58results about How to "Reduce absorption" patented technology

This invention relates to the field of nutritional food technology, specifically to a fat-reducing composition for regulating the gut and its preparation method. The fat-reducing composition for regulating the gut comprises the following components by weight percentage: 20-25% solid coconut diglyceride microcrystalline powder, 15-20% fermented gel freeze-dried powder, 3-5% citrus pectin, 8-12% psyllium husk powder, 10-15% defatted coconut powder, 5-8% resistant dextrin, 8-10% pea protein powder, 3-5% freeze-dried mango powder, 4-7% erythritol, 1-2% microcrystalline cellulose, and 0.5-1% citric acid powder. This invention effectively solves the core problems of traditional fat-reducing products—poor ingredient stability, low bioavailability, and limited efficacy—through the dual progressive effects of physical structure and biological fermentation. It systematically achieves a synergistic effect of delaying fat digestion and absorption, long-lasting satiety enhancement, and precise regulation of gut microbiota health, completing a systematic engineering leap from single-component stimulation to simulating human metabolic pathways. This provides a stable, efficient, and safe complete solution for fat-reducing functional foods that regulate the gut.

The utility model relates to the technical field of retroreflective sheeting provides an environmental protection type hard PVC retroreflective sheet, solves the problem that the reflectivity of existing retroreflective sheet is low, and the optical performance is relatively weak, and the surface layer anti -peeling impact force is not good, including the retroreflective sheet body, the retroreflective sheet body includes the protective surface layer, prism air microcapsule layer, degradable back film layer from top to bottom sequentially laminated, the prism air microcapsule layer includes wall material and core material, the core material includes prism reflection matrix layer and air layer, the protective surface layer is by PVC material layer and acrylic material layer composite, the prism reflection matrix layer is by several microangle pyramid prism structure unit close arrangement, the microangle pyramid prism structure unit is cutting obtains to cubic angle pyramid prism.

The application discloses a kind of image sensor preparation method and image sensor, belong to semiconductor technical field.The application is formed P-type heavily doped region below floating diffusion portion, make the depletion region of P-type heavily doped region and N-type lightly doped region below floating diffusion portion from the original four square trapezoidal curve as half moon type, make the area of this depletion region fall in shallow trench isolation structure smaller, achieve the purpose of reducing dark current.At the same time, by etching and low-temperature epitaxial growth process, the diffusion of P-type heavily doped region is limited, so that the P-type heavily doped region is limited in the area away from the shallow trench isolation structure, and the lateral area of P-type heavily doped region is smaller than N-type lightly doped region.Because the electric field of P-type heavily doped region in vertical direction is much stronger than the electric field in horizontal direction, so as to reduce the electric field intensity in horizontal direction close to the shallow trench isolation structure, so that the defects capable of playing the role of recombination center can absorb relatively less electrons or holes than the original structure, thereby achieving the effect of reducing dark current.

The invention discloses a building roof heat preservation and insulation system and a construction method thereof, and belongs to the technical field of roof heat preservation and insulation, the building roof heat preservation and insulation system comprises a plurality of extruded polystyrene boards laid on a roof, an aluminum foil reflecting film is laid on the surface of each extruded polystyrene board, and the surface of each aluminum foil reflecting film is coated with polymer cement mortar. The roof is provided with a fixing assembly used for fixing the extruded polystyrene board to the roof. The method has the effect of improving the heat preservation and insulation effect of the roof.

According to the energy-saving system of the coal-fired boiler, when the boiler operates at a low load, part of steam generated during operation of the boiler is used for heating secondary air by arranging the secondary air heater, so that combustion of fuel in a hearth is stabilized, meanwhile, the temperature of flue gas at an outlet of the economizer is increased, and energy is saved. The inlet flue gas temperature of the SCR denitration device can meet the requirement of low-load commissioning; meanwhile, the steam pressure reducer and the sludge drying device are arranged, part of steam generated during operation of the boiler is extracted to be subjected to pressure reduction through the steam pressure reducer to be used for drying the sludge, the dried sludge is input into the boiler to be mixed with pulverized coal for combustion, and the coal combustion cost is saved. According to the device, through cooperative use of the equipment, secondary air can be heated when the boiler is in low load, and the combustion stability of the boiler is improved; and sludge can be blended and burnt under high load, so that the fuel cost is reduced.

