21results about How to "Simple and safe process" patented technology

The invention relates to the technical field of rubber additives, in particular to a cross-linking agent for rubber and a preparation method. The cross-linking agent for rubber is prepared from the following raw materials in parts by mass: 5 to 10 parts of polystyrene microspheres, 1 to 5 parts of tetramethyl orthosilicate, 0.1 to 0.5 part of copper sulfate, 1 to 2 parts of a surfactant, 1 to 2 parts of vinyl trimethoxy silane, 0.01 to 0.1 part of an initiator, 2 to 6 parts of vinyl acetate, 1 to 2 parts of cobalt acetate, 0.01 to 0.1 part of yttrium chloride and 1 to 2 parts of graphene oxide. Transition metal salt and rare earth are compounded and loaded on the surface of grafted silicon dioxide, the specific surface area of the metal salt can be effectively increased, the coordination efficiency is improved, the adding amount of the metal salt is reduced, meanwhile, self-repairing of crosslinking and reinforcing functions can be effectively achieved, and the crosslinking agent is high in stability and has higher environmental tolerance.

The invention discloses a nitrogen-sulfur double-doped PtM / C catalyst as well as a synthesis method and application thereof. The synthesis method comprises the following steps: 1) mixing an organic ligand, a noble metal Pt precursor, an M precursor and a carbon carrier with a non-organic solvent, and drying to obtain a catalyst precursor; wherein M in the M precursor is a transition metal element, the organic ligand comprises doping elements, and the doping elements comprise N and S; and 2) carrying out first calcination on the catalyst precursor in a reducing atmosphere to obtain the nitrogen-sulfur double-doped PtM / C catalyst. According to the method disclosed by the invention, the organic ligand, the noble metal Pt precursor, the M precursor and the carbon carrier are mixed with the non-organic solvent, so that the agglomeration of nanoparticles can be better inhibited, and the performance of the catalyst is improved. In addition, double doping of N and S elements can achieve a synergistic effect. No organic solvent is needed, no organic waste liquid is generated, and the method is environment-friendly and suitable for large-scale production.

The invention discloses a water-oil two-phase microbead essence and a preparation method thereof, and relates to the technical field of cosmetics. Comprising the following raw materials in percentage by weight: 2wt%-5wt% of plant polysaccharide, 0.005 wt%-0.015 wt% of meso-tetramethyl-meso-tetra-p-aminophenyl calix [4] pyrrole, 0.5 wt%-1wt% of hyaluronic acid, 0.3 wt%-1wt% of fish collagen peptide, 0.1 wt%-3wt% of other plant extracts, 8wt%-15wt% of glycerol, 0.1 wt%-0.3 wt% of plant germ oil, 1wt%-4wt% of other vegetable fat, 0.1 wt%-0.3 wt% of hydroxypropyl beta-cyclodextrin, 0.3 wt%-0.5 wt% of ceramide and the balance of water. And the balance of deionized water. The water-oil two-phase microbead essence is high in stability, small in skin irritation and remarkable in whitening, moisturizing, anti-wrinkle and sunscreen effects.

The invention provides a mica nanosheet as well as a preparation method and application thereof, and relates to the technical field of nano material preparation. According to the preparation method of the mica nanosheet, the mica, the ionic liquid and the solvent are mixed and then subjected to ultrasonic treatment, and the large-size ultrathin mica nanosheet is obtained. According to the method, the ionic liquid is used as an intercalation agent and is intercalated between mica sheet layers, so that the distance between the mica sheet layers is enlarged, the interaction force between the mica sheet layers is weakened, the mica nanosheet subjected to ultrasonic treatment is easier to strip, lattice defects are not prone to being generated in the stripping process of the mica nanosheet, and the service life of the mica nanosheet is prolonged. The prepared mica nanosheet is high in quality, few in defect, low in impurity content and good in dispersity, can be used as a barrier functional filler of a heat-conducting sheet, a heat-conducting composite material, polyester or an anticorrosive coating, and has a good application prospect.

The invention relates to a branched polymer for selective water control of an oil well and a preparation method thereof, and belongs to the technical field of oilfield chemistry. The preparation method comprises the following steps: firstly, carrying out formylation modification on nano-cellulose by using an oxidizing agent, then carrying out Schiff base reaction on the formylated nano-cellulose and polyethylene polyamine to realize amination modification, and then reducing the nano-cellulose by using a reducing agent to improve the dispersity and reaction activity of the nano-cellulose. On the basis, through an oxidation-reduction reaction between the aminated nanocellulose and Ce < 4 + >, a nonionic water-soluble monomer, an anionic water-soluble monomer, a hydrophobic monomer and the like are used as raw materials, and a polymer with a branched structure is prepared through aqueous solution polymerization. The branched polymer has high molecular rigidity, and the temperature resistance, salt resistance and retention capacity of the branched polymer are remarkably improved. Tests show that the branched polymer still keeps an excellent selective water control effect under long-term scouring of a large amount of liquid.

