53results about How to "Control the evaporation rate" patented technology

The invention discloses a natural volatile solid fresh-keeping agent for fruit and vegetables and a preparation method thereof. The fresh-keeping agent is prepared by mixing main raw material and adjuvants at a certain ratio in parts by weight, and taking rice flour and maltodextrin as a wall materials and essential oil mixed with natural spices as a core material; ingredients of the main raw material are rice flour, maltodextrin and essential oil mixed with natural spices, and the adjuvants comprise an antiseptic, an adhesive, a crisp-keeping agent, an emulsifier and an ethylene receptor inhibitor. The natural volatile solid fresh-keeping agent for fruit and vegetables has the main advantages of realizing freshness keeping of fruit and vegetables by volatilizing the essential oil mixed with natural spices and 1-MCP which respectively contact surfaces of fruit and vegetables; employing microcapsule technology to embed the essential oil mixed with natural spices and the 1-MCP to effectively control volatilization rate of the essential oil mixed with natural spices and the 1-MCP, improve utilization rate of effective ingredients and solve freshness-keeping technical problems of fruit and vegetables in the course of transport; and the product made from natural materials is safe and nontoxic. See the accompanying drawings of the abstract for processing technology of the fresh-keeping agent.

The invention discloses an electrostatic spinning device of a continuous nanometer fiber net. The device comprises a rubber plate, wherein a ring-shaped net belt is arranged under the rubber plate, needle holes are arranged on the surface, the device further comprises a spraying component, the spraying component comprises a metal probe whose surface is clamped with a metal clamp, a PTFE liquid guiding pipe and an injector which are connected in turn, the metal clamp is connected with an anode of a direct current high-voltage generator, the injector is clamped on a micro-injection pump, and the metal probe is inserted in the corresponding needle holes. The method of the invention for preparing the continuous nanometer fiber net comprises the following steps: injecting spinning solution into the injector, opening the micro-injection pump, enabling the spinning solution in the injector to flow out of the injector, forming a ball-shaped liquid drop on the top end of the metal probe, starting the direct current high-voltage generator, spraying jet flow from the ball-shaped liquid drop, and spraying to the ring-shaped net belt to obtain the continuous nanometer fiber net. The electrostatic spinning device of the invention solves the problems that the nanometer fiber nets obtained by existing devices have more single quality, and the diameter evenness of nanometer fiber is wore.

The invention relates to a method for preparing a lithium ion battery anode. The preparation method includes that aqueous anode slurry is coated on a positive current collector and then dried. The drying process includes three stages. The temperature of the first and third drying stages is lower than that of the second drying stage. The method for preparing the lithium ion battery anode reduces the phenomenon of curling during the drying process. The flexibility and the adhesion of the prepared anode plate are strengthened without material dropping or damage, thus the capacity and the circulation performance of the battery consisting of the anode prepared with the method are improved.

The invention belongs to the field of an air freshener and especially relates to a preparation method for a solid freshener. The method comprises the following steps: (1) preparing a stable chlorine dioxide solution; (2) preparing a colloid activating agent; (3) preparing microcapsule essence particles; (4) preparing the solid freshener. The solid freshener prepared according to the preparation method provided by the invention has an excellent air purifying effect; the essence powder is prepared from natural green plants and is green and safe; a microcapsule technique is cooperatively used for slowly releasing the fragrant active materials at a constant speed, so that the purpose of improving air quality can be achieved.

The invention discloses a silica cross-linking shape memory polymer material, characterized by using silica as a cross-linking point, forming a SiO2@polymer spherical polymer in which silica is used as the shell of the core polymer through surface grafting of a polymer, and connecting polyisocyanate with the terminal hydroxy of the polymer to obtain a polymer having a cross-over network structure, wherein the soft segment is a polymer whose surface is grafted by silica, and the hard segment comprises silica and a urethane chain segment. The silica cross-linking shape memory polymer material has the advantages of regular structure, high mechanical strength, stable shape memory performance, and high shape memory fixation rate and shape memory recovery rate, and can be applied for materials in medical science and other aspects.

The present invention discloses an external temperature field device for assisting the growth of two-dimensional black phosphorus crystals (hereinafter referred to as "external temperature field device"). The device includes a power supply, a switching power supply, a relay, a temperature control module, a thermocouple, and a heating wire. The device can control the heating of the heating wire andperform temperature programming and cooling by setting parameters of the temperature control module, and an external temperature field generated by the device can well assist the growth of the blackphosphorus crystals. The invention also discloses a using method and an application of the device. Compared with conventional tubular furnace heating modes without the "external warm field device", the method of the invention has the advantages of compensation of the temperature loss in the furnace, improvement of the distribution uniformity of the temperature field in the furnace, control of thetemperature field distribution and temperature change in a specific region, and facilitation of accurate control of the volatilization and transportation process of reaction raw materials, the nucleation and growth process of black the phosphorus crystals and the generation process of byproducts.

