31results about How to "Reduce internal friction" patented technology

The invention belongs to the technical field of civil engineering materials, and provides an early-strength high-fluidity geopolymer grouting material and a preparation method thereof. The method comprises the following steps: firstly, carrying out heat treatment and chemical regulation on fly ash and granulated blast furnace slag to generate a pre-reaction phase with high reaction activity, and improving the alkali excitation reaction efficiency; then, by preparing a lubricating particle dispersion liquid and utilizing the synergistic effect of a silane coupling agent and interface lubricating particles, the uniform dispersity of the particles is enhanced; by adding the ionic liquid and the functionalized acylamino polymer, the dissolution and activation of the aluminosilicate are accelerated by utilizing the high polarity, the ion shielding effect and the dissolution enhancing performance of the ionic liquid; meanwhile, the amido polymer inhibits particle aggregation and stabilizes the particle dispersion state through the adsorption effect, the amido polymer and the amido polymer cooperate to form a lubricating layer in the slurry, reduce the viscosity of the slurry and improve the fluidity, and the early strength of the material is further improved by accelerating the generation of a gel phase.

The invention discloses concrete with high salt corrosion resistance and a preparation method of the concrete. The concrete is prepared from 300-400 kg / m < 3 > of cement, 50-150 kg / m < 3 > of slag powder, 1000-1200 kg / m < 3 > of gravel, 650-800 kg / m < 3 > of machine-made sand, 0.5-2 kg / m < 3 > of a modified polycarboxylic acid water reducing agent, 0.005-0.01 kg / m < 3 > of an air entraining agent, 0.05-0.1 kg / m < 3 > of an ion chelating agent, 0.05-0.1 kg / m < 3 > of polyacrylamide, 0.01-0.05 kg / m < 3 > of sodium methyl silicate, 0.1-0.5 kg / m < 3 > of multiwalled carbon nanotube dispersion liquid and 140-160 kg / m < 3 > of water. The preparation method comprises the following steps: stirring and mixing the modified polycarboxylate superplasticizer, the air entraining agent, the ion chelating agent, the polyacrylamide, the sodium methyl silicate and part of the water for mixing to obtain an admixture mixed solution; sequentially putting broken stones, cement, machine-made sand, the admixture mixed solution, the multi-walled carbon nanotube dispersion liquid and the rest of mixing water into a stirrer, and stirring for 2-3 minutes, so as to obtain the concrete with high salt corrosion resistance. The concrete has high salt corrosion resistance in a complex service environment, the service life of a concrete structure is effectively prolonged, and a reliable guarantee is provided for infrastructure construction.

The invention discloses a permanent magnet spherical driver based on a separated winding, which realizes inclined motion of a rotor through an electromagnetic relation structure formed by an upper magnetic pole, a lower magnetic pole and an inclined winding. The rotating motion of the rotor is realized through an electromagnetic relation structure formed by the middle-layer magnetic poles and the spinning windings; meanwhile, through the arrangement of a first magnetism isolating ring and a second magnetism isolating ring, magnetic fields among the upper-layer magnetic pole, the middle-layer magnetic pole and the lower-layer magnetic pole do not interfere with one another, and multi-degree-of-freedom decoupling tilting motion and rotating motion are achieved; moreover, through the design of the radially bent end windings, the effective parts of the windings, which can act with the permanent magnetic field to generate torque, are closer to the corresponding magnetic poles, and the rest ineffective parts, which do not act with the permanent magnetic field to generate torque, are far away from the magnetic poles. Therefore, magnetic field utilization rate reduction caused by interaction between an excitation magnetic field generated after the invalid parts are electrified and a magnetic field generated by a rotor permanent magnet pole is prevented, torque internal friction is reduced, and output torque and working efficiency are improved.

The invention relates to the technical field of adhesives, in particular to high-strength and high-toughness epoxy glue and a preparation method thereof.The high-strength and high-toughness epoxy glue comprises a component A and a component B. The component A and the component B are used in cooperation according to the mass ratio of 1: 1, and the component A comprises, by mass, 80-100 parts of epoxy resin, 10-20 parts of reactive diluent, 30-50 parts of liquid nitrile rubber buna 40 and 40-60 parts of filler; the component B is prepared from the following components in parts by mass: 40 to 60 parts of methylhexahydroanhydride, 0.4 to 0.6 part of PEG (polyethylene glycol)-carboxyl pyrazole copolymer and 40 to 60 parts of filler. According to the invention, the viscosity of the system is reduced by the PEG-carboxyl pyrazole copolymer, so that the epoxy glue is easier to process, coat and level in the use process, the viscosity reduction is beneficial to spreading of a material on a larger surface area, construction is convenient, the material can form a uniform thin-layer structure with a cross-linked network, and the strength and the toughness are improved.

