51results about How to "Process conditions are easy to achieve" patented technology

The present invention belongs to the field of ceramic material preparing technology, and is especially colloidal state forming process for preparing light high strength ceramic material. The process includes the following steps: preparing suspension with very low solid phase content with special organic monomer, solvent, initiator or chelating agent, and ceramic powder; in-situ solidification through gel polymerization of monomer or high molecular cross-linking to obtain ceramic biscuit; drying, removing binder and no-pressure high temperature sintering to obtain light high strength ceramic material. The present invention can control the porosity and pore size of the ultimate product through altering the solid phase content in the suspension, the sintering condition and the powder size. The present invention has simple technological process, low cost, environment friendship and other advantages, and the produced ceramic material has wide application range.

The invention discloses a continuous fiber-reinforced thermoplastic resin melt impregnation device and a preparation method. The melt impregnation device comprises a filament spreading frame, a preheating device, a melt impregnation mold, a cooling device, a traction device and an extruder. The melt impregnation mold comprises at least one slit roller which is provided with a slit, and the slit rollers can rotate in an adjusting mode. The melt impregnation device further comprises a plurality of dispersing rollers, and the dispersing rollers and the slit rollers are arranged in a staggered mode at equal intervals. According to the continuous fiber-reinforced thermoplastic resin melt impregnation device and the preparation method provided by the invention, the wrapping angle of a fiber bundle in the melt impregnation mold can be adjusted online, the spreading width of the fiber bundle is increased, the fiber bundle impregnation degree is improved, the continuous fiber-reinforced thermoplastic resin compounding effect is improved, and continuous fiber-reinforced thermoplastic composite prepreg or prepreg tapes are prepared continuously.

The invention belongs to the field of building material, and relates to a method for preparing a high stone powder mixing quantity porous baked brick which comprises the raw materials by weight percent: 80-95% of stone powder, 3-5% of sintering auxiliary agent and 0-17% of additive. The raw materials are simultaneously added pore for forming a medium with the weight accounting for 3-10% of the total weight of the powder, and the solvent is water solution containing 1-5% of binding agent. The preparation method comprises the steps such as weighing the raw materials, mixing, molding, drying, sintering, cooling and the like. As the organic binding agent and the sintering auxiliary are added, the bonding force among stone powder particles can be enhanced, and the formability and the sinteringperformance of adobe can be improved. By adding the pore for forming the medium, the density of the baked brick can be reduced. The invention has simple technique, low cost, high stone powder demand,energy conservation, environmental protection as well as high strength and low density of the baked brick. The invention can increase the stone powder mixing quantity in the baked brick and simultaneously reduce the density of the baked brick, thus being beneficial to expanding the application field of the baked brick and improving the using performance thereof.

The invention relates to the technical field of chemical synthesis, in particular to a preparation method of 1,3-cyclohexanedione. The preparation method of the 1,3-cyclohexanedione comprises the following steps: with 1,3-acetonedicarboxylic ester and acrylate as raw materials, carrying out condensation and cyclization under the action of a base catalyst to prepare an intermediate; carrying out hydrolysis decarboxylation on the intermediate to obtain a crude product; and recrystallizing the crude product to obtain the 1,3-cyclohexanedione. The preparation method of the 1,3-cyclohexanedione hasthe advantages that process conditions are convenient to realize, post-treatment operation process is simple, yield is as high as 90.9%, reaction selectivity is high, production efficiency is high, operation safety is high, pollution is small, and the preparation method is suitable for industrial scale production.

This invention relates to one method to process fabric fiber by fiber plant stem or plant peel part, which comprises the steps of analyzing, thread out, bleaching, softening and extending, wherein, the bleaching adopts several sections of bleaching as optimization and then for thread process. This invention also relates to one method to extract fabric fiber from Abelmoschus esculentus stem.

