89 results about "Atom-transfer radical-polymerization" patented technology

The invention discloses a cellulose coated diaphragm and a preparation method thereof in the field of lithium ion batteries, the diaphragm comprises alpha-cellulose pulp, a cellulose grafted phenylboronic acid-co-oligomeric ethylene oxide copolymer, a thermal response star zwitterionic polymer and nano aluminum oxide, and an N-methylmorpholine-N-oxide aqueous solution is adopted as a solvent system. The preparation method comprises the following steps: firstly synthesizing a cellulose grafted copolymer with dynamic borate bonds through atom transfer radical polymerization, then preparing a star polymer with thermal response arms and zwitter-ion terminals by taking cyclodextrin as a core, and finally mixing all the components to prepare coating slurry. And the composite diaphragm is prepared through the processes of coating, phase conversion, ultraviolet curing and drying. The diaphragm combines the thermal stability and lyophilic property of cellulose, forms a dynamic self-adaptive interface layer through the synergistic effect of two functional compounds, has the advantages of active safety protection, dendritic crystal inhibition, long cycle life and the like, and remarkably improves the comprehensive performance of the lithium ion battery.

The application belongs to the technical field of membrane separation materials, and discloses an ultrahydrophilic oil-water separation membrane, a preparation method and application thereof, and comprises the following steps: 2-(2-bromoisobutyryloxy)ethyl methacrylate monomers are prepared from 2-hydroxyethyl methacrylate and 2-bromoisobutyryl bromide, and a polymer with an atom transfer radical polymerization initiator is prepared through a free radical polymerization reaction; the polymer with the atom transfer radical polymerization initiator and polyacrylonitrile are dissolved into a solvent, and a PAN / P(AN-g-BIEM) blended membrane is prepared through a non-solvent induced phase separation method; and a hydrophilic polymer brush is grafted to the surface of the PAN / P(AN-g-BIEM) blended membrane to obtain the ultrahydrophilic oil-water separation membrane; the ultrahydrophilic oil-water separation membrane prepared by the application has a high separation flux, excellent oil-water separation efficiency and separation performance for different oil-in-water emulsions.

The invention relates to the technical field of microsphere modification, in particular to a surface-functionalized microsphere and a modification method thereof.The modification method of the surface-functionalized microsphere comprises the steps that a microsphere solution obtained by mixing a microsphere with double-bond olefin on the surface and an organic solvent is mixed with molecules containing alkenyl functional groups and an azo initiator; and carrying out addition reaction to obtain the surface functionalized microspheres. Functional groups on the surfaces of the microspheres are modified by adopting an atom transfer radical polymerization method, double-bond olefin externally hung on the surfaces of the microspheres and molecules containing alkenyl functional groups are utilized, the molecules containing the alkenyl functional groups and the double-bond olefin on the surfaces of the microspheres can be subjected to an addition reaction under the action of an azo initiator, and the functional group molecules are grafted to the surfaces of the microspheres, so that the microspheres are prepared. The surfaces of the microspheres are modified into functional groups with different contents and different lengths. According to the method, the surface groups of the microspheres can be uniformly modified, and the surfaces of the microspheres can be modified into different numbers of functional groups and functional molecules with different chain lengths.

The invention relates to the technical field of papermaking and food packaging materials, in particular to a preparation method of full-degradable plastic-substituted high-strength food packaging paper. Preparing a fiber layer by taking plant fiber as a base material; the preparation method comprises the following steps: grafting a methyl methacrylate-butyl acrylate block copolymer on nano-cellulose through an atom transfer radical polymerization technology to prepare enhanced nano-cellulose; dialdehyde starch rich in aldehyde groups and chitosan are subjected to a Schiff base reaction to form a dynamic cross-linked network, polylactic acid microspheres modified by beta-cyclodextrin are introduced to serve as supramolecular enhancement units, and functional coating liquid is prepared; and finally, coating the functional coating liquid on the fiber layer, and drying, cross-linking and curing to obtain a finished product. Through cooperation of chemical grafting, dynamic covalent bonds and supramolecular action, the packaging paper is endowed with extremely high strength and toughness and excellent oil and moisture resistance and heat sealability, meanwhile, it is ensured that the packaging paper can be completely biodegraded in the natural environment, and functional replacement of traditional plastic packaging is successfully achieved.

