29 results about "Autocatalysis" patented technology

The invention belongs to the technical field of image processing, and particularly relates to a contact network defect identification method based on multiple modalities, which comprises the following steps of: 1, acquiring a visible light image sequence and an infrared thermal imaging image sequence of a target contact network, and carrying out time alignment and temperature calibration to obtain a unified reference frame sequence and a thermal vision consistency label set; 2, constructing a structure change graph and an overheat candidate graph in the obtained unified reference frame sequence, calling a cross-modal physical semantic autocatalysis recombination algorithm, and taking a generated thermal vision consistency label set as a constraint; and step 3, taking the output fusion evidence body as input, combining the thermal vision consistency label set and the reversible channel audit record to verify the candidate area, obtaining a defect target, and outputting a defect category and a defect position. According to the method, the precision and stability of defect detection are improved, the traceability of the result is also realized, and a reliable guarantee is provided for intelligent operation and maintenance of the electrified railway overhead line system.

Chemical wave systems that utilize chemical compounds with nonlinear chemical wave behavior can be used to detect or sense material changes such as a change in a radiation source. Such chemical systems include autocatalysis that produce self-sustaining spatial and / or temporal fluctuations in chemical attributes such as species concentrations, pH, and / or redox state. Through application of the chemical compounds with wave behavior into engineered geologic environments, such as those for containment of a liquid or solid, the chemical wave behavior may be triggered or modified by perturbations, including intrusion into the environment. The chemical wave behavior is an indicator of the said perturbation and monitored by various means tailored to the type of chemical waves. The chemical waves can have a type of “fingerprint” based on their wave behavior that lasts beyond a transient disturbance that could later be discerned by measurement of the chemical wave attributes.

The invention belongs to the technical field of recycling of waste blended textiles, and particularly discloses a method for oxidative depolymerization of waste blended textiles into alpha-hydroxy acid and terephthalic acid, which comprises the following steps: adding waste blended textiles, a solid acid catalyst and a reaction solution into a catalytic reaction kettle, filling a certain amount of air and / or oxygen, and reacting for 2-4 hours; the method comprises the following steps: adding alpha-hydroxy acid into a reaction kettle, heating to a specified temperature, stirring, carrying out selective oxidative depolymerization, after the reaction is finished, filtering, concentrating, separating and purifying the product to obtain terephthalic acid, glycollic acid and lactic acid, and taking terephthalic acid and alpha-hydroxy acid as depolymerization products of blended textiles and also as catalysts to participate in depolymerization of blended textiles. According to the method, the autocatalysis process of depolymerization conversion of the waste blended textiles is achieved, the product composition is simple and easy to recycle, carbon atoms in the raw materials are fully utilized, the requirement of green chemistry is met, depolymerization conversion of multiple components in the waste blended textiles is achieved through a one-pot method, the process steps are few, economic benefits are high, and actual operation is simple.

The invention relates to a PDMAPAA (at) TA-APTES (at) PVDF composite hydrogel film as well as a preparation method and application thereof. According to the invention, PVDF is used as the base membrane, and the material is low in price, good in mechanical property, environment-friendly and good in recycling performance. A dual autocatalysis system is constructed by using iron ions (Fe < 3 + >) and tannic acid (TA), and the PDMAPAA-coated TA-APTES-coated PVDF composite hydrogel film is rapidly and efficiently prepared on a large scale under a mild condition. The prepared PDMAPAA (at) TA-APTES (at) PVDF composite hydrogel membrane has the advantages of high flux, super hydrophilicity, underwater super oleophobicity and long-time stable anti-pollution property. The preparation method is simple, convenient to operate, low in energy consumption, easy to treat and free of secondary pollution, conforms to the concept of green chemistry, and has a good application prospect in the field of oil-water separation; the prepared anti-pollution oil-water separation membrane has super-hydrophilic property and excellent anti-pollution property, can stably operate for a long time, and is suitable for industrial production.

