12results about How to "Stop breaking" patented technology

The present invention provides a composite stabilizer for PVC, characterized in that it comprises the following components by mass fraction: 35-50% of modified titanium dioxide, 15-25% of organic acid salt intercalated zinc-aluminum-lanthanum hydrotalcite, and 25-40% of tetrakis(3-mercaptopropionic acid) pentaerythritol ester. The modified titanium dioxide is TiO2 / CQDs; the organic acid salt intercalated zinc-aluminum-lanthanum hydrotalcite is itaconate-ZnAlLa-LDHs. The composite stabilizer is used in PVC products to improve the stability, mechanical properties and flame retardancy of the PVC products.

The utility model belongs to the technical field of liquid coupler disassembly, and particularly relates to a device for quickly disassembling a liquid coupler, which comprises a sliding rod, a limiting plate is fixedly arranged at the front end of the sliding rod, a connecting column is in threaded connection with the tail end of the sliding rod, and the connecting column is in threaded connection with the liquid coupler. A balancing weight is arranged on the sliding rod in a sliding mode, two handles are symmetrically arranged on the balancing weight, traction ropes are fixedly connected to the handles, and the traction ropes are manually pulled to drive the balancing weight to slide on the sliding rod. When the hydraulic coupler dismounting device is used, the sliding rod is connected with the hydraulic coupler through the connecting column, then the counterweight block is pulled through the pulling rope to impact the limiting plate, and the sliding rod drags the hydraulic coupler out little by little under the action of inertia, so that the dismounting speed of the hydraulic coupler is increased, and the risks of breakage and deformation of the lead screw are completely eradicated.

The invention relates to the technical field of textiles, in particular to denim with ozone fastness resistance and a preparation method thereof. The preparation method comprises the following steps: S1, uniformly mixing an amino-terminated hyperbranched polymer and deionized water, heating to 70-80 DEG C, dropwise adding a mixed solution of a cationic modifier and deionized water within 1-2 hours, carrying out heat preservation reaction for 3-5 hours, and carrying out precipitation separation and drying to obtain an ozone-resistant color fastness improver; s2, uniformly mixing an ozone-resistant color fastness improver and deionized water to obtain a finishing solution; s3, immersing the denim into the finishing liquid, heating to 50-60 DEG C, treating for 30-50 minutes, taking out, dehydrating, and baking for 3-5 minutes at 100-150 DEG C to obtain the denim with ozone fastness, the denim not only has excellent ozone resistance, but also has excellent ultraviolet protection effect and antibacterial effect, and the service life of the denim is prolonged.

The invention relates to the technical field of nano polyurethane films, and discloses a nano polyurethane film with enhanced performance, which is prepared from the following components in percentage by weight: 40% of graphene, 40% of polyurethane resin, 10% of nano material, 10% of plasticizer, 10% of cross-linking agent, 10% of solvent and 10% of other additives. The proportion of the plasticizer, the cross-linking agent, the solvent and the other additives is 10%, the graphene is composed of carbon atoms, the basic element of the composition is carbon, by adding the graphene, the mechanical strength, the electrical conductivity, the thermal conductivity and the like of the film can be remarkably improved, the functionality of the film can be improved, such as gas shielding, ultraviolet protection, electromagnetic shielding and the like, and the film can be widely applied to the field of film manufacturing. According to the invention, slippage and fracture of a polyurethane chain can be effectively prevented through the nanoparticles, so that the tensile resistance, compression resistance and impact resistance of the film are improved, and the performance of the nano polyurethane film can be enhanced.

The utility model relates to PVC pipe technical field discloses a PVC pipe with reinforcing rib structure, including inner tube, the inside fixedly connected with six groups of fixed seat of inner tube, six groups of inner groove are seted up in the inside of six groups of fixed seat, six groups of inner groove are provided with six groups of stainless steel bar in the inside, the outside of inner tube is provided with outer tube, the outside fixedly connected with multiple groups of convex rib of outer tube, when using, through setting up stainless steel bar in the inside of inner groove, the tensile strength of stainless steel bar is far higher than PVC pipe, and stainless steel bar sets up along the pipe length direction, equivalent to forming longitudinal reinforcing framework in the inside of PVC pipe, when the pipe material is bent, stainless steel bar will directly bear the tensile stress, thereby prevent PVC pipe from breaking due to excessive stretching, through the outside fixedly connected with multiple groups of convex rib of outer tube, when the pipe material is subjected to lateral pressure, convex rib will contact external force first, and the pressure is transmitted to the whole outer tube wall, and then avoid local stress concentration and lead to pipe wall indentation or rupture.

This utility model relates to the field of slitting machine technology and discloses a slitting machine for aluminum foil production with waste recycling function. It includes a slitting machine base, inside which a recycling component is installed. When it is necessary to remove waste material wrapped around the surface of the recycling rod, a limiting ring is removed outwards, and then a bidirectional threaded rod is rotated through a limiting groove. Symmetrically arranged threaded sliders move inwards along the surface of the bidirectional threaded rod simultaneously, while also sliding along a guide groove. The threaded sliders pull a fixed rod, which in turn pulls a drive connecting rod, which in turn pulls a second fixed rod. This causes the second fixed rod to drive a connecting block and a recycling rod. The recycling rod then drives a T-shaped slider to slide downwards along a T-shaped groove, thereby changing the distance between the recycling rod and the rotating rod. This allows the waste material wrapped around the recycling rod to loosen from its tight state, facilitating its removal for reuse and improving waste recycling efficiency.

