25results about How to "Avoid osmosis" patented technology

The invention discloses an environment-friendly gravel and stone slope anchor grouting device for reducing grouting back, comprising: a self-advancing anchor, a mounting ring and a pressure detector, wherein a hollow connecting pipe is fixedly mounted on the outer end of the self-advancing anchor, an elastic sealing member is slidably mounted on the outer end of the hollow connecting pipe, an outer wall of the elastic sealing member is fitted with a limiting plate, and an adjusting member is integrally mounted on the outer end of the limiting plate; the mounting ring is fixedly mounted on the outer end of the hollow connecting pipe, a clamping groove is provided on the inner end of the mounting ring, and the environment-friendly gravel and stone slope anchor grouting device for reducing grouting back can prevent slurry from overflowing when the predetermined position is not reached, thereby effectively preventing slurry from grouting back from the gap between the self-advancing anchor and the hole wall, facilitating the collection of the outflowing slurry, avoiding waste of materials, not causing pollution to the construction environment, facilitating subsequent cleaning, and reasonably adjusting the grouting pressure through a regulating valve to avoid excessive penetration and grouting of the slurry due to excessive pressure.

The present application relates to the technical field of castables, and specifically discloses a high-performance hawk beak castable and a preparation method thereof. A high-performance hawk beak castable, using a first aggregate and fused white corundum as aggregates, composite coated graphite powder, silicon nitride, α-alumina micropowder, silicon dioxide micropowder and barium sulfate as powders, calcium aluminate cement as a binder, sodium hexametaphosphate and sodium tripolyphosphate as composite dispersants, tri(2-hydroxypropionic acid) aluminum salt and an active agent as adjuvants, and is cast, heat-insulated, and fired in two stages. The high-performance hawk beak castable prepared in this application has the characteristics of high flexural strength and compressive strength, small permanent linear change rate, expansion resistance, good thermal shock stability, good burst resistance, and metal corrosion resistance.

The invention relates to a high-antibacterial absorbable medical suture and a preparation method thereof, and belongs to the technical field of medical materials. According to the suture line, PPDO serves as a base material, PLGA is introduced to wrap TCS through a melt blending and spinning technology, and a TCS-coated PLGA core-shell structure antibacterial agent is prepared. A gradient degradation release system is constructed by utilizing the characteristic that PLGA is faster in degradation than PPDO, so that TCS is slowly and continuously released, and the defects of explosive release and insufficient later concentration of drugs in a traditional direct blending method are overcome. Meanwhile, the core-shell structure effectively avoids destructive pores formed in a PPDO matrix due to rapid dissolution of drugs, and greatly maintains the mechanical integrity of the matrix, so that the suture line can provide stable supporting force similar to that of a pure PPDO line in a key healing period in vivo, and the synergism and unification of long-acting antibacterial property, lasting mechanical supporting property and high operation reliability are realized.

The invention belongs to the technical field of fuel cell proton exchange membranes, and discloses a cross-linking type polybenzimidazole proton exchange membrane with oxidation resistance and high proton conductivity and a preparation method of the cross-linking type polybenzimidazole proton exchange membrane. According to the cross-linking type polybenzimidazole, after polymerization of raw material monomers is completed, a silane coupling agent is added as a cross-linking agent, and polybenzimidazole containing the cross-linking agent is obtained through reaction. The polybenzimidazole containing the cross-linking agent can be prepared into a cross-linking type polybenzimidazole proton exchange membrane by using a solution casting method. According to the cross-linked polybenzimidazole disclosed by the invention, a stable and uniform Si-O-Si cross-linked network is constructed by adding the cross-linking agent and taking a hydroxyl group on the polybenzimidazole as a main reaction site, so that synchronous improvement of antioxidant stability and proton conductivity is synergistically realized. The polybenzimidazole proton exchange membrane containing the cross-linking agent has a good application prospect in the aspect of proton exchange membrane fuel cells.