This invention belongs to the field of back-contact battery technology, specifically relating to a back-contact battery and its battery assembly with a specific front-side structure. This specific front-side structure includes a tunneling oxide layer and a specifically doped amorphous silicon layer sequentially disposed on the front side of a silicon substrate. Within the specifically doped amorphous silicon layer, a low-doped amorphous silicon layer, a high-doped amorphous silicon layer, and an oxygen-doped amorphous silicon layer are sequentially disposed along the direction away from the tunneling oxide layer. The specifically doped amorphous silicon layer is doped with phosphorus (P) and contains hydrogen (H). The P doping concentration C1 in the low-doped amorphous silicon layer and the P doping concentration C3 in the oxygen-doped amorphous silicon layer are both lower than the P doping concentration C2 in the high-doped amorphous silicon layer. This specific front-side structure enables the back-contact battery to achieve an absorption rate exceeding 85% for incident light within 400 nm. The back-contact battery of this invention maintains good performance even after long-term exposure to ultraviolet light, improving the battery's UV reliability while achieving high transmittance and high battery efficiency.

This invention relates to the field of LED technology, and particularly to a high-efficiency violet LED epitaxial structure and its growth method. The epitaxial structure, from bottom to top, includes: a patterned AlGaN template substrate and a GaN-based epitaxial layer. The patterned AlGaN template substrate sequentially includes a growth substrate, a buffer layer, an AlGaN layer, and a mask layer, wherein the mask layer is a periodically patterned mask. The GaN-based epitaxial layer sequentially includes: an AlGaN capping layer, an n-type semiconductor layer, a stress relief layer, a multi-quantum-well active region, an electron blocking layer, and a p-type semiconductor layer. The n-type semiconductor includes an Alx3Ga1-x3N layer with an Al composition of 0.01 ≤ x3 ≤ 0.05 and x3 ≥ x2. This invention effectively blocks dislocation propagation and reduces defect density through the synergistic design of the patterned AlGaN template substrate and the laterally epitaxially grown AlGaN capping layer; and achieves progressive stress relief and light absorption suppression through the gradient increase of Al composition in each layer of the all-AlGaN-based structure.

The utility model provides an SW large-module water tank with a heat preservation layer, which relates to the technical field of water tanks and comprises an SW large-module water tank component, a heat preservation component is arranged on the outer side of the SW large-module water tank component, a circulating component is arranged at the top of the SW large-module water tank component, a buffer component is arranged on the heat preservation component, and the buffer component is arranged on the outer side of the SW large-module water tank component. The SW large module water tank assembly comprises a water tank. The heat preservation layer is arranged on the outer side of the water tank, the heat preservation effect is provided for the water tank, heat exchange between water in the water tank and the external environment is effectively prevented, heat dissipation or absorption is reduced, the heat preservation shell is arranged on the outer side of the heat preservation layer, the heat preservation cotton is arranged in the heat preservation shell, and an additional heat insulation barrier is formed. The SW large-module water tank assembly further reduces the heat transfer rate, improves the heat preservation effect by arranging multiple heat insulation structures, further avoids energy waste and facilitates normal use of a user.

