3545 results about "Organic glass" patented technology

The invention provides a transparent thermal insulation anti-ultraviolet coating and a preparation method thereof, belongs to the technical field chemical industry, materials and environmental protection and relates to the transparent thermal insulation anti-ultraviolet coating which can reduce the transmission of solar energy and ultraviolet and the preparation method thereof. The coating comprises nano-slurry with the thermal insulation anti-ultraviolet function and a film-forming substance, and is combined with the synergistic effects of a wetting dispersant and a hyper-dispersant for preparing the nano-slurry with high solid content and stable dispersion. The preparation process of the coating is simple and can greatly improve the solid content of the coating, ensure the optical effect of a paint film after coating, simultaneously organically combined powder with different functions and obtain the thermal insulation anti-ultraviolet functional coating with satisfactory effects. The coating has the characteristics of low transmission of ultraviolet and near infrared light of solar rays, high transmission of visible light and the like, and can be coated on glass, polycarbonate or organic glass and other transparent materials, and achieve the purposes of energy conservation and protection.

The invention relates to a testing device and method for simulating pavement of propping agents in a complex manual crack. The testing device is composed of a fracturing fluid preparing tank, a fluid injection pump, a simulation shaft, a plurality of adjustment valves, a flow meter, a pressure meter and the complex manual crack. The manual crack is composed of a primary crack body and a plurality of secondary crack bodies on the periphery of the primary crack body. Different crack states can be simulated. The manual crack is made of transparent organic glass, and the width and the complex degree can be manually arranged. By means of the testing device and method, the flow conditions of sand carrying fluid in the complex manual crack and the pavement conditions of the popping agents under the conditions of different crack widths, different sand carrying fluid sand proportions, different fracturing fluid leak-off rates, different crack complex degrees and the like can be simulated, and the visualization of migration and sedimentation of the propping agents in the complex manual crack can be achieved in the test process.

The invention relates to a transparent heat insulation coating material, the preparation method and the application thereof. The material is made from the raw material of lanthanum hexaboride / tin indium oxide or lanthanum hexaboride / tin antimony oxide, by the steps of pretreating by ultrasonic dispersion, and grinding to prepare nanometer slurry with heat insulation function, wherein the nanometer slurry has particle sizes mainly between 10nm and 200nm, the average particle size between 50nm and 120nm, and superior dispersion stability; mixing the nanometer slurry with film forming substance, auxiliary agent and solvent, to obtain the transparent heat insulation coating material. The coating material can obstruct more than 80% of infrared light, has a visible light transmittance above 60%, achieves excellent transparency and sunshine energy shielding effect; can be directly coated on transparent glass, polycarbonate, synthetic glass and polyester; and achieves the aims of energy conservation and heat insulation.

The invention relates to a testing system for deep soil freezing / thawing process, which is structurally characterized in that a temperature-controlled box is connected with an external cold bath; a high pressure-resistant organic glass cylinder is arranged on a temperature-controllable steel base; two small holes are formed in the base, one is connected with a water guide pipe, and the other is connected with a pressure adjusting pipe; a permeable stone, a piece of filter paper and a sample are sequentially arranged at the upper part of the lower base, and a temperature sensor is mounted in the sample; a temperature-controllable upper press head is arranged at the upper part of the sample; a line leading-out hole is formed in the upper press head, and is sealed through sealant after the line is lead out; the upper press head is connected with the transmission rod of a testing machine; a measuring cylinder is connected with the sample through the water guide pipe; and the measuring cylinder is arranged on a weighing sensor and fixed through a bracket. By adopting the testing system, the freezing / thawing process of the deep soil can be rather systematically researched, so as to obtain the frost heaving rate and the water absorbing / draining rate of the deep soil which is in different depths frozen under the different temperature gradients. The testing system provides the technical guarantee for the research in clarifying the action of the external load on the forming processes of the freezing soil and the frozen soil cold-formed structures, and the mutual action of the temperature, the moisture content and the pressure of the soil body in the process of freezing under the high-pressure action.

