143results about How to "Reduce air bubble content" patented technology

The invention relates to a glass clarifier and a glass preparation method. The glass clarifier contains nitrate, sodium sulfate, ceria and stannic oxide, wherein the mass ratio of nitrate to sodium sulfate to ceria to stannic oxide is (0.2-3.0): (1.0-3.0): (0.01-2.0): (0.01-1.5). Thus, the glass clarifier is non-toxic and harmless and is relatively good in clarification effect.

The invention provides a hot press molding device for a carbon fiber enhanced polyether-ether-ketone (PEEK) composite board. The hot press molding device comprises a hydraulic machine, a molding die and a vacuum system. According to the device, a heating unit is separated from the hydraulic machine, and a heating pipe is used for heating the die to achieve a high temperature hot pressing function; by carrying out hot press molding in a vacuum environment, the content of bubbles in resin can be greatly reduced, and the test piece surface smoothness and workpiece performances are improved; a cooling unit is arranged in the die, and cooling speed is regulated by regulating the flow and temperature of high pressure cold air, so as to control the crystallinity of matrix resin and realize flexible selection between high strength and high toughness. Correspondingly, the invention also provides a hot press molding method for the carbon fiber enhanced polyether-ether-ketone (PEEK) composite board. A carbon fiber enhanced polyether-ether-ketone (PEEK) composite board produced by adopting the device and the method disclosed by the invention through hot press molding is simple in production equipment and solves the problems that material internal porosity is large, resin impregnation fiber is insufficient, test piece performance is insufficient, molding cycle is long and the like during production of polyether-ether-ketone resin with high melting point and high viscosity.

The invention discloses a manufacturing technology of a glass fiber/epoxy resin composite material substrate type fiber bragg grating sensor. The manufacturing technology comprises the steps that glass fiber/epoxy resin prepreg is procured to prepare a glass fiber/epoxy resin composite material substrate; a fiber bragg grating is fixed to the glass fiber/epoxy resin composite material substrate; the glass fiber/epoxy resin composite material substrate fixed with the fiber bragg grating is covered with a dry-state glass fiber cloth, vacuum aided filling of liquid epoxy resin is performed, and secondary curing molding is performed. The manufacturing technology adopts the secondary curing molding in the packaging process, the interlayer interface strength is remarkably improved, accordingly the testing precision and stability of the fiber bragg grating sensor are improved, batch production of the fiber bragg grating sensor can be achieved, and the manufacturing technology has wide market prospect and huge economic benefit.

The invention relates to a thick-film and low-foam one-component polyurethane elastomer and a preparation method thereof. The elastomer is prepared from a one-component polyurethane resin, filler, a neutral chemical defoaming agent and other assistants. The preparation method comprises the following steps: firstly mixing the raw materials such as polyether, the filler, a solvent, a plasticizer and the like in a reaction kettle; adding diisocyanate and the solvent to the reaction kettle to evenly mix and stir, and heating to 80-85 DEG C to react for 2 hours; finally adding a catalyst to react for 30 minutes; cooling to 60 DEG C, and adding the neutral chemical defoaming agent; discharging after stirring for 30 minutes. The bubble content of the one-component polyurethane elastomer to which the neutral chemical defoaming agent is added is reduced by 30-80% in comparison with that of the elastomer to which the neutral chemical defoaming agent is not added; the film can be coated 5mm-1cm one time; the storage stability is 3-6 months.

A method for producing a silica glass body having a low bubble content includes melting silica sand in a chamber (62) of a rotating furnace housing (20) to form molten silica. Helium-containing gas is fed into the chamber, both during introduction of the sand and during the heating step. The helium diffuses more readily from the molten silica than other gases, resulting in lower bubble content. The furnace is heated by establishing a gas plasma arc (60) between spaced electrodes (64, 66) within the chamber.

The invention provides liquid crystal substrate glass and a preparation method thereof. The liquid crystal substrate glass consists of the following oxides in percentages by mass: 60.0-65.0% of SiO2, 15.0-18.0% of Al2O3, 8.0-12.0% of B2O3, 6.0-8.0% of CaO, 0.5-2.0% of MgO, 0.5-3.0% of SrO, 0.25-1.30% of BaO, 0.05-0.15% of SnO2 and inevitable impurities. The preparation method comprises the following steps: uniformly mixing the raw materials; melting and clarifying the raw materials and then drawing the raw materials by overflowing to form the liquid crystal substrate glass. The environmentally friendly oxide SnO2 is used as a clarifying agent, alkali metal oxide is not added, and the purpose of eliminating air bubbles on the premise of not polluting the environment is achieved.

