50results about How to "Good defoaming" patented technology

The invention relates to the technical field of defoaming agents, and discloses a modified organic silicon defoaming agent and a preparation method thereof.The modified organic silicon defoaming agent takes hydrogen-containing silicone oil as a base material, polyether modified carboxymethyl cellulose and modified white carbon black are used for modifying the base material to obtain the modified organic silicon defoaming agent, and after the white carbon black is modified, the modified organic silicon defoaming agent is prepared. According to the present invention, the polyether modified organic silicon is uniformly and stably distributed in the system so as to improve the defoaming efficiency, the carboxymethyl cellulose has characteristics of excellent thickening property, excellent film forming property and excellent stability, can improve the consistency of the organic silicon defoaming agent, can help to form the stable film layer, can easily adhere and disperse the active component of the defoaming agent, and can improve the defoaming effect; the surface property of the modified organic silicon is improved, the modified organic silicon has better hydrophilicity and wettability, the structural stability of the silicone oil is improved, all the components have a synergistic effect, and the prepared modified organic silicon has excellent defoaming and foam inhibiting effects, meanwhile, the dispersity is good, the heat resistance and stability are improved, and the application range is wide.

The invention provides a nano foam scrubbing agent suitable for environments with various temperatures and mineralization degrees as well as a preparation method and application of the nano foam scrubbing agent. The nano foam scrubbing agent comprises an anionic surfactant, a nonionic surfactant, a zwitterionic surfactant, foam stabilizing particles and a solvent, the total mass concentration of the anionic surfactant, the nonionic surfactant and the zwitterionic surfactant in the nano foam scrubbing agent is 0.1-1.0 wt%, and the mass concentration of the foam stabilizing particles is 0.1-0.5 wt%; the mass ratio of the anionic surfactant to the nonionic surfactant to the zwitterionic surfactant is (10-30): (15-20): (15-25). The foam scrubbing agent disclosed by the invention has relatively good foaming, foam stabilizing and liquid carrying capacities at 35-95 DEG C in a mineralization degree range of 10000-50000 mg / L, has very good salt resistance and calcium and magnesium ion resistance, and can adapt to environments with various temperatures and different mineralization degrees.

The invention discloses a mineral casting prepared based on modified epoxy resin. Diacid is used for modifying epoxy resin to enhance the temperature resistance of the epoxy resin. The compressive strength of the mineral casting and the bonding strength between the epoxy resin and the aggregate are enhanced in a manner of combining the curing agent and post-curing treatment; by adding the dispersed nano silicon dioxide into the epoxy resin, the damping ratio of the mineral casting is effectively improved, and the shock absorption performance of the mineral casting is enhanced.

The utility model discloses a reverse osmosis membrane chemical cleaning wastewater defoaming device, which belongs to the technical field of sewage treatment, and comprises a mounting plate, the upper surface of the mounting plate is fixedly connected with a sewage pool, the upper surface of the sewage pool is fixedly connected with a fixed plate, the lower surface of the fixed plate is fixedly connected with a protective shell, and the protective shell is fixedly connected with a water tank. The reverse osmosis membrane chemical cleaning wastewater defoaming device comprises a fixed plate, a protective shell is arranged in the fixed plate, a pressure sensor is arranged in the protective shell, a movable groove is formed in the lower surface of the protective shell, a limiting rod is fixedly connected to the lower surface of the fixed plate, and a sliding sleeve is connected to the surface of the limiting rod in a sleeving mode. When a worker uses the device to eliminate foam, under the cooperation of a pressure sensor, a floating plate and an impact block, the liquid level in the sewage pool can be monitored in real time, so that the foam in the sewage pool can be eliminated in time.

