65results about How to "Reduce the number of bubbles" patented technology

The invention relates to the field of power lithium ion batteries, in particular to a preparation method of a lithium ion power battery cathode. The preparation method comprises the following steps: first preparing sodium carboxymethylcellulose glue solution in a number 1 stirring machine, adding conducting carbon black and dry graphite powder in a number 2 stirring machine, uniformly mixing, and then adding the sodium carboxymethylcellulose glue solution in the number 1 stirring machine into the number 2 stirring machine; and adding little alcohol, vacuumizing, defoaming, adding styrene-butadiene latex, mixing, finally vacuum defoaming, and obtaining the lithium ion power battery cathode material. By improving a stirring scheme, the stirring time of the cathode slurry is shortened, the moisturizing coating performance of the cathode slurry is improved, and a bubble-free purpose is achieved.

The invention relates to a sample preparation method for inorganic nonmetal powder material for the backscattered electron image and energy spectrum study. The sample preparation method comprises the steps as follows: 1, blending and uniformly mixing a powder sample with epoxy resin, 2, inlaying a sample by adopting a vacuum inlay instrument, 3, curing for 24 h at room temperature, 4, grinding and polishing, 5, performing ultrasonic cleaning, and 6, performing film coating. When the sample number is smaller or a plurality of samples are required to be observed at the same time, a secondary inlaying technology is adopted and comprises the steps as follows: firstly, a smaller die is adopted, and one or more small samples are prepared via the steps 1-3, then, the cured samples are placed into a bigger die, epoxy resin is poured into the vacuum inlay instrument, and the samples are cured at room temperature, and subsequent treatment is performed on the samples according to the steps 4-6. The sample preparation method provided by the invention can improve the sample quality, simplify the operating process and reduce the sample preparation difficulty.

The invention discloses an in-pipe concrete vacuum auxiliary filling method for a large concrete-filled steel tubular structure and a filling method. The filling method comprises the following steps: preparing in-pipe concrete, grading structural pipes, placing graded filling devices, placing a vacuumizing device and checking gas tightness of the system, and grading and continuously filling in-pipe concrete under the vacuum negative pressure condition. The concrete is graded and filled, so that the influence of later filled concrete on coagulation of the filled concrete is avoided, and the mechanical property of the large concrete-filled steel tubular structure is improved, meanwhile, the requirement to the pumping capacity of the concrete pumping device is reduced; and the method and thesystem bring good economic effects. The concrete is filled continuously, so that the working period is shortened; under the negative pressure condition, the concrete is filled, thus the compactness of concrete and tightness of the concrete binding with the steel pipes are reinforced; and the quality of the steel pipe concrete structure is further improved.

The invention provides a preparation method of a self-bonding and pre-decomposing glass batch. The method comprises the following steps of: pre-decomposing carbonate out of a kiln so as to obtain slaked lime and periclase, then mixing with other glass batch in a proper proportion in a mixing machinery, adding 8-20wt% of water during the mixing process, then pelletizing the mixed batch, standing for more than 72hours, and hardening by hydration to finally obtain the pelletized glass batch with a certain strength. According to the preparation method, the decomposing process of the carbonate is finished out of the kiln, thus the heat consumption can be greatly reduced; the lower limit of the grain size of the raw material is not required, and thus the resource can be used furthest; the cost of the raw material is reduced by adopting the light soda ash; and the pelletizing of the glass batch can be achieved without using an external bonding agent. Therefore, the preparation method has the advantages that the melting rate is improved, the melting temperature is reduced, the melting efficiency is high, and the like.

