549 results about "Ethanolamines" patented technology

The invention belongs to the technical field of pyridone ethanolamine salt synthesis, and discloses an environment-friendly pyridone ethanolamine salt preparation process which comprises the following preparation steps: enabling isononanoyl chloride and 3, 3-methyl dimethacrylate to react under the catalysis of a solid acid catalyst to prepare 3, 7, 9, 9-tetramethyl-2-decene-5-keto acid methyl ester, and enabling the 3, 7, 9, 9-tetramethyl-2-decene-5-keto acid methyl ester to react under the catalysis of a solid acid catalyst to prepare 3, 7, 9, 9-tetramethyl-2-decene-5-keto acid methyl ester. The preparation method of the solid acid catalyst comprises the following steps: S1, taking water as a solvent, adding 14-16 parts by weight of zirconium oxychloride, 1-3 parts by weight of titanium sulfate, 0.1-0.5 part by weight of chloroplatinic acid and 0.05-0.4 part by weight of cerium chloride, adjusting the pH value to 10-11, and aging to obtain a precipitate; s2, roasting the precipitate obtained in the step S1 in an air atmosphere at 500-600 DEG C to obtain a solid acid catalyst; the method has the advantages that the catalyst is easy to recycle, and the reusability is high.

The invention relates to the technical field of petrochemical engineering, and particularly discloses a preparation method of a high-sulfur and high-acid crude oil demulsifier, which comprises the following steps: uniformly mixing 40-60 parts by mass of modified polyether, 25-30 parts by mass of zwitterionic surfactant and 10-12 parts by mass of solvent, heating to 50-70 DEG C, reacting for 1-2 hours, and cooling to room temperature to obtain the high-sulfur and high-acid crude oil demulsifier. Adding 3-8 parts by mass of activated aluminum oxide, 8-16 parts by mass of an antacid and 2-4 parts by mass of a corrosion inhibitor, uniformly mixing, adding 0.5-1 part by mass of a defoaming agent, uniformly mixing, cooling, and standing for layering to obtain a demulsifier; the antacid comprises ethanolamine and zinc oxide. The demulsifier prepared by the invention not only has excellent performance in the aspects of dehydration and promotion of oil-water separation, but also can improve the quality of crude oil and reduce the acid value and the sulfur content to a certain extent.

The invention relates to the technical field of biomedical treatment, and particularly discloses a biological valve treatment method and a biological valve dry piece. The bioprosthetic valve treatment method provided by the invention comprises the following steps: pretreatment, crosslinking, degreasing, anti-calcification and drying. In the anti-calcification step, an anti-calcification solution is used for treatment; the anti-calcification solution is a 0.08 to 0.12 M PBS (Phosphate Buffer Solution) containing 0.5 to 6 weight percent of ethanolamine and 0.1 to 0.5 weight percent of sodium borohydride; furthermore, the anti-calcification solution is a 0.08 to 0.12 M PBS (Phosphate Buffer Solution) containing 2 to 4 weight percent of ethanolamine and 0.2 to 0.4 weight percent of sodium borohydride; the invention further provides the bioprosthetic valve dry piece obtained through the bioprosthetic valve processing method. According to the bioprosthetic valve treatment method, the anti-calcification performance of the bioprosthetic valve can be improved, and the obtained bioprosthetic valve dry piece has good stability and storage performance.

The invention provides a carbon dioxide absorbent, an absorption method and a preparation method of the carbon dioxide absorbent, and belongs to the field of carbon capture. The carbon dioxide absorbent comprises 20% of a decarburization solvent and 80% of deionized water, and the decarburization solvent is composed of a main absorbent, an activating agent, an antioxidant and a defoaming agent; the main absorbent is 100 parts by mass, and 100 parts by mass of the main absorbent is composed of 65-85 parts by mass of ethanolamine and 15-35 parts by mass of N-methyldiethanolamine; 7 to 9 parts by mass of an activating agent and 0.4 to 0.8 part by mass of an antioxidant. The invention aims to solve the problem of poor carbon dioxide absorption effect of a carbon dioxide absorbent in the prior art. The technical effects of high carbon dioxide absorptivity, low corrosivity, weak oxidative degradability and the like are achieved.