A low-cost, resource-saving, easy-to-perform, preferably harmless and fault-tolerant process is disclosed with which a durable, robust, chemically and mechanically stable heat exchanger element with advantageous thermohydraulic and magnetic properties can be produced. The method comprises:providing a magnetocaloric substrate with a plurality of channels or pores which preferably form continuous channels,immersion of the substrate in a tempered aqueous reaction solution, which leads to an autocatalytic-chemical deposition of a metal coating on the surface of the substrate.

The invention belongs to the field of polymer synthesis and material science, and particularly discloses a water-enhanced room-temperature phosphorescence emission polymer and a synthesis method and application thereof.The water-enhanced room-temperature phosphorescence emission polymer is synthesized from polyisocyanate, an amide monomer and a silane coupling agent under autocatalysis or catalysis of dibutyltin dilaurate to form a linear polymer; when the polymer is coated on a matrix material, the polymer can be cured and molded at room temperature to obtain an organic room-temperature phosphorescent coating, and room-temperature phosphorescent enhanced emission is realized after hydrolysis and curing. The time required for hydrolytic curing can be effectively changed by regulating and controlling the proportion of the monomers, and the method has the advantages of adjustable structure, low toxicity, wide adaptability of the monomers, simplicity in operation, low cost of the monomers and the like. The prepared organic room-temperature phosphorescent polymer has the characteristics of excellent water-phase afterglow stability, excellent adhesive power, long-life afterglow and the like, and can be applied to the fields of coatings, biological imaging and anti-counterfeiting.

The invention relates to a photon-induced autocatalysis solar cell non-contact electrode deposition method and device. The method sequentially comprises the following steps that S1, a cell substrate is prepared; s2, preparing a P side electrode; s3, preparing an N-side electrode; and S4, preparing a conducting layer and an anti-oxidation layer. According to the invention, mask preparation and deplating processes are avoided, and the electrode preparation process is simplified.

The invention provides dealcoholized silicone rubber and a preparation method thereof, and belongs to the technical field of high polymer materials. The dealcoholized silicone rubber comprises the following components in parts by mass: 100 parts of a base material polymer, 5-30 parts of a reinforcing filler, 3-8 parts of a cross-linking agent, 0.001-1 part of a catalyst and 0.2-3 parts of an auxiliary agent. According to the preparation method, isocyanate methyl trimethoxy silane and the like are adopted as cross-linking agents, amino silane or amino silicon oil is adopted as a catalyst, cross-linking curing is carried out in an autocatalysis mode, a traditional titanium catalyst or an organic tin catalyst is not used, and therefore it is guaranteed that the dealcoholized silicone rubber obtained through the technical scheme is non-toxic and harmless; and the problem of viscosity peak does not occur in the production process, so that the actual demand is met.

The invention discloses an anisotropic conductive adhesive film and a preparation method and application thereof.The preparation method comprises the following steps that polyethylene glycol diacrylate, N, N '-dimethylethylenediamine and pentaerythritol tetrakis (3-mercaptopropionic acid) react to synthesize a component A, and then silver nanosheets are dispersed in polyethylene glycol diacrylate to obtain a component B; mixing the component A, the component B and an organic solvent, blade-coating to form a liquid film, regulating and controlling the temperature of a substrate and surface airflow, and curing after the solvent is volatilized to obtain the anisotropic conductive adhesive film. According to the anisotropic conductive adhesive film provided by the invention, the hexa-sulfydryl polymer with an autocatalysis function is used as a matrix, the silver nanosheets are directionally agglomerated in the Z-axis direction to form a continuous conductive path, and the anisotropic conductive adhesive film has high mechanical bonding strength, stable anisotropic conductive performance and excellent flexibility and can meet the connection requirements of flexible hybrid electronic devices.

