22 results about "Synthetic monomer" patented technology

The invention discloses a copper oxide modified bismuth vanadate photocatalyst as well as a preparation method and application thereof, and belongs to the technical field of photocatalytic reduction of carbon dioxide. The method comprises the following steps: synthesizing a BiVO4 monomer through a hydrothermal method, then mixing and stirring the BiVO4 monomer and a Cu-MOF precursor solution, carrying out electrostatic adsorption compounding, then carrying out calcination treatment to convert Cu-MOF into CuO, loading the CuO on the surface of BiVO4, forming a p-n heterojunction, and preparing the CuO / BiVO4 composite photocatalyst. According to the catalyst, separation of photon-generated carriers is effectively promoted by constructing a heterojunction, the CO2 adsorption and activation capacity is enhanced, and the CO2 photocatalytic reduction performance is remarkably improved; experiments show that the CO yield of the prepared catalyst reaches 36.77 [mu] mol.g <-1 >. H <-1 > in a reaction for 5 hours, which is about 5.7 times that of pure BiVO4, and the catalyst has good stability; the method is simple in process, low in cost and suitable for efficient photocatalytic reduction of CO2 to prepare fuel.

The invention provides halogen-free flame-retardant liquid epoxy resin, solid epoxy resin for powder coating and a preparation method of the solid epoxy resin, and belongs to the technical field of powder coating. The liquid epoxy resin disclosed by the invention is prepared by polymerizing 2, 4-diamino-6-phenyl-1, 3, 5-triazine, formaldehyde, triethyl phosphite, epoxy chloropropane, sodium hydroxide, DMF (Dimethyl Formamide) and the like. The contents of halogen-free flame-retardant elements nitrogen and phosphorus in the product are high, a solid epoxy resin product obtained by carrying out chain extension on liquid epoxy resin serving as a synthetic monomer of solid epoxy resin of the powder coating and bisphenol F is good in flame retardance, the oxygen index reaches 37% or above, and the flame retardance is high. A coating film obtained after the powder coating and an accelerated dicyandiamide curing agent are subjected to low-temperature rapid curing (150 DEG C / 10 min) is high in gloss and leveling grade and good in impact resistance, hardness and the like, and the application requirements of the powder coating are met.

The application relates to the technical field of computer-aided design of high polymer materials, and discloses a polyimide molecular structure generation method and device based on monomer combination, which comprises the following steps: constructing a synthesizable monomer database; constructing a molecular performance prediction model; generating a target polyimide structure based on Monte Carlo tree search; and outputting a candidate scheme. The device corresponds to the method. According to the application, the chemical search space is controlled within a reasonable and operable range by limiting the basic construction monomer; the actual synthesizability of the generated structure is guaranteed from the source by combining the commercially available or known synthesizable monomers; and the intelligent algorithm is used to systematically explore the monomer combination space, so that the discovery efficiency of novel high-performance polyimide materials is significantly improved.

The invention relates to a method for continuously producing poly (p-dioxanone), which comprises the following steps: premixing glycollic acid or a glycollic acid derivative with a ring formation catalyst, and introducing the obtained mixed material and ethylene oxide into a synthesis reaction kettle for reaction; separating and purifying the obtained reaction product, introducing the obtained purified monomer into a polymerization reaction kettle, and adding a polymerization catalyst for polymerization; after polymerization is finished, discharging is conducted, residual materials in the polymerization reaction kettle are subjected to depolymerization treatment to clean the kettle body, after depolymerization is finished, depolymerization products generated in the depolymerization treatment process are discharged, the kettle does not need to be opened for cleaning, and the next round of polymerization production is directly conducted. According to the method disclosed by the invention, the steps of synthesizing the p-dioxanone monomer, separating and purifying the monomer, catalyzing and polymerizing, depolymerizing and cleaning the kettle body and the like are continuously carried out, so that the continuous production of the poly (p-dioxanone) is realized, the side reaction of oligomerization and degradation of the p-dioxanone in storage and transportation can be avoided, and the production cost of the poly (p-dioxanone) is obviously reduced.

