94results about How to "Shear stable" patented technology

The invention discloses energy-efficient long-life gasoline engine oil prepared from the following components: synthetic base oil, a composite antioxygen, a metal cleaning agent, an ashless dispersant, a nano-level friction improver, a viscosity improver and a pour point reducer. The gasoline engine oil provided by the invention has the following advantages: requirements of API SM, ILSAC GF-4 and SAEJ300 are met and the service life is long; the complete synthetic base oil features low pour point, high viscosity index, good economy of fuel, degradability and reduced harm to the ecological environment; the phenol type antioxygen is combined with ZDDP, the anti-oxygen and antifriction properties are good and the catalyst poisoning in a tail gas processing unit is prevented; the acid neutralization capacity is good, the cleaning dispersibility is good and the oil sludge and carbon deposit are prevented from being generated; and the nano-level friction improver is added, the frictional factor is low, and the oil film features high carrying capacity and can automatically repair abraded surface and lengthen the service life of the engine.

The present invention relates to a novel polymer with pendant groups. The invention further provides for a lubricating composition containing said polymer. The invention further provides a method and use of controlling viscosity index by supplying to an oil of lubricating viscosity the polymer with pendant groups.

The invention belongs to the technical field of yield increasing and fracturing of petroleum engineering and provides a method for preparing a self-suspension propping agent in a laboratory. The method comprises the following steps: taking quartz sand/ceramsite/propping agent as aggregates; pre-treating with an organic solvent and treating the surface with a coupling reagent; polymerizing and coating; and crushing, drying, pelletizing and then packaging. A coating polymerizing product (as shown in the figure) is acquired through the polybasic polymerization of the reactant and acrylamide/sodium acrylate/functional monomer/cross-linking agent. The expansion times of the prepared self-suspension propping agent is 3-12 times; the self-suspension propping agent can be completely hydrated within 1min-2min; the hydrated layer is stably expanded at 2 DEG C to 193 DEG C; the self-suspension propping agent swells once encountering with water, the volume density is reduced from 2.4g/cm3 to 1.3g/cm3 and the excellent self-suspension characteristic after the clean water system swelling is presented. The self-suspension propping agent prepared in the laboratory can realize the onsite mixing for hydraulic fracturing construction, the water for fracturing is greatly reduced, the labor cost is lowered and the application prospect is wide.

The invention relates to novel airplane de-icing/anti-icing liquid and a preparation method thereof. The de-icing/anti-icing liquid consists of de-ionized water and the following ingredients in percentage by weight: 30 to 80 percent of dibasic alcohol, 0.01 to 1.0 percent of thickening agents, 0.05 to 2 percent of surface active agents, 0.01 to 1 percent of corrosion inhibitors and 0.05 to 0.2 percent of antimicrobial agents, and the pH is 7.0 to 7.5. The airplane de-icing/anti-icing liquid is mainly used for clearing condensed settlings such as ice, snow, frost and the like formed on the airplane surface when an airplane stops on the ground, and new snow, ice or frost can be prevented from being formed on the airplane surface through the further accumulation.

The invention discloses a thermotropic supermolecule gel temporary-plugging deflection fracturing fluid. The thermotropic supermolecule gel temporary-plugging deflection fracturing fluid is prepared from, by weight, 10% to 35% of cyclodextrin, 0.5% to 3.5% of lithium chloride, 1.3% to 15% of fatty alcohol, 0.3% to 10% of methylcellulose and the balance N,N-dimethyl formamide. The number of C atoms of the fatty alcohol is 10 to 18, and the weight-average molecular weight of the methylcellulose is 400 to 10,000. By means of the thermotropic supermolecule gel temporary-plugging deflection fracturing fluid, temperature-controlled gelling can be achieved, a user does not need to add other temporary-plugging agents, and formed gel is stable and resistant to shearing, and can be restored into the gel shape after being sheared; as the supermolecule gel temporary-plugging deflection fracturing fluid is composed of micromolecules, the re-arranging effect can be easily achieved after gel breaking, and residual damage to a reservoir can be avoided. The thermotropic supermolecule gel temporary-plugging deflection fracturing fluid is suitable for fracturing transforming of oil and gas fields, and has broad market prospects.

