13results about How to "Achieve composite" patented technology

The invention relates to the technical field of skull repair, and discloses a personalized 3D printing porous composite hydroxyapatite coating skull repair body which comprises a truss structure, a plurality of porous areas are distributed on the truss structure, bionic bone trabecula structures are integrally formed in the porous areas, the truss structure is composed of hollow pipes communicating with one another, and the hollow pipes communicate with one another. A plurality of small holes and micro holes which are communicated with the interior of the hollow pipe are formed in the hollow pipe, and a composite coating of a hydroxyapatite coating and titanium is sprayed on the porous area; the invention provides a personalized 3D printed skull restoration with a porous composite hydroxyapatite coating. The problem that the biocompatibility, the bone induction capability and the bone ingrowth effect of an existing skull restoration need to be improved is solved.

The invention discloses a three-dimensional silicon-based macroscopic graphene composite wide-spectrum detector and a preparation method, and the photoelectric detector comprises a silicon layer which is provided with an insulating dielectric layer, the insulating dielectric layer and the silicon layer are provided with concentric grooves, a top electrode is arranged above the insulating dielectric layer, and a bottom contact electrode is arranged below the silicon layer; the three-dimensional silicon nano strip is arranged in the groove in the silicon layer and is connected with the silicon layer; the macroscopic assembly graphene is arranged above the top electrode and the insulating dielectric layer, is in direct contact with the top electrode and the insulating dielectric layer, and is in contact with the three-dimensional silicon nano strip to form a Schottky node; and the part in the groove area of the insulating dielectric layer is patterned to form the macroscopic assembly graphene nano strip. The invention relates to the technical field of photoelectric detection, realizes the composition of a macroscopically assembled graphene nanostructure and a silicon nanostructure for the first time, and solves the problem that the existing silicon-based graphene photoelectric detector has weak detection performance in an ultra-wide spectral range, especially in an infrared band.

The invention discloses an underground artificial tunnel energy storage cavern flexible sealing layer which is formed by lap joint of a plurality of flexible sealing units, and each flexible sealing unit comprises a high-elasticity rubber body layer, an HDPE stereoscopic film and a high-strength filament net; the high-strength filament net is attached to the inner side face of the HDPE three-dimensional film, then the high-elasticity rubber body is sprayed to achieve composite connection, the ends of the anchoring parts are arranged in a protruding mode and poured together with concrete, and tight connection and attachment of the HDPE three-dimensional film, the high-strength filament net and the high-elasticity rubber body and the reinforced concrete lining are achieved; the sealing performance and the pressure resistance of the energy storage cavern of the artificial tunnel are improved; the flexible sealing layer forms a full-wrapping complete HDPE three-dimensional anti-leakage system, potential leakage of an internal energy storage medium passing through the energy storage cavern structure is comprehensively blocked, local defects such as the leakage risk of cracks caused by deformation of the energy storage cavern are greatly reduced, the sealing performance of the structure can be guaranteed to the maximum extent, the service life of the energy storage cavern is greatly prolonged, and the energy storage cavern is suitable for large-scale popularization and application. And the energy storage efficiency of the cavern is improved.

The invention provides a corrosion-resistant aluminum plastic film with a smooth surface and a preparation method thereof. The preparation method of the anti-corrosion aluminum plastic film with the smooth surface comprises the following steps: carrying out surface passivation treatment operation on the aluminum foil; the passivated aluminum foil is subjected to layer compounding operation, so that the matt surface of the passivated aluminum foil is compounded with the nylon material layer, the bright surface of the passivated aluminum foil is compounded with the CPP layer, and the composite aluminum foil is obtained; curing the composite aluminum foil; the semi-finished aluminum-plastic film is subjected to smooth anti-corrosion treatment, so that an anti-corrosion smooth layer is formed on the surface of the nylon material layer of the semi-finished aluminum-plastic film; and the pretreated aluminum plastic film is subjected to slipping treatment, so that an etched slipping layer is formed on the surface of the CPP layer of the semi-finished aluminum plastic film. According to the preparation method of the aluminum-plastic film with the smooth surface and the corrosion resistance, the smooth effect of the aluminum-plastic film is good, the deep drawing performance and the outer surface corrosion resistance of the aluminum-plastic film can be well improved, and then the requirements of users can be well met.