The invention discloses a wound cleaning disinfectant. The wound cleaning disinfectant is prepared from, by mass, 2-4 parts of benzalkonium chloride, 6-8 parts of radix bupleuri, 2-4 parts of hydrogen peroxide, 7-9 parts of herba cirsii japonici, 2-4 parts of triethanolamine, 4-6 parts of fructus gardeniae, 2-4 parts of hyaluronic acid powder, 4-8 parts of flos sophorae, 7-9 parts of flos chrysanthemi indici and 200-400 parts of water for injection. According to the wound cleaning disinfectant, the production cost is low, the preparation technology is simple, technological conditions are easy to realize, and the product stability is high.

The invention discloses a disinfectant fluid for cleaning an oxygen mask for cardiovascular internal medicine; the disinfectant fluid comprises the following components by weight: 1-3 parts of peroxyacetic acid, 1-5 parts of hydrogen peroxide, 3-6 parts of metronidazole, 4-9 parts of phenol, 6-10 parts of bohadschia graeffei, 2-6 parts of sodium hypochlorite, and 1-5 parts of a herba centellae extract. The developed disinfectant fluid for ward internal disinfection is colorless and transparent in appearance and stable in physical and chemical indicator performance, generates no crystallization, turbidity and precipitates during use, and has physical and chemical indicators showed stably. Compared with the prior art, the prepared disinfectant has the advantages of low production cost, simple preparation process, easy realization of process conditions, and good product stability; and a volatile oil extracted from traditional Chinese medicines is added, the smell is aromatic, and patients feel blissfully happy.

The invention provides a synthesis method of a Pexidartinib intermediate, which specifically comprises the steps of synthesizing a compound I by taking a 6-aminonicotinate compound and 6-trifluoromethyl nicotinaldehyde as raw materials, and generating [6-({[6-(trifluoromethyl) pyridine-3-yl] methyl} amino) pyridine-3-yl] methanol by taking the compound I as a raw material and performing reduction reaction through a reducing agent; and taking [6-({[6-(trifluoromethyl) pyridine-3-yl] methyl} amino) pyridine-3-yl] methanol as a raw material, and generating 6-({[6-(trifluoromethyl) pyridine-3-yl] methyl} amino) pyridine-3-formaldehyde through an oxidizing reaction of an oxidizing agent. The synthesis method disclosed by the invention has the advantages of cheap and easily available raw materials, simplicity and convenience in operation, mild reaction conditions, high yield (the total yield is greater than 58.62%) and the like, large-scale production can be realized, and the production cost of Pexidartinib is reduced, so that the market competitiveness of the product is improved.

The invention discloses a disinfectant used for washing red light therapeutic instruments. The disinfectant contains the following components by weight percent: 0.5-1.0% of peroxyacetic acid, 2.0-5.0% of hydrogen peroxide, 0.1-0.5% of pyridine-2-carboxylic acid, 0.01-0.05% of sodium citrate, 1.0-5.0% of salicylic acid, 2.0-6.0% of ethanol and the balance of water. The disinfectant has the beneficial effects that the production cost of the disinfectant is low; the preparation process is simple; the process conditions are easy to achieve; the product stability is good.

The invention relates to the technical field of device welding, and particularly discloses soldering paste. The soldering paste comprises flaky nano-silver, a metal organic source and an organic solvent carrier. The invention further discloses application of the soldering paste in an electronic device packaging interconnection structure, the electronic device packaging interconnection structure comprises a first master slice, a second master slice and a connecting layer which is used for connecting the first master slice and the second master slice, the connecting layer is formed by sintering the soldering paste through a sintering process of heating and applying pressure, and in the sintering process, the heating temperature ranges from 130 DE C to 300 DE C, and the pressure applying pressure ranges from 1 MPa to 20 MPa. The soldering paste can be well applied to the field of electronic packaging of low-temperature welding and high-temperature service, the bonding degree of a connecting interface of the connecting layer formed by sintering the solder paste is good, uniform and compact, the shear strength at 150 DE C can reach 51 MPa or above, and the soldering paste has very high shear strength and can be well applied to packaging and interconnection of electronic devices.

