15results about How to "Good volatilization effect" patented technology

The invention discloses a continuous synthesis method of 3, 5-di-tert-butyl-4-hydroxybenzyl methyl ether, and belongs to the technical field of organic synthesis. The method comprises the following steps: reacting 2, 6-di-tert-butylphenol, paraformaldehyde and methanol under the action of a dimethylamine methanol and piperazine mixed catalyst, recovering methanol through rectification, crystallizing, carrying out suction filtration, and drying to obtain 3, 5-di-tert-butyl-4-hydroxybenzyl methyl ether; secondly, the recovered devitrification filtrate can be directly and circularly used for recovering the 3, 5-di-tert-butyl-4-hydroxybenzyl methyl ether and the methanol. According to the method, dimethylamine methanol and piperazine are compounded to serve as a catalyst for concerted catalysis, generation of by-products is effectively reduced, the product yield can reach 95.75%, and the purity can reach 96.6%. According to the synthesis method, the crystallization filtrate is recycled, the product and the solvent can be fully recovered, the loss is reduced, and the cost is saved; continuous production is adopted, a purification section is avoided, operation steps and energy consumption are reduced, and the production requirements of green chemical industry are met.

The embodiment of the invention relates to the technical field of monocrystalline silicon preparation, and provides a crystal pulling control method which at least can improve the axial resistivity uniformity of a monocrystalline silicon rod. The control method comprises the following steps: acquiring a prediction curve, wherein the prediction curve is expressed as a change curve of resistivity corresponding to different equal-diameter lengths of a silicon single crystal rod comprising a first dopant; obtaining a preset isodiametric slope table based on the prediction curve, the preset isodiametric slope table and corresponding preset process parameters, wherein the preset process parameters comprise a power ratio of the set power of the upper heater to the set power of the lower heater; the preparation method comprises the following steps: preparing a target monocrystalline silicon rod, adding a silicon material and a first dopant into a crucible, sequentially carrying out a melting process, a seeding process, a shouldering process and an equal-diameter process to obtain an initial monocrystalline silicon rod, adjusting process parameters of the equal-diameter process according to preset process parameters, and after the equal-diameter length of the initial monocrystalline silicon rod reaches a target length, carrying out continuous casting on the target monocrystalline silicon rod to obtain the target monocrystalline silicon rod. And entering an ending process to obtain the target single crystal silicon rod.

The utility model relates to a multi-stage spiral solvent removal device, which belongs to the technical field of solvent separation and comprises a first-stage spiral solvent removal mechanism, a second-stage spiral solvent removal mechanism and a third-stage spiral solvent removal mechanism which are sequentially connected from top to bottom. Through the arrangement of the first-stage spiral solvent removing mechanism, the second-stage spiral solvent removing mechanism and the third-stage spiral solvent removing mechanism which are sequentially connected from top to bottom, the first-stage spiral solvent removing mechanism is used for primarily heating materials, and the primarily heated materials enter the second-stage spiral solvent removing mechanism; in the process, the whole material is uniformly heated, the volatilization effect of the organic solvent is good, meanwhile, the spiral feeder is adopted for feeding, uninterrupted continuous feeding can be achieved, the quantity of products heated each time is large, the efficiency of removing the organic solvent is greatly improved, and the production requirement can be met.

The invention discloses a precursor alpha-aldimine Fe (II) compound for a magnetic random storage material, and belongs to the technical field of functional materials and microelectronic materials. The structural formula of the alpha-aldimine Fe (II) compound disclosed by the invention is as shown in a formula I; the Fe-based thin film has good volatility and thermal stability and good film forming performance, can be used as a precursor of chemical vapor deposition (CVD) / atomic layer deposition (ALD), and is continuous, uniform and high in purity through a CVD / ALD process. # imgabs0 #

The application relates to an amino acid type gas phase corrosion inhibitor and a preparation method and application thereof, the gas phase corrosion inhibitor comprising amino acids and montmorillonite, and the gas phase corrosion inhibitor comprises the following mass percentage contents: 60-70% of amino acids and 30-40% of modified montmorillonite, the amino acids are alanine, and the modified montmorillonite is organic montmorillonite or carbon dot montmorillonite; the method specifically comprises the following steps: configuring alanine into an alanine aqueous solution, mixing the alanine aqueous solution with organic montmorillonite or carbon dot montmorillonite, heating and stirring, suction filtration and drying, so as to obtain the gas phase corrosion inhibitor. Compared with the prior art, the amino acid type gas phase corrosion inhibitor is compounded with montmorillonite by utilizing the characteristics of the montmorillonite, such as rich pores, large specific surface area and fine granularity, so that the volatilization capacity and corrosion inhibition performance of the amino acid type gas phase corrosion inhibitor are improved.