The invention relates to the technical field of computer-aided design of high polymer materials, and discloses a monomer combination-based polyimide molecular structure generation method and device, and the method comprises the following steps: constructing a synthesizable monomer database; constructing a molecular performance prediction model; generating a target polyimide structure based on Monte Carlo tree search; and outputting the candidate scheme. The device corresponds to the method. According to the application, the chemical search space is controlled within a reasonable and operable range by limiting the basic construction monomers; combination is carried out based on commercially available or known synthesizable monomers, and the practical synthesizability of the generated structure is guaranteed from the source; the monomer combination space is systematically explored by using an intelligent algorithm, and the discovery efficiency of the novel high-performance polyimide material is remarkably improved.

The application discloses a preparation method of a two-dimensional supramolecular polymer based on cation-pi interaction co-assembly, and relates to the technical field of supramolecular polymer materials. + As a cationic unit, a monomer molecule 4,4',4''-(3,7,11-trimethyltriphenylene-2,6,10-triyl)tris(N-dodecylbenzamide) is synthesized as a pi unit, and then the cationic unit and the pi unit are co-assembled to form a two-dimensional supramolecular polymer based on cation-pi interaction co-assembly. The prepared two-dimensional supramolecular polymer has fluorescence color change characteristics and photocatalytic hydrogen evolution performance, further widens the force category of two-dimensional supramolecular materials, and provides a new strategy for the preparation of two-dimensional supramolecular materials and the application of the two-dimensional supramolecular materials in the fields of fluorescence sensing, fluorescence anti-counterfeiting and photocatalytic hydrogen evolution.

According to the environment-friendly filtrate reducer for the high-density water-based drilling fluid and the preparation method of the environment-friendly filtrate reducer, a biodegradable natural polymer is used as a rigid framework, a synthetic monomer side chain with strong adsorption, temperature resistance and salt tolerance characteristics is introduced through graft copolymerization, and an environment-friendly cross-linking agent is adopted to construct a proper three-dimensional network structure. According to the design, the product not only inherits the advantages of good tackifying property, environmental protection and no toxicity of natural macromolecules, but also endows the synthesized polymer with excellent temperature resistance, salt resistance and adsorption performance. A three-dimensional network in product molecules can efficiently bind free water, and the viscosity of drilling fluid filtrate is remarkably improved, so that the three-dimensional network has a synergistic effect with a compact filter cake, and an excellent filtrate loss reduction effect is realized; and a plurality of polar groups contained in the plugging agent can strengthen plugging and inhibition on the well wall and improve the stability of the well wall. The whole preparation process is mild in condition, complex equipment is not needed, the used raw materials are green and environment-friendly, and the final product is low in biotoxicity, easy to degrade, excellent in comprehensive performance and controllable in cost.

The invention discloses a preparation method of a rhodium cluster catalyst and a method for catalyzing olefin hydroformylation by using the rhodium cluster catalyst. The preparation method comprises the following steps: firstly, synthesizing a monomer material CTP-6-CHO; then, a certain amount of CTP-6-CHO and p-phenylenediamine are subjected to a self-assembly reaction, and an organic framework material QTD-COF is prepared; then, the prepared QTD-COF is roasted in an Ar atmosphere, and an N and P double-doped carbon-based material (P-NC) is prepared; finally, the P-NC is used as a carrier material, RhCl3. 3H2O is impregnated and adsorbed, high-temperature reduction is conducted in the H2 / Ar atmosphere, and the rhodium cluster supported catalyst Rh / P-NC is prepared. In the hydroformylation reaction of olefin, an Rh / P-NC catalyst and an olefin substrate are added into a high-pressure reaction kettle, a CO / H2 mixed gas (V: V, 1: 1) is introduced, the reaction is performed for 4-12 hours at 100-140 DEG C, the olefin conversion rate is as high as 99.9%, the yield of aldehyde compounds is as high as 97.4%, and the catalyst can be recycled for 10 times and still keeps activity. According to the method, the preparation method of the Rh / P-NC catalyst is simple, Rh clusters are anchored on the surface of a P-NC carrier in a high-dispersion mode, rich catalytic hydroformylation active sites can be provided, and the utilization rate of Rh metal atoms is effectively increased.