The utility model provides an epoxy resin defoaming device which comprises a tank body, the upper end of the tank body is connected with an upper cover, and the upper cover seals an opening in the upper end of the tank body to form a working cavity; one end of the vacuum pipe is communicated with the working cavity, and the other end of the vacuum pipe is communicated with an air inlet end of vacuum equipment; the feeding pipe is located at the upper end of the upper cover, and the feeding pipe is communicated with the working cavity; a stirring paddle is fixedly arranged at the lower end of the rotating shaft, a liquid distribution disc corresponding to the feeding pipe is arranged at the upper end of the rotating shaft, and the rotating shaft is correspondingly provided with a driving assembly for driving the rotating shaft to rotate. The device has the advantages that materials enter the working cavity through the pump flow outlet and the feeding pipe, the motor drives the rotating shaft, the liquid distribution disc and the stirring paddle to rotate, the materials fall on the liquid distribution disc and move towards the outer side of the liquid distribution disc under the centrifugal effect, in the process, the materials are unfolded into a thin film, and in the negative pressure state, the thickness of the materials in the thin film state is small, so that the materials are uniform in thickness. Bubbles are convenient to separate, and the defoaming efficiency is improved.

The invention belongs to the technical field of synthesis of ether compounds, and discloses a preparation method and application of low-foam multi-block polyether. The preparation method comprises the following steps: mixing an initiator with a basic catalyst, heating, dropwise adding first ethylene oxide, and carrying out primary reaction and primary curing; after the primary curing is finished, adding epoxide to carry out secondary reaction and secondary curing; after the secondary curing is finished, adding second ethylene oxide to carry out third reaction and third curing; and finally, degassing and neutralizing to prepare the low-foam multi-block polyether. The second ethylene oxide accounts for 25-55% of the total mass of the first ethylene oxide and the second ethylene oxide; the epoxide comprises propylene oxide, a mixture of ethylene oxide and propylene oxide, or a propylene oxide-ethylene oxide-propylene oxide block structure. The multi-block polyether prepared by the invention not only can meet the working temperature of wet cleaning of chips, but also has the advantages of few byproducts, low foaming and excellent defoaming performance.

The utility model relates to the technical field of defoaming, and discloses a defoaming device for wet process of an integrated circuit, which comprises a box body, an inner groove and an outer groove are arranged on the box body, a hole is arranged at the top end of the box body, a defoaming device is arranged at one side of the top end of the outer groove close to the hole, and a guide plate is arranged at the top end of the outer groove. According to the utility model, the 45-degree guide plate and the defroster are introduced, so that a good defoaming effect can be effectively and quickly achieved, quality problems such as electroplating pinholes and water marks caused by bubbles in a wafer wet process are avoided, and production line process troubles and environmental pollution caused by foams generated by liquid medicine are eliminated; the method can be widely applied to defoaming of various wafer wet processes.

The invention provides a defoaming agent for digestive endoscopy as well as a preparation method and a use method thereof, and belongs to the technical field of medicines. The defoaming agent comprises 1%-10% of organic silicone oil and 90%-99% of polyethylene glycol; the preparation method comprises the following steps: weighing the organic silicone oil and the polyethylene glycol according to a set proportion, and respectively heating to 75-85 DEG C to form a hot melt; carrying out isothermal mixing on the two components to obtain a mixed hot melt, and carrying out intermittent shearing and stirring in a wall breaking machine to obtain an emulsified melt; flatly spreading the emulsified molten liquid in a pre-cooled container, sealing a cover, and freezing to obtain a white waxy sheet block; and crushing and sieving the white waxy sheet blocks to obtain white organic silicone oil dry milk powder, namely the defoaming agent. The method comprises the following steps: adding water into a defoaming agent and uniformly mixing to prepare a silicone oil emulsion before digestive endoscopy; the composition is orally taken or sprayed on an examined part. The dry emulsion type defoaming agent provided by the invention is simple in formula, free of additives, free of any potential safety risk, safe and reliable, good in stability and excellent in defoaming effect.