The invention discloses tough oil well cement. The cement is characterized by being prepared from components in parts by weight as follows: 100 parts of cement, 1-15 parts of active filler, 1-5 parts of a toughening material, 0.01-0.05 parts of staple fibers, 1-5 parts of an additive, 0.1-0.2 parts of a water educing agent, 1-5 parts of a fluid loss agent, 1-2 parts of an antifoaming agent and 1-5 parts of a retarder. An oil well cement sheath is high in lateral deformation capacity, low in elasticity modulus, high in plastic yielding point and good in elasticity; the oil well cement ring has very high ultimate strain value, can absorb larger impact energy and greatly improves the deformation performance of set cement compared with raw slurry, so that the requirement for cement performance in the oil and gas well development process is met, and cementing quality and follow-up development are guaranteed.

The invention relates to a sintering device and system for preparing quartz glass, relating to the field of preparing quartz glass and mainly aiming at avoiding or reducing the generation of bubbles in preparation of the quartz glass by adopting indirect synthesis method technology, and improving the sintering efficiency of the quartz glass and lowering the cost. The sintering device for preparing quartz glass comprises a furnace body, wherein a vacuumizing channel communicated with a sintering space is also arranged on the furnace body, and used for vacuumizing the sintering space to a negative pressure environment so as to sinter silica loose body in the sintering space, pores in the silica loose body are discharged under the negative pressure environment, and the silica loose body is sintered to transparent quartz glass. According to the sintering device and system for preparing quartz glass, the sintering device for preparing the quartz glass can conduct sintering under the negative pressure environment, and the content of bubbles in the obtained finised quartz glass after sintering can be decreased, so that the quality of the quartz glass product is improved, the whole body is heated and sintered simultaneously, the sintering efficiency of the silica loose body is increased and the cost is lowered.

The invention relates to hydraulic casting equipment with a defoaming function. The hydraulic casting equipment comprises a base, a supporting column, a hydraulic device and a control screen, and further comprises a defoaming mechanism and a protection mechanism, wherein the defoaming mechanism comprises a shaking assembly and an auxiliary assembly, the shaking assembly comprises a first motor, ahalf gear, a rack, a moving frame, a connecting block and a supporting plate, the auxiliary assembly comprises two swing units, the protection mechanism comprises a second motor, a first gear, a lifting plate, a baffle and two control assemblies. According to the hydraulic casting equipment with the defoaming function, through the defoaming mechanism, the supporting plate can drive a casting moldto shake, an ultrasonic wave emitter can be aligned with the casting mold to swing and emit ultrasonic waves for defoaming, so that the content of bubbles in the formed casting is reduced, the production quality of the casting is improved, a control screen can be protected through the protection mechanism, and the practicability and the reliability of the hydraulic casting equipment are greatly improved.

The invention belongs to the technical field of sealant production, and particularly relates to a sealant production method. By the cooperation work of a motor, arcuate connecting shafts, scraping knives and scraping blocks, when materials are in a stirring process, the difference of a speed of a stirring center and a speed of a stirring outside is reduced, so that stirring of the materials is relatively sufficient and uniform, a bubble content in the materials is reduced, and at the same time, linkage of the scraping blocks can clean the arcuate connecting shafts and the scraping knives, so that a rotating speed is further strengthened, and the stirring effect is improved. By the joint work of the arcuate connecting shafts, blades, arc-shaped push rods and coil plates, the coil plates arestraightened to contact with the materials to stir the materials, and at the same time the coil plates can also clean the blades. The propulsive force generated by resetting of the coil plates can clean the arcuate connecting shafts and the scraping knives, and can also change a speed of the stirring center, so that a content of bubbles produced during the stirring process of the materials is reduced.

