14 results about "Ethanedithiol" patented technology

The invention relates to a bis (2, 2-methylene disulfide) episulfide compound with an ultrahigh refractive index and a preparation method thereof, and belongs to the technical field of optical materials, and the preparation method comprises the following preparation steps: taking chloroacetaldehyde dimethyl acetal, a solvent, disulfur dichloride and an acidifying agent, and carrying out a sulfuration substitution reaction to prepare 2-chloro-1, 2-dithiol; the preparation method comprises the following steps: carrying out nucleophilic substitution reaction on methoxycarbonyl sulfonyl chloride, a low-boiling-point solvent and 2-chloro-1, 2-ethanedithiol, and dropwise adding a bicarbonate saturated aqueous solution to carry out cyclization reaction so as to prepare a methoxycarbonyl disulfide-episulfide compound; and adding dimercaptomercaptan, and reacting to obtain a product. The process route provided by the invention solves the problems of tedious step-by-step reaction, more byproducts and high cost in the prior art.

The invention relates to cyclotrithio-tri (2-mercaptoethylthio) mercaptan as shown in a formula I and a preparation method and application thereof. A two-step method of thio reaction and nucleophilic substitution is adopted. In the step I, thiourea is used as a sulfur source, epoxy atoms in trioxymethylene are replaced by sulfur atoms one by one under the condition of strong acid, and 1, 3, 5-trithiacyclohexane is generated. In the nucleophilic reaction of acid catalytic activation in the step II, 1, 3, 5-trithioxane and Lewis acid are subjected to coordination complexation firstly, one sulfydryl in dithiol serves as a nucleophilic reagent to attack an electrophilic carbon center of a ring-opening intermediate, a new C-S bond is formed, and a linear intermediate containing sulfydryl is generated; according to the process, three thiol groups are introduced in sequence step by step, and sulfur alkylation substitution is completed. The obtained product has the characteristics of high purity, high light transmittance and large refractive index, and can be used for preparing optical materials with ultrahigh refractive index and high light transmittance.

The application discloses a kind of synergistic antitumor porphyrin-based covalent organic framework heterojunction materials and preparation method thereof, belong to biological medicine technical field. 5,10,15,20-tetra (4-aminobenzene) -21H,23H-porphyrin and 2,5-divinyl benzene formaldehyde are added to organic solvent to carry out solvothermal reaction, and porphyrin-based covalent organic framework (pCOF) is obtained;pCOF is mixed with 1,2-ethanedithiol and heated to obtain thiolated modified pCOF;Thiolated modified pCOF is stirred with glutathione aqueous solution ultrasonically, then tetra-chloroauric acid is added to carry out reaction, and synergistic antitumor porphyrin-based covalent organic framework confined gold nanocluster heterojunction material, recorded as Au@pCOF, is obtained.The Au@pCOF prepared in the application can be used as a kind of biocompatible antitumor therapeutic agent, under the irradiation of 808 nm near-infrared light, active oxygen is efficiently generated and heat is released, photothermal and photodynamic synergistic enhancement is realized, tumor cells are significantly killed, and is used for space-time integration synergistic antitumor therapy.

The application relates to the technical field of paint, and particularly discloses a kind of nano-silver paint for low-temperature high-humidity thawing equipment and a preparation method thereof;Including the following steps: S1: with sodium oleate modified graphite loaded nano-silver wire, sodium oleate modified filler is obtained;S2: take acrylic acid, methyl methacrylate, methyl acrylate, allyl trimethyl ammonium chloride, hydroxyethyl methacrylate, styrene, butyl acrylate, di-tert-pentyl peroxide, vinyl silicone oil, sodium oleate modified filler, ethanedithiol, azobis isobutyronitrile, prepare nano-silver A;S3: take isocyanate group terminated polyurethane prepolymer as a template agent, prepare nano-silver B;S4: take polyurethane acrylate, polyacrylate, acetone, photoinitiator, nano-silver A, nano-silver B, mix evenly, get nano-silver paint.

The invention discloses a synthetic method of 1,2-disulfide ethane compounds and 1,4-dithiane, belongs to the field of organic synthesis technology, including S1, dissolving iodine in an organic solvent; S2, adding 1,4-dioxane and thiol or thiol compound R-SH or ethanedithiol to the solution of step S1, sealing, heating and stirring until the reaction is completed; S3, adding Na2S2O3 to the solution at the end of the S2 reaction to reduce the remaining I2; S4, extracting with dichloromethane, drying and concentrating the organic phase, and purifying the crude product by silica gel column chromatography to obtain a final product. The present invention uses 1,4-dioxane as "-CH2CH2-" precursor, and realizes the ring-opening substitution reaction of 1,4-dioxane under the synergistic effect of iodine and S-H bonds. The synthesis step of the reaction is simple, cost-effective, and the reaction process is safe.