The invention relates to the field of anticorrosive paint, in particular to hyperbranched epoxy resin anticorrosive paint and a preparation method thereof. The coating is a two-component system, wherein a component A comprises an epoxy resin main body, 5-20 parts of a hydroxyl-terminated hyperbranched polyester modifier, a flaky filler, an anti-rust pigment, a reactive diluent and an auxiliary agent; the algebra of the hyperbranched polyester is G2-G4, and the hyperbranched polyester is prepared by melt polycondensation of trimethylolpropane and 2, 2-dimethylolpropionic acid; and the component B is a polyamide curing agent. The preparation method comprises the following steps: synthesizing hyperbranched polyester; pre-mixing the component A with epoxy resin, grinding and dispersing with filler and auxiliaries, and mixing paint to obtain a component A; mixing a curing agent with a coupling agent to obtain a component B; by utilizing the unique structure of the hyperbranched polyester, the epoxy coating is obviously toughened on the premise of not losing the hardness, the viscosity of the system is reduced, the constructability and the filler dispersity are improved, and finally the high-performance coating with impact resistance, strong adhesion and long-acting corrosion resistance is obtained.

The present application relates to the technical field of paint, in particular to a polyurethane powder coating with good heat preservation and insulation performance, which is configured according to the mass fraction of each raw material: 25-40 parts of hydroxyl acrylic acid resin; 10-20 parts of hexamethylene diisocyanate trimer; 8-18 parts of rice husk ash derived porous silica microspheres; 5-15 parts of waste tire rubber powder modified carbonized particles; 3-8 parts of functional filler; 0.5-1.5 parts of polyethylene wax leveling agent; and 0.2-0.8 parts of polyether modified silicone defoaming agent. In the present application, the thermal bridge effect caused by interface defects can be reduced, the porous structure can significantly reduce the overall thermal conductivity of the coating through the synergistic effect of scattering thermal radiation, inhibiting gas molecular convection and conduction and prolonging the solid heat conduction path, and this structural characteristic makes it an ideal insulation functional unit, thereby greatly improving the heat preservation performance of the coating.

This invention belongs to the field of environmentally friendly fuel technology, specifically relating to a method for preparing a green, low-carbon, and highly efficient modified fuel for alcohol-hydrogen engines. This invention comprehensively improves fuel performance through a progressive synergistic architecture of a bio-methanol platform – an oxygen-containing combustion-promoting system – a stability barrier – and a low-energy-consumption blending path. Using bio-methanol as a base, it optimizes combustion by compounding with oxygen-containing components such as 2-MTHF and DMM / MF, achieving rapid ignition, emission reduction, and noise reduction. Phase behavior is regulated by isobutanol and polyether-modified silicon, achieving a reversible and stable phase without the need for high-HLB surfactants, preventing deposition and gas lock. A four-fold protective barrier is constructed using GMO and fluorinated silica polyethers, combined with antioxidant synergy to achieve corrosion resistance and aging resistance. The process adopts a sequential design of front-end purification – mid-stage two-phase construction – and end-stage static mixing, achieving low-energy homogenization and ensuring storage, transportation, and operational stability.

The invention discloses a tulobuterol transdermal patch with a gradient drug release structure and a preparation method of the tulobuterol transdermal patch, belongs to the technical field of transdermal drug delivery systems, and aims at solving the problems that an existing single-layer tulobuterol patch takes effect slowly and is insufficient in later-stage drug release power. The transdermal patch sequentially comprises a backing layer, a gradient medicine-containing substrate layer and an anti-sticking release layer from top to bottom, the gradient drug-containing matrix layer comprises a high-concentration top long-acting drug release layer containing tulobuterol-mesoporous silica nanoparticles and a silicone adhesive, a middle-concentration middle stable drug release layer containing an SIS hot melt adhesive, and a low-concentration bottom quick-acting contact layer containing a specific penetration enhancer composition and an acrylate adhesive from top to bottom in sequence. Through the synergistic effect of bottom-layer penetration promoting driving, middle-layer stable transition and top-layer nanometer storage cavern relay, the traditional concentration barrier is broken through, and rapid effect taking within 1-2 hours and stable-state long-acting drug release within 24 hours or above are perfectly considered.