The invention provides a hydrophilic resin composition and a preparation method thereof. The method comprises the following steps: allowing an epoxy resin to have first contact with a modifier selected from acid anhydride to make the hydroxy group in the epoxy resin react with the acid anhydride group in the modifier; and allowing a mixture obtained through the first contact to have second contact with an alkaline substance in order to make an acid form a salt. The invention also provides an application of the hydrophilic resin composition in the preparation of fracturing propping agents. The fracturing propping agent obtained by coating raw sand with the hydrophilic resin composition has good dispersibility, and do not agglomerate basically; the content of bubbles in a water-based fracturing fluid carrying out the fracturing propping agent is low; and the fracturing propping agent has a high crushing limit, and can effectively prop cracks in order to prevent the closure of the cracks.

The invention relates to a sintering method for preparing silica glass and the silica glass, relates to the field of silica glass preparation and mainly aims to avoid or reduce the generation of bubbles during silica glass preparation through an indirect synthesis method, increase the sintering efficiency of the silica glass and reduce the cost. The method is used for sintering a silica loose body in sintering space. The method comprises the following steps: vacuumizing the sintering space into a negative pressure environment, sintering the silica loose body in the sintering space, discharging air holes in the silica loose body under the negative pressure environment, and sintering the silica loose body into transparent silica glass; cooling the transparent silica glass, thus obtaining a silica glass finished product. In the silica glass finished product obtained after sintering, the content of the bubbles in the silica glass finished product can be reduced, so that the product quality of the silica glass is increased; through integral and simultaneous heating and sintering, the sintering efficiency of the silica loose body is increased, and the cost is reduced.

The invention discloses a preparation method of toughened glass. The preparation method comprises the following steps: (1) mixing 87 to 97 parts of raw materials with 3 to 6 parts of a glass clarifier to obtain a mixture, heating the mixture to the temperature of 1755 to 1765 DEG C to be molten, later lowering to the temperature of 1520 to 1530 DEG C to be clarified for 20 to 25min, then heating to the temperature of 1620 to 1630 DEG C, and lowering the temperature to 1520 to 1530 DEG C to obtain a glass melt, and (2) forming the glass melt; the glass clarifier comprises 3 to 4 parts of nitrate, 0.4 to 0.6 part of tin oxide, 0.3 to 0.5 part of calcium carbonate and 0.1 to 0.2 part of magnesium carbonate, wherein the nitrate comprises the following components in percentage by weight: 5 to 8% of sodium nitrate, 5 to 8% of potassium nitrate, 5 to 8% of magnesium nitrate, 5 to 8% of aluminum nitrate and 68 to 80% of ammonium nitrate. By adopting the preparation method of the toughened glass disclosed by the invention, the content of bubbles in the glass can be effectively reduced.

The invention provides a silk fibroin block material and a preparation method thereof. The preparation method comprises: preparing a silk fibroin aqueous solution; preparing silk fibroin dry powder; dissolving the silk fibroin dry powder in hexafluoroisopropanol to form a silk fibroin fluoroisopropanol solution; transferring the silk fibroin hexafluoroisopropanol solution into an injection device,and standing until gas bubbles are completely released; injecting the silk fibroin hexafluoroisopropanol solution into a porous mold, and standing until the gas bubbles in the solution are completelyreleased; replacing the hexafluoroisopropanol with methanol while carrying out crystallization curing to obtain a silk fibroin solid; replacing the methanol in the silk fibroin solid with water by using a gradient displacement method; and carrying out air drying on the silk fibroin solid, and carrying out cutting shaping to obtain the required block material. According to the present invention, the prepared silk fibroin block material has characteristics of large volume, low gas bubble content, uniform component, controllable molecular weight and controllable mechanical property, and can be widely used in biological implant devices, degradable tableware, toys and other fields.

The invention provides a preparation method of a fracturing propping agent, and the fracturing propping agent prepared by the preparation method. The preparation method of the fracturing propping agent comprises curing of a mixture containing aggregate particles and a laminating adhesive, and the laminating adhesive is a hydrophilic resin composition. A preparation method of the hydrophilic resin composition is as follows: performing first contact of epoxy resin and at least one modifier; and under the conditions being enough to enable an acid to from a salt, performing second contact of a mixture obtained by the first contact and at least one alkaline substance; wherein under the first contact condition, part of epoxy groups in the epoxy resin react with groups capable of providing protons in the modifier. The fracturing propping agent has high crushing resistant strength, has good dispersion in a water base fracturing fluid, and basically does not agglutinate; and the water base fracturing fluid carrying the fracturing propping agent is low in bubble content.