The embodiment of the invention discloses polyacrylate and a preparation method thereof, a glue solution and a UV (ultraviolet) viscosity-reducing film. Synthetic monomers of the polyacrylate comprise a soft monomer and a hard monomer, wherein the soft monomer comprises a first soft monomer, the structural formula of the first soft monomer is shown in the specification, R1 is hydrogen or methyl, when R1 is methyl, R2 is straight-chain or branched-chain alkyl with the number of carbon atoms being 8-20, and when R1 is hydrogen, R2 is branched-chain alkyl with the number of carbon atoms being smaller than or equal to 4 or straight-chain or branched-chain alkyl with the number of carbon atoms being 8-20; and / or the hard monomer comprises one or more of a first hard monomer and acrylonitrile, the structural formula of the first hard monomer is shown in the specification, R3 is hydrogen or methyl, when R3 is methyl, R4 is branched chain alkyl with the carbon atom number of 4 or an organic group with the carbon atom number of 5-10 and containing a cyclic structure, and when R3 is hydrogen, R4 is the organic group with the carbon atom number of 5-10 and containing the cyclic structure. The soft monomer and the hard monomer adopted in the invention can improve the plating solution resistance of the synthesized polyacrylate.

The embodiment of the invention discloses polyacrylate resin, a protective film as well as a preparation method and application of the protective film. Synthetic raw materials of the polyacrylate resin comprise a synthetic monomer, a solvent and an initiator, and the synthetic monomer comprises a monomer containing a cyclic structure and an acrylate monomer with an ester group containing a branched chain structure; based on the total mass of the synthetic monomers, the mass ratio of the monomer containing the cyclic structure is 2wt%-10wt%, and the mass ratio of the acrylate monomer with the ester group containing the branched chain structure is 5wt%-50wt%. According to the invention, a synthetic monomer containing a monomer containing a cyclic structure and an acrylate monomer with an ester group containing a branched-chain structure is subjected to a polymerization reaction in a solvent under the initiation of an initiator, so that the polyacrylic resin is obtained due to the effective ratio of the monomer containing the cyclic structure to the acrylate monomer with the ester group containing the branched-chain structure; the degree of polymerization reaction and the content of a cyclic structure in the polyacrylic resin are controlled, so that the heat resistance and hydrophobicity of the polyacrylic resin are improved; when the polyacrylic resin is used for preparing the protective film, the heat and humidity resistance and plating solution resistance of the protective film can be improved.

The present invention concerns a process for utilizing at least one waste stream from a production plant for aqueous polymer dispersions from at least one type of monomer M, in which reaction residues are separated from water. Said reaction residues are optionally converted into a pyrolysis oil by a pyrolysis process, which pyrolysis oil is then converted by a gasification process into synthesis gas or said separated reaction residues as such are converted into synthesis gas by a gasification process. The synthesis gas may be used for synthesis of monomers M. The present invention further concerns a production plant for aqueous polymer dispersions comprising an integrated reaction residue treatment facility which is suited for said process.

The application discloses a high-temperature-resistant and salt-resistant polymer additive for oil drilling, which is prepared by the following method: S1, carrying out nucleophilic addition on ferrocene formaldehyde and 5-amino-2-chlorobenzoic acid; S2, adding a reducing agent to the system to reduce the intermediate 1; S3, adding a catalyst to carry out aromatic nucleophilic substitution reaction under the condition of strong base and high temperature; S4, finally, carrying out esterification reaction with methacryloyl chloride; and S5, carrying out reaction on the synthetic monomer, acrylamide monomer and alkenyl monomer to obtain the polymer. The application introduces the amphiphilic macromolecular benzene ring into the main chain by reasonably controlling the process, so that the prepared additive has the advantages of less by-product, stable performance, good filtration loss reduction effect, excellent temperature resistance and salt resistance.

The invention discloses a polyester chip for an LCD (Liquid Crystal Display) optical base film and a preparation method of the polyester chip. The polyester chip is prepared by adopting a semi-continuous production process. Terephthalic acid and ethylene glycol are added in the primary esterification reaction to serve as two synthetic monomers of polyester chips, and a bis (2-hydroxyethyl) terephthalate intermediate is synthesized preliminarily. Ethylene glycol, the pretreated glass beads, a dispersing agent and auxiliary materials are added in the secondary esterification reaction, and slurry is formed through uniform stirring. And introducing the intermediate generated by the primary esterification reaction into the secondary esterification reaction. And after the reaction system is stable, introducing reactants into a polycondensation reaction kettle through a melt filter, so that the reactants continuously react under the conditions of high temperature and high vacuum. And when the molecular chain is increased to a certain degree, granulating and drying the high-temperature melt. The polyester film produced by using the polyester chip has the universal characteristics of high strength, good toughness, chemical corrosion resistance, water resistance, oxygen resistance and the like, and also has the advantages of high gloss and high light transmittance.

