514 results about "Protective barrier" patented technology

The invention relates to the technical field of metal surface engineering, and discloses a laser cladding layer based on copper-magnesium-titanium-zirconium gradient design and a preparation method thereof.The preparation method comprises gradient structure design, a microstructure strengthening mechanism, a laser cladding process and thermal field control. By constructing a copper-magnesium-titanium component gradient transition structure and matching the thermal expansion coefficient difference between a matrix and a coating in real time, interface thermal stress accumulation can be dynamically inhibited, the crack defect caused by thermal expansion mismatch of a traditional cladding layer is avoided, ordered diffusion of elements at the interface is promoted through gradual change of gradient components, and the thermal conductivity of the cladding layer is improved. The metallurgical bonding reliability of the coating and a base body is improved, meanwhile, a stable coating is formed, the long-term service stability under the extreme working condition is guaranteed, a microstructure strengthening mechanism regulation and control means is adopted, the coating has a stable and effective protective barrier in a corrosive medium environment, and the problem of performance degradation caused by structure defects of a traditional cladding layer is solved.

The invention discloses an alkali-reducing protective agent for a reinforced cement-based cementing material for basalt fibers and application of the alkali-reducing protective agent, and belongs to the technical field of building materials. The alkali-reducing protective agent is prepared from the following raw materials in percentage by weight: 20 to 40 weight percent of active silicon dioxide aerogel, 15 to 30 weight percent of metakaolin, 10 to 25 weight percent of lithium slag powder, 5 to 15 weight percent of nano calcium carbonate, 3 to 8 weight percent of redispersible latex powder, 1 to 5 weight percent of water reducing agent and 0.5 to 2 weight percent of retarder. The invention also discloses an application of the alkali-reducing protective agent in a cement cementing material. According to the invention, the alkalinity of a set cement hole solution around the basalt fiber can be efficiently and enduringly reduced, physical and chemical dual protection barriers are formed on the surface of the basalt fiber, the alkali corrosion of the fiber is obviously delayed, and the long-term durability and enhancement efficiency of the basalt fiber are greatly improved.

The invention provides air purification equipment applied to wafer detection and a wafer detection system.The air purification equipment comprises a rack and an air supply part, an outer protection cavity, a light path cavity and a detection cavity are formed in the rack, the light path cavity and the detection cavity are formed in the outer protection cavity, and the air supply part communicates with the outer protection cavity, the light path cavity and the detection cavity; the air pressure in the detection cavity is greater than the air pressure in the light path cavity, and the air pressure in the light path cavity is greater than the air pressure in the outer protection cavity. The light path cavity and the detection cavity are arranged in the outer protection cavity, and a gradient air pressure system in which the air pressure of the detection cavity is higher than that of the light path cavity and the air pressure of the light path cavity is higher than that of the outer protection cavity is constructed, so that multiple protection barriers are formed, external pollutants are effectively prevented from invading a core working area, and the cleanliness control effect is improved; and the requirement of nanoscale wafer detection on the environment is met.

The utility model discloses a polyurethane watertight photoelectric composite cable, and relates to the technical field of watertight photoelectric composite cables. The composite cable comprises the outer sheath, the inner sheath, the optical fiber unit and the power line, the inner sheath is arranged in the outer sheath, the overall use strength of the composite cable is improved through the outer sheath and the inner sheath, and the armor layer is arranged between the outer sheath and the inner sheath, so that even if the outer sheath is broken, the optical fiber unit can be prevented from being damaged, and the service life of the composite cable is prolonged. The inner sheath is protected through the armor layer, the first water-blocking tape is made of a material formed by compounding polyester fibers and a high-water-absorption material after meeting water, and when water enters a cable port using the water-blocking tape, high-water-absorption powder or a water-swelling material contained in the water-blocking tape can absorb the water through the water absorption performance of the high-water-absorption powder or the water-swelling material. And the water-blocking tape expands to become gel to form a protective barrier for preventing water from flowing, namely, the protective barrier performs waterproof protection between the broken part of the outer sheath and the armor layer.

