38results about How to "Improve chemical efficiency" patented technology

The invention discloses a polyimide fiber and a preparation method thereof. Synthesizing polyamide acid with a ternary polymerization method destroys the regularity and the symmetry property of molecular chains, so that the crystallization tendency of the molecular chains is reduced and the spinning property of PAA solution is improved; and partial cyclization treatment limits the degradation of polyamide acid, and spinning serum is easy to solidify and form when entering into coagulation bath. The microwave method is adopted to treat polyamide acid fiber, the cyclization rate is accelerated, and the reaction time is shortened; and simultaneously, no any side reaction is aroused under the microwave radiation. The prepared polyimide nascent fiber has high strength and good thermal resistance.

The embodiment of the invention discloses a finite element grid automatic division method and device and a storage medium. The method comprises the following steps: acquiring three-dimensional geometrical characteristics of a target part from CAE software; according to the characteristics of the three-dimensional geometric features, determining features needing to be cleaned and cleaning the features; performing grid generation on the cleaned three-dimensional geometric features by using CAE software to obtain three-dimensional grid features; according to the classification of the three-dimensional geometric features, adjusting the three-dimensional grid features corresponding to each classification; and according to the grid quality requirement, correcting the adjusted three-dimensional grid characteristics. According to the embodiment of the invention, an automatic finite element grid division process is realized, and the grid division efficiency is improved.

The invention provides a livestock and poultry waste harmless completely-intelligent processor, which comprises a waste decomposition apparatus, wherein the waste decomposition apparatus is connected to a waste lifting and conveying apparatus, a rendering case apparatus is provided at right below the waste decomposition apparatus, a grease refining and separating apparatus is arranged at the lower part of the rendering case apparatus, and a hot-blast stove apparatus and a medium oil heating device are connected to the side surface of the rendering case apparatus. The used decomposition apparatus is a design with original creation, and is capable of rapidly decomposing a raw material, wherein the decomposition efficiency is several times than that in this industry, and the original creation is capable of finely decomposing the raw material and greatly increasing the rendering efficiency. A medium oil heating device, a hot-blast stove apparatus are used, medium oil is introduced for heating, and then rendered by hot air, rendering efficiency is increased, the exhaust gas is simultaneously introduced in a combustion chamber of the hot-blast stove for pyrolysis processing, and thereby the exhaust gas can reach a discharge standard.

The invention discloses a microencapsulated flame retardant and a preparation method thereof. The invention aims at the defects of poor compatibility and poor water resistance of a flame retardant and a high polymer material, the method adopts an interfacial polymerization method, the flame retardant, an amine compound and an emulsifier are dissolved in deionized water to form a water phase, then an organic solvent is added into the water phase and dispersed at a high speed to form a water-in-oil emulsion; after the emulsion is stable, a curing agent isocyanate is added; and polymerization reaction is carried out on the isocyanate and the amine compound aggregated on the surface of the flame retardant to form the polyurea microencapsulated flame retardant. Compared with a flame retardant which is not subjected to microencapsulation treatment, the flame retardant subjected to microencapsulation modification of the polyurea has the advantages that the water resistance and the compatibility with macromolecules are effectively improved, the flame retardant property of the material is greatly improved, and the damage of the flame retardant to the mechanical property of the material is reduced.

The invention relates to the technical field of waste disposal equipment and discloses garden leaf waste materialization equipment, which comprises a cabinet, a feed nozzle, a discharge inclined platform and a crushing mechanism. The feed nozzle is fixedly installed on the top of the cabinet. The discharge inclined platform fixedly installed at the bottom of the inner wall of the cabinet. The crushing mechanism is arranged inside the cabinet. The inside of the feed nozzle is provided with a filter turning component. The inside of the cabinet is provided with a scraping mechanism adapted to thedischarging inclined platform. The bottom of one side of the cabinet is fixedly installed with an anti-blocking discharging device. Through setting the automatic scraping mechanism in the materialization equipment, the garden leaf waste materialization equipment can realize auxiliary discharge, thus greatly improving the automation degree of discharging, speeding up the discharging speed, and making the discharge cleaner. The staff need not spend a lot of time on manual auxiliary discharging. Even if the leaf waste is relatively viscous, the leaf waste can be discharged quickly and cleanly, thus greatly improving the materialization efficiency of the leaf waste.