The invention discloses a manufacturing process for a fully-laminated curved touch display screen. The manufacturing process comprises the following steps: pre-laminating a touch thin film, organic glass and ultrathin glass by adopting a solid ultraviolet flexible adhesive, performing one-sided heating on the pre-laminated components to thermally bend the pre-laminated components into a required curved shape on a thermal bending device, laminating the thermally-bent pre-laminated components and a bent OLED (Organic Light-Emitting Diode) display to form an integrated pre-laminated screen by virtue of the solid ultraviolet flexible adhesive, and performing deaeration, curing and edge sealing. The process is simple and high in yield and finished product stability, the production efficiency is greatly improved, and the service life of a product is prolonged.

The invention provides a device for preparing a light-weight remoulded soil sample in the technical field of civil engineering. The device comprises a main bracket structure and a loading system structure, wherein the main bracket structure is placed on a horizontal plane; the loading system structure is arranged inside the main bracket structure; the main bracket structure comprises an upper board, a lower board, a screw and nut component, a sample preparation barrel, a water-permeable stone and a groove-encircling board; and the loading system structure comprises a loading board, a bearing board, a pressurizing rod, a buckling board and an anti-inclination board. By the device, slush prepared from remoulded soil is poured into a device made of organic glass, and a static load is applied to the top to cure he soil sample so as to obtain a saturated remoulded soil test sample with uniform water content.

The invention relates to a multifunctional model test system for tunnel and underground engineering. The test system comprises a rail, a model box, a servo-controlled test loading device, a rotating seat, rotating shafts and a bracket, wherein the rail is arranged on the upper part of the test system; the model box is arranged on the middle part of the test system and comprises an outer frame, an inner frame and an organic glass plate; the servo-controlled test loading device comprises a horizontal loading jack and a vertical loading jack; the rotating shafts are arranged on the two sides of the middle part of the test system; and the rotating seat is arranged on the back surface of the upper part of the test system and is connected with the bracket through a rotating loading cylinder. The system can perform a model test on a block system, rock tunnel excavation, a tunnel chamber, a tunnel group, a side slope, shield excavation and building traversing, has a facade rotating loading function, effectively solves the technical problem that a strain field is required to have a wide uniformity range and a high uniformity degree in the model test, and can well simulate the stress environment of tunnels existing in a rock-soil body.

The invention discloses a multichannel gas spark switch applying a plasma synthesis jet trigger technology. The multichannel gas spark switch is characterized in that the spark gap of an air switch is divided by a middle trigger electrode into two equal parts; the trigger electrode is composed of three portions, i.e., an upper electrode disc, a lower electrode disc and an insulation ring; more than one excitation cavities and jet orifices are embedded into the insulation ring for generating at one side of the trigger electrode multichannel plasma injection; and the surface of an electrode portion at the other side is provided with an annular metal protrusion for forming multichannel discharge in the relative spark gap. A switch housing is made of organic glass or other insulation materials, so that when a trigger pulse reaches the trigger electrode, a higher field distortion coefficient is formed at the side of the annular electrode portion, and at the same time the multichannel plasma injection is formed at the other side, thus the spark inductance of the air switch is reduced, the electrode ablation is minimized, and the service life of the switch is prolonged.

PCT No. PCT / FR95 / 00812 Sec. 371 Date May 7, 1997 Sec. 102(e) Date May 7, 1997 PCT Filed Jun. 20, 1995 PCT Pub. No. WO96 / 00403 PCT Pub. Date Jan. 4, 1996An ophthalmic lens consisting of a substrate made of organic glass, of an abrasion-resistant coating, of a layer of impact-resistant primer and of an inorganic antireflective coating, wherein the surface of the said substrate is covered with the abrasion-resistant coating and in that the impact-resistant primer layer is inserted between the said abrasion-resistant layer and the anti-reflective coating, wherein the abrasion-resistant coating comprises a hydrolyzate or a mixture of hydrolyzates of a silane compound of formula: in which: R1 denotes an organic group containing an epoxy group; R2 is a hydrocarbon radical which has 1 or 2 carbon atoms; and R3 is a hydrocarbon group which has from 1 to 4 carbon atoms, and a is 0 or 1 in value.

