3030 results about "Esterification reaction" patented technology

A boron-containing polyethylene glycol fatty acid ester surfactant belongs to the field of organic chemistry and functional materials. The boron-containing polyethylene glycol fatty acid ester surfactant is prepared as follows: polyethylene glycol (PEG), boric acid and fatty acid are used as raw materials, first esterification reaction of the PEG and the boric acid is performed, then esterification reaction of the PEG and the fatty acid is performed to obtain boron-containing poly ethylene glycol fatty acid ester; by changing the species of fatty acids and catalysts and molecular weight of the PEG, the esterification rate can be enhanced, the boron-containing poly ethylene glycol fatty acid ester product can be used as a surfactant, and the boron-containing poly ethylene glycol fatty acid ester can reduce water surface tension and has good emulsifying properties.

The present invention relates to the field of food technology, and in particular to a method for preparing diglyceride and its application. The method comprises the following steps: firstly hydrolyzing the oil and fat under the action of a first lipase, adding a solubilizing agent, and obtaining a hydrolyzate; then mixing the hydrolyzate with glycerol, and performing an esterification reaction with a second lipase; wherein the first lipase is prepared by compounding lipase Lipozyme RM and Antarctic Candida lipase B. The present invention can specifically synthesize 1,3-diglyceride that is beneficial to the cardiovascular system of the body, and has a high yield and good application prospects.

The invention belongs to antibacterial materials, and particularly relates to antibacterial modified waterborne polyurethane and a preparation method and application thereof.The preparation method of the antibacterial modified waterborne polyurethane comprises the following steps that polyol and diisocyanate are mixed and subjected to a prepolymerization reaction, and a polyurethane prepolymer is obtained; mixing the polyurethane prepolymer and a chain extender, and carrying out chain extension reaction; in the chain extension reaction, adding the graft and carrying out esterification reaction to obtain a first intermediate; mixing the first intermediate with triethylamine and carrying out neutralization reaction to obtain a second intermediate; and emulsifying the second intermediate in deionized water to obtain the antibacterial modified waterborne polyurethane. Compared with the prior art, the antibacterial waterborne polyurethane has the advantages that the problems of poor intermiscibility, low durability and the like in physical addition and the problems of limited binding objects and weak antibacterial effect in covalent binding in the antibacterial waterborne polyurethane in the prior art are solved. According to the scheme, arginine and chitosan are grafted to a molecular chain of waterborne polyurethane, so that the waterborne polyurethane is endowed with a synergistic antibacterial property.

The invention discloses a preparation method of an ester polycarboxylic acid water reducer, and belongs to the technical field of concrete admixtures. The preparation method of the ester polycarboxylic acid water reducing agent comprises the following steps: under an alkaline condition, carrying out free radical polymerization reaction on a polyether macromonomer and an unsaturated carboxylic acid monomer under the action of a chain transfer agent A, a chain transfer agent B and an initiator, continuously adding a catalyst, and carrying out dehydration esterification reaction under the action of the catalyst, so as to prepare the ester polycarboxylic acid water reducing agent, the polyether macromonomer is monohydroxy polyether of which the molecular weight is between 500 and 5000; the chain transfer agent A is one of acetone, isopropanol, sodium hydrogen sulfite, sodium hypophosphite, sodium formate and the like; the chain transfer agent B is one of mercaptoethanol, mercaptopropanol, mercaptoacetic acid, mercaptopropionic acid and the like; the catalyst is a phosphonic acid compound with hydroxyl or amino. The preparation method is simple in process and low in energy consumption, and the prepared ester polycarboxylic acid water reducer product is excellent in performance.

The invention provides a polyester polyol production method, a polyester polyol production device and application, according to the polyester polyol production method, single-stage gas-liquid separation in the prior art is improved, and at least two-stage series gas-liquid separation is carried out in the esterification reaction process, so that the total production time is shortened, the production efficiency is improved, and the production cost is reduced. By-products such as polyether can be effectively removed, and the product quality stability of the polyester polyol can be effectively improved.

