12results about How to "Increase mechanical bite force" patented technology

This invention discloses a large-area photo-chargeable aqueous zinc-ion battery, its preparation method, and its application. The method includes the following steps: Two pieces of glass with a transparent conductive layer coated on one side are taken. A positive electrode material is placed on the coated layer of one of the glass pieces. A glass fiber separator and a negative electrode material are sequentially covered on top of the positive electrode material. The other glass piece is then placed on top of the negative electrode material with its coated layer facing down. The positions of the two glass pieces are adjusted so that they are stacked alternately. Pressure is applied to the resulting stacked structure, and three sides are sealed with hot melt adhesive. After the hot melt adhesive has cured, electrolyte is injected into the unsealed side, and then this side is sealed again. The negative electrode of a diode is connected to the glass on the positive electrode side of the battery, and the positive electrode of the diode is connected to the glass on the negative electrode side of the battery, thus obtaining a large-area photo-chargeable aqueous zinc-ion battery. The battery of this invention has the advantages of high light utilization, stable charging, and low loss.

A kind of UHPFRC combined steel bridge deck panel using burl cold connection key, comprising the following construction steps: S1, prefabricated cold connection key;S2, using high-pressure air gun to carry out dust removal, cleaning to steel bridge deck top plate;S3, set cold connection key on steel bridge deck top plate, the longitudinal distance between adjacent cold connection key is 30-50cm, the transverse distance is 30-50cm;S4, pours the layer of ultra-high performance cement-based composite material on steel bridge deck top plate and cold connection key;The combined steel bridge deck panel of the application is simple in structure, and the force is clear, burl cold connection key is used in steel-mix combined structure, increases the contact area of connection key and concrete, can significantly reduce the stress concentration between connection key and concrete, while connection key has 360 degrees universal shear resistance, and shear resistance adaptability is good, and has good tensile performance, reliable connection and other advantages, is used with copolymerized formaldehyde fiber or hybrid fiber UHPFRC, can significantly improve the combined stiffness of combined structure, improves the fatigue performance of steel bridge deck panel.

This application discloses a method for printing copper-based liquid cooling components via grafting, and the copper-based liquid cooling component itself. The method includes: providing a base plate; machining positioning grooves on the base plate according to its external dimensions; etching the inner walls of the positioning grooves; sandblasting the upper surface of the base plate; embedding the sandblasted base plate into the positioning grooves; selectively laser melting the base plate; sequentially printing the bonding surface layer and the heat dissipation fin body layer using different printing strategies to obtain a blank; removing the blank from the positioning grooves and polishing it to obtain the copper-based liquid cooling component. This method solves the technical problems of base plate warping, low internal density, loose structure, and poor bonding surface strength in traditional laser additive manufacturing of copper-based liquid cooling components, achieving stable manufacturing of high-precision, high-performance copper-based liquid cooling components.

The utility model discloses a prefabricated assembled bridge pier grouting joint structure which comprises a bearing platform and a prefabricated pier column section, reserved through holes which are longitudinally communicated are formed in the bearing platform and the prefabricated pier column section, reinforcement cages are arranged in the reserved through holes, a prefabricated groove hole matched with the prefabricated pier column section is formed in the top end of the bearing platform, and the prefabricated groove hole is communicated with the prefabricated pier column section. Positioning connection structures which are embedded with each other are prefabricated at the joints of every two adjacent prefabricated pier column sections; the positioning conical grooves in the two ends of the prefabricated pier column section and the conical surface of the pressing connecting conical head are designed in a self-locking mode, the pressing connecting conical head is arranged to be a rectangular pyramid, instant guiding and positioning of hoisting of the prefabricated pier column section are achieved, the time consumed for adjusting the reserved through hole is shortened, the pressing connecting conical head is pressed to generate radial separation, and the positioning accuracy of the prefabricated pier column section is improved. The shear bearing capacity of the joint is improved; the connecting spiral convex ribs are arranged on the inner wall of the reserved through hole to form a continuous thread-shaped interface, so that the mechanical meshing force between the grouting material and the hole wall is improved, and the interface is prevented from sliding.

