212 results about "Triethylamine phosphate" patented technology

The invention relates to a method for in-situ polymerization and modification of a polyvinylidene fluoride microporous membrane. In the method, polyvinylidene fluoride microporous is dissolved in triethyl phosphate at first to prepare membrane-forming precursor solution, active solution is added into the membrane-forming precursor solution for in-situ polymerization under nitrogen protection, the mixture is kept static for 18-36 hours at the reaction temperature after reaction, membrane casting solution is prepared via deaeration and is processed by a membrane forming machine to prepare a primary membrane, the primary membrane is soaked in a coagulating bath for 0-3 hour(s) and is then transferred into an deionized water bath to be immersed for 1-48 hour(s) so as to be cured into a membrane, the membrane is naturally dried in the air at the room temperature, and thus the dry hydrophilic polyvinylidene fluoride membrane is prepared. The method is environmentally friendly, the reaction conditions are mild, the preparation method is simple, modification and preparation are completed simultaneously, the repeatability is good, the method cannot be limited by the type of the microporous membrane, a high-flux separating membrane can be obtained with no needs for external pore-forming agents, and the prepared microporous membrane is a dry hydrophilic membrane.

The invention provides a group of polyhydroxy stilbene compounds, their preparing process and use for suppressing and eradicating SARS coronavirus. The preparing process comprises, preparing phosphonic ester by reacting multi-alkyl substituted chloro (bromo) methoxyl or pyridine compounds with triethyl phosphate, then reacting phosphonate ester compound with multi-alkyl (oxy) phenylpyridine methyl aldehyde to obtain multi-alkyl (oxy) stilbene compounds. Finally acting with boron tribromide to obtain polyhydroxy stilbene compounds with substituent groups.

The invention discloses a high cold-resistance ethylene propylene diene copolymer insulated cable material and a preparation method thereof. The cable material is made of the following raw materials in parts by weight: 100-120 parts of Lanxess Deutschland 9650 ethylene propylene diene copolymer, 20-30 parts of active chlorine type acrylic rubber AR-400, 10-15 parts of duprene rubber CR121, 10-15 parts of di-butyl nylonic acid ester, 5-10 parts of trioctyl trimellitate, 5-10 parts of triethyl phosphate, 1-2 parts of sulphur, 2-4 parts of benzoyl peroxide, 1-2 parts of triallyl isocyanurate and the like. The cable material not only has excellent flame retardance and incombustibility, but also has the advantages of good high and low temperature resistance, corrosion resistance, water resistance, wear resistance, ozone resistance, ageing resistance and the like at the same time, and is durable in use.

The invention provides a synthesis method for glufosinate shown as a formula (V) and an analogue thereof. The method comprises the following steps of: preparing an intermediate such as methyl diethyl phosphate by Grignard, disproportionation and coupling and with phosphorus trichloride, triethyl phosphate and chloromethane as initiative raw materials; condensing the methyl diethyl phosphate, anhydride and acrolein substances; performing Strecker reaction and hydrolysis and thus obtaining the glufosinate and the analogue thereof. In the synthesis method, the reaction condition is mild; safety is high; and yield is obviously increased.

The invention belongs to the field of electric power materials, and discloses a degradable packaging plastic for electric power systems, which is prepared from the following raw materials in parts by weight: 30 parts of low-density polyethylene, 20 parts of polyvinyl alcohol, 15 parts of poly(butylene succinate), 12 parts of polyvinylpyrrolidone, 9 parts of hydroxymethyl cellulose, 7 parts of polyhydroxyacetic acid, 6 parts of chitosan, 4 parts of polylactic acid, 3 parts of triethyl phosphate, 3 parts of micalex powder, 2 parts of talcum powder, 2 parts of corn starch, 1 part of sodium succinate and 1 part of epoxy soybean oil. The plastic material has favorable tensile strength, elongation at break and biodegradability, and greatly lowers the environmental pollution.