The invention relates to the technical field of drag reducer preparation, and in particular to a method for producing a salt-resistant drag reducer for oil well fracturing. S1.1, weighing the following raw materials in parts by weight: 27-32 parts by weight of a modified polymer, 0.6-1.1 parts by weight of a cross-linking agent, 0.1-0.3 parts by weight of an antioxidant, 2-6 parts by weight of an acetate buffer, 0.6-0.8 parts by weight of a surfactant, 0.02-0.04 parts by weight of a benzalkonium chloride biocide, and 0.2-0.4 parts by weight of a bentonite suspending agent; wherein, the modified The polymer is prepared by copolymerization of acrylamide, crotonic acid and acrylic acid phosphonate in a mass ratio of 7:2 to 4:10 to 13; S1.2, adding the above raw materials and continuously stirring to obtain a salt-resistant drag reducer; crotonic acid, acrylic acid phosphonate and acrylamide are used to prepare a modified polymer, and carboxyl and phosphonic acid groups are introduced into the polyacrylamide, thereby enhancing the water solubility of the polymer and, at the same time, improving the coordination ability of the modified polymer with the zirconium ions in the cross-linking agent, thereby improving the salt resistance and drag reduction effect of the modified polymer.

The invention relates to a mineral wool sandwich board PIR edge sealing production system and production process. The mineral wool sandwich board PIR edge sealing production system comprises a white material storage tank, a pentane storage tank, an on-line cutting precision mixer, a transition tank, a black material storage tank and a mixing head. Due to the fact that the using amount of edge sealing materials is small, the mixing effect of polyester and pentane is affected, and edge sealing sandwich boards with high fire resistance cannot be manufactured, the system cuts, extrudes, impacts and disperses white materials and pentane in the mixer by increasing flow feeding, and the mixing effect is improved. Due to the fact that the premixing white material amount consumed by the mixing head is small, discharging of the mixing head cannot be interrupted, and the output of the premixing white material is different from the premixing white material amount consumed by the mixing head, in order to achieve flow balance of the premixing white material and the premixing white material amount consumed by the mixing head, flow balance is achieved by increasing the premixing white material flow + intermittent feeding = small flow of the mixing head + continuous discharging. The middle transfer transition device caches the premixed white material to solve the problem of uninterrupted discharging of the mixing head so as to achieve continuous production, and the major problem that online mixing foaming cannot be achieved due to small flow of polyester and pentane is successfully solved.

A rubber composite material based on high-butadiene-content iron-based butadiene-pentadiene rubber, and its preparation method and application. The present invention belongs to the field of rubber materials and their preparation. The purpose of the present invention is to solve the technical problem that the existing modified composite rubber cannot balance the "devil's triangle" performance of rubber. The material of the present invention is prepared from olefin rubber, reinforcing filler, plasticizer, zinc oxide, stearic acid, sulfur, silane coupling agent, accelerator and antioxidant, and the olefin rubber is mixed with natural rubber, solution-polymerized styrene-butadiene rubber, butadiene rubber and iron-based butadiene-pentadiene rubber. The molecular weight of the iron-based butadiene-pentadiene rubber is 50-80w, the molecular weight distribution is 1.5-2.5, the sum of the vinyl and propylene side group contents is 30-50%, and the molar ratio of monomer butadiene to isoprene during the preparation process is (1.5-9): 1. The material of the present invention is used as a tire tread rubber. The present invention effectively balances the "devil's triangle" performance of the rubber material.

The invention relates to the technical field of powder metallurgy, and discloses a forming agent and a preparation method thereof, and a hard alloy and a preparation method thereof. The forming agent is prepared from, by mass, 45%-55% of paraffin, 25%-35% of polyethylene glycol, 12%-18% of stearic acid and 5%-8% of the sum of fatty alcohol-polyoxyethylene ether and oleic acid, and the mass ratio of the fatty alcohol-polyoxyethylene ether to the oleic acid is (2-6): 1. The forming agent improves the forming process and improves the quality of the prepared hard alloy.