The invention discloses a testing device for an oiled paper compound insulation frequency domain dielectric spectrum and conductivity test. The testing device comprises a high temperature resistance organic glass tank, an upper stainless steel sealing cover plate, a lower stainless steel sealing cover plate, electrode systems, an electric heating blanket, a temperature sensor, a temperature display and control device and the like. The upper end and the lower end of the tank are sealed with the stainless steel sealing cover plates, the tank is filled with transformer oil, the temperature sensor is arranged at the bottom of the tank, the temperature sensor is connected with the temperature display and control device, an air valve and an air pressure gauge are arranged on the upper cover plate of the tank, an oil valve is arranged on the lower cover plate, the electrode systems are arranged at the bottom of the tank, an insulation paper board is arranged between the upper electrode system and the lower electrode system, an upper electrode is connected with a thread micrometer, a measuring electrode in a lower electrode is insulated from a grounding electrode through a polytetrafluoroethylene casing pipe, and the grounding electrode is connected with the lower cover plate. According to the testing device for the oiled paper compound insulation frequency domain dielectric spectrum and conductivity test, a vacuum oiling way is adopted for achieving sufficient immersion of the insulation paper board and insulating oil, a heating device is applied outside the tank to set different environment temperatures, and the oiled paper insulation frequency domain dielectric spectrum and conductivity are accurately tested.

The invention discloses a triaxial creep tester of unsaturated soil, and relates to a geotechnical test apparatus. By inlaying a china clay plate with high air entry value in the pedestal of a pressure chamber, the geotechnical test apparatus allows water in a soil sample to pass through the china clay plate, but exerted gas cannot pass through, thereby realizing the aims of controlling groundmass suction and ensuring waterdrainage. The upper part of the china clay plate has a sample sleeved with a rubber membrane, and the upper part of the sample is provided with a porous plate and a sample cap; the sample cap is connected with a set of pipelines capable of controlling air pressure to exert pore air pressure on the sample and control pore air pressure; and the bottom of the china clay plate is respectively connected with a wash pipe and a drainpipe which play roles in washing air bubbles on the bottom of the china clay plate and waterdrainage respectively. A sample pressure chamber adopts a double-layer pressure chamber, namely a double-layer organic glass cylinder. An inner pressure chamber is filled with air-free water to exert a confining pressure on the sample, while an outer pressure chamber exerts an air pressure of equivalent confining pressure value to eliminate the influence on bulk variate caused by the deformation of the inner pressure chamber.

The invention relates to an automatic forming oil-hydraulic press for rare earth magnetic powder, and belongs to the technical field of high-quality rare earth permanent magnet mechatronic processing equipment. The automatic forming oil-hydraulic press for the rare earth magnetic powder consists of a feeding system, a forming and pressing system, a material taking system and an electrical control system, wherein body frames of the feeding system, the forming and pressing system and the material taking system are connected with each other in the shape of Chinese character 'pin'; a shell of the automatic forming oil-hydraulic press is sealed by transparent organic glass materials; and the inside of the automatic forming oil-hydraulic press is mutually communicated and provided with an oxygen content detector, so that the processing operation process of the rare earth magnetic powder can be performed in a completely hermetic inert protective gas environment. The automatic forming oil-hydraulic press has the advantages of automatic powder supply of the feeding system, a magnetic (field) oriental coil in a die component of the forming and pressing system, automatic die lubrication, leftover removal and a completely automatic PLC control system with a low oxygen concentration, and guarantees uniaxial orientation of the height of a magnetic axis of the rare earth magnetic powder and full automation, high accuracy, high reliability and high product quality in the whole pressing production process.