The invention discloses a PbS-EDT quantum dot hole transport layer and a preparation method and application thereof, and the preparation method comprises the following steps: (1) preparing PbS-OA quantum dots into a PbS-OA quantum dot solution; the preparation method comprises the following steps: dissolving 1, 2-ethanedithiol in a mixed solvent composed of dichloromethane, isopropanol and acetonitrile to obtain a solution 1, dissolving PbCl2 in N, N-dimethylformamide (DMF) to obtain a solution 2, and adding the solution 2 into the solution 1 to obtain an exchange solution; (2) coating the PbS-OA quantum dot solution on a substrate to obtain a PbS-OA quantum dot layer; the PbS-OA quantum dot layer is coated with the PbS-EDT quantum dot hole transport layer, the PbS-OA quantum dot layer is fully paved with the exchange liquid, cleaning is carried out after ligand exchange is carried out, then the steps of PbS-OA quantum dot coating, full paving of the exchange liquid, ligand exchange and cleaning are repeated, and the PbS-EDT quantum dot hole transport layer is obtained.

The invention discloses a high-strength wear-resistant aramid yarn, a preparation method thereof and an aramid fabric, and relates to the technical field of textile fibers. When the high-strength wear-resistant aramid yarn is prepared, p-phenylenediamine, terephthaloyl chloride and 2-vinyl-4, 6-diamino-1, 3, 5-triazine are subjected to a reaction, and aramid is prepared; the preparation method comprises the following steps: sequentially reacting aramid fiber with (3-isocyanate propyl) dimethylamine and modified 2, 4-dihydroxybenzophenone to obtain modified aramid fiber; the preparation method comprises the following steps: sequentially reacting silicon dioxide with 3-(2, 3-epoxypropoxy) propyltrimethoxysilane and phosphoric acid di (hydroxyethyl acrylate) ester to prepare modified silicon dioxide; mixing the modified aramid fiber with the modified silicon dioxide, and performing wet spinning to obtain primary aramid fiber; the primary aramid fiber reacts with 1, 2-ethanedithiol and then is twisted to obtain the high-strength wear-resistant aramid fiber yarn. The prepared high-strength wear-resistant aramid yarn has good wear resistance, flame retardance, aging resistance and antibacterial performance.

The invention relates to a film-coated aluminum sheet for drilling and a preparation method of the film-coated aluminum sheet, and belongs to the technical field of composite materials. The film-coated aluminum sheet is composed of an aluminum substrate and a film-coated layer, wherein the film-coated layer is prepared from the following components in percentage by weight: 100 parts of modified acrylate oligomer, 18-26 parts of reactive diluent, 5.5-8 parts of ultramicro filler, 1.2-1.6 parts of wetting agent, 0.9-1.3 parts of defoaming agent and 0.5-0.8 part of flatting agent; the preparation method comprises the following steps: by taking a modified acrylate oligomer as a film-forming main material, carrying out amine-ester exchange on diallylamine and methyl trifluoroacetate to prepare an intermediate, carrying out click addition on dithiol and double bonds introduced into the intermediate under the initiation of ultraviolet radiation, and blocking by using hexamethylene diisocyanate to prepare a sulfo-matrix; finally, hydroxyethyl acrylate reacts with terminal isocyanate of a sulfo-matrix, a terminal acrylate structure with photocuring activity is grafted for modification, and the hole site precision and the hole wall quality are effectively improved through a film coating layer.

The invention relates to the field of all-solid-state lithium metal batteries, and discloses a composite polymer solid electrolyte as well as a preparation method and application thereof. The solid electrolyte comprises polyoxyethylene, a lithium salt and a dithiol ligand, the lithium salt is lithium bis (trifluoromethane sulfonimide); the general formula of the dithiol molecule is HS-(CH2) n-SH, and n is equal to 2, 4, 6, 8 or 10. The composite polymer solid electrolyte provided by the invention has good ionic conductivity, and can induce generation of a LiF-rich solid electrolyte interfacial film. 1, 2-ethanedithiol, LiTFSI and PEO are adopted to form a composite polymer solid electrolyte, lithium metal is used as a negative electrode, lithium iron phosphate is used as a positive electrode, the capacity retention ratio of the obtained all-solid-state lithium metal total battery is larger than or equal to 99% after 580 cycles under the 1C multiplying power, and the cycling stability and the multiplying power performance of the all-solid-state lithium metal total battery are remarkably improved.