The invention provides a lubrication cutting agent and a preparation method thereof. The lubrication cutting agent comprises: 10-40 parts of sulfurized cutting oil, 5-10 parts of naphthenic oil, 2-6 parts of triethyl phosphate, 1-4 parts of dinonyl naphthalene barium sulfonate, 0.2-1.5 parts of 1,2,6-butylated hydroxytoluene, 0.5-2.8 parts of dodecyl phenyl succinic acid, 1-5 parts of stearic acid, 0.1-1.2 parts of triethanolamine boric acid ester, 0.5-3.2 parts of sodium citrate, 0.3-1.2 parts of polyacrylamide, 12-18 parts of sodium dodecyl benzene sulfonate, 0.01-0.1 part of dodecenylsuccinic acid, 1-7 parts of oleamide, 5-13 parts of ethylenediamine tetraacetic acid tetrasodium, 0.2-0.8 part of chlorinated paraffin and 10-20 parts of hydrophilia polyhydric alcohols. The preparation method comprises steps of firstly, uniformly mixing a part of the components, and secondly, adding the rest components. The lubrication cutting agent provided by the invention has remarkable effects on improving the surface smoothness of a workpiece and alleviating abrasion of a cutter.

The invention relates to a method for preparing imatinib, which comprises the following steps of: with a compound N-(5-Amino-2-methylphenyl)-4-(3-pyridyl)-2-pyrimidineamine shown as the structural formula (II) and a compound 4-[(4-Methylpiperazin-l-yl)methyl]benzoic acid shown as the structural formula (III) as initial raw materials, dropwise adding phosphite ester at 50-90 DEG C for 1-2 hours inthe presence of a catalyst in an organic solvent; and continuously insulating and reacting at 50-90 DEG C to obtain the compound imatinib shown as the structural formula (I). The organic solvent is N,N-dimethylformamide, N,N-dimethylacetylamide or N-methylpyrrolidone. The catalyst is pyridine; and the phosphite ester is trimethyl phosphate, triethyl phosphate or triphenyl phosphate. The technical scheme of the invention has the advantages of simple reaction step, easy control of reaction, short production cycle, low toxicity of used raw materials, less pollution to the environment and higher product quality, and the yield can reach 95 percent, and the purity reaches 99.5 percent.

The invention relates to a production method of triethyl phosphite, which belongs to the technical field of chemical production. Absolute ethyl alcohol, phosphorous trichloride are taken as main material, pure benzol is taken as solvent, triethylamine is taken as acid-binding agent, liquid ammonia is taken as reducing agent, and the triethyl phosphate is prepared through the processes of three-complex liquor preparing, synthetic reaction, water scrubbing reaction, layering, drying, crude distillation, rectifying, recovering and ammonia recovery and the like. The method adopts continuous production process of triethylamine, the material charging and the product discharging are continuous, the production capacity is strong, and the product quality is stable. With equal equipment and investment, the capacity of the method can be 6 to 7 times as the capacity of intermittent method. The method solves the problems of the prior production method that the production capacity is small, the production cycle of the product is long, the material consumption is large, the quality is unstable, the discharge amount of 'three wastes' is large, and the yield can not be guaranteed. The method has the advantages that the liquid ammonia is taken as reducing agent, the cost is low, the recovery factor of excess ammonia can reach more than 90 percent, the recovered ammonium chloride can be used as the crude product of ammonium fertilizer, the production cost is lowered, and the environmental pollution is reduced.

A preparation method of triethyl phosphate belongs to the field of chemical industry. After phosphorus oxychloride and absolute ethyl alcohol are subjected to low-pressure esterification reaction, excessive absolute ethyl alcohol and partial chlorine hydride are sequentially removed under reduced pressure, residual chlorine hydride is removed under normal pressure and rectification is carried out under reduced pressure to obtain the finished product of triethyl phosphate. With the addition of a catalyst, the temperature of esterification reaction is lowered and the reaction speed is increased, namely, the temperature is lowered to 25 to 35 DEG C from almost 50 DEG C before, and after excessive absolute ethyl alcohol is removed, ammonia is added for neutralization to remove chlorine hydride without water introduction, thus avoiding hydrolyzing triethyl phosphate; and the entire process is simple, high in yield and low in production cost.