The invention belongs to the technical field of disinfectants, and discloses a B-ultrasound probe disinfectant, which is prepared from the following raw materials: ethanol, o-phenylphenol, glycerin, dichlorophenoxychlorophen, methyl p-hydroxybenzoate, amino polysaccharides, Sodium Lauryl Sulfate, Vitamin E, Deionized Water, Potassium Iodide, Aluminum Hydroxychloride, Honeysuckle, Black Pepper. The invention adopts the method of combining the chemical disinfectant and the plant extract fungicide, reduces the dosage of the chemical disinfectant, and has good compatibility and synergistic effect.

The invention discloses a disinfectant solution for cleaning and disinfecting hemodialysis machines. The product contains 0.5%-1.0% of peracetic acid, 2.0%-5.0% of hydrogen peroxide, and 0.1% of pyridine-2-carboxylic acid in terms of components by weight. %-0.5%, sodium citrate 0.01%-0.05%, sodium dichloroisocyanurate 0.2%-2.0%, sulfamic acid 0.05%-1.0%, and the balance is water. The invention has the advantages of simple preparation process, convenient use, easy realization of process conditions and good product stability.

The invention belongs to the technical field of medical sterilizing agents and discloses a sterilizing agent used for apparatus in a room for B-scan ultrasonography. The sterilizing agent is prepared by steps of 1) mixing and stirring, 2) stirring and allowing the mixture to stand, 3) fully stirring, 4) heating and stirring, 5) extracting with ethanol, concentrating and crushing and 6) stirring, subpackaging and sealing. The sterilizing agent is stable in performance and simple in preparing process.

A method for recovering waste silicon powder from the trichlorosilane synthetic furnace comprises the synthetic furnace and a silicon powder collection tank, and includes steps: A, replacing the synthetic furnace after the synthetic furnace stops normally; B, after replacement is qualified, connecting a silicon powder discharging valve at the bottom of the synthetic furnace with the silicon powder collection tank through a metal hose, and feeding nitrogen into the synthetic furnace through a nitrogen inlet pipeline; and C, turning on the silicon powder discharging valve to enable the silicon powder along with the nitrogen to be brought into the silicon powder collection tank, and emptying the nitrogen through a cloth bag filter at the top of the silicon powder collection tank to enable the silicon powder to be collected into the silicon powder collection tank, so that the silicon powder is fully recycled. The method for recovering waste silicon powder from the trichlorosilane synthetic furnace has the advantages that the method is simple in process, easy in implementation of process conditions and convenient to operate; and waste silicon powder in the synthetic furnace can be fully recycled in reproduction, and dust hazards to personnel bodies during recovery can be avoided. The invention further discloses a device for recovering waste silicon powder from the trichlorosilane synthetic furnace.

The invention discloses a method for intermittently recycling chlorosilane in discharged waste liquid in a washing tower during polycrystalline silicon production, and the method the following steps of: intermittently charging a chlorosilane waste liquid produced in polycrystalline silicon production into an evaporation device at different places, evaporating trichlorosilane and silicon tetrachloride with lower boiling point into a gas state when the temperature of the evaporation device is controlled at 120-180DEG C and the pressure of the evaporation device is controlled at 0.1-0.6MPa, and charging the gaseous trichlorosilane and silicon tetrachloride into a rectifying tower so as to be purified and recycled. The invention further provides the evaporation device used in the method. The invention has the beneficial effects that the method is simple in process, the process condition is easy to realize, and the method is convenient to operate; and the treatment difficulty of the chlorosilane waste liquid during polycrystalline silicon production in the process of production can be improved, the discharge quantity of exhaust liquor can be mainly reduced, the waste of the chlorosilane can be reduced, the treatment load of an alkali liquor pond can be reduced, the environment pollution problem can be remitted, the labor quantity can be reduced, the production cost can be reduced, the complete recycle of the chlorosilane can be realized, and the phenomenon of equipment blockage can be avoided.