14results about How to "Change viscosity" patented technology

The invention relates to the technical field of nano-liposomes, and discloses cardamonin nano-liposomes for promoting transdermal absorption and a preparation method and application thereof, the cardamonin nano-liposomes comprise an inner phase and an outer phase, the inner phase comprises the following raw materials in parts by weight: 5-10 parts of cardamonin, 2-10 parts of lecithin and 5-20 parts of grease, and the outer phase comprises the following raw materials in parts by weight: 5-10 parts of cardamonin, 2-10 parts of lecithin and 5-20 parts of grease; the stabilizer is carboxymethyl chitosan; an external phase: 0.1-5 parts of a surfactant, 0.1-3 parts of a stabilizer, 10-20 parts of short-chain alcohol and 44.9-80 parts of water; the mixture of the external phase and the internal phase is sequentially subjected to homogenization treatment and microjet homogenization treatment, and the cardamonin nano-liposome for promoting transdermal absorption is prepared. The cardamonin nano-liposome for promoting transdermal absorption provided by the invention is a flexible liposome, and can moisten skin and reduce moisture loss on the skin surface; the transdermal amount and retention amount of the carried components are obviously improved; the permeability of the cardamonin to the skin cell membrane is enhanced.

The present invention provides a Roots-type magnetorheological fluid medium high-pressure retarder and a car, and relates to the technical field of retarders. The Roots-type magnetorheological fluid medium high-pressure retarder comprises a working housing, a Roots-type transmission assembly, and a magnetic field generating component capable of generating a magnetic field and adjusting the magnetic field strength; a working cavity for the movement of the Roots-type transmission assembly is arranged in the working housing, an oil inlet and an oil outlet connected to the working cavity are provided on the working housing, an oil inlet pipe is connected to the working housing at the oil inlet, and an oil outlet pipe is connected to the working housing at the oil outlet; the working cavity is filled with magnetorheological fluid working medium, and a magnetic field generating component is arranged in the oil inlet pipe and / or the oil outlet pipe. The car comprises a car body and a Roots-type magnetorheological fluid medium high-pressure retarder; the Roots-type magnetorheological fluid medium high-pressure retarder is arranged on the car body, and the Roots-type magnetorheological fluid medium high-pressure retarder is connected to the car drive shaft through a speed reduction and torque increase gear pair. The technical effect of fast retarder response and large braking force is achieved.

The invention discloses an injection mold structure for manufacturing a motorcycle ABS brake part, and relates to the technical field of injection molds of brake parts, the mold comprises a movable mold seat plate, the bottom of the movable mold seat plate is movably connected with a fixed mold seat plate, the top of the movable mold seat plate is fixedly connected with a sprue gate in a penetrating manner, and the top of the fixed mold seat plate is fixedly connected with a brake disc type mold cavity; a demolding assembly used for rapid demolding is arranged in the fixed mold base plate, an auxiliary assembly used for reducing bubbles is arranged at the bottom of the brake disc type mold cavity, edge grinding in the uniform demolding process is achieved through matched use of the demolding assembly, and due to the fact that an auxiliary part rotates to drive a formed brake disc to move upwards as a whole, the brake disc is evenly stressed, and the service life of the brake disc is prolonged. In the demolding process, the brake disc cannot incline, shape distortion and damage are avoided, the device is suitable for positioning and clamping of a mechanical arm, manual operation is not needed, the grinding step and the demolding step are combined, the requirement for subsequent independent edge grinding treatment can be reduced, and therefore the production process is simplified.

The invention discloses a fast charging electrolyte, a lithium ion battery and a preparation method and application thereof, and belongs to the technical field of lithium ion batteries. The fast charging electrolyte provided by the invention comprises an electrolyte lithium salt, an organic solvent and an additive, the types of the electrolyte lithium salt, the organic solvent and the additive are different; the additives comprise a first additive and a second additive; the first additive comprises at least one of an ester additive, a nitrile additive and a hydrofluoroether compound; the second additive comprises an inorganic salt additive; the addition amount of the first additive is 1-20% of the total mass of the fast charging electrolyte; the addition amount of the second additive is 0.01-5% of the total mass of the fast charging electrolyte. According to the invention, the first additive and the second additive are combined and added into the electrolyte, so that the cycling stability, the fast charging performance and the rate capability of the battery can be remarkably improved under the high voltage of more than or equal to 4.6 V.

The utility model discloses a motorcycle front magnetorheological damper and motorcycle, including working cylinder, guider assembly, piston assembly, floating piston assembly, magnetorheological fluid, outer tube support assembly, ECU control unit and sensor, guider assembly, piston assembly and floating piston assembly are located in the inside of working cylinder, and piston assembly includes built -in solenoid and damping passage, and damping passage penetrates the upper and lower end of piston assembly, and magnetorheological fluid fills the working cavity between guider assembly and floating piston assembly, and, outer tube support assembly is at least partially coated in the outside of working cylinder, and is connected with guider assembly, and ECU control unit and solenoid electric connection are used for the signal adjustment input to solenoid's current according to sensor, like this through solenoid and the combination of magnetorheological fluid, ECU control unit can real -time regulation magnetic field intensity, change the viscosity of magnetorheological fluid to dynamic control damping force.