The present invention proposes a light-absorbing film and a preparation method and application thereof, including a preparation method of a copper-vanadium-sulfur / copper-vanadium-selenium / copper-vanadium-sulfur-selenium light-absorbing film based on a solution method, and an application of the light-absorbing film prepared by the method on a solar cell. The preparation method is simple to operate and low in cost. Thioglycolic acid and ethanolamine are used as ligands, and ethylene glycol methyl ether is used as a solvent to adjust the viscosity to prepare a precursor solution; a copper-vanadium-sulfur / copper-vanadium-selenium / copper-vanadium-sulfur-selenium film is prepared by spin coating-sintering mode and adjusting the feed ratio of elements; high-temperature heat treatment is continued for sulfurization / selenization reaction to obtain a large-grain through-type copper-vanadium-sulfur / copper-vanadium-selenium / copper-vanadium-sulfur-selenium film, which can avoid the generation of impurities in the film, and the prepared light-absorbing film is applied to the light-absorbing layer of a solar cell, which is conducive to assembling a copper-vanadium-sulfur-selenium thin film solar cell with high photoelectric conversion efficiency.

The invention relates to a corrosion and scale inhibitor for TRT and a preparation method of the corrosion and scale inhibitor, and relates to the technical field of chemical reagents. The corrosion and scale inhibitor is prepared from the following components in percentage by mass: 15 to 20 percent of morpholine, 25 to 30 percent of aminoethyl ethanolamine, 15 to 20 percent of 1-hydroxyethyl-2-undecylimidazoline onium salt, 12 to 18 percent of sodium polyaspartate, 8 to 12 percent of itaconic acid-allylsulfonic acid copolymer, 1 to 3 percent of alkyl glycoside and the balance of a mixture of water and glycerol in a mass ratio of 1 to (1 to 3). The corrosion and scale inhibitor disclosed by the invention can synchronously inhibit corrosion of an acid medium and scale deposition of salts such as NH4Cl and the like, and the corrosion inhibition rate and the scale inhibition rate are effectively improved.

The invention discloses a serum-free culture medium for in-vitro proliferation of poultry muscle stem cells and application of the serum-free culture medium, and belongs to the technical field of cell engineering, a basic serum-free culture medium is DMEM-F12, a complete serum culture medium is a mixture of DMEM-F12 added with 10% of fetal calf serum and 1% of mycillin, and the volume ratio of a culture medium supplement to the basic culture medium is 1: 1000; the serum-free culture medium contains a supplement; the supplement comprises the following compositions: insulin, transferrin, fibroblast growth factor 2, epidermal growth factor, catalase, ethanolamine, vitamin B12, linoleic acid, linolenic acid, retinol acetate, tocopherol, L-alanine, L-proline, sodium selenite, sodium pyruvate, reduced glutathione, berberine hydrochloride and analogues thereof.

The invention provides a preparation method of pressureless sintered boron nitride composite ceramic, and relates to the technical field of ceramic composite material preparation. The method comprises the following steps: carrying out surface modification on boron nitride whiskers by using ethanolamine, and activating hexagonal boron nitride powder in a ball milling tank by using an alkaline solution; the preparation method comprises the following steps: uniformly mixing the boron nitride powder and the boron nitride powder in a mixing tank, carrying out cold isostatic pressing to obtain a cold-pressed green body, and carrying out high-temperature calcination on the cold-pressed green body in an inert atmosphere to finally obtain the boron nitride composite ceramic. According to the invention, the physical property characteristics of the boron nitride whisker are fully utilized, and the boron nitride whisker can be fully combined with the hexagonal boron nitride powder subjected to surface activation during calcination through further chemical surface modification, so that relatively high mechanical strength can be realized only by using one phase of boron nitride on the premise of not introducing other sintering aids; the method has the characteristics of high product purity, low production cost and high mechanical strength.