The invention discloses a device and method for reducing impurities and bubbles on a core cladding interface for a large-size optical fiber perform, relate to the device and method for reducing the impurities and the bubbles on the core cladding interface in the manufacturing process of the large-size optical fiber perform, and aim to remove the impurities, dust and static on the surface of a core rod, and prevent a powder rod formed after the outside vapor deposition of the core rod from having bubbles and impurities on the core cladding interface. The device comprises a box special for holding the core rod, an air purifying fan and an anti-static fan, wherein the box special for holding the core rod comprises a box body; a box door is arranged on the front side of the box body; the air purifying fan and the anti-static fan are mounted at the top of the box body; a purifying air inlet and an anti-static air inlet are formed above the boxy body; the air outlet of the anti-static fan is connected with the anti-static air inlet on the box body through a pipe; a core rod support table is mounted at the bottom of the box body of the box special for holding the core rod and is used for supporting the core rod; a support chuck is mounted on each of the two sides on the lower part of the box body and used for clamping and fixing the core rod.

The invention discloses an environment-friendly plastic injection mold, and belongs to the field of injection molds. The environment-friendly plastic injection mold is characterized in that through the arrangement of a thermal ball chain, when a molten material is injected, the temperature rises, and air in thermal collision balls is heated to expand, so that the distance between every two adjacent thermal collision balls on the thermal ball chain is reduced; and through cooperation with self-hardening bags, repulsive force exists between every two adjacent thermal collision balls, the thermalcollision balls which are close to each other are in an unstable state, the thermal collision balls continuously move in a self-vibration cavity, and the moving degree of the thermal collision ballsis increased when the thermal collision balls expand increasingly along with continuous injection of molten material, the thermal collision balls collide with the inner wall of the self-vibration cavity, therefore, the thermal ball chain generates a vibration effect on the injected molten material, the number of bubbles in the molten material is remarkably reduced, the quality and strength of a finished product are higher, the situation of local cracking or breaking during use is effectively avoided, and the service life is prolonged.

The invention belongs to the technical field of copper electrolysis smelting, and particularly relates to a device and method of industrially carrying out magnetized copper electrolysis. The device comprises a permanent magnet device, a transition tank, an electrolytic tank, a low tank, an elevated tank and a steam heating device. According to the device and method, the large-scale and high-efficiency utilization of the copper magnetic electrolysis technology is achieved by the bypass cycle of a magnetic treatment device, and the magnetic treatment efficiency can be improved in the mode that an electrolyte passes through the permanent magnet device at the high speed. The loren magnetic force borne by the electrolyte in the process that the electrolyte passes through the magnetic field canbe enhanced, the electrolyte is greatly activated, the impurity flocculating setting is reinforced, the clarity of the electrolyte is improved, cathode copper crystal grains are refined, the number ofbubbles in the electrolyte is reduced, and the problem that due to the facts that the air bubbles in the electrolyte are prone to having a reaction on the surface of an anode to generate an oxide film, and anodic passivation happens, the cathode copper quality is affected is solved.

The invention discloses a quick discharging method for tiny bubbles from an optical fiber coating, and relates to the field of optical fiber communication. The quick discharging method comprises the following steps of: introducing the coating into a closed coating tank, heating the coating to the temperature of 30-65 DEG C, preserving the heat, vacuumizing the closed coating tank to 1*10<-4>-5,000 Pa, and retaining the vacuum degree; inclining the middle axis of the sealed coating tank by a certain angle relative to a rotating shaft, so that the sealed coating tank does centrifugal motion around the rotating shaft, and coatings are always positioned at the bottom of the sealed coating tank; and increasing the centrifugal rotating speed from 0 rpm until the centrifugal rotating speed is up to 500-22,000 rpm, performing the centrifugal motion for 5-25 minutes at the centrifugal rotating speed, and then reducing the centrifugal rotating speed until the centrifugal rotating speed is 0 rpm, wherein at most one tiny bubble of which the diameter is 0.01-0.15 mm exists in every cubic centimeters, and bubbles of which the diameters are more than 0.15 do not exist. By the quick discharging method, the time for discharging the tiny bubbles during the heat preservation of the optical fiber coating can be reduced, the discharging speed and the exhaust rate of the tiny bubbles can be improved, and the number of bubbles in the optical fiber coating and the defects of the coating layers are reduced.

