44 results about "ACETONE LIQUID" patented technology

The invention discloses a method for preparing a metal boride coating, which comprises the steps of: mixing solid inorganic salts, ball milling to micron level, adding metal boride nanoparticles to the ball-milled mixed salt, adding acetone liquid and ultrasonically dispersing it. , after vacuuming and heating in a vacuum drying box, a solid mixed salt containing metal boride nanoparticles is obtained; the solid inorganic salt is put into a crucible, heated to melting in a resistance furnace protected by an inert gas, and the solid mixed salt is added to melt In the inorganic salt, nano-inorganic molten salt is formed. After stabilization, the graphite anode and the cathode to be deposited are inserted into the crucible, and after electrophoretic deposition, the metal boride coating can be obtained; the invention utilizes the high temperature environment of the inorganic molten salt to realize the inorganic molten salt. Electrophoretic deposition and sintering of metal boride nanoparticles in salt are carried out simultaneously, that is, "sintering while electrophoretic deposition", so as to obtain a dense and strong metal boride coating.

The invention relates to a UV-initiated delay-curable one-component epoxy adhesive. The adhesive is prepared from the following raw materials in percentages by weight: 30-60% of epoxy resin, 5-30% of a homemade quaternary photobase generator, 10-30% of a toughening agent and 5-20% of a filling agent, wherein the homemade quaternary photobase generator is synthesized from the following components of alpha-bromoacetophenone, terephthalic acid (TPA) and sodium tetraphenylborate by the following processes: reacting alpha-bromoacetophenone and an acetone liquid of terephthalic acid (TPA) at room temperature to prepare bromo-quaternary ammonium salt, filtering, drying and recrystallizing the product to obtain a crystal substance, dissolving the crystal substance in distilled water and carrying out anion exchange reaction on the distilled water with the crystal substance and sodium tetraphenylborate at room temperature to obtain a product, washing the product with distilled water and drying to obtain anion quaternary ammonium salt paired with tetraphenylborate. Compared with the prior art, the curing speed can be delayed to 30 minutes-60 minutes, the process is simple, neither heat curing nor mixing is needed, the adhesive is environmentally friendly and is convenient to use and is also simultaneously suitable for multiple opaque materials and can be widely used in the field of structural bonding.

The invention utilizes a surface-enhanced raman spectroscopy to detect antibacterial drugs of furazolidone and furacilin. A method which adopts potassium chloroaurate to reduce sodium citrate is used for preparing aurosol; an acetone liquid which contains the furazolidone or the furacilin is mixed with the aerosol, the pH is regulated to 1.0-6.0, and a laser raman spectrometer with a laser light source of 785 nanometers is adopted to scan, so that a raman spectroscopy is obtained; 1611, 1560, 1488, 1472, 1397, 1343, 1260, 1173, 1022, 977, 806 and 775 centimeters <-1> are used as qualitative characteristic peaks for identifying the furazolidone, and 1602, 1554, 1456, 1336, 1162 and 966 centimeters <-l> are used as the qualitative characteristic peaks for identifying the furacilin; and moreover, the peaks of 1611centimeters <-1> and 1602 centimeters <-1> are respectively used for quantitatively determining the furazolidone and the furacilin. The method is convenient, quick, accurate and low in cost, and can be popularized and used in the fields food and drug testing.

The invention discloses a normal pressure analyzing adsorption type acetone recovery system and method of the shoemaking industry. The normal pressure analyzing adsorption type acetone recovery system comprises an acetone gas compression device, an adsorption device, a refrigerator and an acetone liquid storage tank. Acetone gases are compressed to be in the medium pressure state through the compression device and then enter the adsorption device to be adsorbed; after saturation adsorption, the acetone gases are reduced to the normal pressure to be desorbed; the analyzed concentrated acetone gases enter an evaporator of the refrigerator to be cooled and liquefied, and the liquefied acetone gases enter the acetone liquid storage tank to be recovered. The normal pressure analyzing adsorption type acetone recovery system and method solve the problem that the common vacuum pressure swing adsorption acetone recovery devices are low in desorption efficiency or the vacuum pump is high in failure rate which influences use, do not adopt the vacuum pressure swing adsorption system, use a screw type booster compressor to replace the complex vacuum pump, so desorption can be finished at normal pressure, the desorption efficiency is improved greatly, the system cost and failure rate are reduced greatly, and further the efficient, safe and reliable acetone recovery system is provided.