The invention provides a photolithography coated high-nickel ternary positive electrode material and a preparation method thereof, and belongs to the technical field of lithium ion battery positive electrode materials, and the preparation method comprises the following steps: carrying out wet spraying coating on LiNixCoyMn1-x-y-wZrwO2 matrix powder by using a conductive photoresist as a modifier to obtain a coated product, and under the protection condition of an oxygen atmosphere, carrying out wet spraying coating on LiNixCoyMn1-x-y-wZrwO2 matrix powder to obtain the high-nickel ternary positive electrode material. And sequentially carrying out exposure reaction, washing and developing treatment, drying, sieving and iron removal on the coated product by utilizing illumination or thermal radiation to obtain the conductive polymer coated high-nickel ternary positive electrode material. According to the invention, the advantages of good conductivity and stable structure of the conductive polymer are fully utilized, so that the problem of migration resistance of Li < + > on a material interface is reduced in the high-current charging and discharging process of the battery, and dissolution of metal particles on the surface of the material and surface side reaction are inhibited; the obtained high-nickel ternary positive electrode material crystal coated with the conductive polymer is high in first discharge efficiency, good in rate capability and cycle performance, and simple in process operation.

This invention belongs to the field of agricultural planting technology, specifically relating to an attractant for millet leafhoppers and its application method. The attractant, by weight, comprises the following components: 5-10 parts millet leaf extract, 30-40 parts n-hexane, 1-2 parts dispersant, and 1-2 parts starch dextrin. The millet leaf extract includes 2-ethylhexanol, nonanal, 1-octen-3-ol, myrcene, tridecane, tetradecane, and eucalyptol. This invention, by using millet leaf extract as the main component and other alcohols, aldehydes, and alkenes as auxiliary additives, allows the substances in the leaves that attract millet leafhoppers to volatilize and diffuse, thus making the attractant's attraction to millet leafhoppers much greater than that of millet seedlings, thereby preventing millet leafhoppers from harming millet seedlings.

The invention belongs to the technical field of lithium ion batteries, and relates to a cyano electrolyte additive, an electrolyte and a lithium ion battery. The cyano electrolyte additive comprises a nitrile additive and a functional additive; the structural formula of the functional additive is shown in the specification. The nitrile additive and the functional additive are compounded, the functional additive has a cyano group and a triazine ring, the triazine ring is chelated with transition metal ions and cooperates with the cyano group to form a film, and a benzene ring rigid structure can enhance the thermal stability. The nitrile additive and the functional additive have a cyano complementation effect, three phenyl groups in the functional additive are connected with a triazine ring, so that the functional additive has a larger structure and steric hindrance and cannot be completely complexed with transition metal ions on the surface of the positive electrode, and the short-chain nitrile additive has a smaller structure and can make up the space of the functional additive; and the two synergistically form a complementary effect to form a compact interfacial film on the surface of the positive electrode so as to improve the high-temperature performance.

The invention discloses a screening method of a perovskite precursor solution additive, a perovskite precursor solution and a battery, and relates to the field of batteries. The screening method comprises the following steps: analyzing a solvent and a solute of a base solution of a perovskite precursor solution, and screening an additive which does not dissolve any component in the solute, is mutually miscible with the solvent, has surface tension lower than that of the base solution of the perovskite precursor solution and has a difference of 20 DEG C or more from the base solution of the perovskite precursor solution at normal pressure from various alternative additives as a target additive. The screened target additive does not damage the original solute-solvent system, and can improve the wetting efficiency and adjust the volatile performance of the perovskite precursor solution on the premise of not influencing the crystallization performance of the hybrid perovskite solar cell precursor solution, thereby improving the comprehensive performance of the precursor solution.

This utility model belongs to the technical field of rubber composite board, specifically relating to a surface treatment device for the adhesive layer of rubber composite boards. The device includes a cleaning unit, a drying unit, and a corona treatment unit through which the vulcanized rubber-metal composite board passes sequentially. The cleaning unit includes a first sprayer using ethyl acetate solution as the cleaning medium and a second sprayer using ethanol or methanol as the cleaning medium. The drying unit includes a first purging duct and a second purging duct, located after the first and second sprayers, respectively. The corona treatment unit is a corona treatment machine. This surface treatment device cleans the adhesive layer surface after vulcanization and before coding, making it particularly suitable for continuous production lines of rubber composite boards. It features thorough adhesive layer cleaning and strong adhesion of the coding paint.