The invention relates to self-initiated polymerized lignin-based temperature-sensitive gel as well as a preparation method and application thereof, and belongs to the technical field of macromolecular functional materials. In order to solve the problem that polymerization is blocked due to the free radical scavenging effect of lignin under the condition of high lignin content, the invention provides a preparation method of a self-initiated polymerized lignin-based temperature-sensitive gel, and the preparation method comprises the following steps: preparing lignosulfonate and preparing the lignin-based temperature-sensitive gel. By constructing a lignosulfonate ester (LSME)-Fe < 3 + >-APS oxidation-reduction synergistic autocatalysis system, 20-70-second ultra-fast gelation under the room temperature condition is achieved, a double-network structure with chemical covalent bonds and physical dynamic bonds is constructed, and the obtained hydrogel has excellent mechanical strength, conductivity and temperature response performance and can be applied to the field of biomedical materials. The sensor can be used as a flexible strain sensor for detecting multi-scale motion signals of a human body, can also be used for real-time temperature detection and physiological signal acquisition, and shows good reliability and application potential.

The application relates to a Ca3(PO4)2 crystal reinforced zwitterionic hydrogel membrane and a preparation method and application thereof, the application uses PVDF as a base film, the material is low in price, good in mechanical performance, friendly to the environment and good in recycling performance. Through a polyphenol-metal dual autocatalysis method, a layer of zwitterionic hydrogel is simply and efficiently grafted on the surface of the PVDF film without heating and ultraviolet irradiation. Through a mineralization technology, the zwitterionic hydrogel membrane reinforced by inorganic crystals is used for constructing an inorganic crystal reinforced zwitterionic hydrogel membrane, preparing an oil-water separation membrane which is resistant to pollution, good in mechanical performance and long-term stable and cyclic. The inorganic crystal reinforced zwitterionic hydrogel membrane has the advantages of strong hydration performance and high mechanical stability, has a high separation efficiency on oil-in-water emulsion, shows obvious anti-pollution performance and good cyclic stability. The preparation method is simple, convenient to operate, low in energy consumption, easy to handle and free of secondary pollution, meets the green chemistry concept and has a good application prospect in the field of oil-water separation.

The invention discloses an advanced oxidation treatment device and treatment method for printing and dyeing wastewater, and relates to the technical field of sewage treatment.The device comprises a closed reactor, a feeding port is formed in the bottom of the closed reactor, and a discharging port and an exhaust port are formed in the top of the closed reactor; a functional filler layer is arranged in the closed reactor; activating balls and persulfate are arranged in the functional filler layer, the activating balls are formed by soaking Fe3O4 nano-particles and wine brewing wastewater fermentation liquor, and volatile fatty acid adsorbed on the surfaces of the activating balls is at pH gt; when the temperature is 7.5, the persulfate is desorbed and activated to generate sulfate free radicals. According to the invention, an autocatalysis system composed of pH responsive activation balls and persulfate is constructed in the functional filler layer, so that sulfate free radicals can be generated without adding an external agent, and meanwhile, the purpose of reducing carbon emission by inhibiting the activity of methanogens through metabolic competition is achieved.

The present application relates to a kind of PDMAPAA@TA-APTES@PVDF composite hydrogel film and its preparation method and application.The present application uses PVDF as base film, material is cheap, mechanical performance is good, environment-friendly, and good recycling performance.Iron ion (Fe 3+ ) And tannic acid (TA) are used to construct double autocatalysis system, and PDMAPAA@TA-APTES@PVDF composite hydrogel film is prepared rapidly, efficiently and massively under mild conditions.The prepared PDMAPAA@TA-APTES@PVDF composite hydrogel film has high flux, superhydrophilicity, underwater superoleophobicity and long-time stable antifouling property.The preparation method of the present application is simple, easy to operate, low in energy consumption, easy to handle and free of secondary pollution, in line with the concept of green chemistry, and has good application prospect in oil-water separation field.The prepared antifouling oil-water separation membrane has superhydrophilicity and excellent antifouling property, can be operated stably for a long time, and is suitable for industrial production.