The invention belongs to the technical field of thin film capacitors, and particularly relates to a chemical grafting modified polypropylene capacitor film material and a preparation method and application thereof. According to the preparation method of the chemical grafting modified polypropylene capacitor film material, provided by the invention, diethylenetriamine ethyl acrylate with a plurality of specific groups such as amino groups and carboxyl groups and unsaturated double bonds is synthesized through esterification reaction, and the diethylenetriamine ethyl acrylate is introduced into a polypropylene material through chemical grafting to obtain chemical grafting modified polypropylene; the prepared polypropylene capacitor film material has the excellent properties of good compatibility, difficulty in film breakage, capability of adsorbing and removing residual moisture, difficulty in oxidation corrosion, excellent breakdown resistance and the like, and the preparation method is a preparation method of the high-performance polypropylene capacitor film material; therefore, the technical problem that a polypropylene capacitor film material prepared in the prior art is low in performance is solved.

The invention discloses a nano material modified alcohol amine grinding aid as well as a preparation method and application thereof, and the preparation method comprises the following steps: firstly, carrying out esterification reaction on alcohol amine and an acid small monomer containing double bonds to generate an esterification product; then, carrying out bulk polymerization on the esterification product and a silane coupling agent KH-570; and finally, combining the bulk polymerization product with the nano-material through a dehydration reaction of a silane coupling agent and hydroxyl on the surface of the nano-material to form the nano-material modified alcohol amine grinding aid. According to the invention, the nano material is directly grafted into the alcohol amine, so that the dispersity of the nano material in the cement grinding process can be effectively optimized, the friction force and energy consumption among cement particles can be reduced, the efficiency and stability of the cement production process can be improved, and the strength and durability of the cement product are improved.

The invention discloses a synthesis method of a non-silicon defoaming agent and application of the non-silicon defoaming agent in the field of scandium extraction in hydrometallurgy. The defoaming agent is synthesized by a component A, a component B and a component C through a two-step reaction, the synthesis method comprises the following specific synthesis steps: 1) carrying out esterification reaction on an amino acid substance A and a fatty alcohol substance B to generate an amino ester substance D; and 2) carrying out substitution reaction on the amino ester substance D and a triazine compound C to obtain the non-silicon defoaming agent. The defoaming agent disclosed by the invention is wide in application range, can be applied to links such as a laterite-nickel ore hydrometallurgy front-end scandium extraction method and an MHP hydrometallurgy scandium impurity removal process, is added as an auxiliary agent in the extraction process, and is used for reducing the surface tension of liquid, preventing the formation and enrichment of a third-phase substance and reducing the occurrence of an emulsification phenomenon; the process stability and the output quality are improved, and the method has important industrial application value.

The present application relates to the technical field of aluminum electrolytic capacitors, and specifically discloses a low-temperature, medium- and high-voltage aluminum electrolytic capacitor. Among them, the electrolyte of the low-temperature, medium- and high-voltage aluminum electrolytic capacitor includes the following raw materials: a main solvent, a low-melting point co-solvent, a main solute, an auxiliary solute, a flash voltage enhancer, a hydrogen remover, and a waterproofing auxiliary agent. Among them, the flash voltage enhancer is modified nano-silica. The present invention uses a vinyl silane coupling agent to modify the surface of nano-silica, and then esterifies polyvinyl alcohol and allyl succinic anhydride to form allyl succinic anhydride-grafted polyvinyl alcohol, and effectively combines it with silanized nano-silica, so that the nano-silica particles can be evenly dispersed in the electrolyte to increase the flash voltage of the electrolyte, and by introducing a low-melting point co-solvent, the melting point of the electrolyte system can be effectively reduced, so that the capacitor can maintain low viscosity and good electrical properties in a low-temperature environment.

The invention relates to the technical field of electronic materials, in particular to a preparation method of low-halogen alkali-soluble photosensitive resin and solder resist ink. Comprising the following steps: adding amino resin, alcohol olefin and a catalyst A into a solvent, mixing, and carrying out an ether exchange reaction to obtain an initial etherified product; adding peroxide into the initial etherification product, and carrying out epoxidation reaction to obtain an epoxy resin intermediate; adding an olefine acid compound, a catalyst B and a polymerization inhibitor into the epoxy resin intermediate, and carrying out ring-opening esterification reaction to obtain an epoxy acrylate intermediate; and adding acid anhydride into the epoxy acrylate intermediate, and carrying out carboxylation reaction to obtain the low-halogen alkali-soluble photosensitive resin. The problem of high halogen content of the existing alkali-soluble photosensitive resin is solved, and the solder resist ink prepared from the alkali-soluble photosensitive resin has high sensitivity, high resolution, high heat resistance, high acid and alkali resistance and high electrical insulation property.