The present invention relates to the technical field of shock absorption of municipal engineering equipment, and discloses a shock absorption device for municipal construction engineering equipment, including a support seat installed at the bottom of the engineering equipment, a fixed support box and a power supply, wherein the support seat has a total of 9, and the movable sleeve of the support seat is provided with a connecting column, and the top of the connecting column is fixedly connected with a receiving plate. Through the arrangement of nine groups of receiving plates and limiting devices, the arrangement of the receiving plates can be changed to adapt to different equipment, and can play a good supporting role on the corners of the equipment to prevent the equipment from tipping over during use, and the shock absorbing spring is used as one of the shock absorption methods. When the shock absorbing spring cannot meet the shock absorption demand, the support seat and the connecting column are energized by the power supply, and then the current is transmitted to the electrorheological fluid in the vertical rubber sleeve and the connecting rubber sleeve. Under the action of the current, the viscosity of the electrorheological fluid increases. On the one hand, the shock absorption of the engineering equipment is achieved by the energized electrorheological fluid.

The invention relates to an online automatic flat film thickness adjusting die head and an adjusting method thereof.The online automatic flat film thickness adjusting die head comprises a front die body and a rear die body, and a melt runner is formed between the front die body and the rear die body; a front lip and a rear lip are respectively arranged at the lower ends of the front mold body and the rear mold body, a lip gap is formed between the front lip and the rear lip, and heating pipes are uniformly inserted in the front mold body and / or the rear mold body at intervals along the width direction of the flat film; by adjusting the temperature of the heating pipe in the corresponding area, the fluidity of the melt in the area is changed, and the thickness of the flat film flowing out of the area corresponding to the lip seam is adjusted. According to the invention, the local heating temperature is independently controlled, and the viscosity and fluidity of the melt in the corresponding area are changed, so that the discharging amount of the lip seam is finely adjusted to adjust the thickness of the flat film. The adjustment mode based on thermal expansion and rheological properties can realize continuous, stepless and trace thickness adjustment, and can effectively cope with production occasions with extremely high requirements on film thickness uniformity.

The utility model provides an integrated stirring device and belongs to the technical field of stirring devices. The integrated stirring device comprises a tank body and a stirring unit, the tank body comprises an outer tank body and an inner tank body; wherein a first fly ash inlet for water-containing gasified fly ash to enter and a first conditioning agent inlet for a sludge conditioning agent to enter are formed in the top of the outer tank body, a sludge inlet is formed in the side wall of the outer tank body, and a material outlet for discharging a mixed material formed by a wall breaking agent and sludge is formed in the bottom of the outer tank body; the inner tank body is configured to receive water-containing gasified fly ash and a sludge conditioning agent and mix the water-containing gasified fly ash and the sludge conditioning agent to form a wall-breaking agent, an overflow port for discharging the wall-breaking agent is formed in the side wall of the top of the inner tank body, and the inner tank body is communicated with the outer tank body through the overflow port; the stirring unit comprises a stirring motor fixed at the top of the outer tank body, a stirring shaft which is controlled by the stirring motor and penetrates through the inner tank body to extend to the bottom of the outer tank body, and a plurality of stirring blades arranged on the stirring shaft.

The invention discloses a fiber reinforced negative carbon type composite material, which is prepared from the following ingredients in parts by weight: 50 to 130 parts of vaterite type calcium carbonate, 0.2 to 2.5 parts of magnesium salt, 1.0 to 4.5 parts of strontium salt, 10 to 70 parts of water, 0.03 to 4 parts of polyvinyl alcohol and 0.1 to 5 parts of superfine fibers. The preparation method comprises the following steps: dissolving magnesium salt and strontium salt in water, then adding polyvinyl alcohol, and stirring and dissolving at 30-95 DEG C to obtain a homogeneous mixed solution; adding vaterite type calcium carbonate into the mixed solution, stirring for 1-3 minutes until a slurry state appears, then adding superfine fibers, and continuously stirring for 3-5 minutes to obtain slurry in which the fibers are uniformly dispersed; and pouring the slurry into a mold for molding, carrying out steam curing at 50-90 DEG C for 1-8 hours, demolding, and drying at 90-130 DEG C for 8-20 hours to obtain the fiber-reinforced negative carbon type composite material. The polyvinyl alcohol is added in the forming and stirring process to adjust the viscosity of the system, so that high dispersion of fibers is realized, the environmental protection characteristic of the negative carbon type composite material is maintained, the mechanical property of the negative carbon type composite material is remarkably improved, and the application range of the negative carbon type composite material in the fields of buildings and engineering is widened.