The utility model discloses a kind of anticorrosive structures of concrete pool, the anticorrosive structure includes a concrete pool main body and a anticorrosive structure main body being set in the concrete pool main body, the anticorrosive structure main body includes sequentially connected from bottom to top: a reinforced concrete component layer being fixedly connected at the bottom of the concrete pool main body;A waterproof layer;A first vinyl resin layer;A glass fiber short-cut felt layer;A second vinyl resin layer;A first glass fiber layer;A third vinyl resin layer;A second glass fiber layer;A fourth vinyl resin layer;A third glass fiber layer;And a fifth vinyl resin layer.The utility model effectively solves the problem that the anticorrosive force of existing concrete pool is limited, and corrosion failure is likely to occur during long-term use, and concrete pool is also likely to crack and permeate, which affects normal use.

The present application relates to chip technology field, specifically a kind of coreless substrate manufacturing method.It is characterized in that: including the following steps: S1, laser slot is opened on substrate, and chip is buried in slot;S2, filling colloid;S3, laser hole is shot;S4, filling laser hole, while using 3D printing to print L1 circuit layer;S5, form L2 copper layer;S6, form L2 circuit layer;S7, form L3 copper layer;S8, punch in L3 copper layer;S9, form L3 circuit layer, and connect L1 circuit layer, L2 circuit layer, L3 circuit layer;S10, make solder resist layer and copper surface opening;S11, cutting.Compared with prior art, in chip is placed on the substrate of organic polymer resin, with the rigidity of organic resin bearing, the yield can be avoided to be influenced because of board warping during manufacturing process.3D printing technology and traditional coreless substrate manufacturing technology can shorten the manufacturing process of substrate, save cost and substrate manufacturing time, can improve the efficiency of substrate manufacturing.

The utility model discloses a kind of exosome concentration preparation devices, comprising: cover, exosome tank, connector, concentration tank and regulator, the cover, exosome tank, connector, concentration tank and regulator are sequentially arranged from top to bottom, the upper and lower ends of the exosome tank and concentration tank are respectively provided with first thread groove and second thread groove, the inside middle part and inside lower of the connector are respectively provided with annular clamping groove and step, the top of the step is equipped with dialysis membrane, and the top of the dialysis membrane is equipped with grid support. The utility model can adjust the addition amount of concentrated agent by adjusting the height position of piston, ensure that concentrated agent and dialysis membrane are in close contact, can also extrude water-absorbing sponge type concentrated agent to discharge moisture, restore its water absorption performance, improve the rate of reuse, and the device is connected by thread, and the components are assembled and disassembled conveniently, suitable for laboratory rapid processing large volume sample, without relying on complex equipment such as ultracentrifugation.

The invention provides a resin composition, application of the resin composition in preparation of a copper-clad plate and the copper-clad plate, and relates to the technical field of copper-clad plate preparation, and the resin composition comprises the following raw materials: hydroxyl-modified low-molecular-weight polyphenyl ether, bismaleimide resin, a trifluoromethyl-containing bifunctional isocyanate cross-linking agent, a filling material and an initiator. A fluorine-containing polyurethane cross-linked network is constructed by introducing a trifluoromethyl-containing bifunctional isocyanate cross-linking agent, so that the water absorption and dielectric loss of the material are reduced, the dielectric stability after damp and hot is improved, and the heat resistance, dimensional stability and comprehensive reliability of a cured product are improved; therefore, the application requirements of high-frequency and high-speed copper-clad plates, antennas / radars and millimeter wave device materials are met.