The invention provides high-durability floor wax, and belongs to the technical field of a furniture cleaning agent. The high-durability floor wax comprises the following raw materials by weight: 20 to 30 parts of wax, 3 to 6 parts of beewax, 2 to 3 parts of oxidized polyethlene wax, 5 to 8 parts of Vaseline, 2 to 5 parts of triethanolamine, 5 to 10 parts of stearic acid, 3 to 7 parts of cellulose, 1 to 3 parts of butoxy triethyl phosphate, 2 to 4 parts of diglycol diethyl ether, 1 to 3 parts of dioctyl maleate, 2 to 3 parts of surface active agent, 4 to 6 parts of simethicone, 2 to 4 parts of emulsifying agent, 3 to 6 parts of odorless kerosene, 3 to 5 parts of ammonia water, 1 to 2 parts of benzimidazole methyl carbamate, 2 to 3 parts of silane coupling agent and 200 to 400 parts of water. With the adoption of the floor wax provided by the invention, the glossiness of the surface of a floor can be effectively improved, scratches can be shielded, and the damage of the friction on the floor surface to the floor can be effectively prevented; and after being subjected to a friction test, the floor wax also has high brightness and has no scratch.

The invention discloses a preparation method of a dental bioactive zirconia ceramic material. The preparation method comprises steps as follows: with adoption of a method for preparing bioactive glass from sol-gel, a hydrolysable silicone-containing compound, triethyl phosphate, calcium nitrate, other nitrates and the like are added to deionized water, pH is regulated, a mixed solution is subjected to hydrolytic condensation, and bioactive glass sol is obtained; after being soaked in the prepared bioactive glass sol in a vacuum negative-pressure environment for a period of time, a zirconia pre-sintered body is taken out, dried and sintered at the high temperature, and the dental bioactive zirconia ceramic material is obtained. The bioactive zirconia ceramic material has good biological activity and excellent mechanical properties and has great social and economic value in improvement of the dental material repairing effect and promotion of wider clinical application of the material.

The invention discloses a synthesis method for resveratrol, including (1) discharging hydrogen bromide gas to benzene solution of p-methoxy benzyl alcohol to obtain p-methoxy benzyl bromide, (2) carrying out reaction of p-benzyl bromide with triethyl phosphate to obtain diethyl p-methoxy benzyl phosphate, (3) carrying out reaction of diethyl p-methoxy benzyl phosphate with sodium amide and 3,5-dimethoxybenzaldehyde to obtain (E)-3, 4', 5-trimethoxystilbene, and (4) carrying out reaction of (E)-3, 4', 5- trimethoxystilbene with aluminum iodide to obtain the final product. The invention has the advantages of raw materials easy to get, lowered cost, mild reaction conditions, simplified operation, and enhanced yield.

The invention discloses a micro-nano bioactive glass microsphere with a surface nanometer pore structure and a preparation method thereof. The method comprises the following steps of (1) mixing water, ethanol and calcium nitrate tetrahydrate into a water phase solution; mixing tetraethoxysilane and cyclohexane into an oil phase solution; (2) mixing the water phase solution and the oil phase solution; then, sequentially adding surfactants, catalysts and triethyl phosphate; performing uniform stirring to obtain a bioactive glass gel solution; (3) performing centrifugal separation on the bioactive glass gel solution; performing cleaning to obtain wet state gel precipitates; then, performing drying to obtain the bioactive glass gel powder; (4) performing heat treatment on the obtained bioactive glass gel powder to obtain the micro-nano bioactive glass microsphere with the surface nanometer pore structure. The micro-nano bioactive glass microsphere has the advantages of good dispersivity and high specific surface area, can be used for loading medicine, bioactive molecules and the like, and belongs to an ideal micro-nano bone restoration carrier microsphere.

The invention discloses a biological active microsphere and a preparation method thereof. Based on molar percentage, the microsphere is composed of 16- 36% of CaO, 4% of P2O5 and 60-80% of SiO2 composition; the particle size of the microsphere 1-5 [mu]m; and the microsphere is in a hollow ball shape. The preparation method of the biological active microsphere comprises the following steps of preparing an acid catalyst polyethylene glycol solution A according to a proportion, adding tetraethoxysilane, triethyl phosphate and calcium nitrate terahydrate into the solution A respectively in order according to a molar ratio of 60-80 : 4 : 16-36 to form a gel B; hydrothermal ageing the gel B at the temperature of 60 DEG C and drying at the temperature of 37 DEG C to obtain a dry gel; grinding the dry gel and performing heat treatment on the grinded dry gel at the temperature of 600 DEG C-800 DEG C to obtain a target product. Compared with a conventional biological active microsphere, the biological active microsphere provided by the invention is in regular sphere shape with a hollow structure and smooth surface; the particle size of the microsphere 1-5 [mu]m; a particle size distribution range is narrow and uniform; and the biological active microsphere has excellent fluidity, syringeability and security and is simple in preparation process.