The invention relates to the technical field of high-pressure grouting, and discloses a bottom plate high-pressure jet grouting device which comprises a grouting pipe and a self-rotating spray head and further comprises a connecting mechanism and a variable-diameter cutting mechanism, the variable-diameter cutting mechanism comprises an inner sleeve rotating synchronously with the self-rotating spray head, and the inner sleeve is sleeved with an outer sleeve; a plurality of equidistant cutting main cutters are hinged to the outer part of the outer sleeve, and the plurality of cutting main cutters can realize radial external expansion and internal shrinkage along with the reciprocating sliding of the outer sleeve. By means of the actions that the grouting pipe and the self-rotating spray head rotate in the same direction at the differential speed and gradually retreat from a drill hole, the multiple cutting main cutters rotate for cutting, the cutting radius changes in a reciprocating mode, irregular hole walls are cut out, follow-up high-pressure grout and a rock stratum are promoted to be meshed in a staggered mode, and an irregular consolidation body is formed; through staggered adhesion between the edge of the irregular consolidation body and the rock stratum, the mechanical occlusal force of the consolidation body and the rock stratum can be greatly enhanced, so that the stress change of the floor rock stratum is effectively resisted.

This invention provides a high-strength, anti-segregation self-compacting concrete, its preparation method, and its application, belonging to the field of tunnel and underground engineering technology. This invention utilizes steel fibers to prevent aggregate settlement, while polymer fibers tend to distribute in the upper slurry. Simultaneously, the surface structure of both steel and polymer fibers increases the mechanical interlocking force between the fibers and the slurry, effectively resisting the settling tendency of fibers and coarse aggregates. A cationic viscosity modifier imparts excellent thixotropic properties to the concrete, effectively locking in aggregates and moisture, preventing segregation, and achieving high flowability and high stability. Water glass reduces the impact of hardening shrinkage on concrete performance, improving its crack resistance and durability. Water glass also enhances the compatibility of aggregates with other raw materials. The "discontinuous gradation" strategy reduces the mechanical interlocking force of particles during mixing, causing a sharp drop in resistance during concrete flow, and then maintaining uniformity through frictional self-locking when stationary, thus improving its stability.

This utility model discloses a high-brightness Micro-LED lamp bead, comprising: a base, an LED chip substrate, a light-transmitting component, and a conductive component. The LED chip substrate is disposed within the inner cavity of the base; the light-transmitting component is disposed on the top of the base and serves to protect the LED chip substrate from light transmission; the conductive component serves to conduct electricity to the LED chip substrate and includes multiple pads disposed at the positive and negative ends of the LED chip substrate; multiple sets of pins are symmetrically disposed at the bottom of the base, and locking parts for connecting the pads are provided at the bottom of the pins; this utility model uses locking parts at the connection between the pins and the pads to fix the pins and pads. Compared with the direct planar contact solder bonding of the pins and pads, the locking parts of this design increase the welding surface area between the pins and the pads, allowing the solder to wet the interface between the pins and the pads, thereby improving the mechanical bonding force of the pins and reducing the possibility of the solder joint falling off due to vibration.

This application relates to the field of building materials, specifically disclosing a high-ductility basalt fiber concrete and its preparation method, comprising cementitious materials, fiber mixtures, water, and admixtures. The fiber mixture includes polyethylene fibers and modified basalt fibers. The modified basalt fibers are prepared by the following method: basalt fibers are soaked in a calcium solution, and carbonates are added dropwise under alkaline conditions for in-situ mineralization to generate nano-calcium carbonate whiskers. These whiskers are then deposited by electrophoresis in a first suspension and then in a second suspension to obtain modified basalt fibers. The preparation method includes the following steps: mixing the cementitious materials and the fiber mixture to obtain a preliminary mixture; mixing water and admixtures and adding the preliminary mixture; stirring to obtain high-ductility basalt fiber concrete. This application has the characteristics of improving the interfacial bonding strength between basalt fibers and the concrete matrix, resulting in a high-performance concrete material with better ductility and strength.