The invention discloses a full-biodegradable bag and a preparation method thereof in the technical field of biodegradable materials.According to the full-biodegradable bag, polylactic acid and poly (butylene adipate-co-terephthalate) serve as matrixes, and performance optimization is achieved by adding a specially-made nanofiber interpenetrating network compatibilizer and a star-shaped structure bio-based plasticizer; wherein the nanofiber interpenetrating network compatibilizer is prepared by grafting polylactic acid and poly (butylene adipate-co-terephthalate) chain segments on cellulose nanofibers through an atom transfer radical polymerization technology, and the star-shaped structure bio-based plasticizer is prepared through ring opening polymerization and melt grafting technologies. In addition, the formula also comprises a maleimide modified lignin filler, an ethylene bis stearamide lubricant and an antioxidant. Through the synergistic effect of the two specially-made modified compounds, the compatibility of all the components is remarkably improved, the preparation process is simple and reliable and suitable for industrial production, and the problem of white pollution of traditional plastic products can be effectively solved.

The invention relates to a PVP-b-PMMA (Polyvinyl Pyrrolidone-b-Polymethyl Methacrylate) block polymer, a preparation method thereof and an ultrafiltration membrane. The PVP-b-PMMA block polymer is prepared from the following raw materials: N-vinyl pyrrolidone and methyl methacrylate according to a mass ratio of 1 to (0.3 to 4); the preparation method of the PVP-b-PMMA block polymer comprises the following step: carrying out atom transfer radical polymerization on N-vinyl pyrrolidone and methyl methacrylate to obtain the PVP-b-PMMA block polymer. According to the preparation method disclosed by the invention, the PVP-b-PMMA block polymer with excellent performance is prepared by designing the mass ratio of the raw materials of N-vinyl pyrrolidone (NVP) and methyl methacrylate (MMA) for preparing the PVP-b-PMMA block polymer. The filtering membrane prepared from the PVP-b-PMMA block polymer can realize the synergistic improvement of high flux, retention rate, pollution resistance and stability.

The application discloses a preparation method and application method of a high-performance optical fiber coating modified by polymer grafted carbon nanotubes, and the preparation method comprises the following steps: pre-treating carbon nanotubes to obtain brominated carbon nanotubes; performing grafting treatment on the brominated carbon nanotubes through photocatalytic atom transfer radical polymerization to obtain polymer grafted functionalized carbon nanotubes; and mixing the polymer grafted functionalized carbon nanotubes with a prepolymer, an active diluent and a photoinitiator to obtain the required high-performance optical fiber coating. The carbon nanotubes are grafted with polyacrylate polymer chains on the surface, which can improve the dispersibility of the carbon nanotubes in the coating system, ensure the long-term stability and functional effectiveness of the carbon nanotubes in the coating, overcome the problems of poor compatibility and uneven dispersion of existing carbon-based composite coatings, improve the mechanical properties and thermal stability of the optical fiber coating, enhance the bonding strength between the coating and the optical fiber, and provide a new perspective for the preparation of high-performance optical fiber coatings.

The application discloses a preparation method of a yacht special high-adhesion anti-fouling paint, which comprises the following steps: preparing an anti-fouling paint resin by atom transfer radical polymerization of a catechol monomer containing an unsaturated double bond, an acrylic ester monomer containing an epoxy group, a silane acrylate monomer and an acrylic monomer, and mixing the resin with an amino-modified pigment, an anti-fouling agent and the like to obtain the anti-fouling paint. Compared with traditional anti-fouling paint, the catechol structure contained in the application can form a strong interaction with various substrates, greatly increasing the adhesion of the paint and avoiding the paint from falling off when the yacht is sailing at a high speed. The amino-modified pigment can be uniformly dispersed in the paint by reacting with the epoxy group of the resin matrix, avoiding the color deviation caused by pigment deposition or falling off, and enabling the yacht to keep a bright paint color for a long time. The amino group reacts with the epoxy group to form a cross-linking structure, increasing the hardness of the coating and resisting the impact of water flow and silt during the sailing of the yacht.