The invention provides a special portable miniature drainage cover for automatic underwater local dry-method welding. A drainage cover body of the drainage cover comprises an upper end cover, an organic glass cover and a lower end cover. A clamping rod, an air inlet quick plug connector, a lower locking sleeve, a cooling air chamber and an underwater camera component are fixed to the upper side of the upper end cover and the lower side of the upper end cover through threaded connection respectively, and the upper end cover and lower end cover are connected with the organic glass cover through threads. A welding oscillator is clamped on the upper portion of a copper welding torch of a welding gun. According to the structure of a drainage sealing device, drainage felt and a felt skirt are arranged on the periphery of the lower end cover, and the drainage felt and the felt skirt are fastened on the lower end cover through hose clamps; the copper welding torch of the welding gun is fastened through an upper locking sleeve and the lower locking sleeve, the welding gun is inserted into the organic glass cover, and an elastic rubber leather sheath is arranged between the upper locking sleeve and the lower locking sleeve. The special portable miniature drainage cover for automatic underwater local dry-method welding has the advantages of being simple in structure, exquisite, convenient and fast to use, low in cost, obvious in drainage effect, and stable and reliable in welding process. Moreover, a connector with the quality of on-land welding is formed, the welding efficiency is improved and the special portable miniature drainage cover is easy to popularize.

The invention relates to a method for depositing a metal or hard ornament film on a plastic substrate. In the method, the metal or hard ornament film is prepared on the surface of a plastic substrate material by using a radio frequency magnetron sputtering technology, and good binding force exists between the prepared ornament film and the substrate. The plastic substrate material comprises ABS plastic (terpolymer of acrylonitrile-butadiene-styrene), PMMA (polymethyl methacrylate) organic glass, PE (poly ethylene) plastics, PP (polypropylene) plastics and the like. The metal ornament film comprises chromium, nickel, titanium, aluminum, aurum, silver, iridium or alloys and the like, and the hard ornament film comprises metal nitrides, carbon compounds, oxides, diamonds and the like. The method has the advantages of simple operation, no pollution and low cost, and the prepared film is good in adhesive force.

The invention discloses a pile foundation bearing characteristic model test device under a complicated load effect. The pile foundation bearing characteristic model test device comprises a model groove, a horizontal loading system, a vertical loading system and a measuring device. The model groove is made of an organic glass panel and is reinforced by channel steel. The horizontal loading system is composed of a pulley and a weight. The vertical loading system is composed of vertical channel steel, a counter-force beam, a lifting jack and a linear sliding guide rail. The measuring device comprises a minitype laser displacement sensor system which is used for measuring the horizontal displacement of a pile head and the sedimentation of a pile tip and can horizontally move along with the moving of the pile head. The measuring device further comprises a pull rope displacement sensor system which measures the horizontal displacement of a pile body. The invention further discloses the test method of the pile foundation bearing characteristic model test device. According to the pile foundation bearing characteristic model test device and method, loading is simple, the load direction is stable, the data of pile sedimentation, pile head horizontal displacement, pile body horizontal displacement and the like of a model can be accurately measured, the measured data is high in precision, and pile foundation bearing characteristic model test research under the complicated load effect can be conducted conveniently and effectively.

The invention relates to a photographing device, particularly to an auxiliary support for photographing through a mobile phone or a camera. The support comprises a base, transparent organic glass, a column, a camera fixing component and a mobile phone holder for fixing the mobile phone, wherein the transparent organic glass is arranged on the base, the column is connected with the side of the base, a transverse bar capable of moving up and down along the column is arranged on the column, the mobile phone holder is fixed at the end of the transverse bar and rotatably connected with the transverse bar, the camera fixing component comprises a camera connecting support for fixing the camera and a camera fixing screw, and the camera connecting support is arranged on the column. According to the auxiliary support, the transverse bar can move up and down along the column, therefore photos in different sizes can be photographed; and the transverse bar is rotatably connected with the mobile phone holder, therefore the mobile phone holder can drive the mobile phone to rotate at 180 degrees, photos or videos can be photographed as needed, and pictures can be photographed when the mobile phone holder is horizontally placed.