The invention relates to the field of cables, and discloses a high-voltage fire-resistant cable, which comprises an outer layer, a skeleton structure is arranged in the outer layer, a plurality of groups of wire cores are arranged between the skeleton structure and the outer layer at equal intervals, and a reinforcing core is arranged in the skeleton structure. A middle fireproof layer adopts a ceramic silicone rubber composite system (containing 25 parts of phlogopite, 8 parts of nanometer aluminum oxide and a ceramic accelerant) with an optimized proportion, a hard protective shell with the density being larger than or equal to 1.8 g / cm < 3 > can be rapidly ceramized at the temperature of 320 DEG C, the synergistic flame-retardant effect of surface layer high-flame-retardant PVC (the oxygen index is 32) is matched, and the flame-retardant effect is good; the cable can continuously block heat permeation in flame of 950-1000 DEG C for 180 minutes, the temperature of the inner layer is stably controlled to be below 180 DEG C and is far lower than the insulation tolerance limit of a cable core, the pain point of'rapid failure in fire 'of a traditional cable is thoroughly solved, and golden rescue time is won for power emergency guarantee in key scenes such as high-rise buildings and subway tunnels.

The invention discloses a flexible wear-resistant charging cable, and relates to the technical field of charging cables. The first cable protection section and the second cable protection section both wrap the outer surface of the cable main core, the first cable protection section and the second cable protection section are fixedly connected through a connecting leather sheath, and the outer surface of the first cable protection section is sleeved with an anti-abrasion wrapping layer used for increasing abrasion resistance. The upper surface of the second cable protection section is sleeved with an upper wrapping layer with the same function as the anti-abrasion wrapping layer. The silica gel folding-resistant strips are fixedly connected to the inner wall of the first protection section of the cable, the surface of the second protection section of the cable is provided with a wear-resistant assembly, and the silica gel folding-resistant strips are annularly distributed along the inner wall of the first protection section of the cable at equal intervals, so that fatigue fracture caused by local stress concentration is avoided; the upper wrapping layer and the lower wrapping layer respectively resist upper scraping and lower friction to form a bidirectional protective barrier, the wear-resistant blocks on the surface of the lower wrapping layer prevent the sheath layer from directly contacting with the ground, and the service life of the sheath is prolonged.

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 discloses a preparation process of a high-temperature-resistant metal protective coating, and relates to the technical field of protective coatings. According to the coating, an inorganic material which is stable at high temperature is compounded with an organic polymer to form a matrix with excellent high-temperature resistance, and an anti-corrosion filler is added to improve the corrosion resistance and the wear resistance. Through a specific preparation process, the coating and the metal substrate are tightly combined to form a compact protective barrier. The coating provided by the invention has excellent high-temperature resistance, corrosion resistance and adhesive force, and is suitable for metal structure protection in a high-temperature environment.

The invention relates to a novel oil seal for a bearing unit, which comprises an external sealing element and an internal sealing element which can rotate relatively, the external sealing element is hermetically connected with the inner wall of a bearing outer ring, and the internal sealing element is hermetically connected with a bearing inner ring; a first protective barrier is formed through the first bend arranged on the first metal framework, so that external silt is not prone to directly impacting the second sealing lip. And then through three-stage sealing of the second sealing lip, the third sealing lip and the fourth sealing lip, water vapor is prevented from entering. Three contact lips are arranged on the first sealing lip, and three-level sealing is achieved. The bearing further has the sealing effect that an integrated structure is formed by sealing of the annular protrusion and the bearing inner ring, sealing of the first sealing layer and the bearing outer ring and sealing of the second sealing layer, and a third sealing layer at the end of the supporting ring enables the first rubber layer to be connected with the supporting ring more firmly. The whole oil seal is provided with 11 sealing structures, rubber sealing is arranged on the outer periphery, the inner periphery and the end face, and water vapor can be prevented from entering the oil seal.