This invention discloses an end-face coated crystal optical element for a laser resonator and its fabrication method, belonging to the field of optical element fabrication. It includes an optical crystal, a high-reflectivity film disposed on one end face of the optical crystal, and a partially transmissive film disposed on the other end face. The high-reflectivity film sequentially includes Y-coatings along the end face of the optical crystal outwards. b F3 First Floor, H f O2 first layer, Y b F3 Second Layer, H f O2 second layer...Y b F3, Q layer, H f O2, Q layer. This invention utilizes Y... b 3+ Sensitization improves pump absorption efficiency and through Y b To E r Energy transfer effectively alleviates high-doped E r The self-termination effect in YAG lasers enables high efficiency and high energy output of 2940nm lasers, making them suitable for fields such as medical aesthetics and precision machining.

The invention provides a natural gas desulfurization compound solvent as well as a preparation method and application thereof. The natural gas desulfurization compound solvent is prepared from the following components in parts by weight: 10 to 30 parts of diisohexyltertiary amine, 2 to 10 parts of sulfolane, 15 to 25 parts of N-methyldiethanolamine, 8 to 15 parts of nitrogen-containing heterocyclic compound and the balance of deionized water, and the nitrogen-containing heterocyclic compound comprises N-hydroxyethyl piperazine and / or N-hydroxypropyl piperazine. The bis-iso-hexyl tertiary amine, the N-methyldiethanolamine and the nitrogen-containing heterocyclic compound cooperate to reduce the absorption of carbon dioxide by improving the selectivity of organic sulfur, so that the removal efficiency of the organic sulfur in the natural gas is improved, and finally the purpose of improving the quality of the acid gas is achieved.

This application relates to the field of coating technology, specifically disclosing a heat-insulating, flame-retardant, and anti-corrosion coating and its preparation method. A heat-insulating, flame-retardant, and anti-corrosion coating comprises the following raw materials in parts by weight: 50-80 parts of silicone-acrylic emulsion, 10-15 parts of epoxy resin, 30-40 parts of heat-insulating microcapsules, 15-21 parts of hollow glass microspheres, 3-5 parts of dispersant, 0.5-2 parts of polypropylene glycol diglycidyl ether, 1-5 parts of leveling agent, and 15-20 parts of water. The heat-insulating microcapsules comprise an aluminum powder core and a heat-insulating and flame-retardant capsule wall layer, the capsule wall layer material comprising acrylic resin and polyamide resin. The preparation method is as follows: hollow glass microspheres and heat-insulating microcapsules are added to silicone-acrylic emulsion and water and dispersed evenly to obtain a mixture; the dispersant, polypropylene glycol diglycidyl ether, epoxy resin, and leveling agent are added to the above mixture and mixed evenly to obtain the interior wall insulation coating. The composition of this application achieves a comprehensive improvement in heat insulation, flame retardancy, and anti-corrosion performance.

The application discloses a dislocation tooth storage and treatment box and a storage and treatment method. The box comprises a box body and a box cover. One side of the box cover is hinged to the box body, and the other side of the box cover is detachably connected to the box body. The box body is internally provided with a cleaning groove, a liquid storage groove, a tooth storage groove and a storage groove. The cleaning groove and the tooth storage groove penetrate through the bottom of the box body, and a sealing plug is detachably connected to the bottom of the box body. The cleaning groove, the liquid storage groove and the tooth storage groove are respectively detachably connected with a cleaning groove cover, a liquid storage groove cover and a tooth storage groove cover, which are fixedly connected to the box cover. A pair of tweezers is detachably connected to the storage groove. The scheme uses physiological saline to flush dirt on the dislocation tooth, uses HBSS to maintain and recombine cell components consumed by periodontal membrane cells, provides a good storage environment, uses HBSS containing ALN to treat the dislocation tooth to reduce root absorption after replantation, avoid bone adhesion and improve the replanting success rate.