The invention discloses a full-automatic catalyst integrated preparation system, and belongs to the technical field of catalyst preparation, a working platform is provided with a first support cylinder, the first support cylinder is internally provided with a working cylinder, one end of the working cylinder is rotatably provided with a first side door, the other end of the working cylinder is provided with a second side door, and one side of the first side door is provided with a heating working box; a plurality of first heating rods are installed on the side, close to the first side door, of the heating working box, first film scraping rods are symmetrically arranged on the two sides of the first heating rods, the first heating rods and the first film scraping rods penetrate through the first side door, and electric heaters evenly distributed in an annular array are arranged in the first supporting barrel and located on the periphery of the working barrel; a quantitative feeder, a liquid guide pipe and a gas guide pipe are mounted on the second side door in a penetrating manner, and the thickness of a heat conduction layer between the first heating rod and a reactant and between the second heating rod and the reactant is reduced through the first film scraping rod and the second film scraping rod, so that a nanoscale catalyst powder product is automatically and integrally prepared.

The invention discloses a CRISPR (clustered regularly interspaced short palindromic repeats) detection method and kit based on an autocatalytic feedback loop and application of the CRISPR detection method and kit. The method comprises the following steps: providing a sample to be detected; the method comprises the following steps: preparing a reaction system containing Cas12a protein, target specific crRNA1, a hairpin structure fluorescent probe, a short-chain ssDNA auxiliary chain, an autocatalytic crRNA auto and a buffer solution; adding a to-be-detected sample into the reaction system, and carrying out constant-temperature reaction. When crRNA1 guides Cas12a to recognize target nucleic acid, the trans-cleavage activity of the Cas12a is activated, and the hairpin probe is cleaved; the cleavage hairpin probe is dissociated into two single chains, one single chain and a short ssDNA auxiliary chain are combined with crRNA auto together to cooperatively activate Cas12a, an autocatalysis positive feedback loop is formed, and exponential amplification of a fluorescence signal is achieved. According to the invention, high-sensitivity, rapid and single-enzyme-driven nucleic acid detection can be realized without pre-amplification of target nucleic acid, and the method is suitable for on-site instant detection.

The invention relates to a preparation method and application of a super-aerophobic multilayer three-dimensional integrated membrane electrode. The membrane electrode comprises a proton exchange membrane and a multi-layer three-dimensional catalyst layer grown on the surface of the proton exchange membrane by an in-situ wet chemical method; a hydrophilic surfactant is introduced into an aqueous solution system to induce in-situ direct growth of a catalyst layer, so that the use of a hydrophobic ionomer in a traditional membrane electrode preparation process is avoided, and the hydrophilic and hydrophobic properties of the membrane electrode are improved; and when the second catalytic layer and the second catalytic layer are constructed, metal with an autocatalysis function is introduced as a nucleation center, so that aggregation and growth of particles of the catalytic layers are avoided, formation of a multi-layer three-dimensional structure is guaranteed, the utilization rate of the catalyst is increased, and water vapor transmission is optimized. The membrane electrode constructed by the invention has the advantages of high catalyst utilization rate, excellent electrode performance and the like. The prepared membrane electrode can be used for a reaction device for producing hydrogen by electrolyzing water.

The invention relates to the technical field of power equipment protection, in particular to a zinc oxide resistor disc breakdown path analysis method and system. The method comprises the following steps: acquiring a microstructure model of the zinc oxide resistor disc, and establishing a three-field coupling control equation set of a potential field, a temperature field and a sequence parameter field; the evolution of the sequence parameter field is driven by a free energy functional, the phase separation barrier energy of the functional is a nonlinear decline function of local temperature, and an electric energy item is coupled with a sensitivity factor with a larger value at a crystal boundary; the evolution equation further comprises a disturbance term related to the electric field gradient and Joule thermal product and an autocatalysis term related to the current density and the global damage degree; the equation set is solved, and the penetrating connected domain with the sequence parameter value lower than the threshold value is determined as the breakdown path. According to the scheme of the invention, the prediction of the breakdown initiation position has more physical basis, the process simulation is closer to reality, and the scientificity of breakdown path prediction is improved.