The utility model relates to cleaning of a valve shell structure, in particular to a self-cleaning ball valve for a high sulfur gas field. The self-cleaning ball valve for the high-sulfur-content gas field comprises a valve body, a valve ball is arranged in a valve cavity of the valve body, and the valve body is connected with a dosing system used for filling cleaning solvent into the valve cavity, a pressure relief system used for discharging sulfur-containing gas in a pipeline and a waste liquid recovery system used for recovering waste cleaning solvent. A dosing system and a pressure relief system are connected to a valve body of the ball valve, and a waste liquid recovery system is connected to the bottom end of the valve body. In the whole cleaning process, the ball valve does not need to be opened, cleaning of all sulfur-containing impurities is completed in the ball valve, cleaning personnel are prevented from making contact with harmful sulfur-containing gas or sulfur-containing simple substances, meanwhile, the cleaning solution can thoroughly clean away water-insoluble or indissolvable impurities, the ball valve cleaning process is simpler and safer, and the cleaning efficiency is improved. And the cleaning effect of the ball valve is more obvious.

The present application relates to a kind of micro CO efficient removal adsorbent and its preparation and application, the preparation method includes the following steps: (1) active carbon powder, active component A, inorganic clay and dispersing agent are placed in ball mill and are uniformly ground, and mixture material is obtained;(2) active component B and the water solution of reducing agent are atomized and sprayed into the mixture material, then glue is added, and wet material is obtained;(3) wet material is extruded into shape by template, after heat reduction, after drying, calcination, CO removal adsorbent is obtained, i.e. target product;Active component A is monovalent copper salt, and active component B is the mixture of lanthanum chloride and at least one of cerium chloride or yttrium chloride.The strength and adsorption capacity of the CO removal adsorbent of the present application are increased by more than 30% and 25% respectively, the strength is ≥40N / cm, the wear is ≤1.5wt%, the CO adsorption capacity is ≥35ml / g (40℃), the removal precision can reach below 0.01ppm, suitable for the efficient purification of trace CO in hydrogen, nitrogen and other raw gas.

The invention discloses a method for improving the flavor of peanut oil by utilizing germination pretreatment. The method specifically comprises the following steps: step 1, cleaning raw materials; step 2, soaking and imbibing the peanuts until the moisture content of the peanuts is 30-50%; 3, peanut germination pretreatment: during germination, peanuts are in a critical infiltration state and are uniformly placed in a tray, the interval between every two adjacent peanuts is about 1-2 cm, the tray is placed in a constant-temperature and constant-humidity incubator, and culture is performed for 6-48 h under the conditions that the temperature is 25-30 DEG C and the humidity is 60-100%; step 4, drying the peanuts: drying the germinated peanuts until the moisture content is 5-15%; step five, baking the peanuts: baking the peanuts to produce fragrance; and step 6, squeezing and extracting oil: physically squeezing the baked peanuts by using a spiral or hydraulic squeezer, filtering to remove impurities, and taking clear grease on the upper layer to obtain the strong-fragrance peanut oil. On the basis of not changing a peanut oil production process, compared with peanut oil prepared by a traditional process, the prepared peanut oil is fuller in flavor and richer in fragrance, and meanwhile, the high oil yield is still kept.

The invention relates to the field of batteries, and discloses a gluconate-derived hard carbon negative electrode material, a preparation method of the gluconate-derived hard carbon negative electrode material, a negative electrode and a lithium ion battery. And performing second heat treatment on the intermediate in an inert gas atmosphere to obtain the hard carbon negative electrode material. The process of the first heat treatment comprises a first heat treatment step and a second heat treatment step, the temperature of the first heat treatment step is 400-600 DEG C, the time is 1-2 hours, and the temperature of the second heat treatment step is higher than that of the first heat treatment step; the second heat treatment process comprises a third heat treatment step and a fourth heat treatment step, the temperature of the third heat treatment step is higher than the temperature of the second heat treatment step and lower than the temperature of the fourth heat treatment step, the temperature of the fourth heat treatment step is 1300-1500 DEG C, and the time is 50-150 minutes. And higher lithium storage capacity is achieved in the ether-based electrolyte.

The utility model discloses a uniform material's flotation machine feed ear box, including ore pulp delivery pipe, mixed buffer tank, mixed discharge pipe and feed ear box, a plurality of ore pulp delivery pipes are connected with the top of mixed buffer tank, and the front end center position is connected with mixed discharge pipe, and the export of mixed discharge pipe is connected feed ear box, the both sides of feed ear box bottom are installed with flotation machine feed pipe, and the inboard of feed ear box bottom feed pipe is installed with two distribution baffle and distribution gate, and the height of different distribution gate is adjusted, and the ore pulp quantity of different feed pipe of feed ear box bottom is controlled. Solve the double row flotation machine ore pulp feeding of prior art and cannot evenly distribute, cause the problem of low running efficiency of flotation machine, and the fluctuation of flotation froth layer thickness is big.