The invention relates to the technical field of preparation of foam glass, in particular to high-strength and low-heat-conductivity foam glass and a preparation method thereof. The problems that existing foam glass is low in strength and high in heat conductivity are solved. According to the foam glass, waste glass and glass fibers are used as raw materials, silicon carbide is used as a foaming agent, borax is used as a fluxing agent, trisodium phosphate dodecahydrate is used as a foam stabilizer, modified polyurethane and silicon dioxide aerogel are used for modifying the foam glass, the porous structure advantage of the aerogel enables heat to be transmitted along a slender framework of the aerogel, the heat transfer flux is low, and the foam glass has good heat transfer performance. The heat loss in the transmission path is large, and due to the existence of the aerogel particles, the solid-phase transmission path of heat in the foam glass is more complex, the CF3 group low surface energy reduces the heat convection path and inhibits the solid-phase heat conduction, so that the foam glass has a lower heat conductivity coefficient, and the mechanical strength of the material is improved. Therefore, the durability and thermal insulation performance of the foam glass are enhanced.

This utility model discloses a cable guide hole protective gasket with an embedded nut, comprising a gasket body composed of a first half-gasket and a second half-gasket. The first half-gasket has multiple fixing holes integrally formed on one side, each containing a nut. The second half-gasket has multiple mounting holes integrally formed at its top and bottom, corresponding one-to-one with the fixing holes and penetrating the second half-gasket. Bolts are inserted into these mounting holes, and the bolts are threadedly connected to the nuts. This utility model not only effectively prevents the cable from rubbing against the nut during operation, reducing the risk of cable wear and breakage and significantly improving safety, but also eliminates the need for additional positioning operations, significantly improving installation efficiency, facilitating on-site maintenance and replacement, reducing labor costs, and enhancing the mechanical interlocking force between the nut and the composite material, preventing rotation or detachment, and improving the stability of the nut installation.

The invention provides a biologically active component modified veneer based on a molecular nest technology and a production process thereof, and the production process comprises the following steps: mixing eucalyptus wood shavings and an active modified adhesive, paving, pre-pressing, and hot-pressing and curing to obtain an active plain board; the preparation method comprises the following steps: pretreating decorative base paper by using a folium artemisiae argyi extract, impregnating by using an impregnating solution containing modified molecular nests, and drying to obtain active impregnated paper; and spraying an interface treating agent on the surface of the active plain board, drying with hot air, covering the active impregnated paper on the active plain board, and carrying out hot pressing, cooling and edge cutting to obtain the product. The invention provides a veneer modified by bioactive components based on a molecular nest technology. The mechanical property, antibacterial durability and fragrance retention time of the veneer are improved; the interface bonding force between the adhesive and the plant fibers is improved, the problem that active ingredients break out and release too early is solved, and the interface bonding strength between the plain board and the impregnated paper is enhanced.

This invention relates to the field of concrete reinforcing fiber technology, and particularly to a bamboo powder-reinforced polypropylene composite fiber for concrete crack resistance and its preparation method. Through an integrated process of surface chemical modification (introducing bifunctional groups), melt grafting (forming chemical anchoring), and multi-stage stretching (forming a rough structure in situ), the strong interfacial bond between bamboo powder and polypropylene and the simultaneous construction of fiber surface functions are fundamentally achieved. This method not only solves the global problem of bamboo powder easily detaching from the polymer matrix, but also ensures good rheological properties of the melt due to the minimal damage to the polypropylene backbone caused by chemical grafting. This makes it possible to subsequently prepare fine denier fibers (with diameters as low as 30 μm) through high-ratio multi-stage stretching, overcoming the technical bottleneck of traditional modification methods that struggle to balance strong interfacial bonding and high spinnability.