The present invention belongs to the technical field of polyester polyol preparation, and specifically relates to a method for synthesizing polyester polyol for solvent-resistant rubber rollers. The polyester polyol is prepared from raw materials in parts by weight: 31-40 parts of diols, 53-63 parts of dibasic acids, 4-6 parts of organosilicon compounds, 2.0-2.5 parts of modification aids, 0.1-0.5 parts of modified nanographene, 0.01-0.05 parts of antioxidant aids, and 0.003-0.008 parts of catalysts. The present invention prepares the polyester polyol for solvent-resistant rubber rollers by reasonably selecting and proportioning the raw materials and dosages, and the components cooperate with each other to jointly improve the comprehensive performance of the prepared polyester polyol material, improve its solvent resistance and service life, and the prepared downstream products have good mechanical properties and solvent resistance; at the same time, the viscosity of the prepared polyester polyol is moderate, which is conducive to improving the degassing problem when producing polyurethane printing rubber rollers.

The invention discloses a modified organic silicon defoaming agent as well as a preparation method and application thereof, and belongs to the field of papermaking defoaming agents. The preparation method comprises the following steps: firstly, carrying out addition reaction on hydrogen-containing silicone oil, alkyne and enol to obtain an alkyne modified organic silicon defoaming agent intermediate; performing high-temperature phase inversion emulsification on the alkyne modified organic silicon defoaming agent, docosanol, octadecanol and an emulsifier to obtain the alkyne modified organic silicon defoaming agent. The modified organic silicon defoaming agent obtained by the preparation method disclosed by the invention is applied to a papermaking section, not only can quickly eliminate foams on the surface of a system, but also can remove small bubbles attached to the surfaces of fine fibers in pulp, so that the gas content of a paper machine system is reduced, the operation efficiency of a paper machine is improved, and the modified organic silicon defoaming agent has the characteristics of no toxicity, no harm, simple process and the like.

According to the buried copper plate manufacturing process disclosed by the invention, browning treatment is carried out by using a specific browning solution, so that the browning effect can be effectively enhanced, and the bonding force between a browning film and epoxy resin is improved; by using the heat-resistant curing agent, the flexibility of the epoxy resin can be enhanced while the heat resistance of the epoxy resin is enhanced, and the thermal shock resistance of the epoxy resin is effectively improved; by using the composite enhanced defoaming agent, bubbles during curing of the epoxy resin are effectively reduced, so that the heat conductivity coefficient and the bonding strength of the epoxy resin are improved, and the performance of the buried copper plate is enhanced.

The utility model relates to a tray, concretely is a kind of anti-static porous ventilative wear-resisting non-chip tray, the tray includes tray main body, anti-chip hardware insert and indicates loading product state color block, tray main body includes the disc body in cuboid, is formed with accommodating groove in the upper end surface of disc body, is provided with multiple different size ventilative round hole in accommodating groove, multiple assembly clamping holes are arranged in the edge position of disc body in accommodating groove, inverted hook clamping block is arranged in the periphery of disc body, wherein anti-chip hardware insert is arranged in the edge position of tray main body, and anti-chip hardware insert includes support strip.The anti-static porous ventilative wear-resisting non-chip tray, TN / STN / FSTN / TFT liquid crystal display module on its tray, TP touch screen module, OLED display module, Minoled module maximumly reduce the adhesion of Partical, greatly reduce the pollution received by dust-free clean room, improve the yield and efficiency of non-foreign matter assembly.

The invention provides biomass cotton cellulose based on waste cotton textiles and a preparation method thereof, and the method comprises the following steps: crushing the waste cotton textiles, sterilizing, disinfecting, drying, dipping in alkali liquor and cooking, adding a DES eutectic solvent, mixing, pulping the obtained material, bleaching, desanding, concentrating and papermaking to obtain the biomass cotton cellulose. Wherein a metal chlorate catalyst and an auxiliary agent are added during cooking. According to the method, the waste cotton textile is adopted as a raw material, and the cotton cellulose with excellent performance is prepared by performing high-added-value recovery on the waste cotton textile, so that the environmental problem caused by the waste cotton textile can be effectively relieved, and the resource waste is reduced. Meanwhile, the production cost of the cotton cellulose can be reduced, and the problem of insufficient production raw materials of existing biomass cellulose products is solved.

