6results about How to "Help form" patented technology

The invention provides a fully synthetic cutting fluid special for a copper part and a preparation process thereof. The fully synthetic cutting fluid special for the copper part comprises the following raw materials in parts by weight: 0.5-2.0 parts of a defoaming agent, 1.0-3.0 parts of an antioxidant, 0.5-2.0 parts of a corrosion inhibitor, 2.0-5.0 parts of a surfactant, 0.5-1.5 parts of a metal ion complexing agent and 80.0-100.0 parts of deionized water. Wherein the antioxidant is prepared from carnosol, daidzin and butylated hydroxytoluene. The carnosol and the daidzin can be used for reducing the oxidation reaction by capturing free radicals, and the butylated hydroxytoluene can be used for further enhancing the anti-oxidation effect by interrupting the oxidation chain reaction. And through the combined action and mutual complementation of different anti-oxidation mechanisms, a synergistic effect is formed, and oxidation of the copper part in the machining process is effectively prevented. Wherein the metal ion complexing agent is composed of isothiocyanate, polyaspartic acid and amino trimethylene phosphonic acid, multiple protection mechanisms are formed, and the corrosion resistance of the copper part is remarkably improved. And the existence of the metal ion complexing agent is also beneficial to improving the stability of the cutting fluid.

The invention relates to the technical field of oil field clay anti-swelling, and provides a preparation method of a clay stabilizer with multiple adsorption sites in a molecular structure and containing special groups, benzyl chloride reacts with polyamine in an organic solvent system under the action of a base catalyst to prepare the clay stabilizer, and the clay stabilizer has better high-temperature anti-swelling effect and outstanding washing resistance. The anti-swelling rate of the clay stabilizer at room temperature can be up to 91% at most, the anti-swelling rate after aging at 300 DEG C can be up to 88% at most, the washing resistance rate after multiple times of washing is still kept at 100%, the preparation process is simple, and the clay stabilizer can be used for inhibiting hydration swelling of stratum clay minerals in the water injection process of an oil well.

This invention discloses a pure magnesium and its purification method. The purification method specifically includes the following steps: (1) placing pure Mg into a crucible and placing it in a melting furnace, setting the temperature of the melting furnace to 650~670℃, and introducing CO. 2 and SF 6 The mixture is protected with a gas mixture. After the pure Mg melts, the temperature is raised to 690~720℃. The Mg-5Mn master alloy is added to the crucible. After it is completely melted, the melt is stirred to make the alloy composition uniform. (2) Remove the slag on the surface of the melt, add the refining agent to the melt, and stir it thoroughly. Let it stand for 30~50 min. (3) After the melt cools down, a high-purity magnesium ingot is obtained. This invention can effectively reduce the Fe impurity content in magnesium metal and reduce the inclusions in magnesium metal.

The invention discloses a foam extinguishing agent for preventing and treating forest fire as well as a preparation device and a preparation method. The foam extinguishing agent comprises a component A and a component B, wherein the component A is formed by mixing a base material and a foaming agent; the component B is formed by mixing a foam stabilizer, a flame retardant and aggregate, and the two components are uniformly mixed in water; the corresponding preparation device comprises a stirring and mixing main body, a first stirring structure, a second stirring structure and a double-layer porous plate, and the double-layer porous plate divides the interior of the stirring and mixing main body into a first stirring and mixing space, a second stirring and mixing space and a foam extinguishing agent forming space. The first stirring structure stirs and mixes materials in the first stirring and mixing space, the second stirring structure stirs and mixes materials in the second stirring and mixing space, and finally a foam extinguishing agent is prepared in the foam extinguishing agent forming space; the forest fire extinguishing agent has the characteristics of high foaming rate, large foaming amount and environmental friendliness, can quickly extinguish forest fire, is relatively low in cost and is suitable for fire extinguishing work of large-scale forest fire.

The application discloses a kind of core-shell structure diamond micro powder and preparation method thereof, using highly dispersed few-layer graphene oxide solution to wrap diamond micro powder, then the diamond micro powder wrapped by graphene oxide is reduced to obtain the core-shell structure diamond micro powder wrapped by graphene, the obtained core-shell structure diamond micro powder, graphene is evenly coated on diamond particle outside, after coating, diamond particle is uniformly distributed, dense accumulation arrangement on microstructure, can reduce the friction between diamond micro powder particles under high pressure in the synthesis process of composite sheet, make it more dense accumulation, can solve the uneven distribution of prior art graphene in diamond micro powder, can prevent the residue of excess graphene in sintering process, and help the migration of metal catalyst and the formation of D-D bond, improve the performance of final product, prepare high-density high-strength diamond composite sheet.

The present invention relates to the technical field of inorganic materials, and in particular to a macroporous alumina and a preparation method thereof. The raw materials for synthesizing the macroporous alumina include the following components: potassium carbonate, ethyl acetate, low-carbon alcohol, urea / carboxyl surfactant conjugate, aluminum salt, triethylamine, triethoxysilane, sucrose and water; the urea / carboxyl surfactant conjugate is synthesized by coupling a carboxyl surfactant with urea through EDC / NHS. The present invention prepares macroporous alumina with high specific surface area and excellent pore distribution through the joint action of key components of potassium carbonate, ethyl acetate and urea / carboxyl surfactant conjugate, and the preparation method is simple in process, suitable for large-scale production, and has broad application prospects.