The invention relates to a protective barrier for catching a moving object, comprising a net and a supporting structure (6); wherein the supporting structure (6) stretches out and fastens the net (2); and wherein the net (2) has at least a first cable (90) and a second cable (91) with a respective thickness, wherein the net (2) is connected by the first cable (90) and the second cable (91), and the net (2) has at least one connection point (7), wherein the connection point (7) has a thickness, and the thickness of the connection point (7) corresponds at most to twice the thickness of the first cable (90) or to twice the thickness of the second cable (91), wherein the first cable (90) and the second cable (91) contain polyethylene, and the stretched-out net has an energy weight class of 500 kJ / (kg / m2) or more.

This invention discloses a lightweight, flame-retardant, medium-voltage aluminum alloy cable for new energy charging stations, relating to the field of aluminum alloy cable technology. It includes a cable core and an aluminum alloy armor layer and an outer sheath layer sequentially wrapped around the cable core from the inside out. The aluminum alloy armor layer consists of an inner armor layer and several outer armor layers fitted onto the inner armor layer. The two ends of the outer armor layers are slidably connected to the inner armor layers, and a thermal expansion agent is filled between adjacent outer armor layers. The inner surface of the outer armor layer has several annularly distributed guide rods, and the inner armor layer has several grooves corresponding to and slidably sealed to the guide rods. Component B is encapsulated in the grooves, and component A is encapsulated in the guide rods. The lower end of the guide rods has a valve that allows component B to enter component A to react and release the flame-retardant material. This invention improves the flame-retardant performance of the aluminum alloy cable by creating a chemical-physical protective barrier through the interlocking of the thermal expansion agent and the outer armor layer.

This utility model discloses a probe protection device, specifically relating to the field of probe protection technology. It includes a telescopic mechanism, with support components symmetrically and fixedly connected to the upper part of the telescopic mechanism away from its axis. A turntable is rotatably connected to the upper end of the support components, and a second turntable is rotatably connected to the inner cavity of the first turntable. A protective mechanism is fixedly connected to the lower end of the telescopic mechanism, and a probe head is fixedly connected to the inner cavity of the protective mechanism. This utility model, through its protective mechanism, provides an additional protective barrier when the probe is in operation, effectively resisting and buffering impacts from splashed molten slag, falling materials, or other mechanical parts from inside the furnace. It provides a solid barrier when the probe is not in use, and simultaneously, the protective structure provides a safe storage environment, preventing damage to the probe due to accidental collisions, drops, or other reasons.

The utility model relates to the technical field of assembly type buildings, and discloses a fast assembly type assembly handrail for buildings, which comprises a bottom plate, an installation mechanism is arranged at the top of the bottom plate, a protection mechanism is arranged on the surface of the installation mechanism, the installation mechanism comprises a fixing plate, the fixing plate is arranged at the top of the bottom plate, and the protection mechanism is arranged on the surface of the fixing plate. And limiting grooves are formed in the two sides of the fixing plate correspondingly, stand columns are inserted into the limiting grooves and fixedly connected to the top of the bottom plate, and transverse plates are fixedly connected to the bottoms of the stand columns. Compared with a traditional integrated handrail, the rapid assembly type assembled handrail for the buildings has the advantages of being small in occupied space and convenient to carry through the arranged installation mechanism, common lateral impact force in the building construction process can be effectively resisted through the arranged protection mechanism, and the assembly type assembled handrail for the buildings has the advantages of being convenient to carry and high in practicability. And a reliable safety protection barrier is provided for field operation personnel.