The invention discloses a vacuum defoaming device and a foam removal method adopting the device. The device comprises a tank body, a stirring shaft and a control device, wherein the tank body is usedfor containing a liquid material, and the liquid material performs centrifugal motion when the tank body rotates; the stirring shaft is arranged in the tank body and stirs the liquid material when thestirring shaft rotates, so that the liquid material does centrifugal motion; the control device is respectively connected with the tank body and the stirring shaft and is used for controlling the tank body and the stirring shaft to rotate; when the control device controls the stirring shaft and the tank body to alternately rotate, the liquid material has a downward extruding tendency under the self-weight of the liquid material and the centrifugal forces produced by the rotation of the tank body and the stirring shaft, so that a foam existing in the liquid material is extruded and separated from the liquid material.

The light guide plate manufacturing method comprises the following steps of: using a rolling depression device comprising an imprinter, wherein the surface of the imprinter comprises a first structure; rolling a resin layer arranged on a substrate by the imprinter, or forming the resin layer on the imprinter to roll the substrate, enabling the resin layer to continuously form a second structure complementary to the first structure, and attaching the second structure on the substrate. The rolling depression area formed by the rolling depression mode is smaller, so the uniformity of pressure application is easy to control, the light guide plate can have high transcription rate, and defects are reduced.

The invention discloses a conveying system and method capable of adjusting the blanking speed at a constant speed for steel shell concrete. The system comprises a pouring trolley frame, a hopper and aconstant-speed blanking system, the hopper is fixed on the pouring trolley frame, and the constant-speed blanking system is connected with a hopper discharge port. The constant-speed blanking systemis composed of a blanking valve, a gear blanking device, a speed reduction frequency converter, a lead screw lifter and two motors, the inner structure of the blanking valve comprises a blanking baffle and a driving shaft, one motor is arranged at the top end of the lead screw lifter, the lead screw lifter is hinged to a driving shaft, and the driving shaft is connected with the blanking baffle. By means of the system and method, the defects that a concrete surface layer is uneven and air is difficult to remove in a later period of pouring are overcome. And the working efficiency and the capacity are improved, the production cost is reduced, the construction qualification rate is improved, local cavities, large-area air holes and honeycomb pitted surfaces of a steel shell and the concretesurface layer are prevented from being generated during pouring, and the engineering quality is effectively guaranteed.

The invention discloses a double-penetration type high-performance noise reduction water-based damping coating which is mainly prepared from the following raw materials in parts by weight: 20-25 partsof water, 50-60 parts of acrylic resin emulsion, 8-12 parts of styrene-acrylic emulsion, 0.5-2.0 parts of defoaming agent, 0.5-1.0 part of nano graphite flake, 2-3 parts of dispersing agent, 0.1-0.3part of preservative, 1.0-1.5 parts of antirust agent, 215-280 parts of hydrated alumina powder and 1.5-2.5 parts of thickening agent. In addition, the invention further provides a preparation methodthe double-penetration type high-performance noise reduction water-based damping coating. The double-penetration type high-performance noise reduction water-based damping coating has noise reducing performance, the weighting sound insulation index of a base material coated with the coating is increased by 4 dB to 4.2 dB, the technical requirements of water-based damping coatings for high-speed trains are met and the defects that single-resin emulsion coatings are poor in damping performance, mechanical performance, corrosion resistance and the like are overcome.

The invention provides a preparation method of a PI substrate. The preparation method comprises a PI coating preparation step S1, a solvent removal treatment step S2, a constant-temperature film forming treatment step S3 and a laser surface treatment step S4. According to the invention, laser surface treatment is carried out on the PI film layer, when irradiation laser irradiates the surface of the PI film layer, heating treatment can be formed in the PI film layer, bubbles in the PI film layer are heated to go upwards and then are released from the surface of the PI film layer, and thereforePI bubbles existing in the PI film layer in the PI substrate prepared through the preparation method are few.

The invention discloses a process and a kiln for producing high-performance alkali-free glass. The process for producing the glass is characterized by sequentially comprising the followings steps: (1), preheating a glass material to 600 DEG C-900 DEG C to form eutectic sinter; (2), heating the sinter to over 1650 DEG C to form molten glass; (3), clearing the molten glass; (4), forming glass.

