submersion and automatic water supply during emergence. Construction adopts a bottom-up modular installation, using the floating plate of the vegetation trough as a working platform, eliminating the need for high-altitude facilities. This invention can adapt to the off-season hydrological rhythm of the drawdown zone, improving slope stability and vegetation survival rate. It requires no external energy or human intervention and has advantages such as convenient construction, low operation and maintenance costs, and eco-friendliness, making it suitable for ecological protection of reservoir and lake drawdown zone slopes.

This invention discloses a method for constructing a "sponge" mining area in the subsidence zone of underground mining. It fully utilizes the large surface subsidence space caused by mining operations to purify, store, and utilize mine water resources, and restore the mining area's ecology. The method involves horizontally dividing the subsidence space into "purification-storage-utilization" functional zones and vertically reconstructing the soil into "isolation-conservation-nurturing" functional zones. Horizontally, the surface subsidence basin is divided into three water resource functional zones: a water purification zone, a water storage zone, and a water use zone. The water purification zone is located upstream of the gravity flow of mine water at the edge of the subsidence basin; the water storage zone is located in the center of the subsidence basin; and the water use zone is located downstream. This method not only restores mine land resources but also achieves multiple objectives, including improving the water environment, conserving water resources, restoring the aquatic ecosystem, ensuring water security, and utilizing water resources.

The application discloses a hot-press forming device for environment-friendly sponge production and belongs to the technical field of environment-friendly sponge production; the present application is used for solving the technical problem that the feeding of the sponge to be processed is uncertain, which easily causes the local area of the sponge to be processed to extend on the sealing structure between the molds, thereby causing the overall mold to have the phenomena of heat leakage and incomplete hot-pressing during the heat treatment of the sponge to be processed; the present application comprises a base frame, the top of the base frame is provided with a conveying frame, a drag chain is installed on the inner wall of the conveying frame, a feeding support plate connected with the drag chain is arranged at the top center of one end of the conveying frame, and a limiting top plate penetrating through the middle part of the conveying frame is arranged at the top center of the base frame; the present application carries out double-sealing space treatment on the early hot-pressing treatment, guarantees the hot-pressing treatment of the internal sponge and the internal locking of heat, and can also carry out qualified screening on the environment-friendly sponge after hot-pressing forming on the feeding support plate.

This invention discloses a method for preparing regenerated cellulose sponge, belonging to the field of cellulose processing technology. The invention uses a superbasic ionic liquid as a solvent to dissolve cellulose slurry, then adds a pore-forming agent, a foaming agent, and reinforcing fibers, mixes them, and proceeds with heating for foaming, anti-solvent coagulation for impurity removal, and finally chemical cross-linking with epichlorohydrin, washing, and drying to obtain the regenerated cellulose sponge. This invention features mild dissolution conditions, a stable system, and recyclable ionic liquid. Through a five-step process of dissolution, mixing, foaming, coagulation, and cross-linking, the resulting sponge has a density ≤0.11 g / cm³, a maximum wet tensile strength of 126 kPa, a water absorption rate of up to 31 times its own weight, and can be stably cyclically compressed more than 3000 times. It combines low density, high wet strength, high elasticity, and high water absorption, making it suitable for applications in cleaning, medical, and packaging fields.

The utility model discloses a drip irrigation device for recovering soil and vegetation in an arid region. The drip irrigation device comprises a header pipe, a plurality of branch pipes are distributed on the main pipe; one ends of the branch pipes away from the header pipe are connected with drip irrigation heads; the drip irrigation head comprises a spray head, the spray head is connected to the branch pipe, and a plurality of water outlet holes I are formed in the spray head; the spray head is sleeved with a shell, and a plurality of second water outlet holes are formed in the shell; and a sponge layer is arranged between the nozzle and the shell. Water is distributed into the branch pipes through the main pipe, the drip irrigation heads are connected to the ends, away from the main pipe, of the branch pipes, and the water can further flow into the spray heads of the drip irrigation heads. And a plurality of water outlet holes I and a plurality of water outlet holes II which are uniformly distributed on the spray head and the shell are used for preliminarily dispersing water. And a sponge layer is arranged between the spray head and the shell, so that external impurities can be effectively blocked, the impurities are prevented from entering the branch pipes from the water outlet holes I and the water outlet holes II, and blockage is avoided. And the water is uniformly and slowly dripped into the soil of the arid region, so that the recovery of the soil and vegetation is facilitated.

This item is a mark used for orientation during three-dimensional photo measurement, and is intended to be placed on the ground in a field where agricultural crops are grown. The item is made of a sponge-like absorbent material to prevent water droplets from remaining on the surface. Furthermore, to prevent mud from adhering to the top surface, the main body of the item is not flat or sheet-shaped, but has a three-dimensional shape with thickness in the height direction. Furthermore, the item has an identification mark on the top surface to allow identification from captured images. To improve visibility and automate work, the color of the side of the item can be changed depending on the size of the item's thickness in the height direction.

