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84results about How to "Reduce the probability of air bubbles" patented technology

Photovoltaic photo-thermal dual-curing POE packaging adhesive film and preparation method thereof

The invention discloses a photovoltaic photo-thermal dual-curing POE packaging adhesive film and a preparation method thereof. The packaging adhesive film comprises a POE polyolefin elastomer, a freeradical thermal initiator, a photoinitiator, an acrylamide assistant cross-linking agent, an acrylate assistant cross-linking agent, a light stabilizer, an antioxidant, a macromolecular coupling agent, tackifying resin, an antifoaming agent and a leveling agent. The packaging adhesive film can realize rapid low-temperature curing, has the advantages of high light transmittance, high adhesive strength, low shrinkage rate, low water permeability, no bubbles, high efficiency, low cost, easiness in reworking and the like after being laminated, and is suitable for an efficient battery assembly which is sensitive to temperature or has a high requirement for the packaging rate; compounding of POE with different melt indexes improves the fluidity, reduces the bubble rate and guarantees that glue overflowing and battery string spacing deviation do not occur; and the macromolecular coupling agent is added through a chemical grafting method, so that the long-term bonding reliability is improved.
Owner:JIANGSU LUSHAN PHOTOVOLTAIC TECH +1

A kind of LED molding sealing device and sealing method thereof

The invention discloses an LED molding sealing device and a sealing method thereof. The device comprises an upper mold, a lower mold and a glue channel partition structure. The upper part of the upper mold is provided with a glue injection port, the upper part of the lower mold is provided with a cavity, and the glue injection port The cavity is connected to the mold cavity through the glue channel set on the lower part of the upper mold and the upper part of the lower mold. The upper mold and the lower mold are locked by the locking parts. It also includes the glue channel partition structure set in the glue channel. The glue channel partition structure is shifted to connect the rubber channel. When the glue injection is completed, the glue thrust disappears, and the glue channel partition structure is reset to automatically isolate the glue channel. The present invention is applicable to the LED sealing field. The present invention not only has a simple structure and is convenient to use, but also can well maintain the pressure of the glue in the mold cavity when the sealing is completed, avoiding volume shrinkage during the heat curing process of the sealing glue, and ensuring the sealing effect. The colloid of the finished product is complete, increasing the yield of the molded product.
Owner:GUANGDONG VTRON TECH CO LTD

Chemical reaction kettle for solid-liquid reaction

The invention discloses a chemical reaction kettle for solid-liquid reaction, and particularly relates to the technical field of chemical equipment, the chemical reaction kettle comprises a kettle body, support legs are fixedly connected to two sides of the bottom end of the kettle body, a liquid outlet pipe is fixedly connected to the middle of the bottom end of the kettle body, and a water tank is fixedly connected to one side of the kettle body. The spraying mechanisms are arranged on the two sides of the interior of the kettle body, and a connecting base is fixedly connected to the top end of the kettle body. By arranging a material homogenizing plate, a feeding port, a fixed seat, a driving motor and a first connecting rotating shaft, when the reaction kettle is used, materials are poured in from the feeding port and enter the kettle body through the fixed seat, the driving motor is started, the driving motor drives the material homogenizing plate to rotate through the first connecting rotating shaft, and the material homogenizing plate is in a windmill shape and has the effect of uniformly conveying the materials; and the multiple sets of material uniformizing plates are arranged at equal intervals, the situation that too many materials are poured at a time, and a discharging opening formed in the bottom of the fixing base is blocked is avoided, and the use efficiency of equipment is improved.
Owner:黄声宇

Silicon additive for melting and casting aluminum alloy and preparation method of silicon additive

The invention discloses a silicon additive for melting and casting an aluminum alloy and a preparation method of the silicon additive, and aims at solving the problems that the practical yield is low, components cannot be adjusted precisely and a great deal of energy is consumed as the ordinary silicon element is easy to oxidize when the aluminum alloy is molten and smelted. The silicon additive consists of silicon powder, a pure aluminum tube and a pure aluminum foil. The preparation method comprises the following steps: sealing one end of the pure aluminum tube by using the pure aluminum foil, filling the pure aluminum tube with the silicon powder from the other end of the pure aluminum tube, and further sealing by using the pure aluminum foil, thereby obtaining the silicon additive. The silicon additive disclosed by the invention is low in melting temperature, that is, the silicon additive can be completely molten at 730 DEG C; the melting speed is high, that is, the melting speed is 25-30% higher than that of a metal silicon block which is used at present; the practical yield of the silicon additive is high, that is, the practical yield of the prepared silicon additive is greater than 90%; an aluminum alloy which is uniform and precise in components is easy to prepare, and the silicon additive is environment-friendly and pollution-free when being used as no element such as potassium, sodium or fluorine is added.
Owner:哈尔滨东盛金材科技(集团)股份有限公司

A kind of photothermal dual curing poe encapsulation adhesive film for photovoltaic and preparation method thereof

The invention discloses a photothermal dual curing POE encapsulation film for photovoltaics and a preparation method thereof. The encapsulation film comprises the following components: POE polyolefin elastomer, free radical thermal initiator, photoinitiator, acrylamide auxiliary Crosslinking agent, acrylate co-crosslinking agent, light stabilizer, antioxidant, macromolecular coupling agent, tackifying resin, defoaming agent and leveling agent. The encapsulating adhesive film of the invention can realize rapid low-temperature curing, and has the advantages of high light transmittance, high adhesive force, low shrinkage rate, low water permeability, no bubbles, high efficiency, low cost, easy rework and the like after lamination, and is suitable for For high-efficiency battery modules that are sensitive to temperature or have high requirements for packaging speed, due to the compounding of POEs with different melt indices, the fluidity is improved, the bubble rate is reduced, and at the same time, it ensures that no glue overflow and the offset of the battery string spacing occur; large The molecular coupling agent is added by chemical grafting, which improves the long-term bonding reliability.
Owner:JIANGSU LUSHAN PHOTOVOLTAIC TECH +1