The invention discloses an impact-resistance-modified polyvinyl chloride composite material which is prepared from polyvinyl chloride, polyurethane, methyl methacrylate-butyl acrylate copolymer, polystyrene, polytetrafluoroethylene, nano graphite microsheets, magnesium hydroxide, zinc stannate, zinc borate, chlorinated paraffin, organic modified montmorillonite, poly-4-methyl-1-amylene, sulfonated polyethersulfone, methyl tin mercaptide, epoxy soybean oil, pentaerythritol, tri(2,4- di-tert-phenyl) phosphite, hexamethyl phosphoric triamide and triethyl phosphate. The impact-resistance-modified polyvinyl chloride composite material disclosed by the invention has the advantages of favorable toughness, excellent impact resistance, excellent processability, high flame retardancy and favorable antistatic property.

A derivative of dibenzo-tetrathiafulvalene-tetrahydroxy-succinimide is provided, which has the structure shown by the right formula, in which R represents an alkyl. The preparation method includes the following procedures that: A) a mixture of dichlorophthalic anhydride and amine with the molecular ratio of 1: 1.5-3 undergoes circumfluence in propionic acid under 140 DEG C to 160 DEG C for 2-4 hours, B) the products obtained in procedure A is mixed with benzyl mercaptan with the molecular ratio of 1:2-3 and then undergoes calefaction in dimethylacetamide under the condition with excessive dosage of K2CO3 under 60 DEG C to 80 DEG C and, C) the product obtained in procedure B is kept in dry toluene with excessive dosage of AlCl3 to undergo debenzylation, and then reacts with carbonyldiimidazole under 70 DEG C to 90 DEG C for 2-5 hours, wherein the molecular ratio between 4,5-[(diphenylmethyl)thio substituted]- phthalimide and the carbonyldiimidazole is 1:1-3 and, D) the product obtained in procedure C undergoes circumfluence in a mixture of toluene / triethyl phosphate, the molecular ratio of which is 2-3 / 1 to carry out the auto-coupling reaction for 2-5 hours, the product of which is cooled down and filtrated to obtain the target product.

The invention discloses a preparation method for 9-beta-D-arabinofuranosyl-2-fluoroadenine-5'-phosphate. The method employs 9-beta-D-arabinofuranosyl-2-fluoroadenine as an initial raw material, enables the raw material to be reacted with a mixture of triethyl phosphate and phosphorus oxychloride and employs water for post-processing, thereby solving the problems in other synthetic methods that reaction temperature is sever, reaction time is long and post-processing operation is complex. Also, the invention discloses a simple practicable refining method, and helps to effectively improve the purity of 9-beta-D-arabinofuranosyl-2-fluoroadenine-5'-phosphate.

The invention discloses an anti-corrosion concrete material and a preparation method thereof. The anti-corrosion concrete material comprises components in parts by weight as follows: 150-180 parts of Portland cement, 40-60 parts of fly ash, 8-18 parts of mineral cotton, 120-180 parts of gravel, 80-160 parts of glass flakes, 80-120 parts of fine sand, 12-36 parts of calcium chloride, 12-25 parts of magnesium silicate, 1-8 parts of barium silicate, 1-8 parts of sodium benzoate, 8-16 parts of calcium silicate, 4-12 parts of aluminum dihydrogen phosphate, 6-16 parts of strontium oxide, 4-12 parts of brucite powder, 2-10 parts of zinc dust, 10-20 parts of zinc oxide, 2-10 parts of sodium metaaluminate, 2-10 parts of polyvinyl alcohol, 15-30 parts ofdihydrate gypsum, 1-4 parts of aluminum tripolyphosphate, 1-4 parts of potassium tripolyphosphate, 1-4 parts of monopotassium phosphate, 6-8 parts of bisphenol A epoxy acrylate, 1-3 parts of trimethylolethane, 2-10 parts of polyacrylamide, 1-3 parts of xylitol, 1-4 parts of triethyl phosphate, 1-4 parts of butyl methacrylate, 1-4 parts of acrylonitrile, 2-4 parts of triethoxyisobutylsilane, 6-10 parts of sodium allylsulfonate, 4-16 parts of calcium lignosulphonate, 1-6 parts of a water reducing agent and 60-100 parts of water.