The invention provides a defoaming agent composition as well as a preparation method and application thereof. The defoaming agent composition comprises the following components in percentage by mass: 2-5% of simethicone, 0.5-1.5% of a stable thickener, 0.8-6% of a surfactant, 0.5-1.5% of a natural product and the balance of pharmaceutical water, wherein the sum of the components is not more than 100%. The preparation method of the defoaming agent composition comprises the following steps: weighing a proper amount of thickening agent, dissolving the thickening agent in pharmaceutical water, and uniformly stirring to form a stabilizer solution; weighing a proper amount of a surfactant, dissolving the surfactant in pharmaceutical water, and uniformly stirring to form a surfactant solution; mixing the stabilizer solution with the surfactant solution, adding a proper amount of a natural product, and stirring at room temperature for a first preset time to form a uniform water-phase mixture; and adding 30% simethicone emulsion into the water-phase mixture, and cooling the obtained mixture to room temperature to obtain the defoaming agent emulsion. The problem of foam generated in the cell culture process can be solved, and the cell culture efficiency and quality are improved.

The present invention provides a branched modified silicone ether defoamer and a preparation method and application thereof. The branched modified silicone ether defoamer of the present invention comprises the following components in parts by weight: 100 parts of polyether modified silicone oil, 5 to 15 parts of low-viscosity hydroxy silicone oil, and 1 to 10 parts of filler; wherein the polyether modified silicone oil is a three-arm or four-arm branched polymer formed by connecting a polyether as shown in formula I and a polydimethylsilicone oil as shown in formula II through a carbon chain, wherein (a+b)>c: #imgabs0#

The invention relates to a casting system and a casting process for aluminum alloy castings, and relates to the technical field of casting of metal castings, the casting system comprises a fixing frame, a casting tank fixed to the fixing frame, two agent storage barrels and a plurality of agent feeding pipes, and the agent storage barrels and the agent feeding pipes are fixed to the casting tank; the agent storage barrel on the right side is a thickening agent feeding tank, the agent feeding pipes are divided into two groups, the two groups of agent feeding pipes are symmetrically distributed on the casting tank, the agent feeding pipes on the left side are defoaming agent feeding pipes, and the agent feeding pipes on the right side are thickening agent feeding pipes; the casting tank is provided with a processing mechanism used for stirring and forming casting liquid, and the processing mechanism comprises a stirring part and a mold part. The adding amount and the adding speed of the defoaming agent and the thickening agent can be controlled according to the viscosity and the temperature of the casting liquid in different height directions of the casting tank, the defoaming agent and the thickening agent can be added to different height positions of the casting tank, and the defoaming and improving effects of the casting liquid are guaranteed.

The invention provides modified aluminum hydroxide as well as a preparation method and application thereof, and the preparation method of the modified aluminum hydroxide comprises the step of mixing aluminum hydroxide and a modifier in water to form the modified aluminum hydroxide, the modifier is selected from one or more of the following components: poly (C2-C12 olefin) monohydric alcohol or polyhydric alcohol, and cellulose containing one or more C1-C16 hydroxyalkyl groups. The modified aluminum hydroxide prepared by the method disclosed by the invention can be used as a dispersing agent to remarkably inhibit foaming in the polymerization reaction process of vinyl chloride, so that the polymerization reaction process is ensured to be smoothly carried out, and the quality of a polyvinyl chloride product is remarkably improved.