The invention discloses aluminum oxide-containing polyaniline zinc powder flake epoxy heavy anti-corrosion coating and a preparation method thereof. The coating comprises a component A and a component B, wherein the component A comprises the following components in parts by mass: 35-85 parts of epoxy resin, 0.5-25 parts of polyaniline zinc powder flake, 0.1-10 parts of aluminum oxide, 0.1-5 parts of pigment, 1-15 parts of packing, 0.01-2 parts of anti-sag agent, 0.01-0.5 part of dispersant, 0.01-2 parts of flatting agent, 0.01-0.5 part of deforming agent and 5-40 parts of mixed solvent; and the component B comprises the following components in parts by mass: 40-90 parts of amine curing agent and 10-60 parts of solvent; and the coating is prepared by mixing and stirring the component A and the component B for 1-5 minutes according to a mass ratio being 1: (0.1-1):1. The corrosion resistance, seawater erosion and abrasion resistance, ageing resistance and anti-penetrating property of the coating system are obviously improved; and the coating can be applied to heavy anti-corrosion engineering in fields of petrochemical equipment, pipelines, offshore oil platforms, berthing facilities, ships and the like.

A means of rapidly melting a large quantity of type II cryogen in a cryopump that is configured to contain the liquid in the warm cryopanel with the inlet to the cryopump facing up or sideways, and venting the liquid and gas in a controlled way. Rapid melting is preferably accomplished by flowing a purge gas that will condense on the cryodeposit. By not allowing the liquid to drain onto the vacuum housing the evaporation rate is limited and the maximum pressure in the cryopump can be controlled by the purge gas flow rate.

The invention discloses environment-friendly conductive silver paste and a preparation method thereof and a crystalline silicon solar cell prepared from the environment-friendly conductive silver paste. The environment-friendly conductive silver paste is prepared from compound silver powder, high-performance lead-free glass powder and an organic carrier, wherein the compound silver powder is micron silver powder containing ultrafine silver oxide with the mass fraction of 4-9%. Compared with the prior art, the ultrafine silver oxide is compounded with the micron silver powder, so that formationof a dense and flat silver film is facilitated; the environment-friendly conductive silver paste has relatively high tap density and relatively high sintering activity; the lead-free target of the conductive silver paste at the front side of the crystalline silicon solar cell is achieved by adopting the high-performance lead-free glass powder; the surface tension and the rheological property of the conductive silver paste are improved through adjusting the components and the content of the organic carrier; the environment-friendly conductive silver paste disclosed by the invention has good thixotropy and low contact resistance; the photoelectric conversion efficiency of the prepared crystalline silicon solar cell reaches 17.9-18.1%; new energy can be developed; and the crystalline siliconsolar cell conforms to the environmental protection concept and has a broad application prospect.

The invention discloses a photovoltaic power generation device capable of efficiently cleaning in a linkage way. The photovoltaic power generation device comprises an installation seat, wherein a plurality of solar cell pieces are arranged on the installation seat and comprises printed silver electrode grid lines, a main rotation shaft and at least one secondary rotation shaft are vertically arranged in the installation seat in a penetrating way, upper ends of the main rotation shaft and the secondary rotation shaft extend out of the installation seat and are respectively and horizontally connected with cleaning strip brushes, and lifting rotation adjustment assemblies are connected with lower ends of the main rotation shaft and the secondary rotation shaft. Compared with the prior art, the photovoltaic power generation device is compact in structure, lifting driving and rotation driving are efficiently combined, omnibearing cleaning on a surface of the solar cell panel and the storageof a cleaning tool can be stably and reliably achieved, the equipment complexity is reduced, cleaning brush heads on the cleaning strip brushes can rotate with the shafts to automatic finish the cleaning process, the cost is reduced, and the energy conversion efficiency is improved; and the solar cell piece is low in series resistance and high in photoelectric conversion efficiency, conforms to an environmental-protection concept and has a wide application prospect, and the new energy development demand is satisfied.

The invention discloses a preparation method of a nicotine salt atomizer with small irritation, and particularly relates to the technical field of atomizer preparation methods. A low-melting-point metal core film is arranged in the center of a ceramic atomization core, and a conductive part is implanted into the ceramic atomization core, so that the conductive part and the ceramic atomization core are combined more tightly and are not prone to falling off; meanwhile, due to the arrangement of an anti-blocking coating, the blocking problem can be solved, and the effective atomization rate can be remarkably improved; due to the arrangement of the conductive film layer and the far-infrared coating and the addition of the silver powder, the heat conduction capacity of the far-infrared coating is greatly improved, and the heating effect is good; and due to the fact that nicotine salt microcapsule particles are arranged in the far-infrared coating, the aroma is mellower, and the irritation of nicotine can be remarkably reduced; and meanwhile, the compound nicotine salt can enter blood more easily and be absorbed by the human body more easily, so that the effect of relieving the smoking addiction is achieved, the volatilization speed of the compound nicotine salt can be further controlled, and the lasting smoking cessation effect is achieved.