The invention relates to core-shell particles, the core of which is essentially solid with an essentially monodisperse size distribution, with a difference between the refractive index of the core material and the shell material. The core is made from a material which either does not flow or does so at a temperature above the flow temperature of the shell material and the shell is connected to the core by means of an intermediate layer, characterised in that the shell is made from a copolymer with at least one C₄-C₈ alkylacrylate and at least one C₄-C₈ alkyl- or -alkylarylmethacrylate as monomer component.

The invention discloses modified regeneration high impact polystyrene for tubes and pipe fittings and a preparation method of the high impact polystyrene, which solve the problems of high cost and complex method of the conventional high impact polystyrene for the tubes and pipe fittings. The modified regeneration high impact polystyrene mainly comprises the following components by weight percentage: 10%-50% of high impact polystyrene, 15%-80% of recycled high impact polystyrene, 5%-20% of toughening agent, 5%-40% of calcium carbonate, 0.1%-1% of antioxygen 1010, 0.3%-1% of silane coupling agent and 0.4%-2% of pigment. The invention also provides the preparation method of the modified regeneration high impact polystyrene for the tubes and pipe fittings. The preparation method can be used for effectively recycling waste high impact polystyrene. The modified regeneration high impact polystyrene for the tubes and pipe fittings has the advantages that resources are saved, the environment is protected, the cost is lowered, the preparation process is simplified and the like.

The invention provides a coating stirring device, and relates to the technical field of coatings. The coating stirring device comprises a barrel body and a stirring mechanism, wherein an opening-closing cover body is arranged on the top end of the barrel body; an extruding plate for draining liquid in the barrel body is arranged at the cover body; the stirring mechanism is arranged in the barrel body and comprises a driving main shaft, and one end of the driving main shaft penetrates through the bottom part of the barrel body and is connected to a driving element; the driving main shaft is provided with a first storing chamber for accommodating a foldable stirring element; the stirring element comprises telescopic stirring brackets, and telescoping parts for fixedly connecting the stirringbrackets to the driving main shaft in a stretching and closing manner; one end of each stirring bracket is fixedly connected to the end part of the first storing chamber, and the other end of each stirring bracket is movably connected to the corresponding telescoping part. According to the coating stirring device, the stirring element of the stirring mechanism can be stored in the first storing chamber in a folding manner, so that the blockage in feeding is avoided; the extruding plate speeds up discharging, and discharging residues are avoided; the stirring uniformity is ensured through theplurality of stirring brackets; and meanwhile, stable shearing force is formed, so that the materials can be uniformly mixed.

Provided is a lubricant composition which has achieved a good balance between fuel consumption saving and extreme-pressure properties, while having shear stability, oxidation stability and wear resistance. Specifically, provided is a lubricant composition which is characterized by containing a base oil, a viscosity index improver, a molybdenum-based friction modifier, a boron-containing dispersant, and a sulfur/phosphorus-based extreme-pressure additive or at least two extreme-pressure additives selected from among a sulfur-based extreme-pressure additive, a phosphorus-based extreme-pressure additive and a sulfur/phosphorus-based extreme-pressure additive, and which is also characterized in that: the base oil is composed only of a synthetic oil; the base oil has a kinematic viscosity of from 3 mm2/s to 10 mm2/s (inclusive) at 100 DEG; the viscosity index improver is a resin having a number average molecular weight (Mn) of from 1,000 to 10,000 (inclusive); the mass ratio of the boron atoms (B) contained in the boron-containing dispersant to the molybdenum atoms (Mo) contained in the molybdenum-based friction modifier, namely (B)/(Mo) is from 1 to 5 (inclusive); and the mass ratio ofthe sulfur atoms (S) contained in the extreme-pressure additive(s) to the phosphorus atoms (P) contained in the extreme-pressure additive(s), namely (S)/(P) is from 10 to 20 (inclusive).

A sampling scissors of metal slab is prepared as setting master hydraulic cylinder for driving top shearing blade on top of body frame through hinge and setting bottom shearing blade corresponding to position of top shearing blade on bottom of body frame, setting metal slab material pressing unit in front of top and bottom shearing blades, setting size-setting mechanism and gap regulation mechanism of top and bottom shearing blades at back of top and bottom shearing blades, setting metal slab material conveying unit with rollers in front of body frame.