The present invention discloses a complete medium for culturing DF-1 cells, including DMEM basal medium 13.7g / L, insulin, non-essential amino acids, transferrin, glutathione, ascorbyl phosphate, sodium selenite, ethanolamine, hydrocortisone, and newborn calf serum. Wherein non-essential amino acids include glycine, alanine, proline, serine, and asparagine. A complete medium for culturing DF-1 cells provided by the present invention can well promote the proliferation of DF-1 cells, can achieve the same proliferation effect as high-concentration fetal bovine serum, and is suitable for the adherent culture of DF-1 cells; using low-concentration newborn calf serum, it is possible to greatly avoid the batch differences, unstable culture results, cytotoxicity, and high risk of carrying pathogens brought by the culture medium with high-concentration serum, narrow application range, expensive fetal bovine serum, and high culture cost; the components are simple, the culture medium preparation process is short in time consumption, the culture efficiency is high, the repeatability is good, and it is suitable for batch production.

The invention relates to the technical field of polyurethane adhesives, in particular to the field of IPC C09J175, and more particularly relates to a small molecule chain extender, a preparation method thereof and red polyurethane adhesive. The small molecule chain extender is prepared from the following raw materials: dichloroanthraquinone and ethanolamine, and the red polyurethane adhesive is prepared from the small molecule chain extender, polyol, isocyanate and a solvent. A red colored group is introduced into a polyurethane molecular chain, and the colored group is used as a part of a chain extender, so that the color migration resistance and the transparency are improved at the same time.

The metabolic marker can be used for early diagnosis of heart failure, has the advantages of high sensitivity, rapidness, convenience and accurate and reliable result, provides a basis for clinical decision, provides a certain basis for subsequent fundamental research and clinical research, and has potential application and research values. The metabolic marker comprises one or more of 1-(4-nitrophenyl) piperidine, sphingolipid d19: 3 / 23: 0, phosphatidyl ethanolamine 16: 1e / 22: 5, phosphatidyl ethanolamine 16: 1e / 22: 6, sphingolipid d14: 0 / 22: 1, 3-phosphoglyceric acid, phosphatidylcholine 15: 0 / 20: 4, phosphatidylcholine o-16: 1 / 18: 0, phosphatidylcholine 14: 0e / 20: 1, phosphatidylcholine 17: 0 / 18: 5, betaine, phosphatidylcholine 15: 0 / 18: 2 and phosphatidylcholine 18: 5e / 20: 4.

The invention discloses a lipid composition for preparing extracellular vesicles, which is prepared from the following lipid substances in percentage by mass: 2 to 18 percent of phosphatidylcholine, 2 to 14 percent of phosphatidylethanolamine, 7 to 27 percent of sphingomyelin, 0.5 to 7 percent of ceramide, 1.5 to 2.5 percent of phosphatidylinositol, 30 to 70 percent of cholesterol and 5 to 8 percent of phosphatidylserine, the fatty acid carbon number of the lipid substance satisfies the following conditions: the fatty acid carbon number of phosphatidylcholine is 16-20, the fatty acid carbon number of phosphatidyl ethanolamine is 16-18, the fatty acid carbon number of sphingomyelin is 16-24, the fatty acid carbon number of ceramide is 16-24, the fatty acid carbon number of phosphatidylinositol is 16-20, the fatty acid carbon number of phosphatidylserine is 18-24, and the molar ratio of cholesterol to sphingomyelin is 4-7. The extracellular vesicles are prepared from the lipid composition and used for biomarkers or drug carriers, and efficient oral drug delivery is achieved.

The invention relates to a preparation method of an in-situ growth neutral gel electrolyte membrane regulated and controlled by ethanolamine and application of the neutral gel electrolyte membrane in negative electrode protection of an aqueous zinc ion battery. The gel is promoted to form a film on the surface of a zinc plate by utilizing the crosslinking effect of ethanolamine, acrylamide and 2-acrylamide-2-methylpropanesulfonic acid and the strong bonding effect of ethanolamine and the zinc plate. The membrane can improve the problems of low ion transfer rate, high free water molecule content and high activity of the traditional gel electrolyte, effectively inhibit the generation of hydrogen evolution reaction, and improve the ion transfer number, thereby improving the stability of the negative electrode and the intestinal circulation performance of the battery. The method is simple and safe to operate and shows excellent electrochemical performance, and the invention provides the method for protecting the negative electrode of the aqueous zinc ion battery.