The invention provides a steel floating roof opening sealing device used for mounting a level instrument, which is characterized in that: the steel floating roof opening sealing device comprises a riser, a sealing assembly and a sealing rubber cover; the lower end of the riser is welded with an opening on the steel floating roof for sealing; the upper end of the riser is provided with a flange; the lower opening of the sealing assembly corresponds to the upper end port of the riser and is correspondingly provided with a flange; the flange at the lower opening of the sealing assembly is butted with the flange at the upper end of the riser; the upper part of the sealing assembly is provided with a tapered tube; a larger opening of the tapered tube is the upper opening of the sealing assembly; the sealing rubber cover is conical; the shape of the sealing rubber cover is matched with that of the tapered tube at the upper end of the sealing assembly; and the center of the sealing rubber cover is provided with a through hole. The sealing device is provided with the sealing assembly and the sealing rubber cover to reduce the contact area of oil and air to be equal to the pore size of the through hole, so the contact area of the oil and the air is greatly reduced.

The invention discloses a making device of metallographic film-coated AC paper. The making device comprises a flat bottom groove and an upper cover; the groove bottom of the flat bottom groove is planar; the upper cover is connected with the flat bottom groove in a sealed mode, and forms a sealed first containing space and a second containing space together with the flat bottom groove, wherein thesecond containing space communicates with the first containing space; and the second containing space is provided with a chemical feed pipe capable of being closed. By adopting structures of the upper cover and the flat bottom groove, the two parts can play a certain sealing role, the upper cover serves as the bottom, suitable materials are added according to the size of the second containing space, the chemical feed pipe is closed, and the whole device is shaken periodically till the materials are sufficiently dissolved; a prepared solution is subjected to still standing, the device is reversed to make the flat bottom groove serve as the bottom, the solution enters the first containing space from the second containing space, the device is shaken from side to side to enable the solution to be spread, and then still standing is conducted till the thickness of the solution is uniform; and through opening of the chemical feed pipe, the volatilization speed of acetone is controlled, requirements for an operation technique are avoided, process stability is ensured, and thus the quality of the obtained AC paper is ensured.

The invention relates to an IR baking type light guiding and brightening optical emulsion and a preparation method thereof. The emulsion comprises the following components in parts by weight: 140-260 parts of acrylic resin, 400-760 parts of a solvent A, 10-30 parts of isophorone, 10-30 parts of an auxiliary agent and 10-25 parts of polyvinylidene fluoride. The preparation method comprises the following steps: firstly adding acrylic resin into a mixing container, and then adding a solvent A into the acrylic resin to disperse the acrylic resin into a liquid state; then adding an auxiliary agent, and uniformly stirring; adding the isophorone, and uniformly stirring; and finally, adding polyvinylidene fluoride for dispersion treatment, performing uniform stirring, and preparing the light-guiding and brightening optical emulsion. According to the invention, the hardness problem existing in the using process of existing light guide plate ink can be solved, and the IR baking type light guiding and brightening optical emulsion is suitable for being used in cooperation with other light guide plate ink, can improve the hardness of the light guide plate ink, has an anti-scratching effect, is beneficial to improving the display effect of a liquid crystal screen and prolonging the service life, is safe and non-toxic, and effectively avoids pollution to the environment.

The invention discloses a monocrystal culture device, which comprises a storage unit and a culture unit, wherein the culture unit comprises a first bottle, a second bottle, and a second cover. A partof the wall of the periphery of a first region of the second bottle is provided with through holes with a required number. The second cover comprises an enclosed part and an extension part, which is formed on the enclosed part and extends along the vertical direction. After the second cover is mounted on the second opening of the second bottle, the extension part has a first state that part of through holes is opened, and a second state that part of through holes is covered. The second bottle and the second cover are used together so as to adjust the number of the through holes that are covered by the extension part, and the opening rate of through holes in the second bottle is adjusted. When a volatile second solvent is stored in the second bottle, the diffusion rate of the second solventis adjusted by adjusting the opening rate of through holes so as to improve the monocrystal quality. The invention discloses a monocrystal culture method, which utilizes the provided device and obtains high quality monocrystals.

The invention relates to a special adhesive for a hemisphere of a table tennis. The special adhesive comprises the following components in parts by weight: 3-5 parts of alpha-cyanoacrylate, 2-5 parts of vinyl imidazole, 40-50 parts of ethyl alcohol, 25-40 parts of diluent, and 0.1-0.5 part of divinyl benzene. The liquid materials of the alpha-cyanoacrylate, the vinyl imidazole and the divinyl benzene are used, the viscosity of the adhesive is reduced, and the materials are better mixed evenly, so that the dissolution and the adhesion of PVC (polyvinyl chloride) and the evaporation speed of a solvent are controlled, and the final bonding strength is high and is favorable for prolonging the service life of the table tennis.