10results about How to "Cut off contact" patented technology

This invention relates to the field of polymer material synthesis technology, specifically to a modified PVB resin and its preparation method. The invention introduces a fluorinated acetal monoaldehyde derivative containing fluorine into the PVB resin. This derivative is mixed with n-butyraldehyde and glyoxal, thereby undergoing an acetalization reaction with the 1,3-o-diol structure of the PVB molecular chain, incorporating the fluorinated side link into the PVB molecular chain. Utilizing the high electronegativity and high C-F bond energy of fluorine atoms, it shields against the intrusion of external corrosive media, inhibits oxidative yellowing, and improves weather resistance. Furthermore, the invention introduces glyoxal as a crosslinking agent, containing dialdehyde groups, which can react between adjacent polyvinyl alcohol segments, causing slight crosslinking between the originally linear PVB resin segments, improving the resin's shielding performance, further reducing the intrusion of external corrosive media, and enhancing the stability of the PVB resin.

The present application relates to a kind of cylindrical electrode paste and its preparation method.A kind of cylindrical electrode paste, by mass parts, including 15-20 parts of anthracite main material, 25-40 parts of residual anode, 3-10 parts of graphite fragment, 25-35 parts of coke, 15-30 parts of organic binder, 6-18 parts of bio-based binder. Among them, organic binder includes medium temperature pitch, anthracene oil, beta resin. Among them, bio-based binder includes carbonized hydrophobic composite modified wood bamboo powder, sodium carboxymethyl cellulose. The carbonized hydrophobic composite modified wood bamboo powder of the present application and sodium carboxymethyl cellulose are compounded to form a bio-based binder, which cooperates with the organic binder to ensure the bonding strength, high temperature resistance and electrical conductivity of the cylindrical electrode paste, while realizing the green and low-carbon utilization of biomass, solving the problems of high temperature failure, moisture absorption and easy caking, and many pores of traditional bio-based binder, reducing the resistivity and production cost, and improving the structural density and use stability.

The utility model discloses a kind of suction screen supply integrated machines, it is related to metal 3D printing technical field, to solve the problem of powder processing in metal 3D printing relies on artificial.It includes powder suction feeding assembly, vibrating screen powder assembly, buffer feeding assembly, tail powder filtering assembly and equipment pipeline assembly;Equipment pipeline assembly connects each component, powder suction feeding assembly transports new powder, vibrating screen powder assembly screens new powder and recycled powder, buffer feeding assembly stores qualified powder and feeds 3D printing equipment, tail powder filtering assembly collects fine powder and realizes gas circulation, this integrated machine realizes powder processing full automation, without manual transfer, reduce labor cost and labor intensity, by pipeline transportation combination protective gas prevent powder contact air, damp, avoid the problem of delayed powder collection, powder mixing caused by manual operation, while eliminating personnel inhale harmful metal powder, safeguard health, applicable to metal 3D printing powder processing scene.

The application discloses a salicylaldehyde Schiff base corrosion inhibitor and a preparation and application method thereof. The corrosion inhibitor is salicylaldehyde condensation-1,3-propanediamine Schiff base 2. A nitrogen atom on a -RC=N- in a molecule and an oxygen atom adjacent to the nitrogen atom and having excess electrons form a stable coordination bond with a metal atom, and a dense adsorption protective film is formed on a low-carbon steel surface. In the application, anhydrous ethanol is used as a conventional reaction medium, and a high-purity target product can be obtained through one-step condensation at normal pressure and at medium temperature. The corrosion inhibitor does not contain heavy metals and strong toxicity groups, is green and environment-friendly, does not need special treatment after use, and further reduces application cost, and can be widely applied to corrosion protection scenes in an acidic environment of low-carbon steel.

This invention provides a connection device for a wooden column and a concrete foundation. A pre-embedded screw is embedded in the concrete foundation. A circular stone column base is positioned above the concrete foundation. A rubber moisture-proof and shock-absorbing pad is sandwiched between the circular stone column base and the wooden column. The wooden column has interconnected vertical pre-drilled holes and horizontal pre-drilled openings. The pre-embedded screw passes upwards through the circular stone column base, the rubber moisture-proof and shock-absorbing pad, and extends into the vertical pre-drilled hole of the wooden column. An eccentric wheel is assembled in the horizontal pre-drilled opening. An intercepting tooth spring is positioned on the outer circumference of the eccentric wheel to achieve unidirectional rotation and self-locking. The inner wall of the eccentric wheel cooperates with the pre-embedded screw. Rotating the eccentric wheel adjusts the installation height of the wooden column and achieves a tight connection. Grouting holes are opened on the wooden column or the circular stone column base to inject grout into the vertical pre-drilled holes for curing and sealing. This invention also provides a construction method for connecting a wooden column and a concrete foundation, using the connection device described above.