The application discloses an acid pH response type hydrogel co-loaded biochar loaded nano zero-valent iron material and a preparation method and application thereof, and belongs to the technical field of water pollution treatment. The nano zero-valent iron is loaded on the biochar, the dispersibility of the nano zero-valent iron is improved, and the reactivity of the nano zero-valent iron is prevented from being reduced due to agglomeration. An acid pH response type hydrogel is prepared, the biochar loaded nano zero-valent iron is coated inside under neutral and alkaline conditions, and the premature contact between the nano zero-valent iron and the water body is prevented, so that passivation is reduced and the activity is lowered. Under acid conditions, the tertiary amine group of the monomer is protonated into a positively charged quaternary ammonium salt group, strong electrostatic repulsion is generated, the polymer chain is stretched, the hydrogel shell is swelled to release the activated carbon loaded nano zero-valent iron material, the reduction effect of the activated carbon loaded nano zero-valent iron material is fully exerted, the removal of hexavalent chromium in the water body is realized, the generation of residual sludge is effectively reduced, and secondary pollution is reduced.

The application discloses a kind of preparation biological base leather by fungi fruit body combined in-situ reaction, belong to biological base material technical field.The preparation of biological base leather of the application includes: fungi fruit body is carried out in-situ reaction under the action of propylene lactone and catalyst, forms surface modified fungi fruit body, drying, pulverization, and obtains modified fungi fruit body micro powder;Then again with with polyurethane synthetic monomer solution, modified cellulose is mixed, and stirred reaction;After the solution of reaction is drawn, solvent is removed, and dried, and leather base is prepared;Leather base is according to the processing method of conventional microfiber leather, and is polished, veneered, embossed, and prepared biological base leather finished product.The preparation process of the method is small to environmental pollution, and the finished product leather prepared has excellent mechanical properties, and also has good biodegradability, and the product has application value in fashion field, luggage, household, clothing decoration and the like.

The application relates to the technical field of pressure-sensitive adhesive, in particular to a pressure-sensitive adhesive applied to an anti-dazzle type polarizer protective film, a protective film and a preparation method thereof. The pressure-sensitive adhesive of the protective film is a polyurethane modified acrylic polymer, which comprises an acrylic ester polymerized from an acrylic monomer and a curing agent, the acrylic ester synthetic monomer comprises a long-chain ether bond monomer containing a polyether structure repeatable unit, and the number of the repeatable units is greater than or equal to 2. The pressure-sensitive adhesive has excellent initial adhesion and holding adhesion, and the protective film prepared from the pressure-sensitive adhesive can be better attached to the low-polarity surface of the anti-dazzle type polarizer, and has excellent wetting performance on the anti-dazzle type polarizer. In addition, the polyurethane modified acrylic polymer also provides the protective film with good weather resistance, oxidation resistance and ultraviolet resistance, and the protective film of the application has no precipitation and no color difference after aging under the conditions of moisture permeability, high temperature and cold-heat impact, and has excellent performance.

The application discloses a covalent organic framework material, a solid-phase microextraction probe and a preparation method and application thereof, and relates to the technical field of material preparation and component detection. The application adopts 3,3'-dihydroxydiphenylamine and 1,3,6,8-tetra(4-formaldehyde phenyl) perylene as synthetic monomers, and synthesizes Py-DHBD-COF through a solvothermal method. The synthetic material is coated on the surface of an acid-etched stainless steel wire through polyacrylonitrile glue, and a solid-phase microextraction probe modified with a Py-DHBD-COF coating is prepared. The Py-DHBD-COF coating forms hydrogen bonds, pi-pi stacking and hydrophobic interaction with psychotropic drugs through its pi conjugated system, imine bonds and hydroxyl groups, so that efficient and selective adsorption of various psychotropic drugs is realized. In combination with HPLC-MS / MS technology, the probe shows high sensitivity, a wide linear range and good precision in the detection of three kinds of psychotropic drugs.