The invention discloses a method for flow-electrode capacitive deionization (FCDI)-based desalination and application. According to the method, a direct current voltage stabilization power supply, a flow electrode, a dual-channel peristaltic pump, an FCDI module unit, a small-size peristaltic pump, a conductivity meter, an organic glass fixing device, a stainless steel interface and an electrode connection splice are involved; one end of each of two pump pipes of the dual-channel peristaltic pump is arranged in each of anode chamber flow electrode liquid and cathode chamber flow electrode liquid, and the other end of the pump pipe is connected with the stainless steel interface in the lower part of the organic glass fixing device; the flow electrode enters the FCDI unit module through the stainless steel interface through pressure provided by the dual-channel peristaltic pump; incoming water is pumped into the FDCI unit module with a prepared sodium chloride solution with different concentration at certain flow speed through the small-size peristaltic pump; the conductivity meter is used for measuring the conductivity concentration of discharged water. A reaction device used in the method is simple in structure, low in operation cost and easy to operate, and no chemicals is fed; automatic control and on-line monitoring are easy to implement; the method is low in energy consumption, and the preparation cost of the electrode is lowered; the method can be applied to the technical field of environmental engineering and water treatment.

The invention discloses a dielectric barrier discharge plasma, adsorption and photocatalysis synergy waste water treatment device, which is characterized in that: an organic glass cylinder and a quartz glass tube are arranged to form a sleeve; the organic glass cylinder serves as an outer sleeve layer; active carbon fibers carrying a titanium dioxide photocatalyst are fixed on the inner side wall of the organic glass cylinder; the top part of the organic glass cylinder is provided with a water distributer capable of forming a water film on the surface of the active carbon fibers; the water in a water tank is led to the water distributor by a water pump; the quartz glass tube serves as a central tube; and a cylindrical metal electrode is arranged in the quartz glass tube to form a dielectric barrier discharge cavity. The device combines a dielectric barrier discharge plasma technique and an adsorption and photocatalysis technique to achieve a waste water treatment aim.

The invention relates to a visualized microscopic model of a real core and a manufacturing method of the visualized microscopic model of the real core. The model comprises a real core sheet, an organic glass cover plate, an organic glass slide and a needle and is formed via the pressure at high temperatures; the real core sheet is milled to be visualized and is then clamped between two pieces of the organic glass; the needle is firstly fixed well, and the organic glass cover plate is then arranged; at a high temperature and at a high pressure, the organic glass is softened to be adhered more tightly with the core sheet; and the model is formed by cooling. According to the visualized microscopic model and the manufacturing method provided by the invention, the physico-chemical properties of the real core are kept, and the distribution and flowing condition of the multi-phase fluid in the porous medium pores are observed, so that the visualized microscopic model and the manufacturing method play an important role in studying the percolation mechanism and enhancing the yield of the polymer microspheres.

The invention relates to a curved-surface steel plate residual stress ultrasonic detection transceiver device. The device comprises an organic glass wedge, an ultrasonic transducer, and a magnetic base. A sensor device has a one-transmitting and one-receiving structure. Two devices adopt the magnetic base for ensuring the close contact and coupling of the sensor and a test sample. Because of the influence of curvature, incidence angles of point of a sound beam are different. According to the invention, the problems of organic glass curvature and ultrasonic incident angle are explained during a design process. The design idea provided by the invention is innovative. With the device provided by the invention, a difficulty of pipe stress detection is well solved, and a good application prospect is provided.

The invention discloses a rock mechanical test loading device under brine corrosion conditions, comprising a container, a ball-end cylindrical indenter, the upper jaw of a fixture, the lower jaw of the fixture and a circulation pump. Glass cement is applied in two pre-reserved slits on a stainless steel frame, an organic glass plate is inserted into the slits, symmetrical screen sandwich grooves are welded on the container, screens are inserted into the symmetrical screen sandwich grooves, a drain hole on the bottom of the container is sealed by a screw plug and a rubber gasket, a ball valve is connected with the container, and the ball valve on the container is connected with a circulating pump through a transparent plastic hose. A rock sample splitting fixture is disposed in the container and consists of the arc-shaped upper jaw and the arc-shaped lower jaw of the fixture, and the upper jaw of the fixture is connected with the ball-end cylindrical indenter. The invention has simple structure and convenient operation, and can simulate the actual operating condition that brine and a flow field cooperatively act on a dissolution cavity in the cavity creating process of gas (oil) storage, thus obtaining more actual and reliable parameters detected by indoor test.