The present application relates to the preparation field of organic polymer monolithic column, in particular to a kind of double-continuous supermacroporous cellulose / polystyrene composite monolithic column and its preparation method and application.Firstly, O / W Pickering emulsion is prepared using modified cellulose nanocrystal (CNC), and Janus CNC-PS with single side grafted polystyrene (PS) polymer brush is prepared by electron activation regeneration-atom transfer radical polymerization (AGET-ATRP) reaction system, and double-continuous phase emulsion gel (Bijel) is prepared by one-step stirring method using Janus CNC-PS with different HLB values as stabilizer.Then, double-continuous supermacroporous cellulose / polystyrene composite monolithic column is obtained by in-situ active polymerization through AGET-ATRP reaction using Janus CNC-PS as macromolecular initiator and Bijel as emulsion template.The obtained monolithic column has uniform skeleton structure, double-continuous skeleton and pore, high mechanical strength, and the unmodified side of CNC covers the outer surface of skeleton, so that the pore surface has hydrophilicity and is easy to modify.The monolithic column effectively overcomes the defects of current polymer monolithic column, such as poor biocompatibility, low mechanical strength and low specific surface area, and has great application potential in the field of enzyme and cell immobilization and biomacromolecule separation and analysis.

The invention discloses a waterproof antibacterial moisture-conducting home textile fabric and a preparation method thereof, and belongs to the field of textile fabric processing, the waterproof antibacterial moisture-conducting home textile fabric sequentially comprises a waterproof antibacterial outer layer, a sweat-absorbing middle layer and an antibacterial inner layer from top to bottom, and the waterproof antibacterial outer layer, the sweat-absorbing middle layer and the antibacterial inner layer are connected together in a laminated mode; the waterproof and antibacterial outer layer is used for preparing waterproof and antibacterial silicon dioxide nano particles through a method of initiating atom transfer radical polymerization on the surface, then the waterproof and antibacterial silicon dioxide nano particles are polymerized on the surface of the cotton fabric, the sweat-absorbing middle layer is composed of regenerated cellulose fibers with sweat-absorbing columns, and the antibacterial inner layer is formed by weaving bamboo fibers and milk protein fibers. The home textile fabric has excellent waterproof, antibacterial and moisture-conducting properties, and the washing resistance and the strength of the home textile fabric are basically not affected.

The invention discloses a hyperbranched structure grafting-based shrinkage reducing agent for UHPC (Ultra High Performance Concrete), a preparation method of the shrinkage reducing agent and a preparation method of a polycarboxylate superplasticizer. Two types of shrinkage reducing monomers are compounded and then polymerized with modified cyclodextrin through an ATRP (Atom Transfer Radical Polymerization) method to generate the shrinkage reducing agent which is adaptive to UHPC (Ultra High Performance Polycarbonate) and has the functions of regulating and controlling surface tension and keeping internal humidity. The preparation process is simple, convenient and easy to control, the cost is low, the product property is stable, on the premise of ensuring the mechanical property of the concrete, the shrinkage rate of the concrete can be stably reduced for a long time, the cracking resistance of the concrete is improved, the durability of the concrete is improved, and the application requirements of UHPC under more complex working conditions are promoted.

The application belongs to the technical field of separation resin, and relates to a zwitterionic ion exchange resin and a preparation method and application thereof. The zwitterionic ion exchange resin is obtained by introducing chloromethylated polystyrene resin into monomer 3-[N,N-dimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]ammonium]propane-1-sulfonate and monomer methacryloyloxyethyl trimethyl ammonium chloride through an atom transfer radical polymerization reaction. The exposed quaternary ammonium salt groups on the 3-[N,N-dimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]ammonium]propane-1-sulfonate and the methacryloyloxyethyl trimethyl ammonium chloride in the zwitterionic ion exchange resin can improve the separation rate of acid and sugar; meanwhile, the sulfonate groups on the 3-[N,N-dimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]ammonium]propane-1-sulfonate in the resin can effectively weaken the sulfuric acid tailing phenomenon.