The invention discloses a multi-enzyme composition for promoting degradation of poly-L-lactic acid facial filling microspheres and a preparation method of the multi-enzyme composition, and belongs to the technical field of enzyme compositions. The multienzyme composition is prepared from the following raw materials in parts by mass: 10 to 15 mg of protease K, 30 to 40 mg of bromelain, 0.75 to 1 mg of collagenase, 20 to 30 mg of esterase, 10 to 15 mg of lipase, 1600 to 1800 mg of mannitol and 600 to 800 mg of sodium carboxymethyl cellulose. All the raw materials are mixed in a phosphate buffer system and prepared into the freeze-dried powder injection. The method has the advantages that multiple enzymes perform their own functions, lipase and esterase have a synergistic effect, the degradation efficiency of poly-L-lactic acid is remarkably improved through an enzymatic hydrolysis-acidic autocatalysis two-stage mechanism, and effective and rapid degradation of the poly-L-lactic acid facial filling microspheres is achieved.

The invention discloses a synthesis method of 1, 4-butynediol, which comprises the following steps: adding a formaldehyde solution and a buffer solution into an electrochemical reactor; the pH value of the buffer solution is 8.0 + / -0.1; acetylene gas is introduced into the mixed solution in the electrochemical reactor, stirring is performed, 2.8-3.2 V direct current is introduced, the acetylene gas and the formaldehyde solution are subjected to a reaction, and the reaction temperature is 40-60 DEG C; wherein a copper electrode with a mixed layer on the surface is used as an anode, and the mixed layer is composed of CuO and Cu2O; removing the solvent from the solution after the reaction is completed to obtain 1, 4-butynediol; according to the method, the 1, 4-butynediol is prepared by adopting an electrochemical method, so that a preparation system of the 1, 4-butynediol is changed; compared with a traditional gas-liquid-solid three-phase reaction, an electrode autocatalysis strategy is adopted, a reaction system is optimized into a gas-liquid two-phase reaction, the mass transfer resistance in the reaction process is reduced, and therefore the reaction time is shortened.

The invention relates to the technical field of polyurethane adhesives, and discloses a heat-conducting polyurethane structural adhesive based on polyhydroxy diamine autocatalysis and a preparation method thereof.The heat-conducting polyurethane structural adhesive is composed of a component A and a component B. The mass ratio of the component A to the component B is 1: (0.8-1.2), and the component A is prepared from, by weight, 25-35 parts of modified castor oil polyol and 0.8-3.2 parts of a polyhydroxy diamine autocatalysis system; 3-6 parts of a water absorbent, 40-85 parts of a composite heat-conducting filler, 0.5-1.5 parts of a wetting dispersant, 0.3-0.8 part of a tackifier and 0.3-1.4 parts of a thixotropic agent. According to the scheme, an autocatalysis system compounded by tetrahydroxy diamine and trihydroxy diamine is adopted, a metal catalyst does not need to be additionally added, the environmental protection risk and migration problems caused by organic tin are avoided, catalytic activity and filler wettability are considered, the high-filling heat-conducting filler is effectively dispersed, meanwhile, a cross-linked structure is regulated and controlled, hygroscopicity is reduced, and the thermal conductivity is improved. And in combination with a phosphorus-containing component, aluminum interface bonding is enhanced, the bonding stability after damp-heat aging is improved, and the comprehensive requirements for heat conduction, bonding and environmental protection in the fields of new energy and the like are met.

The present invention belongs to the field of polymer luminescent materials, and particularly relates to a polymer phosphorescent material without aromatic rings, halogens and metal elements and having red room temperature afterglow emission, and a preparation method thereof. Maleimide monomers and vinyl monomers undergo anionic copolymerization under the action of a catalyst or autocatalysis to prepare a branched polymer; the branched polymer is fully mixed with polyvinyl alcohol to form an amorphous transparent phosphorescent polymer film. The polymer is composed of unconventional chromophores such as imide groups, amide groups or tertiary amine groups, and room temperature afterglow emission from green to red can be achieved by changing the comonomers, pretreatment methods and excitation wavelengths. The polymer film has rich adjustable room temperature afterglow properties, has a phosphorescent emission of up to 630 nm, and has a red room temperature afterglow with a chromaticity of (0.56, 0.39), a long phosphorescent lifetime, and has the advantages of simple and efficient preparation method, low price, environmental friendliness, etc.

