16results about How to "Controllable shape" patented technology

The present invention relates to the field of building construction, and specifically to a regular bottom-expanded size bladder injection bag, comprising a slurry bladder bag, an upper partition, a grouting pipe, a drainage network, a drainage pipe and a limit strip, wherein an upper partition is arranged at the upper end of the slurry bladder bag, a hole cover is arranged in the middle of the upper partition, a conveying rod is detachably arranged on the upper partition at the periphery of the hole cover, a grouting pipe is arranged on the hole cover, the grouting pipe is connected with the inside of the slurry bladder bag, a drainage network is arranged on the outside of the slurry bladder bag, the drainage network is connected to the drainage pipe through the upper partition and the hole cover, the drainage pipe is arranged on the hole cover, a bottom partition or a pile shoe is arranged at the lower end of the slurry bladder bag, and a limit strip is located on the outside of the slurry bladder bag and is hingedly arranged on the upper partition. It also relates to a regular bottom-expanded size bladder injection molding method. The present invention can effectively control the unfolding shape of the bladder injection bag, can realize the regularization and optimization of the shape of the pile end enlarged head, can accelerate the compaction of the soil, expand the compaction range of the soil and increase the compaction space, and improve the bearing capacity of the pile end and the pile as a whole.

The present application discloses a digestive tract polyp cutting and collecting instrument, comprising a fixing part, a front support ring, a rear support ring and a net bag, the projection of each support ring on its cross section comprises a leading moving part, a rear moving part and an elastic part arranged between the leading moving part and the rear moving part, each support ring is connected with a net bag respectively, the rear moving part of the front support ring is connected with the leading moving part of the rear support ring, and the fixing part is connected with the rear moving part of the rear support ring; it also comprises a traction part, which is provided with a traction end capable of moving along a first direction and is connected with the leading moving part of the front support ring, along the first direction, the traction end, the leading moving part and the rear moving part of the front support ring, the leading moving part and the rear moving part of the rear support ring, and the fixing part are arranged in sequence; the elastic force generated by the elastic part of the front support ring in a closed state is smaller than the elastic force generated by the elastic part of the rear support ring in a closed state, and under the action of the traction end, the front support ring and the rear support ring can be closed sequentially along the first direction.

The invention discloses a replaceable silica gel part forming mold suitable for production of various silica gel saddles and application thereof.The mold comprises a leather pressing plate (1) and a lower mold (2) which are arranged in an up-down matched mode, and the upper surface of the lower mold (2) is provided with an inwards-sunken silica gel injection mold cavity (4); a silica gel injection mold cavity (4) is formed in the upper surface of the lower mold (2), a vacuumizing cavity (5) which is concave inwards is also formed in the lower surface of the lower mold (2), a plurality of through holes (6) are formed between the silica gel injection mold cavity (4) and the vacuumizing cavity (5), a lower mold plate (7) is further detachably arranged below the lower mold (2), and a vacuumizing hole (14) communicated with the vacuumizing cavity (5) is further formed in the lower mold (2). The mold is simple in structure and convenient to use; the lower die of the die can be replaced according to different requirements; the shape of the silica gel required to be obtained in the production is controllable, and the customization requirement of a customer can be met; the silica gel injection amount is smaller than that of a traditional process.

The utility model provides a device capable of quickly winding a lithium strip, which relates to the field of winding devices and comprises a base, and a left side plate and a right side plate are fixed on the same side of the base at intervals; one end of the supporting rod is fixed to the left side plate, a plurality of lock holes are formed in the other end of the supporting rod at intervals, and locking pins are inserted into the lock holes. The tape reel comprises a sleeve and two baffle discs, the sleeve is arranged on the supporting rod in a sleeving mode, the two baffle discs are fixed to the two ends of the sleeve, and a lithium tape cake is wound outside the sleeve; the rotating shaft is rotationally mounted on the right side plate, so that a lithium strip is wound when the rotating shaft rotates; the baffle sleeves the rotating shaft and is fixed with the right side plate; the pressing device is arranged above the rotating shaft in a manner of moving up and down and is used for pressing the lithium strip on the rotating shaft; the driving piece is fixedly connected with one end of the rotating shaft and used for driving the rotating shaft to rotate. The lithium strip can be wound by driving the rotating shaft to rotate, the pressing device can guarantee that the lithium strip cannot loosen during winding, and compared with manual finger winding, the lithium strip winding device is controllable in shape and high in speed.

The invention provides a preparation method of a porous electrode, the porous electrode and application of the porous electrode. The preparation method comprises the following steps: performing first etching on at least one surface of an electrode current collector to obtain an electrode current collector with holes; filling holes in the electrode current collector with a pore-filling agent, and performing second etching on a region, which does not contain the pore-filling agent, in the filled electrode current collector, so that the electrode current collector has surface pore-filling agent bulges, thereby obtaining a to-be-used electrode current collector; coating the surface of the to-be-used electrode current collector with electrode slurry to obtain a to-be-treated electrode; and removing the pore filling agent from the electrode to be treated to obtain the porous electrode. According to the preparation method provided by the invention, the preparation of the electrode with the low-tortuosity pore structure is really realized, so that the continuous batch preparation of the battery with the low-tortuosity electrode is realized, the operability and the high efficiency are realized, and the problem that the capacity, the rate and the cycle performance of the current thick electrode are relatively poor due to ion transmission limitation is solved.