The utility model discloses a device for testing the composite fastness of transfer paper, which comprises a workbench, a driving roller, a compression roller and an adhesive tape roller, a conveying plate is fixed above the workbench, the driving roller is positioned at the lower part of the conveying plate, the compression roller is positioned at the upper part of the conveying plate, the compression roller can abut against the driving roller, the adhesive tape roller is positioned above the compression roller, and the compression roller is connected with the adhesive tape roller through a belt. The rotating compression roller can drive the adhesive tape roller to rotate, adhesive tape unwound by the adhesive tape roller can be conveyed between the compression roller and the driving roller, first supporting frames are fixed to the upper portion of the workbench and located on the two sides of the conveying plate, and the two ends of the driving roller and the two ends of the compression roller are connected with the two first supporting frames respectively. The adhesive tape roller can be driven to rotate by rotating the pressing roller, so that the adhesive tape roller unwinds or winds the adhesive tape, the adhesive tape can be pasted on the surface of transfer paper or the adhesive tape on the surface of the transfer paper can be torn off, pasting of the large-width adhesive tape and the transfer paper can be achieved, and the accuracy of a detection result is improved.

The invention relates to the technical field of measuring low-altitude meteorological parameters by using a laser radar, and discloses a low-altitude meteorological multi-parameter laser radar, which is characterized in that two light sources, namely an infrared light source and an ultraviolet light source, are controlled by a data processing and control system, and laser emission is carried out according to a certain time sequence; scattered light generated after the two light sources act with the atmosphere is received by the composite optical antenna, is processed by the data processing and control system, and is displayed by the display terminal. According to the optical composite optical antenna system, a conventional shielding secondary mirror is utilized through the design of a specific light splitting process, a structural form and a specific size while a conventional receiving sectional area is not influenced, so that the use efficiency is improved, simultaneous observation of a plurality of meteorological parameters can be realized, the overall size is small, and the antenna system is convenient to use. The system is convenient to deploy in low-altitude use scenes such as urban roofs, realizes rapid and accurate observation of low-altitude meteorological parameters, and guarantees the flight safety of low-altitude aircrafts.

This utility model discloses a fireproof wrapping tape and a cable, relating to the field of fire-resistant and heat-insulating technology. The fireproof wrapping tape includes a fireproof and heat-insulating layer and a first protective layer. The first protective layer and the fireproof and heat-insulating layer are stacked and sewn together by a seam. The seam is located in the middle of the width of the fireproof wrapping tape and extends along its length. Compared with the prior art, the fireproof wrapping tape provided by this utility model has a simple structure due to the use of a stacked first protective layer and a fireproof and heat-insulating layer, as well as a seam located in the middle of the fireproof wrapping tape and extending along its length. It allows for rapid material bonding through single-needle sewing, simplifying the bonding process, improving production efficiency, and enhancing economic benefits.

This invention proposes an in-situ conformal heating and homogenization forming method for irregularly shaped internal cavity composite cylindrical parts. The method involves: designing a composite layup of carbon fiber prepreg and a heat-replenishing adhesive film; preparing the heating and heat-replenishing adhesive film; composite laying of the carbon fiber prepreg and the heat-replenishing adhesive film; bonding the heating film with a metal outer mold; curing reaction; demolding; and machining. This invention provides an in-situ conformal heating and homogenization forming method for irregularly shaped internal cavity composite cylindrical parts. It explores the forming mechanism under the coupled action of the homogenizing temperature field and pressure field, which are synergistically controlled by the heating film and the heat-replenishing adhesive film under varying thicknesses. This forms a macroscopic multi-scale temperature gradient integrated forming technology, achieving homogenized, low-cost, high-efficiency, and low-energy-consumption manufacturing of large-size complex cylindrical parts. This meets various mechanical performance indicators of the products and enables their application, enhancing the competitiveness of high-end composite products in the defense field.