The invention discloses a hyperbranched water reducing agent for high-tensile wet joint UHPC (Ultra High Performance Concrete) as well as a preparation method and application of the hyperbranched water reducing agent, and belongs to the technical field of concrete admixtures. The preparation method comprises the following steps: mixing pentaerythritol and maleic anhydride, adding a catalyst p-toluenesulfonic acid, and carrying out an esterification reaction to prepare an esterification product; carrying out amidation reaction on the esterification product, diethanol amine and a catalyst sodium ethoxide to obtain a prepolymer; acrylic acid, maleic anhydride and the prepolymer are dissolved in deionized water, an initiator ammonium persulfate is added for a free radical copolymerization reaction, and a main chain polymer is obtained; carrying out phosphorylation reaction on the main chain polymer and phosphorus pentoxide to obtain a phosphorylated main chain polymer; the phosphorylated main chain polymer, methoxypolyethylene glycol and a catalyst p-toluenesulfonic acid are subjected to an etherification reaction, a hyperbranched comb-shaped polymer water reducing agent solution is obtained and then subjected to aftertreatment, and the water reducing agent is prepared. According to the hyperbranched comb-shaped polymer water reducing agent prepared by the preparation method disclosed by the invention, the problems of poor flowability and high viscosity of ultra-high performance concrete (UHPC) are solved by combining a linear side chain of a comb-shaped structure and a three-dimensional branch of hyperbranched topology.

The invention discloses multifunctional acetylene carbon black as well as a preparation method and application thereof. The preparation method comprises the following steps: blending triethylenetetramine hexaacetic acid and acetylene carbon black in a mass ratio of (0.05-0.5): 100, and then carrying out esterification reaction under a vacuum condition, thereby obtaining the multifunctional acetylene carbon black. The preparation method comprises the following steps: modifying acetylene carbon black by adopting triethylenetetramine hexaacetic acid, and carrying out esterification reaction on triethylenetetramine hexaacetic acid with six carboxyl functional groups and acetylene carbon black with a hydroxyl functional group, so that the acetylene carbon black is modified, and the acetylene carbon black becomes multifunctional acetylene carbon black. The acetylene carbon black modified with a large number of carboxyl groups and amide groups on the semiconductive wrapping tape form rich hydrogen bonds, so that the compatibility of the acetylene carbon black and the semiconductive wrapping tape is improved.

The invention discloses bio-based polyurethane as well as a preparation method and application thereof, and belongs to the technical field of polyurethane. The bio-based polyurethane is prepared from bio-based silicon-based polyester polyol, diisocyanate and a bio-based chain extender, wherein the molar ratio of the bio-based silicon-based polyester polyol to the diisocyanate to the bio-based chain extender is 1.0: (3.0-5.0): (2.0-4.0); wherein the bio-based silicon-based polyester polyol is prepared by taking bio-based dibasic acid and single-ended dihydroxy siloxane as raw materials, and carrying out esterification reaction on the bio-based dibasic acid and the single-ended dihydroxy siloxane. In the bio-based polyurethane, siloxane antifouling groups are suspended on side chains of polyurethane macromolecules, so that the bio-based polyurethane is endowed with excellent antifouling and hydrophobic properties; the mechanical property of polyurethane is good, the compatibility of siloxane and polyurethane is improved, and the polyurethane slurry has good pigment dispersion stability. In general, the comprehensive performance of the bio-based polyurethane is excellent, and the bio-based polyurethane has important economic and application significance for obtaining high-quality polyurethane products.