The invention discloses a preparation method of cationic polyacrylamide for an oil field in the field of oilfield chemical agents, which comprises the following steps: firstly, preparing a carbon dioxide response type star polymer modified material which is synthesized by taking ethylenediamine as a core through four-step reaction: firstly, reacting with a brominating reagent to form a four-arm initiator; carrying out atom transfer radical polymerization on the star-shaped polymer, dimethylaminoethyl acrylate and hexafluorobutyl acrylate to construct a star-shaped skeleton; then carrying out inclusion modification with hydroxypropyl beta cyclodextrin through host-guest interaction; and finally, performing double crosslinking through zinc ion coordination and etherification reaction to obtain the modified material. The modified material, acrylamide, a cationic monomer and an auxiliary monomer are dissolved in water, a two-stage polymerization process of low-temperature pre-polymerization and high-temperature post-polymerization is performed, and granulation, drying and crushing are performed to obtain a final product. The polyacrylamide prepared by the method shows excellent tackifying performance and temperature-resistant and salt-resistant performance in oil field application, and is especially suitable for tertiary oil recovery operation under high-temperature and high-salt oil reservoir conditions.

The invention relates to the technical field of papermaking, in particular to a preparation method of ultrathin high-strength paper-based adhesive tape base paper. The preparation method comprises the following steps: mixing softwood pulp and hardwood pulp, forming base paper by adopting a double-net dehydration process, and forming a covalent cross-linked network in a paper sheet by adopting a cellulose reactive coupling agent with an o-benzoquinone structure and a multi-sulfydryl compound based on a sulfydryl-benzoquinone click chemistry and interface supramolecular assembly multi-bonding enhancement system; meanwhile, a dual intelligent enhancement system based on a biomacromolecule self-assembly body and a dynamic metal coordination network is established, and dynamic reversible crosslinking is constructed through a polyelectrolyte compound and a Fe < 3 + >-tannic acid coordination network; a multifunctional surface treatment technology combining a zwitterionic polymer brush and bionic in-situ mineralization is developed, a sulphobetaine methacrylate polymer brush grows through a surface-initiated atom transfer radical polymerization method, amorphous silicon dioxide is induced to be mineralized, and the adhesive tape body paper prepared through the method is high in strength.

The application belongs to the field of gas separation membrane preparation, and discloses a polyimide hollow fiber membrane with a polyionic liquid side chain structure and a preparation method and application thereof. The polyimide hollow fiber membrane with the polyionic liquid side chain structure comprises an aromatic polyimide main chain containing alkyl and a vinyl polyionic liquid side chain. The polyionic liquid fragment is fixed on the aromatic polyimide main chain by using an atom transfer radical polymerization reaction, and the active H on the imidazole ring in the polyionic liquid has a strong interaction with CO2 and other polar gases, so that high selective and rapid transportation of CO2 can be realized, and the permeation performance of the membrane to CO2 and other polar gases is improved. The obtained hollow fiber membrane has good heat resistance and mechanical properties, can treat flue gas at a high temperature and a high pressure, and improves production efficiency.

The invention discloses a preparation and application method of a dual-responsiveness perfume microcapsule for cigarettes, which adopts a simple, low-cost and high-efficiency electron transfer catalytic regeneration atom transfer radical polymerization (ARGET ATPR) method, takes natural plant essential oil as a core material, takes modified chitosan derivatives and polymethylacrylic acid N, N-dimethylaminoethyl ester (PDMAEMA) as wall materials, and adopts a one-step method to prepare the dual-responsiveness perfume microcapsule for the cigarettes. The prepared plant essential oil loaded perfume microcapsule is uniform in shape and size, compact in structure, high in mechanical strength, large in perfume loading amount, high in encapsulation efficiency, high in stability in a normal-temperature environment and long in perfume retention time, and can quickly respond and release weak acid gas generated by cigarette combustion and in a high-temperature environment; the spice microcapsule is added into cigarette tobacco shreds in a spraying or direct mixing mode, the sensory quality of cigarettes can be remarkably improved during combustion, offensive odor is reduced, irritation is reduced, aftertaste is improved, the cigarettes are endowed with unique plant source characteristic aroma, and smoking experience is richer and more diversified.