The invention relates to an automatic liquid adding system for a metal film stripping and cleaning device. The liquid adding system comprises an NMP soaking tank, an isopropanol supply pressure tank connected with a vacuum negative pressure liquid adding device, an acetone liquid supply pressure tank connected with a nitrogen positive pressure liquid supply device, and an NMP liquid supply pressure tank for supplying NMP liquids to the NMP soaking tank. A liquid adding inlet of the isopropanol liquid supply pressure tank is connected with a isopropanol liquid storage tank through a liquid adding pipe, a liquid adding inlet of the acetone liquid supply pressure tank is connected with a acetone liquid storage tank through a liquid adding pipe, and a liquid adding inlet of the NMP liquid supply pressure tank is connected with an NMP liquid storage tank through a liquid adding pipe. A liquid level detecting switch is disposed in each of the isopropanol supply pressure tank, the acetone liquid supply pressure tank, the NMP liquid supply pressure tank and the NMP soaking tank. By the automatic liquid adding system which is capable of unattended operation, operation efficiency of the system is increased evidently, automatic liquid adding is achieved, and equipment automation level is increased. In addition, the automatic liquid adding system is applicable to other full-automatic single-chip wet processing equipment.

The invention discloses a post-treatment process for preparing isophorone by acetone liquid-phase condensation method. The process includes: extracting a part of the liquid-phase stream of the tower bottom of the reactive distillation column and sending it to the isophorone demulsification recovery tower for disposal, and recovering the isophorone in the stream without additional additives, containing isophorone The top stream of the demulsification tower of phorone is then partially or fully returned to the reactive distillation tower; the isophorone-containing water phase is flashed or distilled to recover isophorone, and the water is returned to the reactive distillation tower for recycling. ; The liquid phase catalyst recovered by flash evaporation or distillation is concentrated and sent back to the reaction unit for recycling. By adopting the process of the invention, the energy consumption can be greatly reduced, the loss of isophorone and the catalyst in the wastewater can be significantly reduced, and the amount of the wastewater can be significantly reduced.

The invention provides a method for preparing silicon-aluminum-iron alloy containing containing nano-particles by using nano-molten salt, and belongs to the field of special ferroalloy production. Themethod comprises the steps that step one, mixed salt containing the nano-particles is prepared, that is, the nano-particles are mechanically mixed with the salt and then acetone liquid is added, vacuum-pumping and heating are carried out in a vacuum drying oven after ultrasonic vibration treatment, and the acetone is completely volatilized to obtain evenly mixed salt containing the nano-particles; and step two, the silicon-aluminum-iron alloy containing the nano-particles is smelted in an induction furnace, that is, scrap steel, seventy-fifth silicon iron, aluminum ingot, mixed salt containing the nano-particles and lime are sequentially added in an medium frequency induction furnace, the scrap steel, the seventy-fifth silicon iron, the aluminum ingot, the mixed salt containing the nano-particles and the lime are melted, keeping warm, stopping heating and standing are carried out, the silicon-aluminum-iron alloy containing the nano-particles is obtained by cast molding. According to the method, the nano-particles are added in the production process of silicon-aluminum-iron alloy to obtain the silicon-aluminum-iron alloy with even distribution of the nano-particles, and intermediate alloy is provided for preparing nano-particle containing steel at low cost.

The invention relates to a heterogeneous catalytic method for synthesis of isophorone from acetone. Acetone is used as a raw material, and a magnesium-aluminum composite oxide is used as a catalyst for carrying out catalytic synthesis to obtain isophorone; the magnesium-aluminum composite oxide comprises MgO, Al2O3 and MgAl2O4, the molar ratio of magnesium to aluminum is 0.3-3, the specific surface area is 80-150m<2> / g, and the pore volume is 0.2-0.3cm<3> / g; a fixed bed reactor is used for carrying out synthetic reaction, 20ml of 20 to 40-mesh catalyst is added into a stainless steel reactor of which the inner diameter is 10mm, the reactor is heated to the reaction temperature from the room temperature at the rate of 10 DED C / min after being qualified through an air-tight test, and then, the analytically pure acetone raw material is injected into the reactor by a duplex plunger pump through a preheater; the reaction temperature is 220-290 DEG C; the reaction pressure is normal pressure; and the air speed of the acetone liquid is 0.1-1.0 / h, the selectivity reaches 94.5%, the conversion rate reaches 44.8%, and the stability reaches 1000 hours.