The invention belongs to the technical field of polyurethane, and particularly relates to a low-swelling-rate hydrophilic polyurethane sponge composite material as well as a preparation method and application thereof. The low-swelling-rate hydrophilic polyurethane sponge composite material is prepared from a component A and a component B according to the mass ratio of 100: (50-55), and the component A comprises the following raw materials: a foaming agent, wollastonite powder, an antibacterial agent, emulsifying wax and a polyether type cross-linking agent; the component B comprises polyether ester polyol and toluene diisocynate; the polyether type cross-linking agent is prepared by taking triethanolamine as an initiator and carrying out ring-opening polymerization reaction with EO; the polyether ester polyol is prepared by taking polyethylene glycol, diethylene glycol, trimethylolpropane and adipic acid as raw materials through esterification reaction. The hydrophilic polyurethane sponge prepared from the composite material is good in hydrophilicity, high in aperture ratio, fine and smooth in foam hole, low in swelling ratio and excellent in mechanical property.

The preparation method comprises the following steps: 1, completing an esterification reaction of terephthalic acid and ethylene glycol in an esterification reaction kettle according to a semi-continuous polyester synthesis process, and ensuring that the esterification rate is not lower than 96% by controlling the water yield; 2, introducing the fully esterified intermediate high-temperature solution into a secondary esterification kettle, uniformly adding quantitative self-prepared spherical coated silicon dioxide additive suspension, controlling the temperature, and continuously stirring and dispersing for not less than 30 minutes; and 3, heating the uniform slurry in the secondary esterification reaction kettle to a certain temperature, introducing the slurry into a polycondensation reaction kettle after passing through a melt filter of 15-25 microns, completing a polymerization reaction in the polycondensation reaction kettle by controlling parameters such as temperature, pressure and stirring rate, and synthesizing a polyester chip melt capable of producing the low-scratch release protective film, and pelletizing the polyester chips by using an underwater pelletizing system, drying and sub-packaging to obtain the target modified polyester chips.

The invention relates to a preparation method of a terephthalic acid and 2-methylimidazole organic framework catalyst, and relates to a preparation method of a high polymer material catalyst, the preparation method comprises the following steps: weighing C6H4 (COOH) 2 and 2-methylimidazole, dissolving C6H4 (COOH) 2 and C4H6N2 in N, N-dimethylformamide (DMF), weighing zinc nitrate hexahydrate (Zn (NO3) 2.6 H2O), dissolving in DMF, and preparing into a solution; the preparation method comprises the following steps: mixing a C6H4 (COOH) 2 solution and a C4H6N2 solution in proportion, and uniformly stirring; slowly adding the mixed ligand solution into a mixed solution of zinc nitrate hexahydrate (Zn (NO). 6HO) dissolved in DMF (Dimethyl Formamide), and transferring into a high-pressure reaction kettle for reaction; after cooling, centrifugally separating to obtain a white solid product, washing with methanol, and drying to obtain the Zn-MOF catalyst. The Zn-MOF catalyst provided by the invention can be widely applied to polyester synthesis, esterification reaction and other organic catalytic reactions, and especially has significant advantages in PBAT synthesis.

The invention discloses an optical-grade PET release film and a preparation method and application thereof, and belongs to the technical field of PET release liners.The preparation method comprises the steps that organic silicon resin, polyacrylate and functional silicone oil serve as raw materials, hexadecafluorophthalocyanine copper serves as a catalyst, sodium hydroxide provides hydroxyl anions, and hydroxyl-containing fluorinated hydroxyaniline is obtained; amino groups on the surface of fluorinated hydroxyaniline react with carboxyl groups of graphene oxide and are grafted on the surface of graphene oxide, then hydroxyl groups in the fluorinated hydroxyaniline and carboxyl groups of acrylic acid are subjected to esterification reaction under the action of a catalyst, so that acrylic acid is grafted on fluorinated modified graphene oxide, and the fluorinated modified graphene oxide is obtained. Therefore, hydroxyl and epoxy functional groups on the surface of the graphene oxide are consumed, hindering of electron transmission is reduced, the conductivity of the release film is improved, and the antistatic requirement of the release film is met.

The invention relates to the technical field of degradable PE (polyethylene) packaging materials, and discloses a PE film, a preparation process and application in tissue packaging, and the PE film is prepared by the following steps: by taking 7-(diethylamino) coumarin-3-carboxylic acid, 2-naphthyl methanol and epoxy chloropropane as raw materials, carrying out esterification reaction and quaternization reaction to prepare an epoxidized biodegradable organic photosensitizer; based on an epoxy-hydroxyl ring-opening reaction mechanism, hydroxylated titanium dioxide nanoparticles and polyvinyl alcohol resin are respectively modified by using an epoxidized biodegradable organic photosensitizer, and compounding is performed based on a pi-pi accumulation effect between aromatic rings to prepare the ultraviolet light dependent photo-biodegradable component. According to the present invention, the ultraviolet light dependent light-biological degradation component, the compatible component and the composite auxiliary agent are added to the polyethylene matrix, and blow molding is performed to obtain the PE film, and the film product shows excellent light-biological dual degradation performance, has actual use value, and can be used in the tissue packaging field.