Water-soluble hot melt adhesive for temporary bonding is mainly used for the precise processing process of crystal materials such as quartz and monocrystalline silicon and has a function of temporary bonding. The hot melt adhesive adopts water-soluble polyester as matrix resin, rosin or modified rosin as a thickening agent, and any one of or a composition formed by any two of glycerin monostearate, triethyl phosphate, ethylene glycol, glyceryl triacetate and the like as a modifying agent. Compared with a traditional product, the hot melt adhesive can meet requirements of precise processing, most of the hot melt adhesive can be removed by using hot water, and all hot melt adhesive can be removed by continuously using 30w% of sodium hydroxide solution. In addition, the hot melt adhesive has the advantages of being removed through hot water and ordinary alkali liquor and does not pollute the environment.

The invention discloses a symmetric benzimidazole ruthenium complex and its preparation method and belongs to the technical field of synthetic chemistry. According to the preparation method, 2,4,6-trismesitylene and triethyl phosphate are used as starting materials, a fixed ligand is synthesized by a two-step method, and the fixed ligand finally reacts with ruthenium trihydrate under the microwave condition so as to synthesize the target product. The synthesized symmetric benzimidazole ruthenium complex has excellent stability and optical and electrochemical properties. Through covalent bond effect between symmetric phosphate groups at two ends of the molecule and the surface of a conductive substrate such as ITO and the like, the symmetric benzimidazole ruthenium complex molecule is fixed to the conductive substrate and layer-by-layer self-assembly is realized. The symmetric benzimidazole ruthenium complex is an excellent photosensitizer. In addition, the designed synthesis process of the symmetric benzimidazole ruthenium complex is simple, costs are low, and the microwave-assisted synthesis technology is rapid and efficient.

The invention discloses a method for preparing an aluminum nitride electronic ceramic base plate by using a tape casting method. The method comprises the following steps: preparing tape casting slurry, and molding the tape casting slurry by using the tape casting method, thereby obtaining the aluminum nitride electronic ceramic base plate, wherein the tape casting slurry comprises a benzene-free mixed organic solvent, aluminum nitride ceramic powder and sintering aids; the benzene-free mixed organic solvent comprises three or more than three of absolute ethyl alcohol, isopropyl alcohol, n-butyl alcohol, triethyl phosphate and dibasic acid ester; and the solvent accounts for 28-40% of the mass of the aluminum nitride ceramic powder. The invention further provides a method for preparing high-solid content aluminum nitride tape casting by using an organic solvent which is non-toxic, relatively environmentally friendly and low in cost. The aluminum nitride electronic ceramic base plate which is high in density, uniform in microstructure and high in heat conductivity is prepared under a relatively low high temperature condition, and the tape casting production process is green and environmentally friendly and applicable to industrial popularization.

The invention discloses a method for recovering useful constituents such as tetrahydrofuran, methyl diethyl phosphate, triethyl phosphate and trimethylbenzene in a mixed waste solvent during a process of producing glufosinate ammonium by an integrated rectification process. The method comprises the following steps: using an integrated rectification process of discharging and rectifying in a single-tower side line and then connecting a single tower to rectify, directly extracting tetrahydrofuran from the top of the rectification tower in the side line and obtaining trimethylbenzene from the bottom of the tower; extracting the mixed solution of methyl diethyl phosphate and triethyl phosphate from the side line simultaneously, conveying the mixed solution to the rectification tower and carrying out single-tower separation, thereby obtaining methyl diethyl phosphate from the top of the tower and obtaining triethyl phosphate from the bottom of the tower. According to the method disclosed by the invention, the useful constituents in the mixed waste solvent during the glufosinate ammonium production process are recovered by the integrated rectification process, the total recovery rate of the mixed solvent exceeds 98%, and the quality achieves reuse standards. Compared with the conventional three-tower rectification method, the equipment cost and energy consumption of the method disclosed by the invention are obviously lowered.