The invention relates to a quartz harmonic oscillator surface metallization method based on an atom transfer radical polymerization method. The method comprises the following steps: firstly, carrying out surface cleaning and hydroxylation on a quartz substrate; then immersing the quartz substrate into a toluene solution of (3-aminopropyl) triethoxysilane, continuously reacting, immersing the quartz substrate into anhydrous tetrahydrofuran or dichloromethane, and adding an acid absorbent for reacting; mixing the quartz substrate with a monomer with a metal coordination functional group, a catalyst, a ligand and a solvent, and carrying out polymerization reaction; after polymerization, immersing the quartz substrate into a metal salt solution for metal ion adsorption; and taking out, cleaning, reducing and annealing to obtain a pure quartz surface metal layer. According to the method, the absolutely uniform polymer template can be formed on a workpiece with a complex three-dimensional curved surface macroscopically through microcosmic quartz surface modification of the polymer and a dipping-metal reduction method, then uniform atomic layer scale metal deposition is achieved, and extremely high uniformity and shape preserving performance are achieved.

The invention discloses an aggregation-induced emission photocatalyst as well as a preparation method and application thereof, and belongs to the technical field of preparation of compounds. The structural formula of the aggregation-induced emission photocatalyst is as shown in formula I, wherein R1 is F or Cl; r2 is a diphenylamino group, a substituted diphenylamino group, a triphenylamino group or a substituted triphenylamino group; and R3 is Br, a substituted diphenylamino group, a triphenylamino group or a substituted triphenylamino group. The photocatalyst has visible light absorption, aggregation enhanced luminescence and reduction activity. According to the preparation method, a 4, 7-dibromobenzothiadiazole derivative and aromatic amine are subjected to Buchwald or Suzuki reaction, and the condition is mild. The catalyst is used for metal-free light-operated atom transfer radical polymerization, can efficiently catalyze the polymerization of acrylate monomers under the irradiation of a blue light or green light LED with a low dosage of 5-100 ppm, realizes high conversion rate, narrow distribution and block synthesis, is suitable for an aqueous phase system, and has good biocompatibility and large-scale prospects.

The invention provides a preparation method of a negatively charged polytetrafluoroethylene membrane, the negatively charged polytetrafluoroethylene membrane and application of the negatively charged polytetrafluoroethylene membrane, and relates to the technical field of membrane materials. The preparation method of the negatively charged polytetrafluoroethylene membrane comprises the following steps: putting a polytetrafluoroethylene membrane into an alcohol solution containing a siloxane coupling agent, and carrying out first soaking treatment; placing the treated polytetrafluoroethylene film in an acidic aqueous solution, and carrying out secondary soaking treatment to complete hydrolysis primary dehydration condensation; carrying out drying treatment on the treated polytetrafluoroethylene film to finish deep dehydration condensation; the preparation method comprises the following steps: bonding an atom transfer radical polymerization initiation site on the surface of a polytetrafluoroethylene membrane, activating a regenerated catalyst through electron transfer, carrying out atom transfer radical polymerization reaction, and grafting a negatively charged hydrophilic monomer on the surface of the polytetrafluoroethylene membrane with the initiation site to obtain the negatively charged polytetrafluoroethylene membrane. The negatively charged polytetrafluoroethylene membrane disclosed by the invention has excellent hydrophilicity and charge long-term effect.