The invention discloses a flame-retardant B1-grade sheath material and application thereof in cables, and relates to the technical field of high polymer materials. Comprising the following raw materials in parts by weight: 40-50 parts of an ethylene-vinyl acetate copolymer, 10-20 parts of an ethylene-vinyl alcohol copolymer, 10-20 parts of a functional hyperbranched polymer, 30-40 parts of a metal organic framework modified composite flame retardant, 3-5 parts of a compatilizer, 0.8-1.2 parts of an antioxidant and 0.4-0.6 part of a lubricant. The functional hyperbranched polymer comprises structural units introduced by the following monomers: triphenyl isocyanate thiophosphate and N-[(4-methyl-1H-benzotriazole-1-yl) methyl] diethanol amine. The material is high in tensile strength, sufficient in thermal shock resistance and excellent in aging resistance and flame retardance.

The invention discloses a preparation method and application of a water-based mixed binder, and relates to the technical field of water-based binders. The water-based mixed binder is obtained by mixing and compounding a water-based polyurethane emulsion and polyvinylidene fluoride. Wherein in the preparation process of the waterborne polyurethane emulsion, amino-terminated polyacrylic acid-catechol is added to serve as a chain extender for use, the amino-terminated polyacrylic acid-catechol is prepared by initiating polymerization of 4-allyl catechol, alkenyl siloxane and an acrylic monomer, and after polyacrylic acid-catechol is prepared, the amino-terminated polyacrylic acid-catechol is added to serve as a chain extender for use; and carrying out an ultraviolet irradiation click reaction on the obtained product and mercaptoacetic acid ethanolamine ester. The waterborne polyurethane emulsion prepared by the invention can greatly improve the electrochemical performance of the lithium battery, and especially has a great improvement effect on the peel strength, the cycle discharge specific capacity and the coulombic efficiency of the lithium battery.

The invention discloses an emulsifier for preparing a Pickering emulsion, the Pickering emulsion as well as a preparation method and application of the Pickering emulsion. The emulsifier of the Pickering emulsion is obtained by dissolving distearoyl phosphatidylcholine, cholesterol and distearoyl phosphatidyl ethanolamine-polyethylene glycol 2000 in ethanol, carrying out rotary evaporation to remove ethanol, then adding an antigen aqueous solution containing an antigen, continuing rotary evaporation to obtain liposome nanoparticles, heating the liposome nanoparticles with mannose in a water bath, and carrying out freeze drying. The Pickering emulsion is obtained by dispersing an emulsifier in water as a water phase, taking squalene as an oil phase, mixing the water phase and the oil phase, and homogenizing. The Pickering emulsion disclosed by the invention is prepared by taking antigen presenting cell targeted liposome nanoparticles as a raw material; and the antigen has excellent ion concentration characteristic, pH stability, temperature stability and storage stability, and can protect the integrity of the antigen.

The invention discloses composite resin for removing metal ions as well as a preparation method and application of the composite resin, and belongs to the technical field of resin materials. In order to solve the problem that the traditional cation exchange resin has poor removal rate on heavy metals in a solution containing alkali metals and heavy metals at the same time, the invention provides the composite resin with a weak acid cation functional group and a nitrogen-containing chelating functional group at the same time. The composite resin contains a nitrogen-oxygen-containing chelating functional group and a weakly acidic cation functional group, the nitrogen-oxygen-containing chelating functional group can selectively remove heavy metal ions such as chromium, and the weakly acidic cation functional group can effectively remove alkali metal ions such as calcium. Therefore, the composite resin has the advantages of cation exchange resin and chelating resin, heavy metal ions and alkali metal ions in an ethanolamine stock solution can be effectively removed, and the concentration of the metal ions in the ethanolamine solution treated by the composite resin is lower than 30 ppb.