The invention aims to provide a method for improving reactivity of lump coal for a blast furnace, and belongs to the technical field of fuels for blast furnaces, and the method specifically comprises the following steps: preparation of a modifier, optimization and pretreatment of target smokeless lump coal for the blast furnace, spraying and infiltration of the optimized smokeless lump coal with high compressive / abrasive strength by using the modifier, and drying. And an interactive modulation process of the modifier and lump coal under a pulsed magnetic field / low-temperature field coupling effect. The method effectively improves surface functional groups of the coal and defect structures of internal shallow layers, so that the reaction performance of the coal is improved, and the strength of the coal is kept.

The invention discloses preparation and application of a vanadium-based adsorption arsenic removal material, and belongs to the technical field of water treatment. The preparation method of the material comprises the following steps: mechanically ball-milling and mixing a vanadium-containing compound, a metal salt compound and ammonium carbonate according to a certain proportion, preparing vanadate by a high-temperature calcination method, and mechanically ball-milling to obtain the arsenic adsorption and removal material. The vanadium-based adsorption arsenic removal material disclosed by the invention is simple in preparation process, cheap and easily available in raw materials and low in cost, and meanwhile, the porous vanadium-based adsorption arsenic removal powder prepared by the method disclosed by the invention is high in arsenic adsorption capacity which is greater than 2000mg / g.

The invention discloses a method for enhancing oxidation resistance of caramel color, which comprises the following steps: (1) mixing an amino acid solution and a caramel color solution according to different volume ratios to obtain a mixed solution; (2) adjusting the pH value of the mixed solution; and (3) heating the mixed solution, carrying out condensation reflux, and cooling. By adjusting Maillard reaction conditions and controlling the UV-Vis absorbance and fluorescence intensity of a reaction system, the oxidation resistance of the caramel color food can be effectively improved, and the caramel color food is endowed with good oxidation resistance, so that oxidative deterioration of the food is prevented or delayed, and the shelf life of the food is more remarkably prolonged.

The present invention relates to a wind turbine blade having a serrated trailing edge. Flow-guided vanes are arranged on the serrations to prevent lateral flow over the edges of the serrations, which are preferably positioned incidentally to the flow over the wind turbine blade. The vanes can be formed as a single unit with the serrations or attached to existing serrations as a retrofit solution. The serrations with the vanes can be supplied as a trailing edge panel for attachment to the trailing edge of an existing wind turbine blade.<!--endfragment-->

The invention belongs to the technical field of electrochemical sensors, and particularly relates to an electrochemical sensor based on cobaltosic oxide-vinegar residue derived N-doped porous carbon and application of the electrochemical sensor in dopamine detection. A specific response unit of the electrochemical sensor is a working electrode, and the working electrode is a cobaltosic oxide-vinegar residue derived N-doped porous carbon modified electrode. The cobaltosic oxide-vinegar residue derived N-doped porous carbon is obtained by in-situ growth of Co3O4 derived from a metal organic framework material ZIF-67 on a wrinkled porous self-doped nitrogen carbon-based material derived from industrial solid waste vinegar residue. The electrochemical sensor constructed by utilizing the cobaltosic oxide-vinegar residue derived N-doped porous carbon modified electrode shows good dopamine electrocatalytic activity, has a wide linear response range and good reproducibility and stability, can be used for analyzing an actual biological sample, and has a wide application prospect. And high-sensitivity real-time monitoring of dopamine can be realized.

The invention discloses a microneedle for treating periodontitis as well as a preparation method and application of the microneedle, the active ingredient of the microneedle is a compound with osteogenesis and anti-inflammatory effects, and the compound is mesoporous silica loaded with alpha-ketoglutaric acid; the mass ratio of the mesoporous silica to the alpha-ketoglutaric acid is (1: 4)-(4: 1). The modified SiO2 with a unique spike structure is used as a carrier of the alpha KG, and the modified SiO2 and the alpha KG are compounded together in a carrying manner and jointly act on an affected part, so that cell membrane defensive lines of various cells such as macrophages and bone mesenchymal stem cells are easily broken through, and efficient immunoregulation and bone metabolism regulation effects are achieved in vivo. And a synergistic effect is generated in the aspect of osteogenesis and anti-inflammation.