The application discloses modified cotton fabric and a preparation method and application thereof, and relates to the field of textile fabrics.In the preparation of the modified cotton fabric, chitosan is pretreated by 2-bromoisobutyryl bromide, then acrylic acid and methyl acrylate are grafted and polymerized by an atom transfer radical polymerization method to obtain pre-modified chitosan, then the pre-modified chitosan is sequentially reacted with oxalyl chloride and 4-hydroxybenzotriazole to prepare modified chitosan; cotton fabric is ultrasonically pretreated by a sodium dodecyl sulfate solution, then sequentially reacts with 6-chlorohexanoyl chloride and N,N-dimethylallylamine to prepare pre-modified cotton fabric, and finally, the pre-modified cotton fabric is reacted with a modified liquid prepared from modified chitosan, dimethyl phosphite and 1,4-butanediol to prepare the modified cotton fabric.The modified cotton fabric prepared by the application has excellent ultraviolet resistance, antibacterial property, wrinkle resistance and flame retardance.

The invention relates to the technical field of engineering plastics, in particular to a preparation method of ABS (Acrylonitrile Butadiene Styrene) rubber powder and a transparent resin composition. The preparation method of the ABS rubber powder comprises the following steps: selecting a proper amount of halogenated carboxylic ester as an initiator, promoting butadiene to generate atom transfer radical polymerization, preparing polybutadiene halide with narrower molecular weight distribution, and then preparing the ABS rubber powder by taking the polybutadiene halide as the initiator. According to the present invention, the rubber phase is subjected to atom transfer radical polymerization with styrene, acrylonitrile and methyl methacrylate, such that the molecular weight of the copolymer can be easily controlled so as to reduce the haze of the resin composition and increase the light transmittance, and the uniform rubber phase particle size distribution enables the resin composition to absorb more energy when the resin composition is impacted so as to improve the light transmittance of the resin composition; the impact resistance is improved.

A separator for lithium-ion batteries and a modification method. The modification method comprises: using anisole as a solvent, octakis(chloropropyl)silsesquioxane as an initiator, methyl methacrylate as a monomer, cuprous chloride as a catalyst, and pentamethyldiethylenetriamine as a ligand, and synthesizing polymethacrylate-polyhedral oligomeric silsesquioxane by means of an atom transfer radical polymerization method; preparing a modified slurry from the polymethacrylate-polyhedral oligomeric silsesquioxane; and coating a surface of a base film of a separator with the modified slurry and drying same, so as to obtain a separator coated with polymethacrylate-polyhedral oligomeric silsesquioxane. The improved technique not only achieves significant effects in terms of improving the mechanical properties and thermal stability of a separator, but also realizes the optimization of cost efficiency and supply stability while maintaining good electrolyte wettability and reducing the internal resistance of a battery cell, thereby exhibiting potential in a wide range of applications.

The application discloses marine nano antifouling paint and a preparation method thereof, relates to the technical field of marine paint, and comprises the following steps: preparing an atom transfer radical polymerization initiator anchoring zinc oxide; preparing a multifunctional nano antifouling intermediate; and preparing and curing the marine nano antifouling paint. The antifouling intermediate is permanently locked in the coating through a chemical bonding strategy, long-acting and non-toxic antifouling effects are realized, and the mechanical performance and stability of the coating are improved.

The invention belongs to the field of membrane separation technology and bioengineering, and particularly relates to an anti-pollution composite nanofiber membrane for high-precision and high-flux separation of protein and a preparation method of the anti-pollution composite nanofiber membrane. According to the separation membrane, a hydrophilic polymer and zwitterionic polymer blended nanofiber membrane prepared through electrostatic spinning serves as a base material, zwitterionic polymers are grafted to the surfaces of fibers through the surface-initiated atom transfer radical polymerization (ATRP) technology, and a separation functional layer with excellent anti-pollution performance is formed. According to the invention, non-specific adsorption of protein and membrane pollution are effectively inhibited by constructing a high-density hydration layer, and the membrane has high porosity and high connectivity of a nanofiber-based membrane and super-hydrophilic and anti-pollution characteristics of a zwitterionic layer at the same time. The composite membrane has high selectivity, high rejection rate and excellent cycling stability on target protein in complex biological samples (such as serum, cell lysis buffer and fermentation liquor), and solves the problems that a traditional polymer membrane is easy to pollute, low in efficiency and poor in precision in protein separation.