The invention provides a crosslinked polyethylene composition without pits on a rotational molding surface and a preparation method of the crosslinked polyethylene composition, and belongs to the technical field of high polymer materials. The crosslinked polyethylene composition without pits on the rotational molding surface is prepared from the following components in parts by weight: 100 parts of polyethylene resin, 0.1 to 2 parts of high-temperature organic peroxide, 0.5 to 3 parts of crosslinking aid, 0.05 to 0.5 part of nitroso ether and 0.1 to 1 part of antioxidant. The nitroso ether compound is introduced, high-activity nitroxide free radicals generated by the nitroso ether compound at a high temperature are used for quenching primary free radicals generated by decomposition of peroxide, generation of low-boiling-point byproducts is inhibited, and a rolling part product without pits in the surface of a rolling part can be obtained under the rotational molding condition of high temperature or rapid temperature rise.

The invention relates to the technical field of retarders for well cementation, in particular to a retarder for high-temperature-resistant and high-strength cement paste and a preparation method of the retarder for the high-temperature-resistant and high-strength cement paste. The quinary copolymer retarder is prepared from 2-acrylamido-2-methylpropanesulfonic acid, acrylic acid sodium p-styrenesulfonate, vinyl pyrrolidone and acrylic acid phosphate. The quinary copolymer retarder is prepared by the following steps: adding the quinary copolymer retarder, sodium borate and sodium tripolyphosphate into water, uniformly mixing, and carrying out chelation reaction. The retarder for the high-temperature-resistant and high-strength cement paste can obviously prolong the thickening time of the cement paste under high-temperature and high-pressure conditions, can also enable the cement paste to keep good sedimentation stability, and solves the problem that the existing retarder easily causes poor high-temperature sedimentation stability of the cement paste.

This application relates to the field of industrial ventilation equipment, specifically disclosing an industrial ceiling fan blade assembly and connection structure, including a blade mounting hub and multiple blade bodies mounted on the outer surface of the blade mounting hub. Multiple blade connecting seats are fixedly connected to the upper surface of the blade mounting hub, and a reinforcing connection component is fixedly connected to the upper surface of each blade connecting seat. A connector is fixedly connected to one end of each blade body. This industrial ceiling fan blade assembly and connection structure significantly improves connection strength through a triple connection of mechanical insertion, bolt fastening, and reinforcing components. Mechanical locking is achieved by inserting a long rod with an opening into a positioning groove. The bolt connecting lug is fastened to the side sliding frame with bolts. The reinforcing bolts of the reinforcing connection component further enhance the integrity of the blade body and the blade connecting seat. Compared to traditional single bolt connections, this structure increases tensile strength and shear strength, enabling it to withstand the centrifugal force of high-speed rotation of the industrial ceiling fan and preventing loosening or breakage.

The application discloses a layout wiring method, device and equipment of a special-shaped bending PCB and a medium, relates to the technical field of hardware circuit design, and aims at solving the problem that the existing general PCB layout wiring method cannot meet the high-precision, high-reliability and long-service-life use requirements of an inkjet printing device with a special-shaped bending working condition. The method comprises the following steps: dividing the special-shaped bending PCB into a rigid fixing area, a flexible bending transition area and a limit bending core area according to the bending radius; arranging devices in the rigid fixing area and the flexible bending transition area; adopting different wiring rules to wire each area respectively to obtain a wired special-shaped bending PCB; and performing copper laying, via arrangement and round corner processing on the wired special-shaped bending PCB to complete the layout wiring of the special-shaped bending PCB. The layout wiring method of the special-shaped bending PCB is used to improve the printing precision, reliability and service life of the inkjet printing device with the special-shaped bending working condition.

The utility model discloses an exhaust valve for an engine. The exhaust valve comprises a valve body and an execution piece installed on one side of the valve body. The execution piece is connected with a valve clack shaft on the valve body through an arranged transmission assembly. The transmission assembly comprises a first connecting plate connected with a driving shaft of the execution piece and a second connecting plate connected with the valve clack shaft. The first connecting plate is connected with a driving shaft of the execution piece through a notch formed in the first connecting plate, and the second connecting plate is connected with the valve clack shaft through a polygonal hole formed in the second connecting plate. The notch is connected with the driving shaft of the execution piece, and the polygonal hole is connected with the valve clack shaft, so that the connection between the transmission assembly and the execution piece and the connection between the transmission assembly and the valve clack are more accurate and stable, and the working performance of the exhaust valve is improved; the structure is simple, and manufacturing and mounting are easy; therefore, the phenomenon that the valve clack shaft or a driving shaft of the execution piece is prone to breakage in the using process due to the fact that the two ends of the transmission assembly are welded to the execution piece and the valve clack shaft is avoided.

The invention belongs to the technical field of magnetic metal material preparation, and particularly relates to an iron-based amorphous alloy with low coercive force, high ductility and toughness and strong forming ability and a preparation method. The iron-based amorphous alloy has a general formula of Fe B C < c > S < d > P < e > M < f >, wherein M is V; 0 < = f < = 0.8; d > e; 0.13 < = b / a < = 0.17; d + e < = c; or 4.0 < = c + d + e < = 5.0. The saturation flux density of the iron-based amorphous alloy is larger than or equal to 1.66 T or the magnetic induction intensity B800 under the condition of 800 A / m is larger than or equal to 1.65 T, the coercive force after annealing is smaller than or equal to 1.0 A / m, and the iron-based amorphous alloy has high amorphous forming ability and bending toughness. The iron-based amorphous alloy provided by the invention has high saturation flux density, low coercive force and low iron loss. The iron-based amorphous alloy does not contain precious metal elements, easy-to-oxidize elements and high-melting-point elements, is low in cost, has low requirements on industrial equipment and is beneficial to industrial production.