The invention relates to an anti-freezing hydrogel electrolyte, and discloses a lignin-zinc ion anti-freezing hydrogel electrolyte as well as a preparation method and application thereof. A catechol group generated by hydrolysis of sodium lignin sulfonate (LS) in an acidic environment is more easily oxidized to generate quinone, and quinone can be complexed and guided by Zn < 2 + > to generate catechol, so that redox balance of catechol and quinone is constructed, APS is promoted to be converted into SO4 <-> to react with water to generate OH, and the pH value of the catalyst is improved. The autocatalysis system can generate singlet oxygen free radicals (1O2) in an acid environment, and various free radicals jointly initiate polymerization of an ammonium acrylate (AM) monomer to form gel. The newly developed hydrogel has excellent electrical conductivity, strong mechanical properties and freezing resistance by virtue of an environment-friendly and rapid polymerization mode. Therefore, the work provides a new thought for the design of the multifunctional hydrogel solid electrolyte of the flexible electronic device, and provides possibility for large-scale production of the hydrogel.

The invention provides an anode for a PEM water electrolyser and a preparation method thereof.The anode comprises a stainless steel substrate and a layered oxide structure generated on the surface of the stainless steel substrate in situ, and the layered oxide structure comprises a manganese-poor inner layer and a manganese-rich outer layer; the manganese-rich outer layer comprises a crystal manganese oxide secondary outer layer and an amorphous iron-containing manganese oxide outermost layer. The layered oxide structure on the surface of the anode can keep long-time water electrolysis catalytic activity and stability under the acidic condition, and the problems of corrosion and stability of autocatalytic and non-noble metal electrodes under the acidic environment are solved through proper surface structure component selection. According to the anode, the cost of hydrogen production based on a noble metal catalyst at present is remarkably reduced, and the problem of high cost of PEM large-scale electrolytic hydrogen production is expected to be solved.

The invention belongs to the field of heavy anti-corrosion coating engineering, and discloses a mining anti-rust and anti-corrosion multifunctional nano composite adhesive coating and a preparation method thereof.A coating main agent and a curing agent are prepared according to the weight ratio of 5: 1, and a nickel acetate amine complex and nano silicon dioxide are added into the main agent; in the curing process of the coating, metal ions and iron atoms on the surface of a base material are subjected to an atom interpenetrating alloying reaction, an intermetallic compound layer is synchronously formed, micro-nano roughness is constructed by means of nano silicon dioxide and a fluorinated acrylate copolymer, and a super-hydrophobic surface is achieved. According to the process, primer or an external heating source is not needed, surface drying can be rapidly cured, meanwhile, active sites are reserved, and a new metal compound can be generated through automatic catalysis after micro-damage so as to seal cracks; the coating can block invasion of corrosive media for a long time in salt mist, seawater and strong acid and alkali environments, and is suitable for heavy-duty anticorrosion scenes of mines and ocean platforms.

The invention provides an autocatalytic interfacial polymerization method for controlling diffusion and polymerization reaction of monomers through a molecular encapsulation technology, and reactive monomers are sequentially decomposed and released through nanocapsules under the catalysis of HCl to participate in interfacial polymerization. The method contributes to more uniform diffusion of amine monomers on a water / oil interface to form a polyamide nano-membrane with a more uniform ion transmission channel, and the nano-filtration membrane has highly controllable structural characteristics, high permeability and accurate separation efficiency on mixed monovalent salt. The method disclosed by the invention can be used for preparing the highly uniform polyamide membrane of the accurate molecular sieve.