The invention provides a synthetic method of methyl p-tert-butylbenzoate, and belongs to the technical field of chemical synthesis, the synthetic method comprises the following steps: mixing sulfonic acid resin in a molten state with calcium salt of nano powder, then rapidly solidifying to prepare mixed particles, and then sequentially carrying out pickling activation, cleaning and drying to prepare a modified sulfonic acid resin catalyst; the calcium salt is at least one of calcium sulfate and calcium silicate; the method comprises the following steps: adding p-tert-butylbenzoic acid and absolute methanol into reaction equipment, carrying out a step-by-step esterification reaction of heating and cooling at 90-150 DEG C under the catalysis of a modified sulfonic acid resin catalyst, and carrying out post-treatment after the reaction is finished, so as to obtain methyl p-tert-butylbenzoate, wherein the molar ratio of p-tert-butylbenzoic acid to absolute methanol is (1: 3)-(1: 5). According to the method, the modified sulfonic acid resin is used as the catalyst, and the stepped esterification reaction of heating and cooling is combined, so that the methyl p-tert-butylbenzoate with the purity being greater than or equal to 99.99% is prepared, and the conversion rate of p-tert-butylbenzoic acid exceeds 99%.

The production equipment comprises a slurry tank, an esterification reactor, a multi-stage polycondensation tower and an esterification separation tower which are sequentially connected, the esterification separation tower is further circularly connected with the esterification reactor, the slurry tank is used for feeding alcohol and acid, the esterification reactor is used for carrying out esterification reaction, and the multi-stage polycondensation tower is connected with the esterification separation tower. The multi-stage polycondensation tower comprises multi-stage tower sections, the pressure of the multi-stage tower sections is gradually reduced from the feeding end to the discharging end, the multi-stage polycondensation tower is used for carrying out polycondensation reaction on esterification materials from the esterification reactor, polycondensation products generated by the multi-stage polycondensation tower are discharged, and the esterification separation tower is used for separating water, alcohol and small molecular substances in polycondensation condensate; and alcohol separated by the esterification separation tower flows back to the esterification reactor. The device can be used for continuous production of low-molecular-weight polyester, and can reduce equipment investment and separation energy consumption and reduce energy consumption and cost while improving efficiency and yield.

The invention discloses a plasticizer esterification reaction device which comprises a reaction cylinder, a stirring assembly and a sealing assembly, the stirring assembly is arranged on the reaction tank and is used for stirring materials in the reaction tank; the reaction cylinder comprises a cylinder body and a cylinder cover, the cylinder cover is detachably mounted at the upper end of the cylinder body through bolts, and a material cavity for accommodating materials is formed in the cylinder body; the sealing assembly is arranged at the joint of the barrel body and the barrel cover and used for sealing the joint of the barrel body and the barrel cover, the sealing assembly comprises a sealing piece and an extrusion piece, and the extrusion piece is movably arranged on the sealing piece. The sealing assembly is arranged, the sealing assembly comprises the sealing piece and the extrusion piece, and the extrusion piece is movably arranged on the sealing piece; and the extrusion piece moves relative to the sealing piece under the action of the pressure difference and extrudes the sealing piece, so that the two sides of the sealing piece are in tighter contact with the barrel body and the barrel cover, and the sealing effect is improved.

The present invention provides a system and a method for preparing a polyester polyol prepolymer. The system comprises an atmospheric pressure bubbling reaction rectifying tower and a reduced pressure heating reaction rectifying tower. The method comprises: introducing a protective gas into an atmospheric pressure bubbling reaction rectifying tower, introducing a raw material for preparing a polyester polyol prepolymer into the atmospheric pressure bubbling reaction rectifying tower, and carrying out a primary esterification reaction or an ester exchange reaction; and introducing the primary esterification product or the ester exchange product into a reduced pressure heating reaction rectifying tower, and carrying out one or more of a deep esterification reaction, an ester exchange reaction, and a pre-polycondensation reaction to obtain the polyester polyol prepolymer. The present invention has the advantages of high reaction efficiency, stable product quality, easiness in product separation, convenience in large-scale production and the like.