This item is a mark used for orientation during three-dimensional photo measurement, and is intended to be placed on the ground in a field where agricultural crops are grown. The item is made of a sponge-like absorbent material to prevent water droplets from remaining on the surface. Furthermore, to prevent mud from adhering to the top surface, the main body of the item is not flat or sheet-shaped, but has a three-dimensional shape with thickness in the height direction. Furthermore, the item has an identification mark on the top surface to allow identification from captured images. To improve visibility and automate work, the color of the side of the item can be changed depending on the size of the item's thickness in the height direction.

The invention provides a graded aperture hydrogen production reactor based on a gate sponge fractal structure. The graded aperture hydrogen production reactor is particularly suitable for efficient, compact and movable hydrogen production scenes in marine environments such as a ship power system taking fluid fuel as a raw material and an offshore hydrogen refueling station. The reactor is provided with a fractal graded aperture reaction cavity constructed based on lattice sponges, a reaction-heat supply integrated structure is integrated, different orders of lattice sponges are communicated with one another through a micro-channel array composed of straight channels or branched channels, and a multi-gradient coordinated regulation reaction area is formed. By virtue of the inherent cross-scale heat and mass transfer strengthening capability of the fractal structure and the self-adaptive matching characteristic of the gradient aperture to a multi-physical field, the conversion efficiency of fluid fuel and the hydrogen yield can be remarkably improved in ocean high-temperature, high-humidity, high-salt and vibration environments, and the comprehensive utilization efficiency of energy is strengthened; the operation stability and the modular expansion capability of the reactor are improved, and the urgent demand of an ocean mobile platform on efficient and reliable hydrogen production equipment is met.

The application provides a reference electrode device suitable for different seawater flow rate environments, which comprises a reference electrode assembly, a shell, a mounting piece and a signal cable, the shell comprises a porous ceramic shell, a semi-permeable membrane and a natural sponge, the natural sponge is arranged in the porous ceramic shell, the semi-permeable membrane is arranged on the inner wall of the porous ceramic shell, and the semi-permeable membrane is located between the inner wall of the porous ceramic shell and the natural sponge; the reference electrode assembly comprises a high-purity zinc reference electrode, the high-purity zinc reference electrode is at least partially located in the natural sponge, and the signal cable is electrically connected with the high-purity zinc reference electrode; the porous ceramic shell is fixedly connected with the mounting piece, and the mounting piece is used for being fixedly connected with a protected body. The reference electrode device suitable for different seawater flow rate environments can reduce or avoid the influence of seawater flow, has good potential stability in different seawater flow rate environments, can reduce or avoid the adhesion of marine microorganisms, and has a long service life.

The utility model relates to the related technical field of sponge manufacturing, and discloses an anti-deformation composite sponge which comprises a sponge body, the upper surface of the sponge body is fixedly connected with a connecting plate, the outer wall of the sponge body is provided with a shell, the upper surface of the connecting plate is fixedly connected with a fixing ring, the top end of the fixing ring is fixedly connected with a fixing column, and the fixing column is fixedly connected with the sponge body. The device comprises a shell, a fixed shell is fixedly connected to the interior of the shell, an upper layer ring is fixedly connected to the interior of the upper side of the fixed shell, a sliding rod is slidably connected to the interior of the upper layer ring, a connecting rod is fixedly connected to the top end of the sliding rod, and a connecting assembly is arranged in the interior of the lower side of the fixed shell and used for supporting the sliding rod. According to the utility model, the connecting rod is manually pulled, so that after the sponge body is used for a period of time, each part can be easily disassembled for cleaning and removing stains, peculiar smell, bacteria and the like, the cleanness and sanitation of the sponge are kept, and the service life of the sponge is prolonged.

The invention relates to the technical field of biomass resource utilization and medical biological materials, in particular to a method for preparing a hemostatic sponge based on sunflower stem pith and application of the hemostatic sponge. The hemostatic sponge is prepared from sunflower stem pith fragments and an adhesive through a deconstruction-recombination technology and meets the requirements of isotropic liquid absorption, non-isotropic liquid absorption and non-isotropic liquid absorption; the difference between the axial blood suction rate and the radial blood suction rate is smaller than or equal to 10%, the shape memory recovery rate within 30 seconds after blood suction is larger than or equal to 85%, and the blood coagulation time is 60-100 seconds. According to the sunflower stem pith-based hemostatic sponge, sunflower byproducts serve as raw materials, the water absorption capacity and the hemostatic efficiency of the sponge are improved by means of the hydrophilicity and the procoagulant characteristic of the sunflower byproducts, and the raw material cost is reduced by 90% or above compared with that of existing synthetic sponge; the sunflower stem pith-based hemostatic sponge is constructed based on deconstruction and structural recombination, the limitation of a natural sunflower stem pith anisotropic microstructure is improved, the sponge has isotropic liquid absorption, the difference between axial and radial blood absorption rates is smaller than or equal to 10%, the sponge has shape memory ability, the sponge is compressed to 50% of the original volume after blood absorption, and the recovery rate is larger than or equal to 85% within 30 s.

