9results about How to "Avoid brittle fracture" patented technology

This utility model discloses a filter paperboard punching mechanism, relating to the field of filter paperboard processing technology. It includes a hydraulic punching main unit, with a punching worktable on the front side of the main unit. A lower punching die is fixedly connected to the upper front end of the worktable. A hydraulic telescopic rod is fixedly connected to the upper end of the main unit via a cantilever, positioned directly above the lower punching die. Through the use of elastic heating support pads and elastic pressure pads, the loose fiber structure of the filter paperboard is effectively prevented from being compacted, ensuring the air permeability and filtration efficiency of the filter paperboard. Simultaneously, the elastic heating support pads heat the filter paperboard when in contact with it, softening the fibers and preventing brittle breakage, thus improving the quality of the punching process. Furthermore, the elastic pressure pads further reduce the direct impact of the punching blade on the paperboard, resulting in a smoother punching edge, reducing burrs and fiber damage, and improving the overall quality of the product.

The utility model relates to optical fiber detection equipment technical field, especially optical fiber protection kit of inner pressure collection platform, the utility model discloses a bottom fixed interface, clamping groove, deposit mouth, detection flow channel, joint suite, linear flow channel, open mouth and protection cover, clamping groove is opened in bottom fixed interface top, deposit mouth is opened in the inner wall of clamping groove, and detection flow channel is penetrated in the bottom of bottom fixed interface, and joint suite is located in bottom fixed interface top, and the outer edge of joint suite is matched with the inner diameter of clamping groove, and linear flow channel is penetrated in the center axis of joint suite, and open mouth is opened in the bottom of linear flow channel, and the bottom of protection cover is placed in deposit mouth, and protection cover is the conical shape of upper narrow and lower wide, and protection cover is made of elastic plastic material, and joint suite is compressed and tight protection kit through open mouth, and the inner wall of sealed flow channel is close to the outer surface of optical fiber, forms pressure buffer area, when the container generates high pressure, and protection cover can carry out pressure buffering, and it is convenient for the data acquisition of optical fiber under various pressures.

This utility model relates to a stainless steel and tantalum composite insulator, comprising a stainless steel shell as a conductive cathode, an mounting position for a tantalum tube anode inside the stainless steel shell, an axially mounted tantalum tube anode inside the mounting position, and a microcrystalline glass layer forming an insulating medium at the connection between the tantalum tube anode and the stainless steel shell; the tantalum content of the tantalum tube anode is 99% or more by mass, with the remainder being impurities; the conductive cathode is either 316L or 2205 duplex stainless steel. By using the tantalum tube anode and stainless steel as the conductive cathode, and the microcrystalline glass forming the insulating layer, a matching seal can be achieved with the stainless steel and tantalum tube, ensuring electrical isolation. The tantalum tube anode can withstand boiling concentrated sulfuric acid, hydrochloric acid, and other strong acids, with a lifespan far exceeding that of traditional electrodes; ensuring the corrosion resistance of the stainless steel and tantalum composite insulator. The stainless steel cathode undergoes surface modification to avoid brittle fracture caused by long-term hydrogen evolution, increasing its conductive stability.

This utility model discloses a composite reinforced flexible polyethylene composite pipe, relating to the field of composite pipes. It includes an outer polyethylene pipe and an inner polyethylene pipe, with the inner pipe located inside the outer polyethylene pipe. Multiple skeleton structures are fixedly installed between the outer and inner polyethylene pipes, and connecting rings are provided between each skeleton structure. This utility model can form a radially uniformly distributed rigid support, effectively suppressing radial deformation of the pipe. The steel frame plates are movably connected by flexible connecting frames, allowing the steel frame plates to deform collaboratively when the pipe bends. While ensuring the strength of the rigid support, it also improves the bending deformation capacity of the composite pipe. It allows the skeleton to slip slightly axially when the pipe is under pressure, dispersing local stress and avoiding brittle fracture. While increasing the support rigidity of the steel frame plates, it also allows the composite pipe to undergo local torsion, enabling the polyethylene composite pipe to form a dynamic balance mechanism between controllable deformation and rigid support.

This invention discloses a high-heat-resistant ultrafine nano-zirconia composite material and its preparation method, belonging to the field of nanocomposite material technology. First, a high-density hydroxyl reaction site is introduced through an in-situ hydrolysis deposition process of zirconium chloride in an alkaline environment to obtain hydroxyl-rich nano-zirconia. Then, it undergoes a condensation reaction with a silane coupling agent containing double bonds to graft highly active double-bond functional groups onto the surface of inorganic particles, thus obtaining double-bond modified nano-zirconia. Subsequently, low-density polyethylene, antioxidants, and initiators are melt-blended with the double-bond modified nano-zirconia, and in-situ graft polymerization initiated by free radicals is used to obtain a high-heat-resistant ultrafine nano-zirconia composite material. Through the rigid skeleton synergistic mechanism constructed by chemical bonding, the thermal slip and creep behavior of polymer molecular chains at high temperatures is significantly restricted, thereby improving the heat resistance of the material while maintaining good mechanical strength.