The utility model relates to a treating agent feeding device for water environment treatment, relates to the technical field of water treatment, and is used for solving the problems that a uniform feeding device in the prior art wastes time and labor and is low in efficiency, or treating agents are inconvenient to convey. Comprising a controller, a stirring mechanism and a throwing mechanism, the throwing mechanism comprises a first water suction pump, a rotating assembly, a mounting table, a telescopic assembly and a spraying groove, the water inlet end of the first water suction pump is fixedly communicated with the stirring mechanism, the water outlet end of the first water suction pump is fixedly communicated with the spraying groove, and the mounting table is fixedly connected with the rotating assembly; one end of the telescopic assembly is fixedly connected to the mounting table, the other end of the telescopic assembly is fixedly connected with the spraying groove, and the first water suction pump, the stirring mechanism, the rotating assembly and the telescopic assembly are all electrically connected with the controller.

The invention relates to the field of plastic additive preparation, in particular to a plastic compound additive and a preparation method thereof. The invention provides a plastic compounding auxiliary agent. The plastic compounding auxiliary agent is prepared from the following components: isosorbide diheptyl ester, poly (hexanediol succinate), a Revonox 420 antioxidant, salicylate, zinc oxide, pentaerythritol bismaleate and a flame retardant, the preparation method of the plastic compound auxiliary agent comprises the steps of S1 mixture preparation and S2 plastic compound auxiliary agent preparation, parameters such as temperature are controlled in the preparation process, the mixing degree and compatibility of the raw materials are effectively improved, the finally prepared plastic compound auxiliary agent has stable properties, and the flexibility, extensibility and plasticity of plastic are improved.

The invention discloses a traditional Chinese medicine thermal therapy nursing device, and relates to the technical field of traditional Chinese medicine thermal therapy nursing, the traditional Chinese medicine thermal therapy nursing device comprises a base, four fixing rods are fixedly arranged at the top of the base, an inner box is fixedly arranged at the ends of the four fixing rods, a drainage cleaning mechanism is arranged at the inner bottom of the base, and a distance fixing mechanism is arranged on the inner side wall of the inner box. Two mixing mechanisms are respectively arranged on the outer side wall of the inner box; through the arrangement of a positioning cylinder, an L-shaped rod, an L-shaped wedge-shaped rod, a long rod, a plurality of clamping blocks, a first wedge-shaped block, a movable rod, a plurality of inserting grooves, a floating plate, a plurality of extrusion springs, a plurality of spring columns, two extrusion plates, a plurality of second wedge-shaped blocks, a third wedge-shaped rod and three positioning sliding blocks, quick and accurate distance fixing can be achieved regardless of the amount of liquid medicine in the inner box; the affected limb of a patient is always kept to be fixed on the surface of the liquid medicine by about 10cm, and the optimal thermal therapy effect on the affected limb is ensured.

The degassing device comprises a tank body and a product liquid pipe, the top of the tank body is connected with an exhaust pipe orifice, the bottom of the tank body is connected with a liquid outlet pipe orifice, the product liquid pipe is rotatably arranged in the tank body, a plurality of spray nozzles are connected and arranged on the product liquid pipe, a swing power mechanism is arranged on the outer side of the tank body, one end of the product liquid pipe is connected with a liquid inlet joint, and the other end of the product liquid pipe is connected with a liquid outlet joint. According to the utility model, a product solution is refined by adopting a mode of swinging spraying and scattered flow impact, volatile 1, 4 dioxane components in the solution are taken away through vacuum suction, the degassing operation requirement of the product solution is met, the degassing device has the advantage of good degassing effect, and the 1, 4 dioxane components in the product solution are uniformly dispersed in the product solution, so that the 1, 4 dioxane components in the product solution are uniformly dispersed in the product solution. The content of 1, 4-dioxane is obviously reduced, and the requirements of enterprises on product quality improvement can be met.

The invention provides a method for temporarily reinforcing wooden cultural relics through menthol and derivatives thereof, and belongs to the field of cultural relic protection and wood processing. According to the method, healthy pine wood serves as a raw material, aged and degraded wood with moderate and severe degradation degrees is artificially prepared through a hydrothermal method, the wood with different degradation degrees is reinforced by adopting menthol and menthyl lactate serving as a derivative of menthol as a reinforcing agent, and the state of the wood before and after reinforcement is evaluated; and different protection modes of the aged wood with different degradation degrees are provided, so that the wood with different degradation degrees can be protected in time. The method has good simulated aging and degradation conditions, and the reinforcing mode is simple, effective, safe and environmentally friendly.