The invention relates to a self-crosslinking flame-retardant insulating material and a preparation method thereof, and belongs to the technical field of insulating material preparation. The self-crosslinking flame-retardant insulating material comprises the following raw materials: polyethylene, modified vinyl silane, an epoxy flame retardant, a water producing agent, a catalyst and an initiator, the modified vinyl silane is prepared from a ring-opening reaction product and a diamine compound through a condensation reaction; the ring-opening reaction product is prepared from an epoxy silane coupling agent and a 2, 2-dimethylolpropionic acid derivative through a reaction; the 2, 2-dimethylolpropionic acid derivative is prepared from 2, 2-dimethylolpropionic acid and acrylic acid through esterification reaction; the epoxy flame retardant is prepared from a hydroxyl-terminated dendritic compound and an epoxidation agent through an epoxidation reaction; the hydroxyl-terminated dendritic compound is prepared from hexachlorocyclotriphosphazene and alkyl binary primary alcohol through a substitution reaction. By introducing the modified vinyl silane and the epoxy flame retardant, a bi-crosslinking interpenetrating network is formed in the obtained material, so that the problems in the background technology are solved.

The invention relates to the field of high polymer materials, and discloses a preparation method and application of high-temperature-resistant transparent modified polyester. The preparation method comprises the following steps: 1) blending 9, 9-di-[(4-phenylphenoxy) dibenzoic acid] fluorene with diacid and dihydric alcohol, and carrying out esterification reaction; and 2) carrying out condensation polymerization on the esterification product to obtain the high-temperature-resistant transparent modified polyester with the glass transition temperature of more than 70 DEG C. According to the invention, 9, 9-di-[(4-phenylphenoxy) dibenzoic acid] fluorene is used as a modification monomer, and is copolymerized with other dibasic acids and dihydric alcohols to synthesize the modified polyester, and the modified polyester has high transparency and still has good mechanical properties and dimensional stability at high temperature. Therefore, the high-temperature-resistant transparent modified polyester is applicable to the application fields of optical films, optical lenses, reflective protective films, optical fibers or liquid crystal displays and the like.

The invention belongs to the technical field of grease preparation, and particularly relates to a preparation method and application of diglyceride oil with a weight reducing effect. Comprising the following steps: firstly, adding grease into a basic nutrient solution, adding strains for fermentation, and filtering to obtain a glycolysis product; adding glycerol into the glycolysis product, carrying out lipase esterification reaction, and carrying out centrifugal separation to obtain an oil phase; the method comprises the following steps: degrading triglyceride by adopting dominant strain fermentation, then adding glycerol, and carrying out esterification reaction under the action of dominant compound lipase to obtain the diglyceride oil. According to the method, the 1, 3-diglyceride can be selectively generated, the proportion of dominant grease of the 1, 3-diglyceride can be increased, and research shows that the prepared diglyceride oil has good weight reduction and fat reduction effects and has a good application prospect.

The invention belongs to the technical field of high polymer materials, and provides a high-flame-retardance degradable bio-based high polymer material and a preparation method thereof. Based on a degradable bio-based material polylactic acid, a bio-based flame retardant is introduced to realize the efficient flame retardant property of the material, and the preparation method comprises the following steps: firstly, carrying out esterification reaction on L-lactic acid and methacrylic acid under the action of an acid catalyst to obtain methacrylate lactate; and then reacting with 2-(2-ethoxyethoxy) ethanol to generate an ester compound with a long-chain structure and an unsaturated group. Then, a flame retardant containing a phosphaphenanthrene group and an ester compound are subjected to an addition reaction to prepare a bio-based flame retardant with a flame-retardant effect, so that the material has a relatively good carbonization effect and a relatively good capability of inhibiting flame spreading during combustion; polylactic acid, the bio-based flame retardant, the antioxidant, the lubricant, the ultraviolet light absorber and the modified compatilizer are mixed, and finally the biodegradable bio-based high polymer material with excellent flame retardance is obtained.