The invention relates to the technical field of materials, and particularly discloses a wood magnesium board and a preparation method thereof. The wood magnesium board is prepared from the following raw materials in percentage by weight: 20-40% of magnesium oxide, 10-20% of a magnesium sulfate solution, 20-30% of wood flour, 0.2-0.3% of metal oxide, 3-4% of non-metal oxide, 1-2% of inorganic salt, 0.5-1% of acid, 0.1-0.5% of a waterproof agent and 1-2% of a modifier. The invention also discloses a preparation method of the wood magnesium board. The preparation method comprises the following steps: accurately metering raw materials; and conducting mixing, stirring, dispersing, metering and paving under a dry process, conducting pre-pressing, carrying out secondary hot press molding, conducting demolding, cutting and sanding in a short time, drying frame pieces, finally finely cutting and sanding a finished product, and packaging and delivering a finished product. The production cost is effectively reduced, the production period is shortened, and the plate is high in strength, good in toughness, environment-friendly and non-toxic.

Disclosed is a flow separator, typically for use in separating liquid from gas in a flowing mixture of liquid and gas, e.g. water, oil and gas in a hydrocarbon well production fluid pipeline, the separator having a swirl generator disposed at the inlet to a cylindrical separation chamber and the separation chamber having an elongate liquid extraction slot formed along its wall, such that in operation the swirling flow centrifugally pushes the liquid towards the wall of the separation chamber to exit the separation chamber through the extraction slot into a collection chamber which may allow the return of the extracted liquid back into the main flow using a U-shaped tube.

The invention discloses a method for heating and melting a precast shaped filler in sapphire crystal growth, which comprises the following steps: starting a heating system to heat from 25 DEG C to 1650 DEG C, wherein the heating gradient is 200 DEG C/h; and after the temperature reaches 1650 DEG C, changing the temperature increase gradient to 30 DEG C/h, and further heating to 2000 DEG C until a block material is completely molten. The precast shaped filler disclosed by the invention causes less bubble defects in comparison with a crystal block treated by a flame method; the packed density of the precast shaped filler can be up to 2.6-2.8 g/cm<3>; and more materials can be filled under the condition of not changing the size of a crucible, thereby meeting the requirements for the density of the raw material in large-size sapphire crystal growth in China at present.

The invention discloses a method for preparing a trimmer, which comprises: fixing the grinding ends of a plurality of abrasive particles on a lower die by adhesive, pouring liquid resin, allowing the liquid resin to solidify to fixedly combine with the plurality of abrasive particles and removing the adhesive adhered on the grinding ends. During the liquid resin pouring operation, the plurality of abrasive particles do not shift and have the same protruding height, and the grinding end face of the trimmer is flatter; and the resin combined with the plurality of abrasive particles, before solidification, is subjected to pressurization and vacuumizing to reduce the air bubble content of the resin and increase the holding force of the resin for the plurality of abrasive particles, so that the plurality of abrasive particles do not strip when trimming a grinding pad.

The invention discloses a pultrusion material production system and method and a glass fiber reinforced plastic pultrusion strip. The pultrusion material production system comprises a yarn supply system, an impregnation system, a curing system and a traction mechanism; the impregnation system comprises a first impregnation area, a second impregnation area and a pultrusion area, and a draining plate is arranged between the first impregnation area and the second impregnation area; the first impregnation area is used for primary resin impregnation of fibers, the draining plate is used for scraping part of primary resin impregnated in the fibers, and the second impregnation area is used for secondary resin infiltration of the fibers; and the fibers penetrate through the pultrusion area to be extruded into a fiber-resin material in a preset shape. According to the pultrusion material production system, bubbles generated during secondary resin impregnation of the fibers are few, the contentof bubbles in glass fiber reinforced plastics obtained through pultrusion is reduced, and the strength of the glass fiber reinforced plastics is high.

The invention discloses an automobile inner door armrest assembly mold system which comprises an injection machine, at least two foaming molds, a turnplate and a turnplate motor. The turnplate motor is connected to the turnplate to drive the turnplate to rotate autologously. The foaming molds are uniformly distributed at the edge of the upper side face of the turnplate; and the injection machine is arranged on one side of the turnplate. The automobile inner door armrest assembly mold system disclosed by the invention is simple in structure and easy to implement, and can achieve continuous injection processing, reduce the bubble content in a finished product, enhance the processing efficiency and reduce the rejection rate of the products.