This invention discloses a carbon-plastic bipolar plate for a zinc-bromine flow battery, its preparation method, and its application, belonging to the field of electrochemical energy storage technology. The method includes: dispersing nitrogen-doped hollow carbon nanotubes and spraying them onto the positive electrode side of a carbon-plastic bipolar plate; after drying, a nitrogen-doped hollow carbon nanotube-modified positive electrode carbon-plastic bipolar plate is obtained; dispersing boron-nitrogen co-doped carbon and spraying it onto the negative electrode side of a pretreated carbon-plastic bipolar plate, after drying again, a boron-nitrogen co-doped carbon-plastic negative electrode carbon-plastic bipolar plate is obtained. On the positive electrode side, the nitrogen-doped hollow carbon nanotubes catalyze the bromine reaction through nitrogen doping, reducing the overpotential; the hollow structure adsorbs bromine species and uses charge action to inhibit bromine permeation, reducing self-discharge. On the negative electrode side, the boron-nitrogen co-doped carbon uses B-N zinc-loving sites to guide uniform and dense zinc deposition, inhibiting dendrite formation; and inhibits hydrogen evolution through charge regulation. Both methods synergistically improve the bromine barrier performance, reaction kinetics, and dendrite suppression ability of the carbon-plastic bipolar plate.

The invention discloses a solid wood bookshelf with the shelf height capable of being rapidly adjusted, and relates to the technical field of furniture design and manufacturing, the solid wood bookshelf comprises a bookshelf body, a spraying mechanism is arranged at the top of the bookshelf body, a pressurizing mechanism is arranged at the top of the bookshelf body, a drying mechanism is arranged on the side wall of the bookshelf body, and insect prevention liquid in a container is pressurized; the spraying force of the liquid can be increased, so that the insect prevention liquid can be better sprayed to a target site, the coverage area and uniformity of the sprayed liquid are improved, the insect prevention liquid is sprayed to the surface of the solid wood bookshelf, a layer of protective film can be formed on the wood surface, insect attack invasion is prevented, chemical components in the insect prevention liquid can effectively inhibit or kill insect attack, and the insect prevention effect is good. And drying is conducted after insect prevention liquid is sprayed, drying can help the insect prevention liquid permeate into the surfaces and textures of the wood better, and the insect prevention effect is improved.

The invention relates to a preparation process of an ultra-clean container with a hydrofluoric acid-resistant lining film, and belongs to the technical field of high polymer materials. According to the invention, the surface corona treatment is carried out on the PFA material to improve the adhesion to the adhesive, the PFA material is bonded with the inner wall of the HDPE ultra-clean container with the surface treated by the silane coupling agent to obtain the ultra-clean container with the lining film, and a layer of fluoride compound protective film is formed on the surface of the PFA material in the hydrofluoric acid and high-concentration concentrated sulfuric acid environment, so that the service life of the ultra-clean container is prolonged, and the service life of the ultra-clean container is prolonged. The protective film can effectively prevent erosion and permeation, so that excellent hydrofluoric acid resistance and 98% concentrated sulfuric acid resistance are achieved.

The invention discloses a mechanical pressure automatic regulator of an underwater booster pump spacer fluid system. The mechanical pressure automatic regulator comprises a supply valve and a release valve. The supply valve is provided with a first transportation cavity and a first pilot cavity, a supply valve element control spacer fluid supply outlet is arranged in the first transportation cavity, a first pilot piston is arranged in the first pilot cavity and connected with the supply valve element through a first valve rod, the first valve rod is sleeved with a first corrugated pipe to form a first working medium cavity, and a first spring is arranged in the first transportation cavity. The release valve is provided with a second transportation cavity and a second pilot cavity, a release valve element control spacer fluid release outlet is formed in the second transportation cavity, a second pilot piston is arranged in the second pilot cavity and connected with the release valve element through a second valve rod, the second valve rod is sleeved with a second corrugated pipe to form a second working medium cavity, and a second spring is arranged in the second transportation cavity. On the basis of a pressure difference dominated adjusting mode, supply and discharge of the spacer fluid are automatically adjusted by sensing the pressure difference between the spacer fluid and the working medium, and the pressure balance of the system is maintained.