The invention provides a dry-wet cycle resistant composite soil stabilizer and a preparation method thereof. The curing agent is prepared from the following raw materials in parts by weight: 5 to 10 parts of polyacrylamide, 20 to 30 parts of cyclodextrin star derivative, 5 to 10 parts of polyvinyl alcohol, 5 to 8 parts of inorganic salt, 5 to 8 parts of sodium silicate, 10 to 15 parts of waterborne epoxy resin emulsion, 1 to 3 parts of polyoxypropylene triamine and water; the use amount of the water enables the solid content of the dry-wet cycle resistant composite soil stabilizer to be 25-60wt%; the cyclodextrin star derivative is prepared by carrying out esterification reaction on carboxymethyl-beta-cyclodextrin and methoxypolyethylene glycol according to the molar ratio of carboxyl to hydroxyl of 1: (1.1-1.2) under the action of a base catalyst; and the weight-average molecular weight of polyethylene glycol monomethyl ether is 1000 to 1500 g / mol. A plurality of grafting chains of the cyclodextrin star-shaped derivative disperse expansion and shrinkage stress of soil to different directions in the dry-wet cycle process, so that damage to a molecular structure due to stress concentration is avoided.

The invention discloses a red xanthene dye for blue photoresist color paste and a synthesis method of the red xanthene dye, and the synthesis method comprises the following steps: (1) sulfonyl chlorination reaction: carrying out sulfonyl chlorination reaction on xanthene molecules B containing two sulfonate radicals by using a chlorination reagent, and carrying out post-treatment to obtain a sulfonyl chloride intermediate C; and (2) esterification reaction: carrying out esterification reaction on the sulfonyl chloride intermediate C obtained in the first step by utilizing an esterification reagent, and carrying out post-treatment to obtain the target red xanthene dye A with methacrylamide at the tail end. The invention provides a novel xanthene dye molecule which can be mixed with a blue pigment color paste to prepare a blue photoresist color paste for improving the brightness of the color paste. In addition, the liquid crystal composition has the advantages of high transparency, high contrast ratio, good dispersity, relatively high covering power, tinting strength and the like, and is good in thermal stability and light stability; meanwhile, the synthesis method provided by the invention is simple, low in cost and easy for large-scale production.

The invention provides a glyceryl triacetate production parameter control method and system based on reinforcement learning, and relates to the technical field of optimization control methods, and the method comprises the steps: obtaining the production parameters of glyceryl triacetate; based on the kinetic model, constructing a kinetic equation of the esterification reaction of glycerol and acetic acid; constructing a digital twinborn simulation environment of the glyceryl triacetate production process; defining a reinforcement learning framework by taking a digital twin simulation environment as a scene; according to the reinforcement learning framework, taking the Elman neural network as a state predictor, and predicting the state of the glyceryl triacetate; solving the reinforcement learning framework through an MO-MPO algorithm, and determining an optimal control strategy and an optimal production parameter sequence corresponding to the optimal control strategy; judging whether the process capability index is smaller than a process capability index threshold value or not; if yes, continuing to solve the reinforcement learning framework; otherwise, outputting an optimal production parameter sequence; and controlling the optimal production parameter sequence through a PID (Proportion Integration Differentiation) control algorithm.

The invention relates to the technical field of liquid chromatography, and discloses a mixed product liquid chromatography comprehensive analysis method which comprises the following steps: S1, mixing products: respectively mixing aldehyde compounds and ketone compounds with different mobile phases, and then injecting into an injection chromatographic system; s2, liquid chromatographic analysis: separating and analyzing a mixed product by using a liquid chromatograph; s3, performing qualitative analysis; on the basis of liquid chromatographic analysis, each peak in a chromatogram is identified. The method aims at qualitative and quantitative analysis of main substances (groups) in an organic reaction mixed product system; the method is suitable for analyzing the relative percentage content of products related to organic chemical reactions such as raw materials (nonylphenol) related to a core production process, nonylphenol formylation reaction, nonylphenol esterification reaction, phenolic ester Fris rearrangement reaction and the like, and samples in a refining process; the influence of absorption peaks and chromatographic line oscillation of other non-target substances on the content analysis result can be effectively avoided.