A semiconductor package and a method for fabricating a metallization of a non-conductive surface of the semiconductor package are provided. In one embodiment, the method includes depositing an adhesion layer on a polymeric surface by an electroless deposition process. The polymer surface defines sidewalls of the through-hole, and the adhesion layer comprises a cobalt alloy or a nickel alloy. The method further includes depositing a copper seed layer on the adhesion layer by a immersion plating process. The copper seed layer displaces a portion of the adhesion layer. The method further includes filling the through via with a copper-containing layer.

The invention relates to the technical field of detection, and discloses a defect topology gold particle triple detection card based on gold growth autocatalysis signal amplification and a preparation method and application thereof.According to the scheme, on the basis of the high-specific-surface-area signal amplification characteristic of defect topology gold particles, specific antibody labeling and a precise assembly process are combined, and CRP, MxA and (1, 2, 3, 4-tetramethyl-3-pentanediol monoisobutyrate, MxA and (1, 2, 3, 4-tetramethyl-3-pentanediol monoisobutyrate) triple detection is achieved. 3) efficient detection of the tri-index of-beta-D glucan is realized, detection sensitivity, specificity and stability are taken into consideration, and the problems of weak signal and low single-index detection efficiency of a traditional detection card are solved. According to the scheme, gold growth enhancement liquid (a mixture of HAuCl4 and NH2OH. HCl) is dropped after detection, the defect topological gold particles catalyze the reduction reaction of HAuCl4 and NH2OH. HCl to generate new defect topological gold particles, the new defect topological gold particles are rapidly deposited and cover the surfaces of the initial defect topological gold particles, the defect topological gold particles with larger sizes are formed, and the defect topological gold particles with larger sizes are obtained. Therefore, gray black precipitates are generated on the T line and the C line of the test strip, and obvious signal amplification is formed.

The invention relates to the technical field of synthesis of dihydroxyethyl cyclohexylamine, and provides a method for preparing dihydroxyethyl cyclohexylamine through autocatalysis. The preparation method comprises the following steps: carrying out autocatalytic addition reaction on cyclohexylamine and ethylene oxide to obtain dihydroxyethyl cyclohexylamine; the autocatalytic addition reaction comprises a low-temperature initiation stage, a high-temperature reaction stage and a curing stage in sequence. According to the method, ethylene oxide occupies the positions of two reactive hydrogen of amino in cyclohexylamine through a low-temperature initiation stage, a large amount of physical and chemical adsorption is formed, then the temperature is raised, the addition reaction is preferentially carried out according to the reaction activity, and finally the two reactive hydrogen on cyclohexylamine are preferentially and uniformly added with ethylene oxide respectively, so that the reaction yield is improved. The generation of polyethyoxyl cyclohexylamine is avoided. According to the method, no catalyst needs to be added, autocatalysis is formed through control over reaction conditions, the reaction is rapid, operation is easy, the refining process is omitted, the purity of the target product is high, and the purpose of atomic-scale directional synthesis is achieved.

This invention relates to the field of electroplating solution replenishment control technology, and discloses an online analysis and replenishment control system for cyanide-free electroplating solutions for semiconductor packaging. The system includes: a parameter acquisition and concentration extraction module, a kinetic decay assessment module, a Faraday consumption calculation module, a replenishment acceleration rate prediction model construction module, and a control command conversion module. By acquiring operating environment parameters and macroscopic concentration data, the system calculates the spontaneous kinetic degradation rate, quantifies the latent losses in the non-energized state, calculates the electrochemical Faraday consumption rate, constructs a replenishment acceleration rate prediction model, calculates the replenishment acceleration rate control quantity, and converts it into the control command pulse frequency to drive the metering pump assembly, injecting replenishment solution into the circulation pipeline. This invention actively compensates for the non-electrochemical losses of the complexing agent, avoiding the metal ion disproportionation autocatalysis caused by relying solely on concentration feedback lag, thereby improving the long-term stability and process yield of cyanide-free electroplating solutions in high-precision semiconductor packaging.