The utility model discloses a feeding device for gypsum powder production, which relates to the field of feeding equipment and comprises a bucket elevator, a discharging pipe is fixedly mounted on the upper portion of the bucket elevator and sleeved with a material bundling assembly, the material bundling assembly comprises a material bundling pipeline, and dust removal assemblies are fixedly mounted on the discharging pipe and the material bundling pipeline. The dust removal assembly is composed of a dust suction fan, a dust removal pipeline, a protective blocking net and a dust filtering assembly, the dust removal pipeline is fixedly connected with the dust suction fan, and flying dust generated in the gypsum powder discharging process can be effectively collected by arranging the dust removal assembly composed of the dust suction fan, the dust removal pipeline, the protective blocking net and the dust filtering assembly; the dust concentration in a workshop is remarkably reduced, the working environment is improved, the cleaning and maintenance cost is reduced, the material loss can be reduced, the production efficiency is improved, the production cost is reduced, meanwhile, filtered clean air can be directly discharged, and the environmental protection requirement is met.

The utility model relates to the technical field of safety protection, and discloses a safety protection mechanism for construction in an ancient building, which is characterized in that the outer walls of two sides of a mounting rod on the left side of the bottom are provided with chutes, the inner walls of the chutes are connected with a bolt in a sliding manner, the outer walls of two sides of the bolt are hinged with sleeve blocks, and the inner wall of the tail end, close to the chutes, of the mounting rod is inserted with limiting blocks; the inner walls of the two ends of the limiting block are sleeved with sliding blocks correspondingly, connecting rods are arranged on the outer walls of the two sides, close to the limiting block, of the sliding groove, and the outer walls of the two connecting rods are sleeved with compressed springs. Through the arrangement of the clamping blocks and the sleeve block, the front end of the sleeve block rotates downwards to abut against the ground, then the two clamping blocks tightly clamp the two sides of the tail end of the sleeve block, and the sleeve block is firmly fixed to the current position through friction force and clamping force; in this way, the effect of stably unfolding and fixing the protective door is achieved, and a reliable protective barrier is provided for a construction area in an ancient building.

Abstract Present invention discloses an oral ulcer patch which adheres to a surface of a mouth ulcer and reduces pain associated with the mouth ulcer while at the same time accelerating healing of the mouth mucosa. The oral ulcer patch comprises an anti-inflammatory agent, an analgesic agent; a healing agent; an agent that forms a protective barrier upon reacting5 with saliva in the mouth, wherein the patch adheres to the moist ulcer area inside the mouth, forms a protective barrier, releases active analgesic and anti-inflammatory agents, and wherein the application of the patch to the ulcer reduces the pain caused by the ulcer and reduces the healing time of the ulcer. 10 Abstract Present invention discloses an oral ulcer patch which adheres to a surface of a mouth ulcer and reduces pain associated with the mouth ulcer while at the same time accelerating healing of the mouth mucosa. The oral ulcer patch comprises an anti-inflammatory agent, 5 an analgesic agent; a healing agent; an agent that forms a protective barrier upon reacting with saliva in the mouth, wherein the patch adheres to the moist ulcer area inside the mouth, forms a protective barrier, releases active analgesic and anti-inflammatory agents, and wherein the application of the patch to the ulcer reduces the pain caused by the ulcer and reduces the healing time of the ulcer. 10 20 24 28 71 87 23 D ec 2 02 4 2 0 2 4 2 8 7 1 8 7 2 3 D e c 2 0 2 4 A b s t r a c t 5 1 0

The utility model relates to the technical field of vehicle-mounted electric connection, in particular to a double-end connection floating connector, which comprises a shell, a plug connector and a floating connector, the plug connector is arranged on the shell, and the floating connector is movably arranged on the plug connector; the plug connector comprises an electric terminal, a built-in colloid and a sealing element, and the sealing element is arranged in the built-in colloid to form a sealing structure; the floating connector comprises a floating terminal, an insulating sleeve and a floating sleeve; the floating sleeve moves in the shell; a plug connector and a floating connector are respectively arranged in a shell to form a double-end structure; the plugging connector ensures the reliability of current transmission, and the sealing element isolates the external environment to form a protective barrier, so that the waterproof and dustproof performance is enhanced; the floating terminal realizes electrical isolation through the insulating sleeve, allows floating adjustment within a certain range, and ensures smooth and stable connection. And high-precision and high-performance connection requirements are enhanced, the flexibility is high, and the practicability is high.