The invention discloses a harmless treatment technological process for dead poultry and livestock. The harmless treatment technological process comprises steps as follows: 1), automatic loading and breaking; 2), heating treatment; 3), dry melting; 4), waste gas treatment; 5), solid-liquid separation after melting. According to the technological process, hot oil circularly flows on the periphery of a melting barrel, so that the heating requirement is met, and the condition required by the dry melting is met; waste gas produced in the melting process is concentrated and discharged to a water vapor inlet of a water vapor chamber through a pipeline and is pyrolyzed by heat produced in an oil path, thereby meeting the emission requirement; the heat energy demand of a melting machine and the water vapor chamber is met by a combustion furnace in a single heating process, the energy is saved, the occupied space is reduced, and energy conservation and environmental protection are realized; after hot air entering the combustion furnace from an inlet is discharged from an outlet after circulation, part of the hot air is discharged into a high-temperature melting barrel through a pipeline, the melting efficiency is improved, the other part is discharged into a drying barrel, the heat energy recycling effect is realized, more energy is saved, and resources are sufficiently recycled.

The invention discloses an argon gas protection rotary blowing refining method for low-pressure casting of aluminum alloy melt. The method comprises the following steps that an aluminum alloy materialis melted; a refining device is adopted for carrying out argon gas blowing refining on molten aluminum after melting is finished, and molten aluminum alloy metal is left to stand after refining is finished; and a mold shell model waits to be poured; and a casting is poured by adopting a low-pressure casting device connected with an air compressor through a low-pressure casting process. The problem that the content of the aluminum alloy melt casted by low-pressure casting is large is solved, the density and pressure bearing capacity of the aluminum alloy are improved, the situation that the metallurgical quality is unstable and even scrapping occurs due to the fact that the aluminum alloy melt is large in gas content is avoided, so that the production cost of castings is greatly reduced; and the hydrogen content of every 100 g of a sample after refining is less than 0.1 mL, and the production efficiency is improved while the gas content of the aluminum alloy melt is reduced.

The invention discloses a preparation method of a polyurethane capsule. The preparation method comprises the following steps: 1) uniformly stirring 100 parts of oil-soluble matters, 100-200 parts of polyurethane acrylate oligomer, 100-500 parts of an organic co-solvent and 0.5-40 parts of a photoinitiator to obtain an oil phase solution; 2) adding the oil phase solution into 200-300 parts of an aqueous solution of an emulsifier with the concentration of 0.1-50wt%, and shearing and emulsifying to obtain an oil-in-water emulsion; and 3) carrying out a reaction on the oil-in-water emulsion under the condition of stirring and ultraviolet irradiation to obtain a suspension rich in polyurethane capsule. The method is used to prepare the polyurethane capsule by means of quick initiation by ultraviolet light, so that the preparation time of the polyurethane capsule is greatly shortened. Meanwhile, the content of capsule in the capsule suspension prepared by the preparation method is high, and the method is suitable for industrialized production.

The invention relates to an automatic material dissolving machine. The automatic material dissolving machine comprises a machine frame, a lifting mechanism, a motor, a material dissolving cylinder anda servo motor; the lifting mechanism can be placed in the machine frame in a vertically movable manner; the two ends of the lifting mechanism are respectively arranged on side rods on the two sides of the machine frame in a sleeving manner; the motor is fixedly placed on the lifting mechanism; a stirring paddle is arranged on an output shaft of the motor in a sleeving manner; the material dissolving cylinder is detachably placed at the bottom of the machine frame; the stirring paddle is positioned in the material dissolving cylinder; the servo motor is placed at the upper end of the machine frame; a gear is mounted on an output shaft of the servo motor in a sleeving manner; a gear rack is arranged at the upper end of the lifting mechanism; the gear on the output shaft of the servo motor is engaged with the gear rack; the servo motor drives the lifting mechanism to move vertically along the machine frame through the gear and the gear rack. Compared with the prior art, the automatic material dissolving machine is high in automation degree and uniform in stirring; the material dissolving efficiency is improved.