The invention discloses a bar shearing device. The bar shearing device comprises a fixed seat, a pressing mechanism, a shearing mechanism and a supporting mechanism. The pressing mechanism is used for pressing to-be-sheared bars onto the fixed seat, the shearing mechanism is used for shearing the bars, and the supporting mechanism is used for supporting the bars. The pressing mechanism is positioned on a bar feeding port side, the shearing mechanism comprises a shearing arm rotatably arranged on the fixed seat, an upper blade is arranged at one end of the shearing arm, a lower blade matched with the upper blade is arranged on the fixed seat, the supporting mechanism comprises a supporting part, and the supporting part is rotatably arranged on the shearing arm and used for supporting the to-be-sheared bars. During shearing of the bars, the unsheared sides of the bars can be fixedly pressed by the pressing mechanism, and to-be-sheared portions of the bars can be supported by the supporting mechanism, so that higher stability of the bars during shearing is achieved, smoothness in shearing is guaranteed, high flatness of sections at sheared positions is achieved, and materials are well saved.

The invention discloses a wire harness cutting-off device and relates to the field of automobile wire harnesses. The wire harness cutting-off device comprises two handles, a base and a shearing platform; the shearing platform is arranged on the base with a cuboid structure; the two handles are symmetrically arranged at two sides of the shearing platform and are hinged with the shearing platform; a through hole is formed in the top of the shearing platform; a pressure column is sleeved by the through hole; a blade is arranged inside the shearing platform and is connected with the bottom of the pressure column; the top of the pressure column is provided with a connecting platform; a supporting rod I is hinged between the connecting platform and each handle; notches are formed in two sides of the shearing platform and are internally sleeved with push rods on which clamping pieces are arranged; a supporting rod II is hinged between each push rod and each handle; a shearing port is formed in the middle of the shearing platform; and both the blade and the clamping pieces are arranged in the shearing port. By using the cutting-off device, a wire harness can be fixed, so that the phenomenon that the efficiency is affected due to the slip off of the wire harness during cutting is avoided.

The invention discloses storage battery large-plate grid casting equipment. The storage battery large-plate grid casting equipment comprises a casting plate and a casting plate auxiliary machine; a casting plate host is used for casting and moulding a battery plate grid; the casting plate auxiliary machine comprises a vertical shearing mechanism used for shearing a casting head of the vertically placed plate grid, a plate grid turning device used for driving the sheared plate grid from a vertical state to a horizontal state by overturning, and a truss manipulator assembly which is crossed between the casting plate host and the vertical shearing mechanism and used for casting and moulding the casting plate host and vertically hoisting the plate grid mould by the casting plate host to the vertical shearing mechanism. The equipment can reduce the machinery damage at each link during plate grid manufacture as possible, and plate grid deformation can be controlled.

The invention relates to the technical field of electronic component production equipment, and discloses an adjustable pin shearing machine for electronic component production. The adjustable pin shearing machine comprises a base plate, the top of the base plate is fixedly provided with two side plates, the opposite sides of the side plates are fixedly provided with bearing clamps, a screw rod which penetrates through each side plate and extends to the inside of each bearing clamp is movably arranged on the right side of each side plate, the outer wall of the screw rod is sleeved with a connecting block, a hand wheel is fixedly arranged on the right side of the screw rod, and a limiting disc is fixedly arranged on the right side of each side plate and positioned on the periphery of each screw rod. According to the adjustable pin shearing machine for electronic component production, by starting an electric push rod to stretch and retract, the electric push rod drives a motor and a cutting knife to lift through a case, so that the cutting height of the cutting knife is adjusted, and the effect of simple and convenient adjustment is achieved, so that the adjustable pin shearing machine is suitable for shearing various electronic components of different types, thereby improving the practicability of the adjustable pin shearing machine.

The invention discloses a method for online detecting the harmful vibration of strip steel in the shearing process of a disc shear. The method comprises the steps that an existing tension real-time collection system of a disc shear area is utilized, the vibration frequency and vibration amplitude of the strip steel are analyzed online and quantitatively according to the real-time tension data of the disc shear in the shearing process when the strip steel of the specific specification and steel type is sheared under specific tension and at specific speed, corresponding vibration restraining measures are adopted according to the data analysis result starting with speed adjustment, and the stable operation and shearing of the strip steel are guaranteed.