The invention relates to a preparation method and system of 1, 2-dithiol, and belongs to the technical field of industrial synthesis. The preparation method of 1, 2-ethanedithiol provided by the invention comprises the following steps: S1, adding lewis acid into a solvent in an inert atmosphere, stirring, then heating and pressurizing, adding hydrogen sulfide and ethylene oxide at the same time, and reacting at 70-90 DEG C to obtain a mixed solution A; s2, performing steam stripping and normal-pressure rectification on the mixed solution to obtain a mixed solution B, and performing oil-water phase separation on the mixed solution B to obtain an oil-phase solution; and S3, carrying out reduced pressure rectification on the oil phase solution, and collecting fractions at 80-110 DEG C to obtain the 1, 2-dithiol. The preparation method of 1, 2-dithioglycol can realize reasonable utilization of hydrogen sulfide gas in waste gas of an oil refinery, is high in synthesis conversion rate and high in yield, can prepare high-purity 1, 2-dithioglycol, realizes resource reutilization, and is a great breakthrough and benefit for environmental protection and a new process.

The application discloses a preparation method of a heavy metal sewage treatment agent and relates to the technical field of sewage treatment. In the preparation of the heavy metal sewage treatment agent, zinc modified Fe3O4 microspheres, hydrochloric acid dopamine and polyethylene imine are reacted to obtain crosslinked PDA / PEI-Zn / Fe3O4; zirconium tetrachloride and p-aldehyde benzene acid are reacted to obtain a zirconium metal cluster; the crosslinked PDA / PEI-Zn / Fe3O4, the zirconium metal cluster and 1,4-diamino-2,5-divinyl benzene are step-by-step reacted to obtain COF-crosslinked PDA / PEI-Zn / Fe3O4; and the COF-crosslinked PDA / PEI-Zn / Fe3O4 is ultraviolet irradiated in a grafting solution composed of 1,2-ethanedithiol, 2,2-dimethoxy-2-phenyl phenylacetone and tetrahydrofuran to obtain the heavy metal sewage treatment agent. The heavy metal sewage treatment agent prepared by the application has excellent adsorption performance and stability, is convenient to recover and can be reused.

The invention relates to the technical field of proton exchange membranes, and provides a multi-element composite proton exchange membrane and a preparation method thereof. The invention relates to a multi-element composite proton exchange membrane which is prepared from perfluorinated sulfonic acid resin, 1, 2-ethanedithiol, fluorinated aluminum oxide and a surfactant, the tensile strength of the multi-element composite proton exchange membrane is 13.54 MPa or above, the proton conductivity is 0.184 mS cm <-1 > or above, and the mass loss rate is 4.92% or below after the multi-element composite proton exchange membrane is soaked in water at the temperature of 80 DEG C for 48 h. According to the technical scheme, the problems of low proton conductivity and poor stability when the proton exchange membrane is a single perfluorosulfonic acid membrane in the prior art are solved.

The invention discloses a modification method of a ZnO nano-particle film, the film and application, the modification method comprises the following steps: adding ethoxylated polyethyleneimine and 1, 2-ethanedithiol into a solvent to obtain a modification liquid; and coating the ZnO nano-particle film with the modification liquid, and carrying out annealing treatment to obtain the modified ZnO nano-particle film. The modification liquid containing ethoxylated polyethyleneimine and 1, 2-ethanedithiol is adopted to modify the ZnO nano-particle film, through the synergistic effect of PEIE and EDT, the hydrophilicity of the film can be effectively improved, the surface roughness of the film can be effectively reduced, oxygen vacancies of the film can be effectively filled, and in-gap state recombination is inhibited by adjusting the electronic state of sulfur atoms, so that the performance of the film is improved. Therefore, the comprehensive performance of the ZnO nano-particle film can be effectively improved.

This invention belongs to the field of porous organic materials technology, specifically relating to a covalent organic framework material, its preparation method, and its application. It is obtained by a high-temperature ammonia-aldehyde condensation reaction of 1,3,5-phenyltricarboxyhydrazide and 2,5-divinyl-1,4-phenylenedialdehyde, using azobisisobutyronitrile (AIBN) as an initiator, through the reaction of 1,2-ethylenedithiol and COF... BTH‑DVa The vinyl groups on the surface undergo a click reaction, achieving anchorage of thiol groups on the COF surface and the inner walls of the pores; wherein, COF BTH‑DVa The abundance of -N-N- sites and the post-modified thiol groups will endow SH-COF with... BTH‑DVa Multiple HMIs adsorption sites enable SH-COF BTH‑DVa The material exhibits excellent adsorption performance for HMIs, specifically in SH-COF. BTH‑DVa The material can realize the extraction of Pb from aqueous solution. 2+ It can remove efficiently and quickly.