The invention relates to the field of biological recognition, in particular to a preparation method of a Raman composite substrate material with biological recognition activity, which comprises the following steps: S1, preparing a GO dispersion liquid; s2, gold nanospheres are prepared, and a gold nanosphere solution with OD 0.5 is prepared after purification; s3, respectively preparing a sodium chloride solution, a chloroauric acid solution and a single-stranded DNA solution; s4, mixing and reacting the GO dispersion liquid, the single-stranded DNA solution, NaCl, HAuCl4 and the gold nanosphere solution for 1 hour; s5, adding an NH2OH solution into the mixture prepared in the step S4, and reacting for 3 hours; and S6, centrifuging the reaction product obtained in the step S5, removing the supernatant, washing twice with ultrapure water, and re-suspending in ultrapure water to obtain the Au / DNA / GO composite nanomaterial. According to the invention, the compounding of the GO and the gold nanomaterial and the fixation of the DNA sequence are realized through the gold ion reduction regulated by DNA, the biological recognition activity of the fixed DNA sequence is maintained, and the prepared Raman composite substrate material has a better Raman signal enhancement effect.

The application discloses a root system structure bionic high-temperature-resistant protective coating and a preparation method thereof. The coating comprises a root system structure module and a soil structure module. The root system structure module is a boride-silicon-based ceramic phase, and the soil structure module is a low-melting-point glass phase. The low-melting-point glass phase is stabilized by the boride-silicon-based ceramic phase in the composite coating through bionic root system structure. The preparation method comprises the following steps: mixing raw materials, densification treatment and polishing. Compared with the prior art, the application has the advantages that the low-melting-point glass in the high-temperature-resistant protective coating is effectively compounded, the softening modification effect of the glass phase is utilized, the densification temperature of the coating is reduced, the sealing degree of the oxygen-blocking structure of the coating is further promoted, the oxygen-blocking defect problem of the internal structure of the coating is solved, and the advantages of energy saving and oxygen-blocking strengthening of the coating are achieved.

The invention relates to the field of hygienic product processing, in particular to hygienic product core processing equipment which comprises a mold roller, a plurality of forming grooves are formed in the circumferential side face of the mold roller, and the forming grooves in the mold roller are sequentially distributed around the circumferential side face of the mold roller; the forming groove rotates to the feeding area, and the mixed materials enter the forming groove; the hot air setting area comprises a hot air pipe, and an air outlet of the hot air pipe faces the mold roller; the discharging area is an area where the product is separated from the forming groove; along with the rotation of the mold roller, the forming groove rotates from the hot air setting area to the discharging area for discharging; a negative pressure cavity is formed in the mold roller, and the negative pressure cavity is communicated with the forming groove after mixed materials enter the forming groove and before the mixed materials are discharged. By means of the equipment, the dumbbell-shaped core body can be machined, meanwhile, generation of waste materials is reduced, and material waste is reduced.

The application relates to the technical field of sunshields and discloses a high-low temperature alternating sunshield assembly anti-fatigue test system which comprises a sealed cabin body, cabinet doors are symmetrically hinged and installed at the front and back ends of the sealed cabin body, an air duct plate is installed at the upper end of the sealed cabin body, air cavities are symmetrically preset in the air duct plate, a baffle is symmetrically installed on the inner wall of the sealed cabin body, and a plurality of rectangular sunshield bodies are evenly distributed below the baffle. The high-low temperature alternating sunshield assembly anti-fatigue test system can effectively solve the two defects of the sunshield test system in the prior art, that is, the sunshield test system cannot simultaneously perform high-low temperature alternating and turnover load test, and is mostly used for normal temperature / constant temperature test schemes, and the schemes have a large deviation from the real vehicle working condition; and the sunshield test system only supports single X-axis direction turnover and cannot simulate Y-axis direction turnover and composite operations such as pulling, so that the anti-fatigue performance cannot be objectively evaluated.

The invention relates to the technical field of preparation of metal composite powder, in particular to a preparation process of tungsten-copper alloy powder, which comprises the following steps: S1, precursor compounding: performing electrochemical replacement reaction on a tungsten-containing substance and a copper-containing substance in a liquid phase to prepare a tungsten-copper composite precursor suspension; s2, freeze drying: performing spray freeze drying on the tungsten-copper composite precursor suspension to obtain fluffy porous precursor powder; and S3, reduction: performing low-temperature heat treatment on the precursor powder in a reducing atmosphere to obtain the tungsten-copper alloy powder. According to the method, copper atoms are directly subjected to reduction deposition on active sites of tungsten by utilizing the characteristic that electrochemical replacement reaction is carried out spontaneously, compounding on the atomic scale is achieved, and compared with physical mixing and surface coating of a copper plating method in the prior art, the uniformity of tungsten-copper two-phase mixing is effectively improved.