The application relates to the technical field of high-molecular heat-conducting composite materials, and particularly discloses a low-thermal-resistance grafted modified polyethylene material and a preparation method thereof.The low-thermal-resistance grafted modified polyethylene material comprises polyethylene resin, alpha-olefin ethylene copolymer, polar grafting monomer, initiator, modified sheet-shaped heat-conducting filler, spherical heat-conducting filler, composite antioxidant and functional additive.The modified sheet-shaped heat-conducting filler and the functional additive are compounded and added into a polyethylene matrix through a specific formula, the components interact with each other, the filler agglomeration is effectively inhibited, and the interface combination is strengthened, so that the heat transfer efficiency in the resin is significantly improved under the premise of not excessively increasing the filler amount, the obtained grafted modified polyethylene material successfully breaks through the bottleneck that traditional heat-conducting polyethylene is difficult to simultaneously consider heat conduction, mechanics and processing performance, and finally exhibits the comprehensive characteristics of high heat conductivity, excellent mechanical strength and good melt flowability.

The invention belongs to the technical field of talcum powder. The invention provides high-dispersity talcum powder and a preparation method thereof.The preparation method comprises the following steps that S1, zirconium oxide beads are adopted as a grinding medium, the grinding medium and grinding materials are added into a charging barrel of a vertical sand mill, the grinding materials comprise talcum powder raw materials, carboxymethyl cellulose graft copolymers and sodium hexametaphosphate, the rotating speed is adjusted to be 9.5 m / s, the grinding time is 3-12 h, and a mixture is obtained; grinding to obtain ground powder; s2, adding an aqueous dispersion into the ground powder obtained in the S1, and adjusting the rotating speed to 9.5 m / s and the grinding time to 8-36 hours to obtain ground slurry; and S3, drying and crushing the ground slurry obtained in the S1 to obtain the high-dispersity talcum powder. The carboxymethyl cellulose grafted copolymer is added into the grinding material, so that the viscosity of grinding slurry is reduced, and meanwhile, the dispersity of talcum powder particles is improved.

The invention relates to the technical field of ultralow-temperature fluid medium matching, in particular to an ultralow-temperature liquid hydrogen rotating joint with an elastic locking stabilizing mechanism, which comprises a mounting flange, an inner ring and an outer ring. According to the ultralow-temperature liquid hydrogen rotating joint with the elastic locking and stabilizing mechanism, an annular adjusting cover internally provided with an internal extrusion piston is fixedly assembled between the inner ring and the second clamping sleeve joint, a lubricating medium can be automatically supplemented to a steel ball transmission surface according to internal pressure, and internal friction force is greatly reduced; the pressure in the conveying cavity can be adjusted while a lubricating medium is supplemented to the steel ball transmission cavity through the internal extrusion piston, so that the impact on the connecting end of the joint is reduced, and the safety of the joint is improved; lubricating media in the annular adjusting cover are driven through internal pressure, the lubricating media are forcibly pressed into small gaps of mechanical parts in a high-pressure lubricating mode, and the lubricating effect and the sealing effect can be guaranteed.

The invention provides a thermosetting sheath material for a nuclear power plant cable with a life span of 80 years. The thermosetting sheath material comprises the following components by weight: 100 parts of EVA; 20-30 parts of maleic anhydride grafted poly-4-methyl-1-pentene; 3-5 parts of a vulcanizing agent; 1-3 parts of a vulcanizing accelerator; 2-4 parts of an activator; 4-8 parts of a softener; 5-10 parts of an antioxidant; 2-6 parts of a reinforcing agent; 150-180 parts of an inorganic flame retardant; and 1-2 parts of a light stabilizer. The thermosetting sheath material for a nuclear power plant cable with a life span of 80 years of the invention improves the heat decomposition resistance and chemical resistance of EVA as a main material by combining EVA and maleic anhydride grafted poly-4-methyl-1-pentene, thereby improving its anti-aging ability. At the same time, the toughness inside the thermosetting sheath material can be significantly improved, thereby improving its strength in a harsh environment for a long time.