The invention belongs to the technical field of foam adhesive tapes, and provides a PE foam double-sided adhesive tape and a preparation process thereof, the PE foam double-sided adhesive tape sequentially comprises a pressure-sensitive adhesive layer, a PE foam layer, a pressure-sensitive adhesive layer and a release layer from top to bottom; the pressure-sensitive adhesive is prepared from the following raw materials in parts by weight: 20 to 25 parts of butyl acrylate, 20 to 25 parts of 2-ethylhexyl acrylate, 6 to 9 parts of methyl methacrylate, 8 to 16 parts of hydroxyethyl acrylate, 3 to 5 parts of 3-methacryloxypropyltrimethoxysilane, 1 to 4 parts of an emulsifier, 0.3 to 0.8 part of an initiator and 3 to 6 parts of modified magnesium hydroxide. According to the PE foam double-sided adhesive tape provided by the invention, the structure and the thickness of each layer are effectively regulated and controlled, so that the manufactured PE foam double-sided adhesive tape is not easy to deform, has a good shockproof buffering effect, and is excellent in adhesive force and high-temperature retentivity at the same time.

The invention discloses a water-based epoxy floor paint added with sodium silicate and a preparation method thereof, and relates to the technical field of preparation of water-based epoxy floor paints.The water-based epoxy floor paint is prepared from 600-1200 parts of deionized water, 450-600 parts of water-based epoxy resin, 100-180 parts of curing agent, 80-120 parts of pigment, 40-70 parts of sodium silicate, 40-65 parts of propylene glycol monomethyl ether and 5-15 parts of auxiliaries. According to the water-based epoxy floor paint added with sodium silicate and the preparation method of the water-based epoxy floor paint, the wear resistance and surface hardness of the prepared water-based epoxy floor paint are improved by optimizing the formula of the water-based epoxy floor paint, particularly, the sodium silicate is added, so that the compactness and hardness of a floor paint film are obviously improved, and pretreatment is performed before the sodium silicate is added, so that the water-based epoxy floor paint is more environment-friendly. The deionized water is used as a dissolving medium to prepare the sodium silicate dispersion liquid with the solid content of 20%, so that agglomeration or precipitation caused by direct use of sodium silicate in the coating is avoided, and the uniformity of the cured floor paint is facilitated.

The utility model relates to the technical field of floor paint mixing, in particular to stirring equipment for floor paint mixing, which comprises a shell, a stirring mechanism is rotatably connected in the shell and connected with a defoaming component, an exhaust mechanism is connected to the top of the shell, and the stirring mechanism, the defoaming component and the exhaust mechanism are matched with one another. The defoaming assembly comprises a guide plate, the bottom of the guide plate is rotationally connected with a stirring plate, the stirring mechanism comprises a connecting shaft and two connecting rods which are rotationally connected in the shell, the guide plate is in sliding connection with the connecting shaft and the connecting rods, the stirring plate and the connecting shaft synchronously rotate, the middle of each connecting rod is fixedly connected with a lead screw, and the lead screw is fixedly connected with the bottom of the shell. Openings are formed in the two sides of the connecting shaft, the lead screws are consistent with the openings in height and level, and a cavity is formed in the connecting shaft. According to the floor paint processing device, bubbles generated during processing can be effectively eliminated, and the processing quality of floor paint is improved.

The utility model discloses a polycarboxylate superplasticizer production reaction kettle which comprises a shell, the upper end face of the shell is fixedly communicated with a liquid inlet, and the lower end face of the shell is fixedly communicated with a liquid outlet; a servo motor is fixed to the upper surface of the shell through bolts, a rotating shaft is fixed to the output end of the servo motor, a sliding groove is formed in the outer side face of the rotating shaft, and a connecting sliding block is slidably connected into the sliding groove; the outer end of the connecting sliding block is fixed to the inner wall of a lantern ring, a rotating rod is fixed to the outer side face of the lantern ring, a floating ball is embedded in the rotating rod, and the upper end and the lower end of the floating ball penetrate through the rotating rod. The polycarboxylate superplasticizer production reaction kettle not only can eliminate bubbles generated by liquid in the reaction kettle so as to avoid the phenomenon of boiling of the reaction kettle, but also achieves the effect of self-adjustment, when the horizontal heights of the liquid are different, manual adjustment is not needed, meanwhile, heat energy recycling is achieved, and heat energy waste can be effectively reduced.