The application discloses a flue gas analyzer with a flue gas pretreatment structure, and aims to provide a flue gas analyzer with compact structure and reduced absorption effect of condensed water on flue gas. The application comprises a host, wherein a flue gas pretreatment structure is arranged in the host, the flue gas pretreatment structure comprises a gas-liquid separation module, a desiccant module and a heat dissipation module which are connected in sequence, the gas-liquid separation module comprises a gas chamber shell, a cavity is arranged in the gas chamber shell, an air inlet nozzle, an air outlet nozzle and a water outlet nozzle which are in communication with the cavity are arranged on the gas chamber shell, the desiccant module comprises a temperature control module, a frost film and a temperature detector, the temperature control module is arranged on the inner side of the heat dissipation module, and the frost film and the temperature detector are both arranged on a temperature control surface of the temperature control module. The application is applied to the technical field of flue gas analyzers.

The utility model discloses a dust removal device for a construction site, and relates to the technical field of dust removal, in particular to the dust removal device for the construction site, which comprises a bottom plate, universal wheels are arranged below the bottom plate, a water tank is fixedly connected above the bottom plate, and a water replenishing opening is formed in the upper surface of the water tank. A support is fixedly connected to one side of the upper portion of the water tank. According to the dust removal device for the construction site, the flow baffle and the baffle are arranged in a matched mode, in the using process, through the inclined plane design of the back side of the flow baffle, when a rotary spray head discharges water, the flow baffle can be pushed out towards the two sides, at the moment, a water column is sprayed out, and when the flow baffle falls down due to gravity, the water column can be disconnected; water mist is formed after a water column impacts the baffle, and when the water column is disconnected, the situation that the water mist is absorbed when the water column is continuously sprayed out can be effectively reduced, so that the effect of improving the generation efficiency of the water mist is achieved, and the purpose of improving the working efficiency of dust removal is achieved.

The invention provides a coal-fired boiler ammonia-doped combustion compatible matching system based on radiation characteristic compensation, which relates to the technical field of boiler combustion and comprises an ammonia-doped combustion operation characteristic database construction module, a real-time operation optimization module and a performance evaluation and self-optimization module. According to the method, the ammonia-doped combustion operation characteristic database is constructed, then whether the boiler performance parameters are recorded or not is judged based on the key boiler parameters, and ammonia-doped strategy dynamic adjustment and wall temperature safety regulation and control are carried out based on the ammonia-doped combustion operation characteristic database and the boiler performance parameters. Finally, when the fuel enters the coal-fired boiler, the mixing condition of ammonia and coal is evaluated, whether the fuel mixing strategy is optimized or not is judged, meanwhile, the oxygen content condition of the coal-fired boiler is monitored and adjusted, the position of high-temperature flames in the boiler is adjusted and controlled through flexible grading of the ammonia / coal fuel, matching of heat transfer distribution in the boiler and the coal-fired working condition is achieved, and the coal-fired boiler is obtained. The ammonia-doped combustion compatibility matching effectiveness of the coal-fired boiler is improved, and the problem that the ammonia-doped combustion compatibility matching effectiveness of the coal-fired boiler is low is solved.

The utility model relates to a sun-proof quick-dry cool-feeling yarn which is of a bi-component skin-core structure, the bi-component skin-core structure comprises a core layer and a skin layer, the core layer is made of PA materials and has high specific heat capacity, so that the specific heat capacity of the yarn is greatly improved, and the PA materials have soft performance, so that the yarn has good softness while keeping cool feeling; the skin layer is made of a PET (Polyethylene Terephthalate) material, has excellent quick-drying performance and can quickly disperse moisture, so that the skin sticking phenomenon caused by sweating is avoided; the heat-conducting particles are added into the skin layer, so that the heat-conducting property of the skin layer is improved, the heat-conducting property of the yarn is remarkably enhanced, and the yarn has a more lasting and cool touch feeling by combining the heat-conducting particles with the PA with high specific heat capacity of the core layer; the nano-scale heat-conducting particles uniformly dispersed in the skin layer can reflect sunlight, reduce the absorption of sunlight heat energy by the yarn, improve the sun-screening performance of the fabric, play the antibacterial role of the nano-material, and solve the problems that a traditional after-finishing sun-screening agent is easy to fall off and the antibacterial effect is invalid.