The invention discloses a freckle-removing and whitening mask which is prepared from the following raw materials: chrysanthemum, pearl, radix angelicae, almond, poria cocos, rhizoma atractylodis macrocephalae, peach kernel, ginseng, mung bean, bletilla striata, cortex moutan, rhodiola rosea, silkworm larva, Chinese yam, honeysuckle and the like. The facial mask is a pure traditional Chinese medicine facial mask, has remarkable curative effects on whitening, removing freckles, removing acnes and minimizing pores, and can effectively reduce facial skin damage, effectively inhibit growth of facial germs, promote vigor of subcutaneous capillaries of the damaged face, improve metabolism of the skin and enable the facial skin to reappear in a compact and refined state. In addition, the facial mask can enhance the ability of facial skin to resist invasion and stimulation of external germs, form a natural protective barrier for the facial skin, well repair, moisten and care the facial skin, and keep the facial skin comfortable, beautiful and healthy for a long time. Pure traditional Chinese medicine raw materials are selected, chemical components are not added, and harm to facial skin and the body is avoided.

The utility model discloses a portable hand fin relates to hand fin field, the utility model discloses a hand fin board, the surface of hand fin board is equipped with a plurality of mounting holes, the inside mounting of mounting hole has fastening rope or protection mechanism, the protection mechanism is used for protecting the first finger joint and the fingernail of user, the utility model discloses a protection mechanism, and the key position of hand fin and manicure contact or easy to produce the collision adds protection mechanism, adopts the rubber material of soft and wear -resisting to make, has improved the protection performance of hand fin to manicure significantly, and the softness of rubber material makes protection mechanism be able to closely adhere manicure edge, forms effective protection barrier, reduces the possibility that water flow directly impacts manicure, simultaneously, the wear resistance of rubber guarantees that protection mechanism is not easy to wear and tear in the long time use process, thereby avoids the erosion or damage of manicure in the swimming process, strengthens the use applicability of hand fin and the swimming experience of manicure lover.

A system and method for recovery of undamaged frangible aerial targets at shooting ranges includes a net positioned horizontally above ground level to cover a target fall zone. The net has mesh openings sized to retain undamaged frangible aerial targets while allowing damaged targets to pass through. The net forms a closed loop around parallel elongated front and rear rollers supported above ground by a plurality of fixed caster assemblies. A motor operatively coupled to at least one roller drives the net in a conveyor-like motion. Undamaged targets landing on the net are transported by the net to a collection area positioned adjacent to the front roller. The system may include friction strips on the rollers to enhance traction and a protective barrier shielding the collection area from stray shotgun pellets, thereby enabling recovery and reuse of targets that would otherwise break upon ground impact.

The utility model relates to the technical field of buttonholing machine, especially is buttonholing machine for clothing processing, including buttonholing machine main part, the side of buttonholing machine main part is established with the slide groove, the inside of slide groove is rotated and is connected with the lead screw through bearing, the outer surface screw thread connection of lead screw has the lifting plate, the utility model has the advantages that: the rotating stand on U -shaped support connects transparent plate, when pulling plate pulls toothed plate and overcomes the elastic force of spring and moves up, toothed plate and arc gear cover disengage meshing, and rotating stand can rotate around connecting rod, and transparent plate is rotated to needle head work area front and forms the protective barrier, after loosening pulling plate, spring pushes toothed plate and resets, and with arc gear cover meshing fixes the position of rotating stand and transparent plate. In this way, even if needle head breaks under the working condition such as puncturing thick material, transparent plate can effectively block the high-speed burst of broken needle head, avoid its to operating personnel cause harm, significantly improved the security in the use of buttonholing machine.