An apparatus for chemically toughening glass which can toughen the surface of the glass by inducing compressive stress on the glass surface through ion exchange and a method of chemically toughening glass using the same. The apparatus includes a chemical toughening bath which chemically toughens the glass; a transportation part which transports the glass from upstream of the chemical toughening bath through the chemical toughening bath to downstream of the chemical toughening bath; and a microwave generator disposed above the chemical toughening bath, the microwave generator radiating microwaves to the glass.

A method of increasing chemical efficiency of chemical additives in a papermaking system includes the steps of providing thick stock pulp comprising soluble lignin, process water, and at least about 2% by weight of cellulosic fiber based on total weight of thick stock pulp, and adding at least one laccase enzyme and at least one organic polymer to the thick stock pulp to reduce the amount of soluble lignin therein. The organic polymer is chosen from cationic polymers, non-ionic polymers and combinations thereof.

The invention provides a method for preparing capsules with oil-soluble etherified amino resin in situ as wall-forming monomers. The method includes the following steps that firstly, alkanol etherified amino resin with different carbon chain lengths and oil-soluble matter are mixed and fully stirred and dissolved to obtain a homogeneous oil phase; secondly, the prepared homogeneous oil phase is added into an aqueous solution containing emulsifier for sufficient stirring, shearing and emulsifying, and emulsion drops with the grain size ranging from 10 nm to 5 mm are obtained; thirdly, the emulsion drops are heated according to programs, the pH value is adjusted so that the etherified amino resin can have a polymerization and solidification reaction on the surfaces of the emulsion drops to form capsule walls covering the oil phase, and the capsules with nuclear shell structure are obtained after filtering and washing. The synthesis technology is simple, energy consumption is low, requirements of equipment are low, reaction conditions are easy to control, and the prospect of large-scale production is achieved. The easy capsulation method has very huge application prospects in the fields of pesticide, cosmetics and intelligent heat-storage temperature-adjusting textile.

The invention relates to the technical field of automatic equipment, and particularly relates to an automatic material dissolving machine. The automatic material dissolving machine comprises a rack, alifting mechanism, an electric motor, a material dissolving cylinder and a servo motor; the lifting mechanism is arranged in the rack in a vertical movable mode; the two ends of the lifting mechanismrespectively sleeve the side bars on the two sides of the rack; the electric motor is fixedly arranged on the lifting mechanism; the output shaft of the electric motor is vertically downwards; the output shaft of the electric motor is sleeved with a stirring paddle; the material dissolving cylinder is detachably arranged at the bottom of the rack; and the stirring paddle is positioned in the material dissolving cylinder. The automatic material dissolving machine is reasonable in design; and the servo motor drives the lifting mechanism to go up and down, so that control is more convenient, vertical movement is more accurate, and material dissolving efficiency is improved.

The invention belongs to the field of medicine synthesis, and particularly relates to a synthesis method of cefathiamidine. The preparation method comprises the following steps: enabling N,N-diisopropylthiourea to react with ethyl chloroacetate, performing an acylation reaction by using thionyl chloride, and further performing a reaction with silanized 7-ACA to generate cefathiamidine. According to the synthetic method of cefathiamidine provided by the invention, two silanization reagents are used, and the second silanization reagent plays a role in catalysis of silanization, so silanization efficiency is improved; and N,N-diisopropylthiourea and ethyl chloroacetate generate acyl chloride which then react with 7-ACA to synthesize thiamidine, s chloroacetyl 7-ACA impurities generated by reaction of acyl chloride and 7-ACA are avoided.