The present invention discloses a polyurethane composite material for multi-use comfort footwear and a preparation method thereof, and belongs to the technical field of polyurethane composite materials. The present invention adopts solid ball shear thickening liquid capsules and hollow ball expandable beads to perform virtual and real two-phase reinforcement of polyurethane foam. Under the premise of ensuring that the density of the foam material remains basically unchanged, it can not only improve the mechanical properties of the foam composite material but also enhance its energy absorption efficiency, and improve the stress sensitivity, and have a certain damping effect on the external load. At the same time, the reaction occurs at room temperature and can be cured at room temperature, which reduces energy consumption and is conducive to large-area application. The two-phase reinforced polyurethane foam composite material of the present invention has an energy absorption efficiency several times higher than that of conventional polyurethane foam, and the energy absorption can reach 57.2162KJ / m 3 , compression strength reaches 3.0888MPa, maintaining apparent density of 0.311g / cm 3 ‑0.351g / cm 3 .

This invention provides a welding device for industrial robot manufacturing, relating to the field of welding equipment technology. It includes a welding mechanism mounted at one end to the end of a robot body via a connecting mechanism. The connecting mechanism includes a floating column mounted on the end of the robot body, a floating disk axially and slidably passing through a floating cavity within the floating column, a floating rod with one end vertically positioned at the center of the floating disk's end and the other end movably extending through the end of the floating column, a resistance adjustment component mounted on the floating column and controlling the sliding resistance of the floating disk within the floating cavity, a fine-tuning component mounted at one end of the floating rod, and a control system electrically connected to both the adaptive floating component and the welding mechanism. The control system controls the sliding resistance of the floating disk through the resistance adjustment component based on feedback information from the welding mechanism's operation. A through hole is provided on the end face of the floating disk. This invention achieves adaptive floating adjustment and rapid, precise attitude adjustment of the industrial robot welding device.

According to the high-precision printing method for additive manufacturing of copper by increasing the oxygen content of the melt, selective laser melting printing is conducted through copper material powder with the oxygen content ranging from 300 ppm to 5000 ppm, or when the copper material powder is used for selective laser melting printing, the oxygen content in a forming cavity is controlled to range from 300 ppm to 5000 ppm. By effectively controlling the increase of the oxygen content, the precision of the copper melt during printing can be promoted, and by effectively increasing the oxygen content, the surface tension gradient, viscosity and wetting angle of the melt can be changed, so that the copper melt has higher stability, and the oxidation product of oxygen and copper can improve the wetting behavior of the melt and is beneficial to improving the surface quality; the powder sticking phenomenon on the melt surface is prevented. The high-precision printing method for additive manufacturing of copper by increasing the oxygen content of the melt has the advantages of being high in printing precision, low in surface roughness of a printing structure, high in surface quality, narrow in forming width and the like, and the technological method is controllable in process and low in cost.

The invention relates to a method for regulating the temperature of ink in an ink printing process, in which ink (5) is pumped through an inlet line (21) and a return line (22) of an ink dispenser (20) and between them through a printing head (2) of the ink (5) supplied in parallel, in which an actual temperature value is compared with a predetermined target temperature value, the method is characterized in that a flow rate sensor (32) is operated between the input line (21) and the return line (22) and in parallel with the printing head (2) and measures the flow rate of the ink (5) or generates a flow rate-dependent measurement signal, and the flow rate sensor (32) is operated between the input line (21) and the return line (22) and in parallel with the printing head (2). Converting the flow rate or the measurement signal into a temperature auxiliary value by means of a respective predetermined characteristic curve; the auxiliary temperature value is used as an actual temperature value or as a target temperature value for adjustment.

The utility model discloses a small magneto-rheological damper, and belongs to the technical field of dampers. The piston rod is connected to the first end of the oil cylinder in a telescopic mode, the piston and the coil are arranged on the piston rod, the magnetorheological fluid is arranged in the oil cylinder, a spring air cylinder is sleeved on the outer side of the second end of the oil cylinder, a movable partition plate is arranged at one end, located in the oil cylinder, of the piston rod, and a fixed partition plate is arranged on the inner wall of the oil cylinder and located between the piston and the movable partition plate. The movable partition plate is in sealed sliding fit with the inner wall of the oil cylinder, the fixed partition plate is in sealed sliding fit with the piston rod, the spring air cylinder is communicated with the second end of the oil cylinder, and inert gas is arranged between the movable partition plate and the fixed partition plate and in the spring air cylinder. Compared with a traditional damper, the damper has the advantages that the damper is shorter, the height of a suspension of a scooter for old people can be effectively reduced, and the convenience and safety of the scooter for old people are improved.