The present disclosure provides a transparent elastic electronic skin of a wearable optoelectronic device and a preparation method thereof. The method comprises the following steps: obtaining an electrode patterned carrier; electrospinning an elastic polymer spinning solution on an electrode pattern layer of the electrode patterned carrier to obtain an elastic fiber membrane-electrode patterned carrier; immersing the elastic fiber membrane-electrode patterned carrier in water or an ethanol solution to obtain a conductive elastic fiber precursor membrane A; performing spin coating on the conductive elastic fiber precursor membrane A, and then drying and curing to obtain a conductive elastic fiber precursor membrane B; and performing selective wetting operation on the electrode pattern layer of the conductive elastic fiber precursor membrane B by using a liquid conductive metal to obtain the transparent elastic electronic skin of the wearable optoelectronic device. The transparent elastic electronic skin prepared by the method has high light transmittance, high mechanical elasticity, excellent air and moisture permeability, stable conductivity and suitable adhesion, so as to better meet the long-term dynamic high-precision wearing requirements.

The application discloses an anchoring system and method for a large-diameter fiber composite rod, and relates to the technical field of composite material anchoring, which comprises a large-diameter fiber rod, a stepped inner anchoring cylinder sleeved on an anchoring section of the large-diameter fiber rod, an outer locking sleeve threadedly connected to a small end of an inner diameter of the stepped inner anchoring cylinder, and a centering ring embedded between a large end of the inner diameter of the stepped inner anchoring cylinder and the large-diameter fiber rod; six evenly-distributed slits are formed in an end of the anchoring section of the large-diameter fiber rod along an axial direction, forming a six-petal bifurcated structure, a six-petal gradient hard alloy wedge block is embedded in the center of the six-petal bifurcated structure, and each side edge of the six-petal gradient hard alloy wedge block is correspondingly inserted between two adjacent petals of the large-diameter fiber rod. Through the synergistic innovation of structure, material and process, the application effectively solves the technical problems of stress concentration, low anchoring efficiency, easy damage of the rod body and poor environmental adaptability in the anchoring of the large-diameter fiber composite rod.

This invention discloses an adaptive graded pressure relief anti-impact anchor bolt based on a disaster-causing link blocking mechanism, relating to the field of deep coal mine roadway support and dynamic disaster prevention technology. It includes an anchor bolt body, with a tray fitted on the outer surface of the anchor bolt body, and an anti-loosening nut threaded onto the outer surface of the anchor bolt body. An adaptive graded pressure relief mechanism is provided between the tray and the anti-loosening nut. This adaptive graded pressure relief anti-impact anchor bolt, based on a disaster-causing link blocking mechanism, utilizes an adaptive graded pressure relief mechanism to form a primary constant resistance diameter expansion component using an interference fit between a variable-diameter thick-walled steel pipe and a high-strength metal cone head. Combined with a secondary honeycomb energy-absorbing component composed of a cylinder and honeycomb aluminum, a dual-modal mechanical response structure is formed. This achieves adaptive graded response to different disaster thresholds, improving the full life-cycle adaptability and failure resistance of the support structure, and solving the problem of existing anchor bolt structures being single-rigid and unable to distinguish between static high loads and dynamic strong impacts.

The utility model discloses a connection structure reinforced titanium-based noble metal oxide deep well anode, and relates to the technical field of deep well anodes, the connection structure reinforced titanium-based noble metal oxide deep well anode comprises a deep well anode main body, a gas guide pipeline, a cable and a reinforcing plate, a performance reinforcing mechanism is mounted among the deep well anode main body, the titanium-based insulating sleeve and the sealing plate; the gas-guide pipeline and the cable are fixedly connected to the inner side of the deep well anode main body; the reinforcing plates are detachably connected to the upper end and the lower end of the titanium-based insulating sleeve, one side of each reinforcing plate is slidably connected with a sliding plate, and a structure reinforcing mechanism is installed between each sliding plate and the titanium-based insulating sleeve. The device is wrapped by graphite, carbon fibers and polytetrafluoroethylene in a gradient mode, the inner layer transmits current in a high-current-guide mode, the middle layer maintains the stable structure in a current-equalizing and pressure-resisting mode, the outer layer is closed, anti-corrosion and wear-resisting modes are achieved, and meanwhile the sliding plate and the toothed plate are dynamically meshed and combined with elastic reset to disperse formation pressure and restrain deformation. The comprehensive performance of efficient conduction, impact resistance and corrosion resistance of the anode is improved.