The invention relates to opaque quartz glass with high absorption in the near-infrared range and a production method thereof. The invention also relates to the use of the opaque quartz glass according to the invention or of the opaque quartz glass obtained from the method according to the invention in a processing chamber in which semiconductor wafers are processed.

The invention relates to the technical field of health-care products, and aims to provide a lipid-lowering and weight-losing composition which comprises the following components in parts by mass: 10-15 parts of chitosan, 20-35 parts of a tea bean extract, 5-10 parts of a pawpaw extract, 2-8 parts of a Chinese wolfberry extract, 2-10 parts of an immature bitter orange extract, 5-10 parts of a nomame senna extract, 2-6 parts of composite biomass and 5-10 parts of dietary fibers. By reasonably selecting various components with different fat-reducing and weight-losing mechanisms, controlling the dosage of the components and scientifically matching the components, the obtained composition has the advantages of good effect and quick response, and does not generate dependence.

This invention relates to the field of genetic engineering technology, and provides a ZmMTⅠ‑3 The application of genes in reducing cadmium accumulation in maize, the ZmMTⅠ‑3 The CDS sequence of the gene is shown in SEQ ID NO.1. This invention also provides a method for reducing cadmium accumulation in maize and its application in cultivating low-cadmium-accumulation maize plants. Furthermore, this invention provides a low-cadmium-accumulation maize plant obtained using the above method. This invention clarifies for the first time... ZmMTⅠ‑3 The gene plays a role in regulating cadmium accumulation in maize, and knocking out this gene can significantly reduce the absorption and accumulation of cadmium in maize plants. This provides a novel gene target and molecular breeding approach for the cultivation of low-cadmium-accumulation maize materials, effectively making up for the lack of existing core gene resources for low-cadmium regulation in maize. It is suitable for the safe production of maize in cadmium-contaminated farmland and has important application value.

The present application belongs to the technical field of solar cells, and relates to a heterojunction solar cell, which comprises, from a light-facing side to a back light-facing side, a first electrode, a first conductive film layer, an N-type semiconductor film layer, an intrinsic film layer, a semiconductor substrate, a tunneling oxide layer, a P-type carbon-doped semiconductor film layer, a high-concentration P-type doped semiconductor film layer, a second conductive film layer, and a second electrode; the first conductive film layer fully covers the N-type semiconductor film layer, and the first electrode is electrically connected to the N-type semiconductor film layer through the first conductive film layer; the second conductive film layer fully covers the high-concentration P-type doped semiconductor film layer, and the second electrode is electrically connected to the high-concentration P-type doped semiconductor film layer through the second conductive film layer. The present application aims to provide a heterojunction solar cell, which can improve the electrical power loss caused by the carrier transmission on the back of the cell and improve the cell efficiency.

The utility model relates to an ore detecting and screening device, and relates to the field of ore detecting and screening. The screening device comprises a screening device body, one end of the upper portion of the screening device body fixedly communicates with a feeding port, a sliding door is arranged below one side of the screening device body, the two ends of the lower portion of the screening device body are symmetrically and fixedly connected with damping assemblies, a dust collection assembly is arranged on one side of the feeding port, and the damping assemblies are arranged below supporting legs. Through the arrangement of the dust collection assembly, the effect of conveniently collecting dust flying out of the feeding opening during screening is achieved, through the installation assembly, the dust collection assembly and the device are conveniently assembled, through a rubber damping pad, vibration borne by the dust collector can be absorbed and relieved, and through the arrangement of the damping assembly, the vibration of the dust collector is reduced. The effect of conveniently absorbing and slowing down vibration generated when the device works is achieved, the anti-skid effect is conveniently achieved through a rubber anti-skid pad, and the use practicability is improved.