The utility model belongs to the technical field of coffee powder making devices, and particularly relates to a high-caffeine freeze-drying instant coffee powder making device which comprises a grinding box and supporting legs fixed to the lower surface of the grinding box and further comprises a coarse grinding mechanism arranged on the surface of the grinding box. The coarse grinding mechanism comprises a feeding port and a discharging port which are formed in the surface of the grinding box, middle shafts are symmetrically and rotationally connected to the surface of the grinding box, grinding rollers are fixedly connected to the surfaces of the middle shafts, a material receiving hopper is arranged on the lower surface of each grinding roller, and a first inclined plate is arranged on the lower surface of each material receiving hopper; according to the utility model, the whole raw material can be crushed into fragments, and then coarse grinding is carried out, so that equipment abrasion or blockage caused by the fact that large particles directly enter a grinding cavity is avoided, the processing efficiency is improved, particle edges and corners can be effectively crushed, large particle residues are reduced, and coffee powder is finer and more uniform in particle size.

The utility model discloses an engine crankshaft with a buffer structure, which belongs to the technical field of engine crankshafts and comprises a base, a plurality of sliding blocks slidably mounted on the base, a moving plate fixedly mounted at the bottom ends of the sliding blocks, a second inserting rod and a first inserting rod fixedly mounted at the bottom end of the moving plate, and a fixed pressing plate fixedly mounted at the bottom end of the second inserting rod. A push rod is fixedly mounted at the bottom end of the first insertion rod, the bottom end of the push rod slidably abuts against a sliding pressing plate, a connecting spring is fixedly mounted on one side of the sliding pressing plate, two supporting springs are fixedly mounted at the bottom end of the moving plate, and a cushion block is fixedly mounted at the top end of the sliding block. The spring and the inserting rod which are arranged on the base play a buffering role, meanwhile, the small spring and the extrusion block are matched with the gasket to further reduce internal friction and absorb impact, durability of the crankshaft is improved, vibration and noise in the operation process can be reduced, the service life of the crankshaft is greatly prolonged, and stability is improved.

A tire tread rubber composite material based on high extraction resistance liquid rubber and a preparation method thereof. The present invention belongs to the field of rubber materials and their preparation. The purpose of the present invention is to solve the technical problems of poor extraction resistance and decreased mechanical properties of traditional plasticizers. The material of the present invention is prepared from olefin rubber, iron-based butyl-pentane liquid rubber, zinc oxide, plasticizer, sulfur, accelerator and antioxidant, and the olefin rubber is mixed with natural rubber, butadiene rubber, styrene-butadiene rubber and iron-based butyl-pentane rubber, and the molecular weight of the iron-based butyl-pentane liquid rubber is 0.5-5w, and the total content of vinyl side groups and propenyl side groups is 30-60%. The present invention introduces iron-based butyl-pentane liquid rubber into the rubber formula, while ensuring the processing performance of the rubber composite material, the extraction resistance rate is increased by 70%, and the mechanical properties of the rubber material are improved, the tensile properties are increased by about 10.34%, and the tear resistance is increased by about 11.54%.

The utility model relates to the field of lawn mower axle structures, in particular to an anti-abrasion lawn mower axle structure. The technical problem is that a rotating shaft body does not have anti-friction protection due to the fact that mostly, the axle structure of the lawn mower is only provided with a rotating supporting structure. According to the technical scheme, the anti-abrasion lawn mower wheel shaft structure comprises a lawn mower wheel shaft structure body. By arranging the limiting rotating wheel assembly, the device can be limited, supported and preliminarily rotated according to needs, the device is used for supporting and transmitting power, smooth operation of the lawn mower is ensured, the abrasion-resistant rotating assembly allows the wheel shaft to reduce friction and abrasion when the wheel shaft rotates, smooth rotation of the wheel shaft is ensured, and the service life of the lawn mower is prolonged. Meanwhile, loads generated in the operation process of the lawn mower are borne, a high-precision rolling bearing is arranged, regular lubrication is conducted to reduce internal friction, a reinforcing installation assembly can apply pressure to the devices, the precision of the device is guaranteed, and the service life of the device is prolonged.

An actuation system includes a transmission shaft pivotable about a longitudinal axis thereof, a detent spring having an engaged state adapted to prevent pivoting of the transmission shaft and a released state adapted to allow pivoting of the transmission shaft, a detent actuation mechanism coupled to the detent spring and including a toggle actuator operable between a first position and a second position to cause the detent spring to transition between the engaged state and the released state, wherein the first position of the toggle actuator corresponds to the engaged state of the detent spring and the second position of the toggle actuator corresponds to the released state of the detent spring, and a stop mechanism coupled to the detent actuation mechanism, the stop mechanism being transitionable between a first biased state and a second biased state, wherein the stop mechanism applies a first biasing force when in the first biased state to assist the toggle actuator in maintaining the first position and the stop mechanism applies a second biasing force when in the second biased state to assist the toggle actuator in maintaining the second position.