The invention discloses a solid particle of double-membrane nitric acid 2-(4-methylthiazol-5-yl) ethyl ester hydrochloride and a solid pharmaceutical preparation prepared from the solid particle. The solid particle is a drug-containing particle sequentially coated with an oily membrane and a high polymer material membrane. According to the invention, a double-membrane strategy is adopted, and the problems of content reduction and easy degradation caused by sublimation of a main drug are effectively solved through a membrane protection barrier formed by a fat-soluble material and a high polymer material.

The present application relates to the technical field of radiation protection barrier production, and particularly relates to a vehicle-mounted radiation protection barrier online evaluation method and system for physical examination, which obtains process parameter information of a workpiece to be evaluated, obtains specification parameters of the workpiece to be evaluated based on the process parameter information, constructs a simulated three-dimensional model diagram of the workpiece to be evaluated if the actual radiation attenuation rate value is not greater than the preset radiation attenuation rate threshold, and preforms a crack sample model diagram, obtains a screened three-dimensional model diagram based on the simulated three-dimensional model diagram and the crack sample model diagram, obtains crack characteristic information in the screened three-dimensional model diagram, evaluates the workpiece to be evaluated based on the crack characteristic information, and obtains a first evaluation result or a second evaluation result. The present application can obtain the best repair scheme of unqualified semi-finished lead plates, so as to repair the semi-finished lead plates and reduce the scrap cost.

The invention discloses a converter rear fire-blocking door device with a safety observation port, which comprises a fire-blocking door body, the fire-blocking door body is movably arranged between guide structures, the fire-blocking door body comprises a left fire-blocking door and a right fire-blocking door which are symmetrically arranged left and right, and a central observation port is formed at the joint of the left fire-blocking door and the right fire-blocking door. The guide structure comprises two sets of guide rails located at the upper end and the lower end of the fireproof door body and guide wheels connected with the fireproof door body, driving mechanisms are fixedly arranged on the left fireproof door and the right fireproof door, and the side portions of the left fireproof door and the right fireproof door and a converter form a concave protective fence structure. The upper right corner of the left fire door is cut off to form a first rectangular notch; the upper left corner of the right fire door is cut off to form a second rectangular notch, and the first rectangular notch and the second rectangular notch are combined to form a central observation opening.

This utility model discloses a centralized waste tire processing and crushing device, relating to the field of waste recycling. The device includes a crushing unit and a blocking unit. The crushing unit comprises a crushing box, crushing components, and a feed inlet, the feed inlet being located at the top of the crushing box. The blocking unit includes multiple fixing bars, each fixedly positioned at one of the four corners of the top of the feed inlet. Movable rods are mounted on the fixing bars, and multiple blocking nets are connected between the movable rods. This centralized waste tire processing and crushing device, with multiple blocking nets connected by the movable rods and fixing bars, forms an adjustable protective barrier outside the loading position of the loader, effectively intercepting tires ejected during feeding and fragments splashed during crushing. Simultaneously, the movable rods can slide up and down along the fixing bars, their positions fixed by a collar threaded connection to the movable rods, adapting to varying tire feeding conditions and on-site protection requirements.

This utility model discloses a comprehensive operating console for construction engineering management, belonging to the field of construction engineering management technology. It includes a mobile vehicle and a cable management rack. The mobile vehicle has a supporting platform, a protective barrier on its top surface, a control box at the top of the protective barrier, and a support frame at the front end of the protective barrier. The support frame is suitable for installing a control panel and a display screen, both of which are electrically connected to the equipment inside the control box. The cable management rack is located inside the protective barrier and includes a gantry frame and cable management structures respectively arranged on both sides of the gantry frame. The gantry frame is fixed to the bottom wall inside the protective barrier. Multiple sets of cable management structures are arranged on the same side, spaced vertically. These structures allow for convenient separation, winding, and storage of cables, facilitating the storage and transportation of the device. The mobile vehicle allows the operating console to be easily moved to a suitable working position, improving operational flexibility and convenience.