A method for preparing white stable lignin and its application are disclosed. This invention addresses the limitations of existing lignin decolorization processes, which are constrained by long decolorization times and difficulty in maintaining color stability under ultraviolet light stimulation after decolorization, thus failing to meet the low absorption requirements of radiative cooling materials in the visible light band. The method includes: 1. Preparation of DES; 2. Preparation of lignin solution; 3. Modification of lignin; 4. Bleaching; 5. Preparation of white stable lignin. Application: It is used in the preparation of refrigeration materials.

This application discloses a soluble microneedle composition of a GLP-1R agonist and its preparation method, belonging to the field of biomedical technology. It includes a needle body material and a base material. The needle body material contains a small molecule GLP-1R agonist, a penetration enhancer, and a soluble polymeric backbone material, and may further include pH adjusters, humectants, and stabilizers. The base material is composed of polylactic acid, polylactic acid-glycolic acid copolymer, cross-linked polyhyaluronic acid, cross-linked gelatin, polyvinyl alcohol, polyvinylpyrrolidone, polyvinylpyrrolidone-vinyl acetate copolymer, N-(2-hydroxypropyl)methacrylamide polymer, or combinations thereof. Through injection, centrifugation, and drying, an integrated microneedle structure with mechanical strength and rapid dissolution is formed. It can pierce the stratum corneum of the skin to form microchannels and rapidly dissolve and release oxaliplatin subcutaneously, achieving transdermal delivery, effectively reducing gastrointestinal exposure and first-pass metabolism, and improving drug utilization and medication adherence.

The invention discloses a substrate structure and a substrate surface treatment method and device.The method comprises the steps that a transparent inorganic substrate is provided, and the roughness Ra of the to-be-treated surface of the substrate ranges from 0.1 micrometer to 20 micrometers; an energy absorption layer is at least formed on the to-be-treated surface of the substrate, the energy absorption layer completely covers the micro protrusions and the micro pits on the to-be-treated surface of the substrate, and the energy absorption coefficient of the energy absorption layer is larger than that of the substrate; ultra-short pulse laser is adopted to irradiate the substrate, so that phase explosion happens to the energy absorption layer, multi-photon absorption happens to the micro-protrusion area, and under the action of phase explosion and multi-photon absorption, the laser conducts cold cutting on the micro-protrusions; wherein the wavelength lambda of the ultrashort pulse laser ranges from n * Ra / 10 to n * Ra, and n is the refractive index of the substrate. According to the method, under the combined action of phase explosion and multi-photon absorption, the micro-protrusions are subjected to cold cutting through laser, so that the micro-protrusions on the surface to be treated are stripped, and the substrate structure is not damaged.

The application relates to the technical field of optical films, in particular to a wavelength 190-230 nm metal dielectric enhanced reflection film and a preparation method thereof. The metal dielectric enhanced reflection film comprises a substrate, a main reflection layer and a plurality of dielectric enhancement layers. The main reflection layer is an Al layer. The dielectric enhancement layers are alternately stacked by MgF2 layers and Al2O3 layers. The number of dielectric enhancement layers is not more than 3. The physical thickness of the Al layer is 180+ / -2% nm. The physical thickness of the MgF2 layer is 26.43+ / -2% nm. The physical thickness of the Al2O3 layer is 36.65+ / -2% nm. In the MgF2 layer, the evaporation rate of MgF2 is 0.8+ / -0.1 nm / s. In the Al2O3 layer, the evaporation rate of Al2O3 is 0.5+ / -0.05 nm / s. The metal dielectric enhanced reflection film has stable high reflectivity in the 190-230 nm wavelength band, high compactness and firmness between the film layers, and good durability.