The invention discloses dipeptide hydrogel and application thereof as a cell culture medium, and belongs to the field of material science. According to the invention, the dipeptide hydrogel is designed and assembled, and the dipeptide hydrogel is prepared by the following steps: carrying out self-assembly on phenylalanine dipeptide modified by 9-fluorenyl methoxy carbonyl protecting group (Fmoc), and then adding tetracarboxyl phenyl porphyrin (TCPP) and distearoyl phosphatidyl ethanolamine (DSPE) for co-assembly. When the dipeptide hydrogel prepared by the invention is applied as a cell culture medium, the proliferation activity of cultured cells can be improved, so that the growth speed and density of the cells are improved, and the dipeptide hydrogel has good biological safety. The possibility is provided for promoting the high-level development of the cell culture field.

The invention belongs to the technical field of pharmaceutical preparations. The invention discloses a nano preparation for inhibiting tumor metastasis, a preparation method and application. The nano preparation for inhibiting tumor metastasis comprises liposome spheres and nano spheres. The liposome sphere provided by the invention comprises an inner-layer core structure and a shell wrapping the outer layer of the inner-layer core structure, wherein the inner-layer core structure comprises lecithin, dioleoyl phosphatidyl ethanolamine, cholesterol succinic acid monoester, cholesterol, imidazolyl-cholesterol and DSPE-PEG2000-CS; the core structure of the inner layer is loaded with aspirin and DNaseI; the housing includes platelets. The nano preparation for inhibiting tumor metastasis can dissolve NET, inhibit the platelet function and disintegrate tumor cell-platelet-NET aggregate, and the nanosphere for inhibiting the far-end metastasis of tumors can deeply permeate into the tumors to play a role in killing the tumors.

The invention discloses a synthesis method of tripeptide Fmoc-Pro-Pro-Pro-OH, belongs to the technical field of polypeptide synthesis, and particularly relates to Fmoc-Pro-Pro-Pro-OH prepared by a condensation deprotection reaction of a proline reagent and a proline derivative, the proline reagent comprises Fmoc-Pro-OH or Fmoc-Pro-Pro-OH, and the proline derivative is H-Pro-OtBu. An activating reagent is used in the condensation deprotection reaction, and the mass ratio of the usage amount of the Fmoc-Pro-OH to the usage amount of the activating reagent is 1: (0.1-0.9). Alkali is used in the condensation deprotection reaction, the alkali comprises an alcohol amine compound, the alcohol amine compound is prepared through the reaction of ethanolamine and ethyl 3-bromopyruvate, and the synthesis method of the tripeptide Fmoc-Pro-Pro-Pro-OH is high in yield and purity.

The invention relates to the technical field of lubricants, in particular to rolling oil for aluminum material hot rolling and a preparation method of the rolling oil, the rolling oil comprises 75 wt%-80 wt% of base oil, 15 wt%-20 wt% of unsaturated fatty acid, 2 wt%-3 wt% of ethanolamine compounds, 0.5 wt%-1 wt% of antioxidants, 0.5 wt%-1 wt% of boric acid, 0 wt%-0.5 wt% of defoaming agents and the balance inevitable impurities; according to the preparation method of the rolling oil, the raw materials react in the preparation process to synthesize effective components with the functions of an emulsifier, an extreme pressure anti-wear agent and the like, so that the effect of combining multiple raw materials can be achieved without special multiple kinds of raw materials, the lubricating and annealing detergency is good, the boric acid can inhibit dissolution of ethanolamine, and the service life of the rolling oil is prolonged. The service life of the rolling oil is prolonged.