The utility model relates to the technical field of cables, in particular to a shielding type multi-strand extra-flexible cable, which comprises a filling rope and an outer sleeve layer, a plurality of cable units are wound on the outer surface of the filling rope, each cable unit comprises a cable core and an insulating layer, the outer surface of each cable unit is coated with an inner lining layer, and the outer sleeve layer is coated with an outer lining layer. A shielding component is arranged between the lining layer and the outer sleeve layer and comprises a supporting layer. Compared with the prior art, the cable has the advantages that the shielding structure of a traditional metal woven mesh is replaced through the arrangement of the shielding component, the outer surface of the supporting layer is coated with a layer of conductive coating, the conductive coating can form a thin film on the outer surface of the supporting layer, electromagnetic shielding is provided, the influence on the flexibility of the cable is small, and the inner wall of the supporting layer is bonded with a layer of aluminum foil, so that the service life of the cable is prolonged. According to the utility model, a good shielding effect can be provided, the thickness of the aluminum foil is small, the influence on the flexibility of the cable is small, and the design of the two-layer shielding structure can greatly improve the shielding effect.

This invention relates to the field of energy storage system control technology, and discloses an adaptive dynamic reconfiguration integrated control method and device for energy storage systems. This invention achieves pooled management of physical energy storage resources by constructing a virtual energy management platform at the software layer. It combines task performance constraints and multi-objective optimization to achieve dynamic configuration of virtual energy storage units. Through the conversion of logical topology to physical action commands, coupled with a safe topology reconfiguration strategy, it realizes autonomous and online reconfiguration of the electrical connections and operating modes of the energy storage system. Simultaneously, relying on closed-loop adaptive adjustment of comprehensive deviation values, it achieves real-time optimization of the system's operating status, effectively solving the problem of refined management of heterogeneous resources, meeting the grid's demand for rapid and seamless multi-task switching, significantly improving the flexibility, intelligence level, and operating economy of the energy storage system, and adapting to the complex operating requirements of high-proportion renewable energy power systems.

The utility model provides a variable-stiffness magnetorheological damper with bypass holes and capable of keeping low-speed stability. The magnetorheological damper is mainly composed of a piston rod, a piston head, a spring, a floating piston, a magnet exciting coil, a cylinder barrel and the like. Under the action of a magnetic field, an annular flow channel in the piston head generates a magnetorheological effect, so that the shear yield stress of magnetorheological fluid is increased, and damping force is generated. The floating piston is not only used for compensating volume change, but also provides resistance for the piston through the spring connected with the floating piston; the magnitude of the damping force can be changed by changing the magnitude of the current introduced into the magnet exciting coil; and different pressures are provided for the floating piston, so that the compression amount of the spring is changed, and the rigidity of the magnetorheological damper is changed. A bypass hole without a magnetic field effect is formed in the piston; when the speed of the piston is low, the magnetorheological fluid passes through the bypass hole under the pressure difference between the left hydraulic cavity and the right hydraulic cavity, so that the output damping force is reduced, sudden changes of the damping force and rigidity under the low-speed working condition are reduced, and the working stability is improved.

The utility model relates to the field of oral cavity distraction devices, in particular to a handheld oral cavity distraction device for pediatric diagnosis and treatment in traditional Chinese and western medicine. The technical problems that due to the fact that the upper portion or the lower portion of an existing oral cavity dilator is mostly adjusted, after the dilator is placed in the oral cavity, the dilator needs to be independently adjusted to achieve adjusting and dilating of the oral cavity, but due to the fact that the dilator does not work at the same time during adjusting, the dilator is prone to falling off or not dilating in place, and the dilator is inconvenient to use are solved. Therefore, the use is inconvenient. According to the technical scheme, the handheld oral cavity dilator for traditional Chinese and western medicine pediatric diagnosis and treatment comprises a handheld assembly, a telescopic assembly, a base assembly, a displacement assembly, a distraction assembly and a water spraying assembly. According to the utility model, the oral cavity dilator is arranged and comprises the upper supporting part and the lower supporting part, the upper supporting part and the lower supporting part wrap and support teeth, meanwhile, the outer fixing seat connected with the supporting parts is arranged at the rear end, and the ball screw is arranged in the outer fixing seat.