The invention belongs to the field of atomic precision machining, and discloses a preparation method of an atomic-scale sharp diamond cutting edge, which comprises the following steps: step 1, determining the geometrical shape of the atomic-scale sharp diamond cutting edge; 2, finishing a diamond surface with specific crystal orientation by using femtosecond laser; 3, designing a clamping device of the atomic-scale sharp diamond cutting edge; 4, preparing a nano-sized diamond micro-column by using a focused ion beam, and transferring the nano-sized diamond micro-column to a cutting edge clamping device; 5, the argon plasma polishing technology is used for enabling the surface of the diamond nanorod to reach atomic level flatness; step 6, atomic-scale cleavage of the diamond nanorod is realized by using an X-Nano multi-degree-of-freedom nano manipulation technology; and 7, representing and verifying the atomic-scale sharp diamond cutting edge by using a spherical aberration electron microscope. The sharp diamond cutting edge with the cutting edge blunt circle radius reaching the atomic scale is prepared through a micro-nano machining and atomic scale controllable cleavage method.

The preparation method of the carbon material catalytic electrode material provided by the present invention can form a core-shell structure in which the core is a metal-N-doped carbon core with a low surface work function and the shell is a MAX semiconducting phase, the core or small microsphere inside the core-shell structure has a low surface work function, forming a high catalytic carbon core, and can prevent the direct contact between the catalytic carbon core and the electrolyte, greatly reducing the shedding of metal-doped atoms and the occurrence of side reactions, the outer polymer large microsphere inherits the topological structure of the phenolic-phenolic amine-pyrrole polymer, can effectively regulate the carbonization reaction process of the conjugated skeleton, and the side chain carbon formed while the shell directly constructs a developed pore structure can further selectively adsorb and desorb the reactant, greatly improving the catalytic efficiency of the electrocatalytic material. Thereby, the catalytic electrode material finally prepared produces a large current density and a high Faraday efficiency at a low overpotential, and can ensure that the catalytic electrode material has high mechanical strength.

The invention relates to a titanium silicalite molecular sieve, a preparation method thereof and a method for preparing epoxypropane, and the method comprises the following steps: S1, mixing titanium silicalite molecular sieve raw powder, a first main binder, water, an optional first binder and an optional first surfactant, and carrying out first molding to obtain titanium silicalite molecular sieve microspheres; s2, mixing the titanium silicalite molecular sieve microspheres, a second binder, water and an optional second surfactant, and carrying out secondary molding to obtain a titanium silicalite molecular sieve precursor; s3, performing steam aging on the titanium silicalite molecular sieve precursor to obtain a titanium silicalite molecular sieve pre-product; and S4, carrying out roasting treatment on the titanium silicalite molecular sieve pre-product. The titanium silicalite molecular sieve prepared by the method disclosed by the invention has a porous structure and high mechanical strength, is used for propylene epoxidation reaction, and can obtain relatively high raw material conversion rate and target product selectivity.

The present invention discloses a fiber bundle molding system and method with micropores, including a yarn storage rack, a coating device, a hole-forming device, and a winding device. The yarn storage rack, the coating device, the hole-forming device, and the winding device are sequentially arranged on the fiber bundle molding path. The yarn storage rack includes a yarn storage disk. The coating device can coat resin or film-like material on the surface of the fiber bundle. The hole-forming device includes a multi-degree-of-freedom head and a hole-forming bottom plate. The multi-degree-of-freedom head includes a plurality of hole-forming needles, a needle plate seat, and a needle stripping plate. The molding system of the present invention has the function of preparing micropores of various shapes and sizes. It is based on widening the fiber bundle. The formed micropores have good effect, the morphology remains intact, the spacing is adjustable and controllable, the fiber continuity is good, and the damage to the fiber is reduced. It can be used for rapid molding of high-performance fiber preforms.

The invention relates to the technical field of biological scaffolds, and discloses a biological scaffold loaded with angelica polysaccharide and application of the biological scaffold in repairing full-thickness cartilage defect, a porous polycaprolactone scaffold is constructed through a 3D printing technology, and polydopamine is adopted for chemical modification of the porous polycaprolactone scaffold, so that the hydrophilicity of the scaffold is improved; meanwhile, poly (lactic acid-glycollic acid) nano-microspheres are prepared for wrapping the angelica polysaccharide and are combined with the PCL / PDA scaffold to form the biological scaffold of the angelica polysaccharide for repairing the full-thickness cartilage defect. By means of the 3D printing technology, the biological scaffold loaded with the angelica polysaccharide can be processed into the shape accurately matched with the shape of the anatomical structure of the part needing to be repaired, the biological scaffold can be better attached to the defect position, a basic framework is provided for cartilage repair, and hope is brought to development and technical innovation of full-thickness cartilage defect repair materials.