The invention provides a preparation method of a modified bio-based polyether defoaming agent, and belongs to the technical field of chemical additives. The invention relates to a preparation method of a modified bio-based polyether type defoaming agent. The defoaming agent is prepared by uniformly mixing the following components in parts by mass: 55-75 parts of modified castor oil polyether A and 18-32 parts of modified glucose polyether B, and 4-16 parts by mass of modified fatty alcohol polyether C. The defoaming agent obtained by the method has good defoaming and foam inhibition effects in a water-based system and an oil-based system, has good mixing intersolubility with silicon paste, is stable in storage and does not stratify.

The invention belongs to the technical field of implantation medical instruments, and relates to a low-migration high-transparency anti-adhesion medical PVC (polyvinyl chloride) paste as well as a preparation method and application thereof. The low-migration high-transparency anti-adhesion medical PVC paste comprises the following main components: 100 parts of anti-adhesion PVC resin powder, 60-100 parts of a plasticizer, 1-3 parts of a stabilizer, 0.4-0.7 part of a defoaming agent and 0.1-0.4 part of a rheological additive. The preparation method comprises the following steps: firstly, uniformly mixing the plasticizer, the stabilizer and the defoaming agent to obtain a mixture A; adding anti-adhesion PVC resin powder into the mixture A, and uniformly mixing to obtain a mixture B; and finally, adding a rheological additive into the mixture B, uniformly mixing, filtering to remove impurities, and fully and uniformly mixing in vacuum, so that the preparation method is simple and easy to operate. The paste is injected into a trachea cannula provided with a spring and is heated and cured to obtain a reinforced trachea cannula, so that the catheter can be endowed with excellent anti-adhesion and antibacterial properties, and the clinical infection risk is greatly reduced; the hydrophilic property is high, and the clinical user experience is improved.

The invention relates to the field of natural gas decarburization, and discloses an absorption solvent for natural gas decarburization as well as a preparation method and application thereof. Wherein the absorption solvent comprises a main agent, an activating agent and a defoaming agent, the main agent is selected from N-methyldiethanolamine, the activating agent is selected from one or more of diethanol amine, triethanolamine, methyl monoethanolamine, piperazine, hydroxyethyl piperazine, 2-piperidine ethanol and tert-butylamino diethanol amine, and the defoaming agent is selected from one or more of diethanol amine, triethanolamine, methyl monoethanolamine, piperazine, hydroxyethyl piperazine, 2-piperidine ethanol and tert-butylamino diethanol amine. The defoaming agent is a composite defoaming agent consisting of dimethyl silicone oil, hydrophobic silicon dioxide and dimethylformamide. The stability of the decarburization absorption solvent for natural gas decarburization is guaranteed, and a guarantee is provided for normal and stable operation of a decarburization system.

The invention relates to the technical field of chemical additives, in particular to a preparation method of a low-concentration organic silicon emulsion defoaming agent applied to foam treatment of an alkaline degreasing agent. The high-temperature-resistant silicone rubber comprises the following raw material components: polyether modified siloxane, silicon polyether emulsion, dimethyl silicone grease, low-hydrogen-content silicone oil, allyl polyoxyethylene polyoxypropylene ether, trihydroxy polyoxypropylene ether, methacrylate and a chloroplatinic acid catalyst. The preparation method comprises the following steps: enabling low-hydrogen-content silicone oil and an emulsifier AEO-3 to react with allyl polyoxyethylene polyoxypropylene ether and methacrylate under the action of a catalyst to generate polyether co-modified silicone oil; secondly, reacting dodecyl dimethyl tertiary amine, trihydroxy polyoxypropylene ether and MTES under the action of a catalyst to generate polyether modified silane; mixing and stirring the silicone oil silane coupling liquid and other residual components, and then adding the acrylic acid type alkali swelling thickening agent to prepare the final low-concentration organic silicon emulsion defoaming agent. The defoaming agent has excellent defoaming performance and stability, and is suitable for foam treatment of an alkaline degreasing agent.