The invention discloses a preparation method of antibacterial modified polylactic acid for a packaging material, and belongs to the technical field of functional modification of polylactic acid.The preparation method comprises the steps that an antibacterial barrier type polylactic acid composite material is prepared through ring opening polymerization of an initiator, grafting of antibacterial molecules and blending of montmorillonite, a chlorine-terminated initiator is generated from ethanolamine and chloroacetyl chloride, and the antibacterial modified polylactic acid is prepared; the preparation method comprises the following steps: initiating ring-opening polymerization of L-lactide to form polylactic acid with terminal group activity, covalently grafting terminal group chlorine with an antibacterial modifier through nucleophilic substitution, endowing the polylactic acid with antibacterial property, coupling modified montmorillonite with silane through organic intercalation, and then carrying out melt blending with the modified polylactic acid with antibacterial property to form a layered barrier structure and enhance interface bonding. Therefore, the film has the advantages of high barrier property, high tensile strength, excellent antibacterial activity and good degradability.

The invention relates to the technical field of chemiluminescence immunoassay, in particular to a preparation method and application for solving low coating amount aggregation of carboxyl magnetic beads. Activating agents EDC and NHS are added into a first magnetic bead resuspension; cleaning the activated first magnetic bead resuspension with a coupling buffer solution to obtain a second magnetic bead resuspension with the concentration of 5-20 mg / mL; adding activators EDC and NHS and an antibody into the second magnetic bead resuspension; a first sealing agent with the pH being 6-8 and containing 50-400 mmol / L of ethanolamine is added into the second magnetic bead resuspension for primary sealing; removing the supernatant of the second magnetic bead resuspension after primary sealing, and adding a second sealing agent for secondary sealing; and washing the second magnetic bead resuspension after secondary sealing by using a magnetic bead working solution, and fixing the concentration of carboxyl magnetic beads to 0.4 mg / mL. The carboxyl magnetic bead coating process is optimized, the magnetic bead activity is improved, and the test background signal value is reduced.

The invention relates to a method for using a choline eutectic solvent as a carbon dioxide absorbent. A choline eutectic solvent is used in the method. Wherein the choline eutectic solvent is prepared by mixing choline chloride (ChCl) and ethanolamine (MEA) according to a molar ratio of 1: 5. Placing the round-bottom flask filled with ChCl and MEA in a constant-temperature magnetic stirring oil bath pan, and heating and stirring for more than 3 hours at the temperature of 100 DEG C; and after a uniform and transparent solution is formed in the flask, taking out the solution from the oil bath pan, and standing to room temperature. Transferring into a reagent bottle, and pasting a label for later use. The choline deep-eutectic solvent is simple in preparation method and low in toxicity, and is an efficient carbon dioxide absorbent.

The invention discloses a negative ion metabolism marker for thyroid-associated ophthalmopathy, a product and application of the negative ion metabolism marker. The metabolic marker is prepared from any one or more of 7alpha, 17alpha-dimethyl-5beta-androstane-3 alpha, 17beta-diol, N, N-dimethyl phosphatidyl ethanolamine, 15 (S)-hydroxy eicosatrienoic acid and 1-myristoyl-2-[(9Z)-octadecenoyl]-sn-glycerol-3-phosphatidylcholine, and the metabolic marker is prepared from any one or more of the following raw materials: 1-myristoyl-2-[(9Z)-octadecenoyl]-sn-glycerol-3-phosphatidylcholine. The invention provides a kit which comprises a detection reagent for detecting the negative ion metabolism marker. The invention provides a computer program product for thyroid-related eye diseases. The product provided by the invention has good feasibility and accuracy, can effectively evaluate the risk of thyroid-related eye diseases, and provides a new tool for clinical diagnosis.

The invention belongs to the technical field of medicines, and particularly relates to a gynecological postoperative wound nursing dressing and a preparation method thereof. The wound surface nursing dressing after the gynecologic operation is prepared from the following components in percentage by mass: 0.002 to 0.004 percent of stem cell factor freeze-dried powder, 0.005 to 0.01 percent of phosphoethanolamine, 0.05 to 0.1 percent of cecropin antibacterial peptide, 0.03 to 0.08 percent of aralia elata acid, 2 to 6 percent of carboxymethyl chitosan, 0.1 to 0.5 percent of polyethylene glycol, 0.5 to 1.5 percent of glycerol and the balance of water. The wound dressing not only can inhibit the growth of harmful bacteria, but also does not influence the growth of beneficial bacteria such as lactobacillus, is beneficial to the stabilization and regulation of genital tract micro-ecology, creates a healthier and more stable environment for wound healing, plays a role in the wound repairing process, accelerates wound healing and shortens the treatment time.