The utility model provides an LED packaging structure and a lamp bead, the LED packaging structure comprises a bowl cup support, the bowl cup support is internally provided with a light-emitting chip, a reflection part and at least two fluorescent layers, the light-emitting chip is located on the bottom wall of the bowl cup support, the at least two fluorescent layers sequentially cover the side, away from the bowl cup support, of the light-emitting chip, and the reflection part is located on the bottom wall of the bowl cup support. The excitation wavelengths are sequentially decreased along the direction far away from the light-emitting chip; the reflecting part is at least arranged on the inner side wall of the bowl-cup support, and the reflectivity of the reflecting part is larger than that of the bowl-cup support. Therefore, through the high reflectivity of the reflecting part, the light absorption of the bowl cup support can be reduced, the light emitting loss is reduced, the lighting effect is further improved, and the lighting effect of the LED product can be further improved through the sequential excitation of the plurality of fluorescent layers.

The application provides an orthodontic traction device and belongs to the field of oral orthodontic instruments. The device solves the problem of poor cross-segment stability and unreasonable orthodontic stress of the existing orthodontic traction device. The device comprises sliding support parts which are connected to one side end face of a connecting support assembly and are used for cross-segment sliding connection on a straight wire arch in cooperation with the connecting support assembly to lock the straight wire arch under preset conditions. A multi-curve traction hook is connected to the side end face of the connecting support assembly away from the sliding support parts and is used for connecting a traction member. The device is mainly used for tooth orthodontic traction.

This application relates to the field of filtration devices, specifically disclosing an improved oil removal device for electroplating wastewater. The device includes a housing with a suction pipe connected to it. A float is mounted at one end of the suction pipe, and a fixed pipe is mounted on the float, connected to the suction pipe. Three rotating plates are evenly spaced and rotatably arranged along the circumference of the fixed pipe, with the rotation axis of the rotating plates parallel to the height of the fixed pipe. A supporting float is located at the end of the rotating plate away from the fixed pipe. Three adjusting floats are evenly spaced along the circumference of the fixed pipe, corresponding one-to-one with the three supporting floats. The float is equipped with a rotating assembly for driving the supporting floats and a balancing assembly for inflating / deflating the adjusting floats. A driving component for moving the float is also provided on the float. This application effectively removes floating oil stains located in corners and edges, improving oil removal efficiency.

The invention relates to the technical field of bearing testing, in particular to a transmission shaft testing system and method. The transmission shaft test system comprises an extrusion assembly, a test assembly and a positioning assembly. The extrusion assembly comprises a driving unit and an extrusion module; the extrusion module comprises a first extrusion part, a second extrusion part and a connecting part. The test assembly comprises a tube unit and a sheet unit; the pipe unit comprises a pipe body and an avoiding module; the avoiding module penetrates through the side wall of the pipe body; each sheet unit comprises an arc sheet body, a first bulge and a second bulge; and the arc sheet body is welded and fixed with the pipe body through the first bulge and the second bulge. The test state of the transmission shaft test system comprises that the driving unit drives the extrusion module to pass through the avoiding module to apply a load to the arc sheet body until the arc sheet body is separated from the pipe body. Therefore, the problem that the test result of the firmness of the balance sheet is inaccurate is solved.

The application discloses a production and preparation process of a heavy-duty water-based epoxy primer suitable for a high-salt and high-humidity environment, and relates to the technical field of water-based epoxy primer production. The raw materials are as follows: 30-50 parts of bisphenol A type water-based epoxy resin emulsion, 10-20 parts of a curing agent T-31, 3.5-5 parts of a reinforced anti-settling agent, 8-12 parts of zinc phosphate, 5-8 parts of aluminum tripolyphosphate, 10-15 parts of precipitated barium sulfate, 3-6 parts of silicon powder, 0.8-1.2 parts of a polyacrylic acid sodium salt dispersing agent, 0.4-0.8 parts of an organic silicon defoaming agent, 0.3-0.7 parts of an acrylic ester leveling agent and 0.6-1 part of a polyurethane thickening agent. The bentonite in the reinforced anti-settling agent and the modified phosphosilicate zirconium powder can improve the microstructure of the primer system, the coating is more compact, the primer can be conveniently applied to a high-salt and high-humidity environment, and the salt mist resistance of the water-based epoxy primer is enhanced.