The invention discloses a preparation method of a bioactive glass-wrapping modified zirconium oxide dental ceramic material. The method comprises the specific steps that a hydrolysable silicon-containing compound, triethyl phosphate and nitrate are dissolved in a solvent, the pH value is adjusted, the mixed solution is subjected to a hydrolytic condensation reaction, and bioactive glass precursorsol is obtained; a zirconium oxide suspension solution which is evenly dispersed in advance is added to the bioactive glass precursor sol and evenly dispersed, the sol is converted into gel through aging, a layer of extremely-thin bioactive glass wraps the peripheries of zirconium oxide particles, and after high-temperature sintering, the bioactive glass-wrapping modified zirconium oxide dental ceramic material is obtained. The zirconium oxide dental ceramic material has good biological activity and excellent mechanical properties, proliferation and osteogenic differentiation of bone marrow mesenchymal stem cells can also be promoted at the same time, and accordingly the material helps to improve the osseointegration capacity; the effect of repairing the dental material is improved, the wider clinical application of the material is promoted, and the material has high social economic value.

The invention discloses a method for preparing triethyl phosphate, which is characterized by comprising: a step of esterification, which is to react phosphorus oxychloride with ethanol according to a molar ratio of the phosphorus oxychloride to the ethanol of 1:(1-5) in a jacket type cooling and stirring container set, obtain the mixture of ethanol and hydrogen chloride which are volatile components, condense the mixture in a reflux condenser, and absorb the incondensable volatile hydrogen chloride component by a washing tower circulating membrane absorption unit; a step of dealcholization and dehydrochlorination, which is to fill the reaction mixture obtained after esterification into a degassing distillation tower, remove the volatile components, namely ethanol and hydrogen chloride, in the reaction mixture, separate the excessive ethanol and hydrogen chloride, which are obtained from esterification materials, from triethyl phosphate, mainly obtain 95-to-98.5-weight-percent triethyl phosphate from the bottom of the degassing distillation tower, and obtain 99.99-percent triethyl phosphate and 67-percent diethyl phosphateby rectifying and separating; and a step of hydrogen chloride absorption, which is to introduce the hydrogen chloride gas obtained in the esterification and the hydrogen chloride gas from dealcholization and dehydrochlorination into a washing tower circular tube falling absorption unit, and producing 31-percent hydrochloric acid.

The invention discloses a method for determining various organic phosphates in surface water by ultra performance liquid chromatography-mass spectrometry. The method includes the main steps of (1) preparing a gradient standard mixed working solution; (2) processing a sample before liquid-liquid extraction; (3) determining a standard solution and a sample solution in the ultra performance liquid chromatography-mass spectrometry; (4) obtaining a standard curve of an organophosphate monomer by standard solution test data and obtaining the content of organophosphate ester in the sample through a standard curve of sample liquid test data. The sample preprocessing is simple, the small column clogging problem is effectively solved, and the small column polarity selection range is wide. The 11 kinds of organic phosphates are qualitatively and quantitatively determined by the ultra performance liquid chromatography-mass spectrometry to achieve good separation of all the organic phosphates within 17 minutes. The target blank adding standard recovery rate is 70%-120% (except for triethyl phosphate 63%), and the test limit is 0.08-1.8ng / L.

The invention relates to a preparation method of triethyl phosphate. The method specifically comprises the following steps of: first, with ammonia gas as an acid-binding agent and methyl red as an indicator, reacting phosphorus trichloride with absolute ethyl alcohol to generate triethyl phosphite; filtering out the byproduct ammonium chloride and then, introducing a certain amount of oxygen for oxidization; and finally, distilling and purifying at reduced pressure to obtain the target product triethyl phosphate. The method provided by the invention has the advantages that the yield is high, the unit consumption is low, and the byproduct ammonium chloride can be used as a fertilizer; and the method is simple in production process, the raw materials are easily available and the production safety is high.