The invention discloses a method for preparing a low-carbon waste incineration fly ash (MSWIFA) cement-based material through carbonization of a modified nano solution and application of the MSWIFA cement-based material, according to the method, nano silicon dioxide is dispersed in a VTES (vinyltriethoxysilane) ethanol solution to serve as a medium for carbonization modification of the MSWIFA, and meanwhile the carbonization degree of the MSWIFA is improved through an ethanolamine solution. The carbonized and modified MSWIFA is used as a supplementary cementing material to be doped into the cement-based material, so that the compressive strength of the cement-based material can be improved, and heavy metal ions in the MSWIFA can be consolidated. Most importantly, the carbonization method provided by the invention is superior to the traditional carbonization method, the steps of suction filtration, drying and the like are not needed in the carbonization modification process, fine-particle micro powder is reserved, the energy consumption in the carbonization process is reduced, the time is saved, and the carbonization efficiency is improved. The building material produced by using the modified MSWIFA reduces environmental pollution, has good thermal insulation characteristics, and achieves the goals of environmental protection, energy conservation and emission reduction.

The invention provides a special extracting agent for preparing monopotassium phosphate by a solvent extraction method, the extracting agent is composed of a main agent and an auxiliary agent, the main agent is N, N-diisooctyl ethanolamine and trioctyl methyl ammonium chloride, the auxiliary agent is xylene and C8-C16 alkane, the C8-C16 alkane is at least one of C8-C16 alkanes, and the volume ratio of the main agent to the auxiliary agent is (0.2-0.6): 1. The special extraction agent provided by the invention can improve the separation selectivity of hydrochloric acid and phosphoric acid while enhancing the extraction performance of hydrochloric acid, improves the separation performance of oil and water phases after extraction, avoids entrainment and shortens the phase separation time.

The invention provides a metabolic marker for auxiliary diagnosis of schizophrenia, a construction method and application. Wherein the metabolic marker comprises lysophosphatidylcholine (LPC) (17: 0 / 0: 0), oleamide, lysophosphatidyl ethanolamine LysoPE (18: 0 / 0: 0), palmitamide, lysophosphatidyl ethanolamine LysoPE (0: 0 / 20: 4), lysophosphatidyl ethanolamine LysoPE (22: 6 / 0: 0), p-methylphenol sulfate, lactic acid, 3-hydroxybutyric acid, lysophosphatidyl ethanolamine LysoPE (18: 2 / 0: 0), lysophosphatidyl ethanolamine LysoPE (16: 0 / 0: 0) and sphingosine 1-phosphate. By utilizing the metabolic marker, auxiliary diagnosis of schizophrenia can be rapidly and accurately completed in the early stage of disease attack.

The present invention discloses a bio-based benzoxazine monomer-modified epoxy resin and a preparation method thereof. The method comprises: reacting guaiacol, ethanolamine, and paraformaldehyde to obtain a bio-based benzoxazine monomer; reacting the bio-based benzoxazine monomer with phosphorus oxychloride in a solvent to obtain a benzoxazine phosphate monomer; and uniformly mixing the benzoxazine phosphate as a modifying curing agent, a bio-based diamine Priamine 1074 as a toughening curing agent, and a bisphenol A-type epoxy resin (DGEBA). The mixture is poured into a mold, and then heated and cured to obtain the bio-based benzoxazine monomer-modified epoxy resin. The bio-based benzoxazine monomer-modified epoxy resin obtained by the present invention has strong mechanical properties and thermal stability, as well as excellent adhesion, flame retardancy, low dielectric properties, and biodegradability.