Rubber and plastic product continuous production system and production method

The invention provides a rubber and plastic product continuous production system and a production method. The production system comprises an insulation conveying ring line for conveying empty molds, an inlet mold conveying door arranged on the insulation conveying ring line and used for conveying the empty molds to the insulation conveying ring line, a vacuum pouring device arranged on one side ofthe insulation conveying ring line, and a mold opening and closing device and a vulcanizing device arranged on the other side of the insulation conveying ring line; and a product conveying line for conveying vulcanized rubber and plastic products is arranged on one sides of the mold opening and closing device and the vulcanizing device. The insulation conveying ring line, the vacuum pouring device, the mold opening and closing device and the vulcanizing device are reasonably arranged in sequence, and the connecting operation of all the devices is scientific and reasonable, so that the operability is high, and the efficiency is high; and the whole production line is controlled by a controller in an unified manner, and an unmanned factory is built, so that the intelligence degree is high, the labor cost is saved, the working efficiency is high, and the product quality is effectively guaranteed.
Owner:青岛海琅智能装备有限公司

Cathode and workpiece cooperative pulse dynamic precise electrolytic machining method

The invention relates to a cathode and workpiece cooperative pulse dynamic precise electrolytic machining method, and belongs to the technical field of electrolytic machining. The device is mainly characterized in that a workpiece is vertically mounted in a clamp, a blade basin cathode and a blade back cathode perform reciprocating vibration while being fed oppositely, and the workpiece performs cooperative vibration in the vertical direction. The tool cathodes on the two sides are always fed oppositely, in a single dissolution period, a power source is applied when the tool cathodes vibrate to be close to the workpiece, the workpiece is located at the machining position, and the material is dissolved. When power is cut off, the cathodes on the two sides vibrate and return, the workpiece also vibrates and returns in the vertical direction, materials are not dissolved, and electrolysis products are discharged. Through vertical installation of the workpiece, the bubble discharging speed can be increased, the bubble rate at an outlet is reduced, and the influence of bubbles on machining gap distribution is reduced. The flushing effect of the electrolyte on products attached to the surface of the workpiece is enhanced through the cooperative vibration of the cathodes and the workpiece, and discharge of the electrolytes is promoted; and a disturbance effect is applied to a flow field through up-down movement of the workpiece in a flow field, so that the uniformity of bubbles and temperature is improved, and the allowance distribution uniformity of the workpiece is improved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Method for reducing welding bubble rate of QFN chip and steel mesh structure obtained by applying method

ActiveCN108637517AReduce welding bubble rateThe amount of tin increasedWelding apparatusSolder feeding devicesComputer scienceTest group
The invention relates to a method for reducing a welding bubble rate of a QFN chip and a steel mesh structure obtained by applying the method. The method comprises the following steps of: judging factors of generating a bubble rate to obtain several main factors; separately giving out two different first fixed data by each factor; separately selecting a first fixed datum by each factor in the several factors to define a first test group, thereby obtaining a bubble rate value of the corresponding first test group; obtaining important factors which affect the bubble rate according to the bubblerate value; separately giving out multiple different second fixed data by each important factor according to the important factors; separately selecting a second fixed datum by each important factor to form a second test group to obtain a final bubble rate value of the corresponding second test group; and obtaining final factors which affect the bubble rate value according to the final bubble ratevalue. On the basis of ensuring reliability of a welding spot by the method, the shape of the steel mesh is improved, so that tin amount is increased, and therefore, the bubble rate generated duringwelding is effectively reduced.
Owner:SHANGHAI VEI SHENG AUTO PARTS MFG CO LTD

Spiral type heating dryer with materials being loaded separately

The invention provides a spiral type heating dryer with materials being loaded separately, and belongs to the field of industrial dryers. The spiral type heating dryer comprises an outer drying cylinder, an inner drying cylinder and a supporting column, wherein the supporting column supports and is fixedly connected with the outer drying cylinder; the outer drying cylinder comprises an outer cylinder body, a top cover and a cylinder bottom, wherein openings are formed in the upper end and the lower end of the outer cylinder body, the top cover is fixedly connected with the upper end of the outer cylinder body and seals the opening at the upper end of the outer cylinder body, and the cylinder bottom is fixedly connected with the lower end of the outer cylinder body and seals the opening atthe lower end of the outer cylinder body; a strut is mounted in the center of the cylinder bottom, a suction fan is mounted at the top end of the strut, and the top end of the upper part of the side wall of the outer cylinder body is provided with a material inlet and a hot air pipeline which penetrate through the side wall of the outer cylinder body; the inner drying cylinder and the outer cylinder body are arranged coaxially; a guiding plate with a downward spiral is arranged on the area between the inner wall of the outer cylinder body and the outer wall of the inner drying cylinder, and agroove with an upward spiral is formed in the inner wall of the inner wall of the inner drying cylinder; and a first heating element is arranged in the cylinder wall of the inner drying cylinder, anda second heating element is arranged in the guiding plate. According to the double spiral structure of the spiral type heating dryer, damp materials can be quickly and evenly dried, and adhesion and hardening of the materials in the dryer is not easy to occur.
Owner:兰溪市捷喜食品加工技术有限公司
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