This invention relates to the field of lifting platform technology and discloses a lifting platform with a voice recognition system. The platform includes a vehicle base, an inner scissor-type hydraulic mechanism, a support base fixed to the upper end of the scissor-type hydraulic mechanism, and a protective barrier fixed to the outer side of the support base. A guide groove is formed inside the support base, and a through groove is formed at the lower end of the protective barrier corresponding to the guide groove. An L-shaped mounting frame is slidably connected between the guide groove and the through groove. A telescopic cylinder is installed inside the L-shaped mounting frame, and a mounting support is fixed to the telescopic end of the telescopic cylinder. A support shaft is fixed to the inner side of the mounting support, and an arc-shaped support block is rotatably connected to the outer side of the lower end of the support shaft. A hollow support arm is fixed to the outer side of the arc-shaped support block, and a microphone is installed at the end of the hollow support arm away from the arc-shaped support block. In this invention, the overall structure enables non-contact operation, improving operational convenience and efficiency, and allowing direct control of the lifting and moving of the support base via voice commands.

The invention belongs to the technical field of pharmaceutical preparations, and particularly relates to a composition for topical application containing sucralfate wet gel. The invention relates to a local application composition containing sucralfate wet gel, which is prepared from the following components in percentage by mass: 15 to 25 percent of sucralfate wet gel, 10 to 18 percent of polyethylene glycol, 0.2 to 0.5 percent of polyethylene glycol stearate, 0.1 to 0.21 percent of sodium methyl p-hydroxybenzoate, 0.01 to 0.023 percent of sodium propyl p-hydroxybenzoate and the balance of purified water. The sucralfate wet gel dressing is smeared on a non-infected and carefully disinfected skin wound surface and dried, a solid barrier is formed on the part, the wound surface can be covered, damaged tissues below the wound surface can be protected against external stimulation, and the sucralfate wet gel dressing is used for treating non-infectious wound surfaces and ulcers, especially vascular ulcers, diabetic ulcers, bedsores and radiodermatitis, and has a good application prospect. A layer of protective barrier is formed on the broken or damaged surface, so that physiological healing is promoted.

This invention belongs to the field of protective coating technology, specifically relating to a protective coating for transportation vehicles resistant to phosphate ester hydraulic oil and its preparation method. The protective coating comprises component A and component B. Component A includes a polyurea-modified polyester resin, a surface tension modifier, a defoamer, and a mixed solvent. Component B includes an isocyanate prepolymer and xylene. The polyurea-modified polyester resin is prepared from polyether polyol, polyisocyanate, polyaspartic acid ester, polyol, catalyst, and xylene through a specific synthesis process. This protective coating can withstand the corrosion of phosphate ester hydraulic oil, providing a durable protective barrier. It solves the problem of softening and peeling of the protective coating due to leakage and diffusion caused by phosphate ester hydraulic oil spills after a period of use in transportation vehicles.

The invention relates to the technical field of cement pressure testing, and discloses cement sample pressure testing equipment which comprises a machine body, a hydraulic cylinder is arranged in the machine body, a pressing plate is fixedly connected to the output end of the hydraulic cylinder, a sensor is arranged above the pressing plate, a placing table is arranged in the machine body, and a fixing block is fixedly connected to the outer wall of the machine body. A sliding rod is fixedly connected to the inner wall of the fixing block, a protection assembly is arranged on the outer wall of the machine body and comprises a baffle and a first air cylinder, the baffle is arranged on the outer wall of the machine body, the output end of the first air cylinder is fixedly connected to the outer wall of the baffle, and the first air cylinder is arranged on the outer wall of the machine body. In the cement sample pressure testing process, the baffle driven by the first air cylinder is matched with the sliding rod stabilized by the fixing block, the baffle can accurately ascend and descend before testing so that a sample can be conveniently placed, rapid resetting can be achieved during testing to form a protective barrier, and high-speed splashing fragments generated by sample breaking are effectively blocked.