The invention discloses a dough band type fried puffed food and a preparation method thereof. The preparation method disclosed by the invention improves the problems that dough bands are difficult to shape due to adhesion and substance granules are easy to drop by adding pregelatinized starch to ingredients of a traditional dough band type fried puffed food, and the condition that the dough bands have relatively few bubbles under the condition of ensuring the excellent crispness of finished products when the widths of the dough bands are more than 5mm can be realized by adopting a particular indentation technology, and thus the taste of the finished products is improved; in addition, in the preparation method disclosed by the invention, the continuous frying without interruption is realized by delivering semi-finished products into a fryer to be subjected to immersion type continuous frying by adopting a continuous delivering net belt in industrialized production, and thus the production efficiency under the precondition of ensuring the flavor and the taste of the finished products is greatly improved.

The invention discloses a foaming defect diagnosis method, device and equipment and a storage medium. The method comprises the following steps: acquiring foaming data, gun head data and production data in a foaming process; the foaming data, the gun head data and the production data serve as input data to be input into a pre-trained foaming defect diagnosis model, so that the foaming defect diagnosis model determines basic factors causing foaming defects on the basis of a convolutional neural network in combination with influence factors influencing the foaming effect, and based on a Bayesian causal network, determining an action proportion corresponding to each root factor. According to the technical scheme, the foaming data, the gun head data and the production data obtained in the foaming process are input into the foaming defect diagnosis model, and the model processes the foaming data, the gun head data and the production data in combination with the influence factors influencing the foaming effect; determining the basic factors causing the foaming defect and the action proportion of each basic factor on the foaming defect, and realizing analysis and tracing of the basic factors causing the foaming defect.

The invention discloses a modified polycarboxylic acid composite water reducing agent for a steam-curing-free and steam-pressing-free PHC tubular pile. The modified polycarboxylic acid composite water reducing agent for the steam-curing-free and steam-pressing-free PHC tubular pile consists of the following raw materials in percentages by mass: 30-60% of a polycarboxylic acid water reducing agent and 70-40% of a polycarboxylic acid modified aliphatic water reducing agent, wherein the water reducing rate of the polycarboxylic acid water reducing agent is greater than or equal to 45%, and the polycarboxylic acid modified aliphatic water reducing agent is a polycarboxylic acid modified aliphatic water reducing agent disclosed in the patent of CN100340518. A viscosity reducer and a defoamer can also be added in the modified polycarboxylic acid composite water reducing agent, the addition amount of the viscosity reducer is 1-5% of the total mass of the polycarboxylic acid water reducing agent and the polycarboxylic acid modified aliphatic water reducing agent, and the addition amount of the defoamer is 0.2-1.0% of the total mass of the polycarboxylic acid water reducing agent and the polycarboxylic acid modified aliphatic water reducing agent. The modified polycarboxylic acid composite water reducing agent for the steam-curing-free and steam-pressing-free PHC tubular pile effectively reduces water-binder ratio of concrete, and has characteristics of quick dispersion and low viscidity to meet requirements of strength of concrete of the PHC tubular pile, so that a curing process of normal-pressure steam curing and high-temperature steam pressing for the concrete of the PHC tubular pile is omitted.

The invention discloses a lithium battery diaphragm coating system. The lithium battery diaphragm coating system comprises a stirring tank and a buffer tank, a feeding pipe and a discharging pipe areinstalled on the stirring tank, the feeding pipe is used for injecting slurry into the stirring tank, and the discharging pipe is used for being communicated with a coating machine so as to supply theslurry to the coating machine; the buffer tank is communicated with the coating machine through a return pipe to receive the slurry recovered from the coating machine, the bottom of the buffer box isa slope, and the discharging pipe for discharging the slurry in the buffer tank is arranged at the inclined lower end of the slope; and the discharging pipe is communicated with the feeding pipe. According to the lithium battery diaphragm coating system, the number of bubbles in the slurry for coating a diaphragm can be reduced, and the coating quality of the diaphragm is improved.