This utility model relates to the field of environmental monitoring auxiliary equipment technology, specifically disclosing an environmental monitoring sample storage and transportation device, including a storage and transportation box, a sealing cover, a locking structure, a connecting plate, and a pull rod. The storage and transportation box has two storage chambers inside, and the inner walls of both storage chambers are hinged with sealing covers. The sealing covers have cavities inside, and each cavity of the sealing cover is equipped with a locking structure. A connecting plate is fixedly connected to one outer surface of the storage and transportation box, and a pull rod is provided at the upper end of the connecting plate. The locking structure achieves automatic locking through the linkage of a sliding block, a guide slide rod, a locking tongue, and a spring. When the spring is in its normal state, it pushes the locking tongue to insert into the lock hole in the storage chamber wall, ensuring that the sealing cover will not be accidentally opened during transportation. The sliding switch design takes into account both convenient operation and anti-accidental touch function. It can be unlocked by simply sliding and automatically resets and locks after being released, solving the problem of unstable locking in traditional devices and improving the safety of sample transportation.

This application relates to a nano-copper composite sponge, its preparation method, and its application. The nano-copper composite sponge comprises a polyurethane sponge substrate and modified nano-copper; the modified nano-copper has a core-shell structure, with the core being elemental nano-copper and the shell containing copper hydroxyl groups bonded to the surface of the elemental nano-copper; the copper hydroxyl groups in the shell undergo a nucleophilic addition reaction with the isocyanate groups in the polyurethane sponge substrate to form covalently linked urethane bonds, thereby uniformly loading the modified nano-copper into the polyurethane sponge matrix. The solution provided in this application enables deep composite bonding of nano-copper with a sponge substrate, resulting in a long-lasting, safe, and broad-spectrum antibacterial and antiviral functional sponge material.

This application relates to a modular pumped storage power station support structure, belonging to the technical field of power equipment technology. It includes a base plate, and the vibration isolation mechanism comprises multiple connecting plates. A limiting shaft is fixedly connected to adjacent sides of two sets of connecting plates. A connecting base is fixedly connected to adjacent sides of the two sets of connecting plates. A support shaft is fixedly connected to adjacent sides of the connecting base. Multiple sliding pads are slidably connected to the outside of the support shaft. A guide limiting assembly is fixedly connected to adjacent sides of the base and the base plate. This application features a design where, during vibration, the ground causes the base to slide. As the base slides, guided by the bottom guide block and sliding block, the support shaft and sliding pads slide, thereby isolating the connection between the base plate and the base, thus absorbing the impact force generated by vibration and significantly improving the device's seismic resistance.

This utility model provides a capacitor support, belonging to the field of capacitors. It solves the problem of power loss or short circuits that may occur after long-term use due to capacitors contacting the housing. This utility model includes a top shell and a bottom shell that interlock, a control board installed in the top shell, and several capacitors located below the control board. The key feature is that a capacitor support is provided below the capacitors for supporting them, several outer slots for housing the capacitors are provided above the capacitor support, a reinforcing rib is provided between every two vertical outer slots, and a blocking part for isolating the capacitors is provided within the outer slots. A supporting capacitor frame and a raised part for preventing capacitors from contacting the bottom shell are provided below the capacitor support. An annular groove is formed on the bottom shell, and a limiting protrusion perpendicular to the ground of the bottom shell is provided within the annular groove. An annular limiting part is provided below the capacitor support.

The utility model relates to the technical field of overhauling tools, and discloses a special tool for overhauling a direct current deicing device, which comprises a handle and a connecting piece, a screwdriver head is arranged in the connecting piece, one side of the outer wall of the connecting piece is fixedly connected with a connecting rod, one side of the outer wall of the handle is fixedly connected with a connecting head, and the connecting head is fixedly connected with the handle. A connecting box is fixedly connected to one side of the outer wall of the connector, a positioning assembly is arranged in the connecting rod and used for adjusting the length of the screwdriver rod, a sliding assembly is arranged on one side of the outer wall of the connecting rod and used for assisting adjustment of the screwdriver rod, and the positioning assembly comprises a fixing disc. The outer wall of the fixing disc is fixedly connected to the interior of the connecting rod. According to the screwdriver, the length of the screwdriver rod can be conveniently adjusted, operation inconvenience caused by the fact that the length of the screwdriver is fixed is avoided, the universality and scene adaptability of the screwdriver are enhanced, and the screwdriver head can be conveniently replaced through the arrangement of the elastic gasket.