The application belongs to the field of organic photoelectric materials, and particularly relates to a hot-exciton type scintillator molecule with photocatalysis and radiation-induced luminescence, and a preparation method and application thereof. The hot-exciton type scintillator molecule has a D-A-D structure, a heavy atom effect and a hot-exciton luminescence mechanism, and has a photocatalysis function. The plastic scintillator screen can be prepared through photocatalytic atom transfer radical polymerization, and the two functions of photocatalysis and scintillator are organically combined, so that a new way is provided for preparing the plastic scintillator screen.

This invention belongs to the field of semiconductor manufacturing and microelectronic chemicals technology, and relates to a nitrogen-containing heterocyclic hyperbranched acrylate cleaning dispersant for wafer fabrication processes, its preparation method, and its application. The dispersant is a hyperbranched polymer with the general formula Core-[P(MA)-Linker-NHet], where Core is the hyperbranched core, P(MA) is the poly(meth)acrylate branch, Linker is the connecting arm, and NHet is the nitrogen-containing heterocyclic functional group. The preparation method employs a combination of "core-first, arm-later" atom transfer radical polymerization or reversible addition-fragmentation chain transfer polymerization with click chemistry. This dispersant is applied to wafer wet cleaning solutions, and the cleaning method includes treating the wafer with a cleaning solution containing this dispersant. This invention's dispersant, through its unique molecular structure design, improves cleaning efficiency, exhibits excellent pattern protection and low damage, superior process compatibility, and high cleanliness, providing an effective solution to the cleaning challenges of advanced processes.

The invention belongs to the technical field of high polymer materials, and particularly relates to a random copolymer and a preparation method and application thereof, a modified organic film and a preparation method and a low-temperature bonding method thereof. The random copolymer provided by the invention is formed by a monomer A and a monomer B through atom transfer radical polymerization; the surface energy of the monomer B is lower than that of the monomer A, and the molar weight of the monomer B accounts for 5-12% of the total molar weight of the monomer A and the monomer B. When the random copolymer is used as a surface modifier to modify the organic film, the monomer B component can be adsorbed on the surface of the organic film under the action of heat treatment, and the random copolymer is driven to be enriched on the surface of the organic film and form a flat chain ring conformation, so that the bonding strength between high polymer materials (modified organic film) is effectively enhanced.

This invention belongs to the field of new materials and polymer materials, and relates to an in-situ ATRP-initiated organic / inorganic hybrid anion exchange membrane and its preparation method. The specific steps are as follows: using brominated carbon nanotubes as an initiator, the atom transfer radical polymerization of N,N-dimethylaminomethyl methacrylate is initiated; further, a quaternary ammonium functional ion is added through a Mensutkin reaction with a methylating agent, thereby obtaining an organic / inorganic hybrid anion exchange membrane material initiated by in-situ atom transfer radical polymerization (ATRP). The anion exchange membrane material prepared by this invention possesses both ionic conductivity and dimensional stability, exhibiting excellent performance in alkaline water electrolysis and fuel cells, and can also be used in anion dialysis, etc. This invention is simple and easy to implement, the raw materials can be industrially produced, and it has broad application prospects.

The application discloses a method for adjusting process parameters in an atom transfer radical polymerization process. The method is based on an orthogonal configuration method, divides an infinite chain length into finite elements and orthogonal configuration points, reconstructs a micro quality index of the process, directly solves the micro quality, and then adjusts parameters based on a micro quality model to provide effective guidance for experiments and production. The method includes a chain length discretization method, a micro quality reconstruction algorithm, an adaptive initialization algorithm and a parameter adjustment algorithm. Compared with a traditional parameter adjustment method, the method can directly solve the micro quality index, thereby guiding the parameter adjustment, and is beneficial to simulation, optimization and operation design of polymer production.