This invention belongs to the field of oil-water separation and environmental remediation materials technology, specifically disclosing a superhydrophobic melamine sponge with magnetic drive, photothermal synergy, and photo-Fenton dye degradation functions, as well as its preparation method. First, photothermal magnetic nanomaterial C@Fe3O4 is synthesized via a hydrothermal method. Then, a PDMS-cured system, C@Fe3O4, and CNT nanoparticles are ultrasonically dispersed in a hexane solution in a one-step process. Finally, the melamine sponge is immersed in the solution, ultrasonically cooled, and then dried and cured to obtain a superhydrophobic melamine sponge with magnetic drive, photothermal synergy, and photo-Fenton dye degradation functions. This process is simple, efficient, uses widely available raw materials, and is environmentally friendly. The prepared sponge not only possesses significant superhydrophobic properties but also exhibits excellent magnetic properties, efficient photothermal conversion effect, stable environmental adaptability, and excellent organic dye degradation performance. It can be efficiently applied to the recovery and purification of oil substances and organic reagents in complex marine environments.

The invention discloses a patterned composite substrate based on sponge protrusions and a preparation method thereof. The patterned composite substrate comprises a sapphire substrate; the plurality of sponge bulge microstructures are positioned on one side of the sapphire substrate in the thickness direction; the sponge bulge microstructure comprises a sponge skeleton structure, the sponge skeleton structure is prepared from a silicon nitride material, and three-dimensional interpenetrating network pores are formed in the sponge skeleton structure. According to the technical scheme, the transverse stress of epitaxial growth can be buffered by using the conical shape, the porosity and elasticity characteristics can be realized by using the three-dimensional interpenetrating network pores, and a template is further provided for stress relaxation and defect annihilation in epitaxial growth, so that a low-stress and low-defect epitaxial material layer can be obtained, the crystal quality is improved, and the yield of the epitaxial material layer is improved. And meanwhile, the reflection probability of LED light rays can be improved through refractive index transition, so that the luminous efficiency is improved.

The invention relates to the technical field of sponge materials, and provides a biochar-based sponge material and a preparation method thereof.The biochar-based sponge material is prepared from, by weight, 50-80 parts of polyurethane prepolymer; 10 to 20 parts of water; and 10-30 parts of powdered carbon. The polyurethane prepolymer reacts with water and then forms a uniform three-dimensional porous structure through a foaming effect, a cross-linked network endows the material with good elasticity and deformation resistance, the sponge is not prone to collapse in long-term use, the carbon powder is reasonably dispersed, microorganisms such as bacteria and molds can be captured through a physical adsorption effect, and the sponge has a good antibacterial effect. The nutrition supply required by metabolism and reproduction is blocked, so that the breeding of microorganisms is inhibited; meanwhile, the far infrared sponge has excellent far infrared emission characteristic, can stably emit far infrared rays with the wavelength of 4-14 microns, and is highly matched with the physiological far infrared wavelength of the human body, so that the far infrared emissivity of the sponge is improved, and the warm physical therapy effect on the human body is improved.

This invention belongs to the field of biomaterials and tissue engineering technology. It relates to a PRP-loaded dopamine-modified 3D nanofiber sponge and its preparation method. The PRP-loaded dopamine-modified 3D nanofiber sponge prepared by this invention utilizes a biomimetic design strategy, inspired by the adhesion mechanism of marine mussels, and employs PDA (polydopamine) surface modification technology to form a bioactive interface layer on the nanofiber surface. The active functional groups on the PDA surface bind with growth factors in PRP, forming a stable PDA-PRP composite functional layer. While maintaining the high porosity and suitable mechanical properties of the 3D nanofiber sponge, the biomimetic modification with polydopamine improves the loading efficiency of PRP and the interfacial bonding strength, thus extending the sustained-release period of growth factors.

The invention provides a sponge gutter inlet, which integrates drainage and sponge functions, can adapt to a narrow space, and is characterized by comprising a gutter inlet main body and a water storage structure, wherein the gutter inlet main body comprises a first functional part and a second functional part; a flow discarding channel is connected between the first functional part and the second functional part; an overflow structure is arranged at the junction of the first function part and the second function part; the first function part is further provided with a rainwater channel communicated with a rainwater pipe; and the second function part is provided with a water storage channel communicated with the water storage structure. According to the sponge gutter inlet, function integration is achieved, namely, the sponge gutter inlet has the collecting and discharging functions of a traditional gutter inlet and also has the functions of regulation and storage, infiltration and water purification of a sponge facility, and a large sponge facility does not need to be additionally arranged.