The invention provides an aqueous electrolyte and an aqueous metal ion battery. The aqueous electrolyte provided by the invention comprises a stabilizer, a metal salt and water, wherein the stabilizeris an oxygen-containing non-alcohol organic solvent of C3-C6; the oxygen-containing non-alcohol organic solvent of C3-C6 is selected from acetone and / or triethyl phosphate; and the metal salt is selected from one or more of lithium salt and sodium salt. The aqueous electrolyte is formed by matching the specific stabilizer with water and metal salt, so that high-potential water can be effectivelyinhibited from being oxidized into oxygen to cause an oxygen evolution side reaction, and low-potential water can be effectively inhibited from being oxidized into hydrogen to cause a hydrogen evolution side reaction, and the electrochemical stability window of the aqueous electrolyte is further improved; and the formed aqueous electrolyte has a stable electrode / electrolyte interface, high conductive effect, and relatively high capacity retention rate and coulombic efficiency.

The invention relates to a coal flotation agent and belongs to the technical field of chemical assistants. The coal flotation agent is prepared from the raw materials comprising, by mass, 60%-75% of collecting agent, 20%-40% of foaming agent and 1%-5% of complexing agent. The collecting agent is composed of, by mass, 60%-70% of triethyl phosphate, 20%-30% of diesel oil and 10%-20% of dichloromethane. The coal flotation agent is added in a one-off manner when used, the dosage of the flotation agent can be adjusted according to the composition of coal, the composition and ratio of the coal flotation agent are relatively stable for the same type of coal, the pertinence is good, the problem that by the adoption of a traditional method, the collection agent, the foaming agent and other single components are used in a classified manner is avoided, the blindness and randomness of addition and mixing are avoided, the coal flotation agent is easy to use and high in selectivity for coal, the application amount is reduced, and the coal flotation agent can be circularly used.

The invention relates to a discrimination method of Zanthoxylum dissitum Hemsl medical material, comprising establishing HPLC standard fingerprint of Zanthoxylum dissitum Hemsl medical material; measuring the fingerprint of the measured sample of the Zanthoxylum dissitum Hemsl medical material using the same method and comparing the fingerprint of the measured sample of the Zanthoxylum dissitum Hemsl medical material and the standard fingerprint of Zanthoxylum dissitum Hemsl medical material to screen the qualified Zanthoxylum dissitum Hemsl medical material in line with the standard fingerprint of Zanthoxylum dissitum Hemsl medical material. The process of establishing the HPLC standard fingerprint of Zanthoxylum dissitum Hemsl medical material comprises: preparing the sample solution and acquiring the HPLC standard fingerprint of Zanthoxylum dissitum Hemsl medical material by determing the common fingerprint features by comparing the fingerprintsof 30 batches of the Zanthoxylum dissitum Hemsl medical material at the conditions that: chromatographic column: Kromasil RP-C18 4.6mm*250mm, 5um; mobile phase: acetonitrile-0.2%triethylamine phosphate solution; using gradient elution: 0 min-10min-30min-70min; the ratio by volume of acetonitrile and 0.2%triethylamine phosphate solution is 5:95-10:90-10:90-40:60; detection wave:280nm. The invention provides a new method for quality control and discrimination of the Zanthoxylum dissitum Hemsl medical material.

The invention discloses a method for preparing hydroxyapatite / composite hole bioactive glass, relates to a method for preparing bioactive glass; and solves the problems of poor mechanical property, slow bone formation rate, complicated operation and high cost existing in the conventional composite hole bioactive glass material and the problem of low bone formation rate when coral is used as a transplanting material. The method comprises the following steps of: 1, dissolving triblock copolymer P123 in mixed solution consisting of absolute ethyl alcohol and hydrochloric acid, sequentially adding tetraethoxysilane, calcium nitrate and triethyl phosphate and stirring the mixture to obtain solution A; 2, washing the coral, immersing the washed coral in buffer solution, and washing and drying the mixture to obtain macroporous hydroxyapatite; 3, immersing the macroporous hydroxyapatite in the solution A to obtain an amorphous material; and 4, calcining the amorphous material to obtain the bioactive glass. The bone formation time of the material prepared by the method is shortened to be 12 hours; the biocompatibility and mechanical strength of the material both meet the requirements of bone repair materials; and the adopted device is simple and the raw materials have low price.