The utility model discloses a kind of cartridge-replacing type leak-proof electronic atomizer, comprising: cartridge, the cartridge includes cigarette holder, first oil cup support, second oil cup support and atomization component, first installation cavity is formed on the first oil cup support, the second oil cup support is inserted on the first installation cavity and is buckled with the first oil cup support, the cigarette holder is buckled with the first oil cup support after wrapping the second oil cup support, first air inlet hole in communication with first installation cavity is equipped on first oil cup support, the upper end of the atomization component is set in the oil storage cavity, the lower end of the atomization component is placed in the first installation cavity, and first conductive terminal is led out and passes through the first installation cavity;Host, host shell is provided on the host, battery support is provided in the inside of host shell, battery component and control component are provided.The utility model can prevent oil leakage into host, leading to the occurrence of failure.

The utility model provides a kind of heat insulation energy-saving window of window screen integration, comprising: window frame, the inside of the window frame is separated into three parts by middle column;Wherein the upper left corner part is provided with unit window sash, and the remaining part is respectively embedded with first glass and second glass;By setting multiple protruding parts (such as first protruding part A, fifth convex A / B etc.) on middle column, window frame and glass fan and the accurate cooperation with main pressure line, pressure seat, sealing rubber strip, multiple sealing structure is formed.Especially the snap design of the main body of main pressure line and first protruding part A, and the embedded structure of fifth sealing rubber strip A, B between pressure line, pressure seat and installation convex, effectively improve the sealing performance between glass and profile, prevent temperature loss, rainwater penetration and dew phenomenon.

This invention relates to a salt spray resistant and anti-aging curing coating and its preparation method, belonging to the field of coating technology. The coating includes modified epoxy resin, ternary nanocomposite filler, composite light stabilizer, hydrophobic eutectic solvent, polysiloxane-modified aromatic amine curing agent, and bio-based polyurethane curing agent. The modified epoxy resin is prepared by reacting bisphenol F epoxy resin, KH-560 silane coupling agent, and tetrabutylammonium bromide, followed by the addition of bi-terminated epoxy silicone oil, 3,3'-dithiodipropionic acid, and p-toluenesulfonic acid, and then by adding pentaerythritol phosphate and antioxidant 1010. The polysiloxane-modified aromatic amine curing agent is prepared by reacting m-phenylenediamine as a matrix, KH-560 silane coupling agent, diphenylsilanediol, and dibutyltin dilaurate. The bio-based polyurethane curing agent is prepared by reacting castor oil-modified polyol, isophorone diisocyanate, dibutyltin dilaurate, dimethylolpropionic acid, and trimethylolpropane.

The utility model belongs to the technical field of magnetic drive pumps, and particularly relates to a pump body and motor connection sealing structure which comprises a rear shell, a motor cylinder body, a rear shell isolation sleeve, a pump body, a concave sealing ring, an annular groove sealing ring and a gap sealing ring. The rear shell isolation sleeve is sleeved in the motor cylinder body, the rear shell and the motor cylinder body form a binding surface, the binding surface is provided with an annular groove with a concave cross section, the concave sealing ring is arranged in the annular groove, and the concave sealing ring is arranged in the annular groove. The annular groove sealing ring is installed between the rear shell, the motor cylinder body and the pump body, the gap sealing ring is installed between the pump body and the rear shell isolation sleeve, and the components are sealed through the sealing rings to form a triple sealing structure. And internal and external liquid leakage and internal permeation corrosion to the end face of the motor cylinder body are effectively prevented, and equipment safety is effectively protected.

The invention belongs to the technical field of medical packaging materials, and relates to a polyethylene-coated butyl rubber plug for an injection bottle and a preparation process of the polyethylene-coated butyl rubber plug. The invention aims to solve the problem that a film coating layer of a traditional film-coated rubber plug cannot completely cover the surface of the rubber plug. The preparation method comprises the following steps: carrying out polymerization reaction on a fluorosilicone monomer and a polyethylene monomer to synthesize a fluorosilicone coating precursor, and further carrying out dispersion treatment to obtain the modified fluorosilicone coating. Performing post-vulcanization treatment and edge removal treatment on the butyl rubber plug to obtain an edge-removed rubber plug; cleaning the edge-removed rubber plug by using an organic solvent and air plasmas, and carrying out surface treatment by dipping to obtain a pretreated rubber plug; and coating the modified fluorosilicone coating on the surface of the pretreated rubber plug through vacuum evaporation to form the full-coating polyethylene butyl rubber plug. The polyethylene-coated butyl rubber plug prepared by the preparation method disclosed by the invention meets the medicinal standard and has relatively high antibacterial property and chemical stability.