The invention discloses a photochemical synthesis method of a vonoprazan intermediate, and belongs to the technical field of drug intermediate synthesis, the synthesis method comprises the following steps: (1) 2-bromo-1-(2-fluorophenyl) ethyl-1-ketone and acetaldehyde are subjected to a white light irradiation reaction under the action of a photosensitizer and alkali to obtain 4-(2-fluorophenyl)-4-oxobutyraldehyde; (2) carrying out a Paal-Knorr condensation reaction on the 4-(2-fluorophenyl)-4-oxobutyraldehyde and ammonium acetate under the action of an acid catalyst and a dehydrating agent, so as to obtain 2-(2-fluorophenyl)-1H-pyrrole; (3) carrying out formylation reaction on the 2-(2-fluorophenyl)-1H-pyrrole and 1, 1-dichloromethoxymethane under the action of a Lewis acid catalyst, so as to obtain a vonoprazan intermediate; the method has the advantages of cheap and easily available raw materials, high product yield, safe and simple process, mild reaction conditions and low cost, and is suitable for industrial production.

The invention relates to the technical field of chemical production, and discloses a production method of L-p-hydroxyphenylglycine methyl ester.The production method comprises the following steps that absolute methanol is added into an esterification kettle; introducing dried and purified hydrogen chloride gas; l-p-hydroxyphenylglycine is added into the mixture; carrying out temperature control treatment on the esterification kettle and then carrying out esterification dehydration; adding deionized water and a small amount of seed crystal, and carrying out cooling treatment; carrying out spin-drying and crushing treatment after centrifugal separation; according to the production method of the L-p-hydroxyphenylglycine methyl ester, the chlorinated paraffin byproduct hydrogen chloride is used as an acid catalysis and reaction agent, the L-p-hydroxyphenylglycine and methanol are esterified to form L-p-hydroxyphenylglycine methyl ester hydrochloride, then the free L-p-hydroxyphenylglycine methyl ester is neutralized with alkali, and the L-p-hydroxyphenylglycine methyl ester hydrochloride is obtained. The process is simple and safe, the cost is lowest, and the produced salt is good in quality and can be used for industry.

The invention discloses a glass scintillator for thermal neutron detection, the glass scintillator is rich in 6Li and 10B element compounds with large neutron capture cross sections, the total mole amount of Li2O and B2O3 can reach up to 80 mol%, the highest content of Li2O is 40 mol%, the neutron capture ability of the glass scintillator is significantly enhanced, and the neutron detection efficiency is further improved. The invention also discloses a preparation method of the glass scintillator, most of trivalent europium in the glass is reduced into divalent europium by constructing a reducing atmosphere, and a proper amount of silicon nitride is supplemented to enhance the reduction effect of the trivalent europium, so that the concentration ratio of the divalent europium is further enhanced, and the glass scintillator is prepared. Or by prolonging the melting time of the lithium borosilicate glass scintillator, the concentration proportion of divalent europium in the glass is further improved, the negative influence of trivalent europium in the glass on neutron detection is reduced, and the efficiency of neutron detection is further improved.

The invention relates to a preparation method of hollow carbon spheres with high stability and strong electrorheological efficiency. The problem that the performance is affected due to easy sedimentation during use in the prior art is solved. Comprising the following steps: 1, carrying out a stirring reaction on an organic microsphere and a phenolic compound in a room temperature environment to obtain a copolymer solution, 2, respectively washing the copolymer solution with water and ethanol, carrying out suction filtration, and carrying out vacuum drying on the copolymer solution to obtain a core-shell microsphere, and 3, carrying out high-temperature calcination on the core-shell microsphere to obtain a core-shell composite material. And 4, dewatering the insulating oil, and uniformly mixing the hollow carbon spheres with the insulating oil to obtain the hollow carbon sphere-based electrorheological fluid. The hollow carbon spheres prepared by the invention effectively avoid the problems of high density and single preparation raw material of traditional electrorheological particles.

The invention discloses a method for improving the flavor of sesame oil by utilizing germination pretreatment. The method specifically comprises the following steps: step 1, cleaning raw materials; step 2, soaking the sesame seeds in water for 1-4 hours until the water content is 30-45%; step 3, uniformly placing the imbibed sesame seeds in a tray, placing the tray in a constant-temperature and constant-humidity incubator, setting the temperature to be 25-30 DEG C, setting the relative humidity to be 60-100%, and cultivating for 2-24 hours, wherein the spreading thickness of the sesame seeds is less than or equal to 1 cm; step 4, drying the sesames: drying the sesames subjected to germination treatment until the moisture content is 5-15%; step five, baking the sesame to produce fragrance; and 6, extracting oil by adopting a physical squeezing or stone milling water extraction method, and filtering to remove impurities to obtain the sesame oil. On the basis of not changing the existing sesame oil production process, compared with the sesame oil prepared by the traditional process, the prepared sesame oil is fuller in flavor and richer in fragrance, and meanwhile, a relatively high oil yield is still kept.