A volumetric three-dimensional display panel and a volumetric three-dimensional display system employing the volumetric three-dimensional display panel are provided, wherein the volumetric three-dimensional display panel is formed by stacking a plurality of transparent flat display panels, such as, organic light-emitting devices. In the volumetric three-dimensional display panel, two-dimensional images are displayed on the transparent three-dimensional display panels, respectively, to form a single three-dimensional image.

The invention relates to a nanometer zero-valent ion composite material and a preparation method thereof. The preparation method comprises the steps that corn straw biochar is prepared, modified by being soaked with nitric acid, washed to be neutral and then dried for use; FeSO4.7H2O is reduced into zero-valent iron in a nitrogen environment through a liquid phase reduction method, and the zero-valent iron is loaded on the biochar; solid-liquid separation is conducted on the solution obtained after reacting, and the biochar-loaded nanometer zero-valent ion composite material is obtained. The material is used for removing lead in underground water, the agglomeration and activity reduction problems of iron nanoparticles in the using process are solved, secondary contamination cannot be generated in repair practice, a removal experiment of the lead in the underground water is simulated in a constructed organic glass simulation reaction column, and the removal rate can reach 90% or above.

The invention provides a measurement testing device of external characteristics and internal flow of a fused salt model pump. The measurement testing device of external characteristics and internal flow of the fused salt model pump is mainly used for measuring the external characteristics and an internal velocity field of the fused salt model pump, and carrying out shooting and research of high-speed flow inside the fused salt model pump. The measurement testing device of external characteristics and internal flow of the fused salt model pump mainly comprises a pipeline system, a power transmission system, a model pump, an external characteristic data acquisition and analysis system and an internal flow measurement system. Arrangement of the pipeline system ensures an enough operating space, high measurement accuracy and convenience of testing when tests are carried out. The power transmission system provides power for stable operation of the fused salt model pump. An impeller and a pump supporting seat of the fused salt model pump are made of stainless steel, other components of the fused salt model pump are made of organic glass, and the fused salt model pump has the advantages of being good in hydraulic performance, high in strength, wide in measurable area and the like. The external characteristic data acquisition and analysis system collects signals of pressure, revolving speed, torque, flow and the like, the signals are processed and analyzed, and the external characteristics of the fused salt model pump are obtained. The internal flow measurement system can carry out peak inverse voltage (PIV) measurement to the internal velocity field of the fused salt model pump, carries out internal peeping high-speed imaging to internal flow of the fused salt model pump, and achieves research of an internal whole flow field of fused salt model pump.

The invention discloses a testing device for observing shear deformation failure characteristics between a tubular pile and a grouting soil body. The testing device comprises a fixing platform, a tubular pile model testing box, a loading mechanism and a monitoring system, wherein the fixing platform comprises a base plate, a top plate and a plurality of connecting screw rods; the tubular pile model testing box comprises a bottom wall, two side walls, a rear wall and a front wall, wherein the front wall is movably arranged between the side walls, and is made of colorless transparent organic glass; the monitoring system comprises a displacement sensor, a pressure sensor and a strain rosette group arranged on the outer surface of the tubular pile; the strain rosette group comprises a plurality of strain rosettes which are uniformly distributed along the central axis direction of the tubular pile, and are connected with an automatic recorder. According to the invention, a semi-circular pipe pile is adopted, so that the shear deformation failure characteristics between the tubular pile and the grouting soil body can be observed conveniently, and the shear resistant intensity between the tubular pile and the grouting soil body can be observed; a camera device is adopted for recording the video of the testing process; the visual testing enables the analysis to be relatively intuitive.