The present application relates to the technical field of chassis suspension system testing, and specifically discloses a vehicle unsprung mass measurement method, device, equipment and storage medium, the method comprising: controlling a target vehicle to move vertically up and down at a horizontal plane, the stiffness characteristic of the suspension system of the target vehicle being linear; obtaining spring elasticity and wheel normal pressure of at least two sampling points in the vertical up-and-down movement process of the target vehicle, the wheel normal pressure being the pressure given to the vehicle by the horizontal plane in the vertical direction; determining the mapping relationship between the spring elasticity and the wheel normal pressure based on the obtained spring elasticity and wheel normal pressure; calculating the target wheel normal pressure corresponding to zero spring elasticity according to the mapping relationship, and calculating the unsprung mass according to the target wheel normal pressure. The present application improves the accuracy of unsprung mass measurement.

The present application relates to polyvinyl chloride pipe manufacturing technology field, disclose a kind of modified PVC power cable protection pipe, including polyvinyl chloride resin, heat stabilizer, pentaerythritol, stearic acid, calcium carbonate, polyolefin alloy ionomer masterbatch and liquid complexing agent.Polyolefin alloy ionomer masterbatch is composed of octene-1 and ethylene copolymer, high-density polyethylene, maleic anhydride grafted polyolefin elastomer and active zinc oxide.Liquid complexing agent is composed of isopropyl tri (dioctyl pyrophosphoric acyloxy) titanate and epoxy soybean oil.Polyvinyl chloride dry mix and polyolefin alloy ionomer masterbatch are melt extruded when preparing, and liquid complexing agent is injected laterally.The present application forms toughening phase by polyolefin alloy ionomer masterbatch to absorb and disperse impact stress, and liquid complexing agent improves compatibility of formula raw materials.Lateral injection process promotes liquid complexing agent to directly act on mixed interface, and improves the compactness of modified PVC power cable protection pipe.

The present invention relates to the field of polymer materials, and in particular to a composite material for a ship propulsion system and a preparation method thereof. The composite material comprises the following components, measured by weight: 45-60 parts of ultra-high molecular weight polyethylene, 5-10 parts of perfluoropolyether acrylate copolymer, 10-15 parts of ethylene-octene copolymer elastomer, 3-5 parts of nitrile rubber, and 4-8 parts of ionic liquid grafted MXenes. According to tests, the composite material prepared by the present invention has a lower dry friction coefficient and a wet friction coefficient under water lubrication conditions, a small volume wear rate, and can be suitable for a water-lubricated stern bearing of a ship propulsion system.

The utility model relates to bridge structure vibration control technical field, concretely relates to a kind of eddy current damper. Including: middle support component, damper cylinder and at least one movable rack;Wherein, middle support component, it is used to connect with main tower connecting piece;Damper cylinder is connected with middle support component, and damper cylinder middle part is supported on middle support component, and damper cylinder is equipped with at least one group of damping transmission assembly;At least one movable rack, it is movably arranged on damper cylinder, movable rack one end is engaged with damping transmission assembly, the other end is used to connect with main beam. The support position of damper in the embodiment of the application is optimized as main middle support, greatly reduce the secondary stress of structural member due to excessive deadweight, reduce the internal friction between gear, rack and other structural members due to deadweight, to enhance the reliability of eddy current damper axial tension and compression energy consumption, and the durability and service life of damper long-term use.

The invention belongs to the technical field of PET sheets, and particularly relates to an energy-saving type polyester PET sheet and a production method thereof.The energy-saving type polyester PET sheet comprises two body layers, a reinforcing layer is arranged between the two body layers, and the reinforcing layer is bonded with the body layers; wherein the body layer is prepared from the following raw materials in parts by weight; the invention relates to a PET (polyethylene terephthalate) composite material, which is prepared from the following components in parts by weight: 80 to 100 parts of PET resin, 2 to 5 parts of dioctyl phthalate, 0.5 to 1 part of polyethylene wax, 0.1 to 0.3 part of hindered phenol antioxidant and 0.2 to 0.5 part of zinc stearate. The molecules of the added dioctyl phthalate are small and can be inserted between PET molecular chains to increase the degree of freedom of motion between the molecular chains, so that the glass transition temperature of the PET resin can be reduced, mutual attraction between the molecular chains is reduced, the molecular chains are easier to move, the PET temperature in a molten state is reduced, and the PET film has the advantages of being high in heat resistance, good in heat resistance and the like. Meanwhile, the PET melt has good fluidity, so that the low-temperature production of the PET sheet is realized, the energy loss in the production process is reduced, and the energy-saving property of the production process is improved.