The application provides a multistage micro-nano structure and a preparation method and application thereof, and comprises the following steps: (1) preparing a sacrificial layer on the surface of an initial substrate; (2) preparing a multilayer electron beam resist on the surface of the sacrificial layer, wherein the sensitivities of adjacent two layers of the electron beam resist are different; (3) performing electron beam exposure, development and fixation on the multilayer electron beam resist to obtain a multistage micro-nano resist structure, wherein the exposure patterns and exposure doses of adjacent two layers of the electron beam resist are different; (4) filling the multistage micro-nano resist structure and forming a thin film on the top layer of the multistage micro-nano resist structure; (5) removing the sacrificial layer, turning over and transferring the part above the sacrificial layer upside down to a target substrate, removing the residual electron beam resist, and optionally removing the thin film to obtain the multistage micro-nano structure. The method of the application only needs one-time exposure and thin film deposition, and the prepared multistage micro-nano structure has wide application prospects in the fields of microfluidic devices, optoelectronic devices and the like.

The present invention provides a pile bottom side bag grouting device based on a hollow pile and a pile bottom side grouting method, wherein a slurry relay device and a pile bottom plate are sequentially arranged at the bottom of the hollow pile from top to bottom; the slurry relay device is provided with a relay cavity, the outer wall of the relay cavity is provided with a slurry outlet hole, the relay cavity is provided with a docking device, the docking device is used for active sealing connection with a movable grouting pipe, a bag structure is fixed on the outer side of the slurry relay device, the bag structure is provided with a grouting bag, the grouting bag is communicated with the grouting hole, and the slurry injected by the movable grouting pipe is opened through the relay cavity to form an expanded bottom part at the side of the pile bottom. The present invention performs grouting by cooperating with the movable grouting pipe and the slurry relay device, thereby reducing the influence of grouting on pile pressing construction, and the grouting pipe can be reused; the outer wall of the slurry relay device is provided with a bag structure, which effectively controls the disordered diffusion and final form of the slurry in the soil, saves grouting materials, gives full play to the pile-soil joint effect, and improves the bearing capacity.

This invention discloses a method for preparing yttrium-magnesium oxide (YMO) multiphase transparent ceramics using non-aqueous gel casting, belonging to the field of ceramic preparation technology. To overcome the problems associated with water-based gel casting, this invention provides a method for preparing YMO multiphase transparent ceramics using non-aqueous gel casting, comprising: ball milling Y2O3, MgO, a dispersant, and a non-aqueous solvent; then adding epoxy resin and a curing agent and ball milling again; the resulting ceramic slurry is defoamed, cured, and dried; then subjected to debinding, sintering densification, cooling, hot isostatic pressing, annealing, and polishing to obtain the YMO multiphase transparent ceramic. This invention overcomes the difficulties in preparing large-size Y2O3-MgO nano-multiphase infrared transparent ceramics and the problem of component inhomogeneity by designing a non-aqueous solvent system and selecting a suitable gel system, and can produce complex-shaped / large-size, uniformly composed YMO nano-multiphase ceramics.

This invention discloses a biomass porous aerogel, its preparation method, and its applications. The preparation method includes the following steps: S1: Sugarcane bagasse is soaked in an alkaline solution, washed, and its pH value is adjusted to 7; after drying, it is carbonized in an inert gas atmosphere to obtain carbonized sugarcane bagasse fiber; S2: Ti3AlC2 is weighed and etched with LiF and HCl to obtain multilayer MXene material; the multilayer MXene material is sonicated in an inert gas atmosphere, centrifuged, and the supernatant is collected and freeze-dried to obtain MXene nanosheets; S3: MXene nanosheets and carbonized sugarcane bagasse fiber are mixed, hydroxyethyl cellulose is added, and after stirring and freezing, ice crystals are removed in a vacuum to obtain biomass porous aerogel. The biomass porous aerogel prepared by this invention has low density, semiconductor properties, significant reversible compression, and excellent mechanical properties, and also features low thermal conductivity, reusability, and low cost.

The invention relates to the field of massagers, and particularly discloses a half-rubber-coated massager and a preparation process thereof. A rubber-coated massager comprises a protective sleeve, an electronic component assembly and a sealing piece, the protective sleeve is provided with an installation cavity, an opening is formed in the cavity wall of the installation cavity, the electronic component assembly is installed in the installation cavity through the opening, and the sealing piece is used for sealing the opening; the electronic component assembly comprises a fixed shell and an electronic component installed in the fixed shell, and the outer side wall of the fixed shell is tightly attached to the cavity wall of the installation cavity. The half-rubber-coated massager has the advantages of being good in machining convenience, easy to assemble, long in service life and good in texture and vibration stability.