Disclosed in the present application is a preparation method for a low-disorder expanded π-conjugated organic material. In the present application, commercial tetraaminobenzoquinone is used as a synthetic monomer, a hydrochloric acid solution is added, ultrasonic dispersion is performed, and sodium acetate is then added to obtain a turbid solution II; then, the turbid solution II is heated and stirred in flowing oxygen, and is then washed and dried; the resulting powder is put into dimethyl sulfoxide to obtain a turbid solution III; and then, the turbid solution III is subjected to aeration drying at a high temperature, and is then washed with ethanol, filtered, and dried in vacuum, so as to obtain a low-disorder expanded π-conjugated organic material. The organic material of the present application can expose more active sites and has a more open framework structure, such that the diffusion paths of potassium ions are reduced, the capacity and rate capability of TAPT can be significantly improved, and the problem of the capacity, the cycling stability and the ionic conductivity being difficult to improve at the same time when the organic electrode material is applied to a potassium-ion battery is solved. The preparation method of the present application has high cost efficiency, is simple, convenient and environment-friendly in terms of the preparation process, and is suitable for a wide range of applications. The organic material has good electrochemical performance.

The invention relates to a superfine dispersed illite composite polyacrylic resin emulsion and a preparation method thereof, and belongs to the technical field of fine chemical engineering. The illite is a common clay mineral and has unique structure and performance. According to the characteristics, the invention aims to develop a novel material with specific performance. Firstly, organic illite is obtained through a chemical intercalation method and a surface modification method; a specific acrylic resin monomer is selected for dispersion. And then adding a silane coupling agent to obtain the compound dispersion containing the ultrafine dispersed illite and the acrylic resin monomer. And finally, synthesizing the emulsion by taking the compound dispersion as one of synthetic monomers and adopting a general synthesis method. According to the invention, the problem of non-uniform dispersion of illite in the acrylic resin emulsion is solved, the dispersion uniformity and storage stability of the emulsion are improved, and a new thought and method are provided for preparing a high-performance composite resin emulsion material.

The invention relates to the technical field of polyester materials, and discloses an optical-grade heat-resistant modified PETG material and a preparation method thereof. The modified PETG material comprises a copolymer base material, the synthetic monomers of the copolymer base material comprise a PETG synthetic monomer, a modified monomer A and a modified monomer B; by introducing the special modified monomer, the heat resistance, the light transmittance and the refractive index of the modified PETG material can be effectively improved by utilizing the characteristics of the molecular structure of the modified monomer.

The invention discloses a sulfonated polyaryletherketone proton exchange membrane and a preparation method thereof, and belongs to the technical field of fuel cells, and the method comprises the following steps: synthesizing a BDHPM monomer, carrying out polycondensation, bromination, phosphonic acid grafting and sulfonation to obtain PhSPAEK-x, carrying out composite membrane casting with 2-methylimidazole, annealing, and carrying out sulfuric acid protonation and strong phosphoric acid doping to prepare a PA / MeIm-PhSPAEK-x membrane. According to the membrane, PhSPAEK-x is used as a matrix, imidazole and phosphoric acid are compounded, a phosphoric acid pool is formed inside, the maximum power density is larger than or equal to 118 mWcm <-2 > under 130 DEG C / 20% RH, the maximum power density is larger than or equal to 487 mWcm <-2 > under 80 DEG C / complete humidification, the phosphoric acid retention rate is larger than or equal to 50%, and the thermal decomposition temperature is gt; the temperature is 400 DEG C; the membrane is simple in preparation process, low in cost and free of fluorine pollution, can replace a Nafion membrane and is suitable for proton exchange membrane fuel cells.

The invention provides a preparation method of a polyurethane chloropropene emulsion with a core-shell structure, and belongs to the technical field of emulsion synthesis. According to the method, polycarbonate diol and isophorone diisocyanate are used as core PU synthetic monomers, chloropropene and acrylate are used as shell chloropropene polymer synthetic monomers, the core-shell structure polyurethane chloropropene emulsion with a hard-inside and soft-outside structure is synthesized, and the technical problem that the adhesive force is poor after a PP plastic water-based paint emulsion forms a film is solved. The polyurethane chloropropene emulsion with the core-shell structure, prepared by the method disclosed by the invention, is high in solid content, low in viscosity, uniform in particle size distribution and strong in film-forming adhesive force with PP (Polypropylene) plastic.