The invention discloses a high-speed gas-liquid mass transfer plate tower which comprises a tower body, a gas outlet pipe and a discharge pipe are arranged at the top and the bottom of the tower body respectively, a feeding pipe is arranged in the middle of the circumferential outer wall of the tower body, and a gas inlet pipe is arranged on the outer wall of one side close to the bottom of the tower body. A return pipe is arranged on the outer wall of one side close to the top of the tower body, mass transfer assemblies are arranged in the tower body, the mass transfer assemblies are distributed in the tower body at equal intervals, and each mass transfer assembly comprises a tower plate arranged in the tower body. According to the gas-liquid separation device, gas-liquid graded contact heat and mass transfer between materials can be achieved, the separation requirements of people for different materials are met, after a gas phase makes contact with a first arc-shaped plate to enable a dispersion sheet to rotate, the gas phase can rise along the outer wall of a second arc-shaped plate, and therefore the good guiding effect on the gas phase can be achieved; and a gas phase can be in full contact with a liquid phase sliding down along the inner wall of the adjusting cylinder for mass transfer.

The utility model relates to the technical field of ore processing, in particular to a garnet flotation defoaming device. The utility model provides a garnet flotation defoaming device capable of scraping a bottom. The garnet flotation defoaming device comprises a shell, a supporting frame, a stirring assembly, a bottom scraping assembly, a diluting assembly and the like. A supporting frame is installed on the top of the shell, a stirring assembly is installed on the top of the supporting frame, a bottom scraping assembly is installed on the front side of the shell, and a diluting assembly is installed on the left side of the shell. Foam sinking to the bottom is scraped to the upper portion through the motor, the screw rod and the scraping plate, defoaming is facilitated, the motor, the first bevel gear, the stirring rod and the like are arranged, the foam is stirred and extruded to be broken, the defoaming effect is achieved, the water pump and the water inlet pipe are arranged, water is conveyed into the shell through the water inlet pipe by means of the water pump, the foam is diluted through the water, and the defoaming effect is achieved. And through the arrangement of the drainage pipe, the effect of discharging waste water after defoaming is achieved.

The utility model relates to a vertical static hot -blast goods cabinet for defoaming of sealant, it includes the cabinet body, goods shelf, hot -blast module, goods shelf is constituted by circulating frame and a plurality of support frame. Hot -blast module can carry out blowing hot air to the cabinet body, to improve internal temperature, in high temperature environment, the mobility of sealant will obviously improve, the viscosity reduces, is favorable to increase the rate of bubble floating, improves the effect of defoaming, simultaneously circulating frame can drive support frame to and fro circulation, the slight vibration in the process also can promote defoaming process, improve the defoaming rate.

A lubricating oil composition is provided, comprising a hydrocarbon-based synthetic oil (X1), an ester-based synthetic oil (X2), and a phosphorus-containing copolymer (Y), wherein the phosphorus-containing copolymer (Y) comprises a constituent unit (a) derived from a specific alkyl methacrylate (A), a constituent unit (b) derived from a specific hydroxyl-containing methacrylate (B), and a constituent unit (c) derived from a specific phosphorus-containing methacrylate (C), which can maintain excellent defoaming properties over a long period of time.

The invention relates to a mirabegron taste-masking preparation as well as a preparation method and application thereof, mirabegron or pharmaceutically acceptable salt thereof is taken as an active pharmaceutical ingredient, and a functional auxiliary material glyceryl behenate is added into a prescription, so that various effects of masking taste, lubricating and aiding flow and defoaming are achieved; performance tests show that the mirabegron taste-masking preparation is sufficient in taste masking, better in lubricating performance, better in defoaming performance, more stable in chemical property, less in use variety of preparation auxiliary materials, more stable in product quality and easier to commercially produce and implement. In addition, the preparation method of the mirabegron taste-masking preparation is simple, convenient and economical, a simple three-in-one equipment one-pot compound preparation mode, a fluidized bed granulation mode and a physical mixing mode are adopted in production, and compared with a traditional method, the mirabegron taste-masking preparation is simpler, more convenient and easier to industrialize and has great economic and social benefits.