The invention belongs to the technical field of high polymer materials, and particularly relates to ABS-PS composite plastic with a high melt flow rate and a preparation method of the ABS-PS composite plastic. The preparation method comprises the following steps: S1, performing surface modification on montmorillonite powder by using chlorinated 1-hexadecyl-3-methylimidazole to obtain ionic liquid modified montmorillonite, and then mixing the ionic liquid modified montmorillonite, ABS resin and SAN resin for melting modification to obtain a modified ABS material; s2, mixing the modified ABS material, the PS material, a compatilizer, a titanate coupling agent and an antioxidant by using a high-speed mixer, and then feeding the mixture into a double-screw extruder for mixing and granulating to obtain the ABS-PS composite plastic with the high melt flow rate. The composite plastic disclosed by the invention has a relatively high melt flow rate and excellent flame retardant property, so that the composite plastic can be better applied to shells of household appliances such as air conditioners and the like.

This invention discloses a vibratory compaction device and operating method for road construction, relating to the field of road construction technology. It includes a drive vehicle with a lifting mechanism on its left side, a protective mechanism at the bottom of the lifting mechanism, and a rotating mechanism at the bottom of the lifting mechanism. A vibratory compaction mechanism is located at the bottom of the rotating mechanism to increase the compaction of the road surface. The vibratory compaction mechanism includes: a compaction component located at the bottom of the rotating mechanism; a kinetic energy component located at the top of the compaction component; and a vibration component located inside the compaction component. A compaction arc plate, which is fixedly installed near the bottom of the compaction box, is located on the outer ring of the compaction box. The compaction arc plate is arc-shaped, allowing it to better adapt to uneven parts of the road surface, such as potholes and bumps, during movement. The arc edge transitions more smoothly during compaction, reducing impact on the equipment and improving its service life.

The invention discloses cutting equipment for machining copper parts for switch sockets, and relates to the field of socket copper part machining, the cutting equipment comprises a base, and the cutting equipment has the advantages that cutting and conveying of the copper parts for switch socket production can be linked, so that conveying and cutting of the copper parts can be automatically matched, manual calculation and regulation are not needed, and the production efficiency is improved. The rotating speed of the cutter can be automatically regulated and controlled according to the conveying speed of the copper piece, namely, the faster the copper piece for switch socket production is conveyed, the faster the rotating speed of the cutter is, so that the cutting of the copper piece can be accelerated, the copper piece is prevented from extruding the cutter to increase internal friction, otherwise, the conveying speed of the copper piece for switch socket production is reduced, and the rotating speed of the cutter is reduced, so that the idle running of the cutter can be avoided; according to the copper piece cutting device, the copper pieces can be conveyed, the energy loss is increased, on the premise that the copper pieces can be conveyed, deviation and sliding during cutting of the copper pieces are fully avoided, the cutting effect of the copper pieces for switch socket production is improved, meanwhile, the positions of the limiting plates can be adaptively adjusted according to the sizes of the copper pieces, and cutting of the copper pieces for switch socket production of various models is facilitated.

The invention provides a formation method of an all-solid-state lithium ion battery, aiming at the design of the all-solid-state lithium ion battery, the all-solid-state lithium ion battery is pressurized and heated, and the charge / discharge rate of the battery is gradually adjusted to match the size of the charge / discharge rate, so that the formation of the all-solid-state lithium ion battery is realized. The charging state (SOC), the discharging state (DOD) and the temperature of the all-solid-state lithium ion battery in the formation process are strictly controlled, the all-solid-state lithium ion battery is comprehensively activated, the safety in the technological process is high, the stability of the battery is improved, the service life of the battery is prolonged, meanwhile, the duration of the formation process of the all-solid-state lithium ion battery is greatly shortened, and the production cost is reduced. The industrial production of the all-solid-state lithium ion battery is facilitated. The invention further provides an all-solid-state lithium ion battery, and after the all-solid-state lithium ion battery is subjected to 500 cycles of cycle test at the temperature of 60 DEG C and the temperature of 0.5 C / 0.5 C, the capacity retention ratio is still larger than 80%.