The invention discloses a pile-supported embankment transparent soil model testing device and method. The device comprises a model groove, transparent soil, a pile body, a water bag, a water pipe, an industrial camera, and a laser emitter. The box-type water bag is placed on the bottom of the model groove made of organic glass. A pile hole position is reserved in the box-type water bag. A pile hole is reserved in the box-type water bag. A pile can be inserted into the pile hole in the box-type water bag. Under the assistance of transparent soil, the soil arch effect of embankment soil under self-weight load can be simulated by discharging the water in the box-type water bag. The invention also discloses a testing method of the testing device. The testing method comprises steps of installing pile and water bag, constructing a transparent soil embankment, slowly discharging water from the water bag, taking pictures of the laser plane by the industrial camera during the water discharging process, and analyzing the pictures to obtain the three dimensional deformation characteristics. The provided device and method have the advantages that high precision realtime measurement on the internal deformation of soil can be achieved, the macroscopic shape change of spacial soil arch can be observed, multiple work conditions can be simulated, the size of the testing device is small, the test operation is convenient, and the efficiency is improved.

The invention discloses a measuring device and a measuring method of an internal flow field and external characteristics of a water-jet propeller, and relates to the field of ship propulsion. A power unit of the measuring device of the internal flow field and the external characteristics of the water-jet propeller is suspended inside a ship model; two thrust acquisition modules of a data acquisition unit are arranged at the middle front part and the tail part of the ship model respectively; an axial force acquisition module is arranged on the power unit; a rotating speed and a torque acquisition module is arranged on the power unit. According to the invention, as a propeller shell made of a transparent organic glass material is adopted, observation and measurement for the internal flow field of the water-jet propeller are realized; as the data acquisition unit obtains the thrust, the axial force, the rotating speed and the torque of the propeller, and calculates the power of the propeller based on the rotating speed and the torque, the external characteristic of the propeller is accordingly obtained; the measuring device for the internal flow field and the external characteristic of the water-jet propeller is simple in structure, high in measurement precision and strong in operability.

The invention discloses a cyclic shear apparatus which belongs to mechanic characteristic testing equipment and is used for observing the mechanical characteristic of the contact surface between structural member and soil. The cyclic shear apparatus consists essentially of a soil container vehicle which is arranged inside a bracket, a normal boundary control unit, a data collecting system and a hydraulic loading and control system which is fixed on the bracket; the soil container vehicle is arranged on a horizontal track on the internal bottom surface of the bracket; testing soils are fully filled in the vehicle where a structural panel is horizontally arranged; the normal boundary control unit is arranged on the upper surface of the structural panel; furthermore, the soil container vehicle is provided with an organic glass window. The cyclic shear apparatus can lead the static and dynamic mechanical characteristic of the contact surface under complicated stresses to reappear; furthermore, the cyclic shear apparatus directly exerts normal boundary conditions on the contact surface and measures the deformation of the contact surface due to bearing force, thus improving the testing and measuring precision; digital photography is used for directly recording the microscopic phenomena of the soil gains such as microscopic state arranging, sliding of the gains along the long axis direction and along the structural surface, rotating of the gain, and crushing of the gains, etc. so as to facilitate the analysis; furthermore, the cyclic shear apparatus can further determine the distribution of relative displacement of the soil and structural member along the contact surface and the thickness of the contact surface.

A heat-settable composition for a coating which is hydrophobic, oleophobic and resistant to abrasion, wherein the coating contains a hydrolyzate obtained from a solution of:one or more epoxidized alkoxysilane having alkoxy groups which are directly linked to the silicon atom;a hydrolyzable, non-epoxidized silane;colloidal silica;a catalyst which promotes cleavage of an epoxy bond; andat least one fluorinated hydrolyzable alkylsilane; and the use of the heat-settable composition in the preparation of a coated substrate of organic glass or mineral glass material, coated with a coating obtained from the heat-settable composition, with the substrate preferably being a pane (comprised of glass or a polymeric material) or an ophthalmic lens.