The application discloses a kind of high anti-sputtering drainage asphalt mixture and preparation method thereof, it is related to bitumen technical field.The raw materials of asphalt mixture include matrix asphalt, styrene-butadiene-styrene block copolymer, butyronitrile rubber microsphere, carboxyl silicone oil, composite modified aggregate, composite additive, graphene oxide mixed solution, calcium lactate.The preparation method of asphalt mixture includes the steps of composite modified aggregate preparation, preparation of graphene oxide mixed solution, preparation of composite additive, and preparation of asphalt mixture.The drainage asphalt mixture prepared by the application has strong anti-sputtering performance, excellent drainage performance and good anti-rutting performance.

The utility model provides an angle-adjustable nozzle for high-pressure cleaning, which comprises a shell, and a control device is in threaded connection with the right side of the shell to adjust the strength of water flow and the change of the direction of the water flow, so that different conditions can be more flexibly coped with. And a dispersing device is mounted on the side, away from the shell, of the control device, so that the device is convenient to maintain and replace, the practicability of the device is improved, and water flow leakage and leakage can be prevented by using a sealing gasket. The left side of the shell is in threaded connection with the joint fixing nut, the rotating joint is arranged on the right side of the joint fixing nut, the water inlet hole communicated with the shell is formed in the rotating joint, and after the rotating joint is connected with an external water outlet pipeline, liquid flow enters the shell along the water inlet hole in the rotating joint. By adjusting the angle of the spray head, the coverage range and the pressure of the cleaning liquid can be better controlled according to needs, and therefore dirt can be more effectively removed.

The utility model provides a cleaning accessory of a mop, which comprises a collodion component, a cleaning component, a cleaning component and a cleaning component, wherein the collodion component is provided with a first collodion body and a second collodion body; the isolation part is arranged between the first collodion body and the second collodion body and used for preventing the cleaning liquid sucked in the first collodion body and the cleaning liquid sucked in the second collodion body from being mixed with each other; the technical problem that cleaning efficiency is affected due to insufficient cleanliness of cleaning liquid when the collodion is used on the front face and the back face of an existing mop cleaning head due to the fact that the cleaning liquid in the collodion is mixed and polluted is solved, and cross permeation and pollution of the cleaning liquid in the process that the front face and the back face are alternately used are avoided. Therefore, the cleaning liquid in the collodion body which is in contact with the ground for the first time is kept high in cleanliness during use, the dirt-removing power and the cleaning effect are improved, the cleaning liquid is not mixed any more, a user can conduct continuous or alternate cleaning operation through the first collodion body and the second collodion body in the actual use process, and the cleaning efficiency is improved. The collodion cotton part does not need to be frequently returned to be cleaned, and the cleaning interruption frequency in the cleaning process is reduced.

The utility model discloses a movable anti-aging outdoor house, which comprises a house body, a fixing assembly is arranged at the bottom of the house body, the fixing assembly comprises a bottom plate, a bottom frame, fixing frames, fixing frames and second bolts, the bottom plate is arranged at the bottom of the house body, the bottom frame is arranged at the bottom of the bottom plate, the fixing frames are uniformly arranged on the bottom frame, and the fixing frames are uniformly arranged on the bottom plate. Every two fixing frames form a group, the fixing frames are detachably arranged on the inner sides of the fixing frames in each group, the second bolts are detachably arranged between the fixing frames and the fixing frames, the house body is provided with a protection assembly, the protection assembly comprises a connecting frame, a protection frame and a roof, the connecting frame is arranged in the house body, and the protection frame is arranged on the roof. The protective frame is arranged on the top of the connecting frame, and the roof is installed on the top of the house body, so that the technical problem that in the background technology, after an existing outdoor house is moved to a preset position, an effective and convenient fixing device is lacked is solved.