12 results about "Radical formation" patented technology

The invention discloses a method for prolonging the service life of common free radicals and maintaining the chemical reaction activity of the free radicals by injecting or dissolving inert gas into a reaction system. The inert gas-free radical intermediate formed by inert gas molecules or atoms and free radicals prolongs the service life of the free radicals, and meanwhile, the high chemical activity of the free radicals in the inert gas-free radical intermediate is ensured by utilizing a full stable electronic structure of the inert gas, so that the reaction rate of multiphase and homogeneous reaction is effectively improved. According to the method disclosed by the invention, the selectivity or free radical reaction activity control of multiphase and homogeneous free radical reactions can be realized without introducing common free radical stabilizers (such as allyl, benzyl acetyl, aminomethyl and the like), and the inert gas has the characteristics of reusability and no toxicity; the method is suitable for free radical reactions requiring cyclic utilization of the stabilizer and free radical reactions requiring non-toxicity of the stabilizer.

The present disclosure generally relates to a one-component adhesive composition comprising a radically polymerizable component, an impact modifier, an adhesion promoter, a flexibilizer, a cure accelerator, an encapsulated radical-forming compound, and optionally a thixotropic modifier, and to the use of the one-component adhesive composition in bonding substrates to each other.

The present application relates to a kind of inducible S3 ·‑ Radical generation lithium-sulfur battery electrolyte and its preparation method and lithium-sulfur battery, by introducing an electrolyte additive-tetra-n-octylammonium chloride ((C8H 17 )4NCl) into electrolyte, promote S3 ·‑ Radical generation and stability, the lithium-sulfur battery electrolyte includes lithium salt, ether base solvent and additive;The additive is tetra-n-octylammonium chloride, the concentration of tetra-n-octylammonium chloride is 20-200mmol / L, this electrolyte can be used to assemble lithium-sulfur battery.Compared with prior art, the present application introduces tetra-n-octylammonium chloride to prepare lithium-sulfur battery electrolyte, changes the solvation structure of electrolyte, enhances the conversion kinetics of sulfur, promotes S3 ·‑ Radical formation and promote its stability, to promote its uniform growth in the process of lithium-sulfur battery charge and discharge solid electrolyte interface, improves ion transmission efficiency, in addition, the electrolyte synthesis path is simple, reduces the cost of battery manufacturing.

The embodiment of the invention discloses a preparation method of a high-stability nano silver wire and a method for preparing a flexible transparent electrode by adopting the nano silver wire, by preparing sulfydryl modified PVP (Polyvinyl Pyrrolidone), sulfydryl can provide hydrogen atoms to neutralize free radicals generated in an oxidation process to form stable disulphide, further oxidative damage caused by the free radicals is prevented, and the stability of the flexible transparent electrode is improved. The sulfydryl modified PVP is used for preparing the silver nanowire, so that the oxidation resistance of the prepared silver nanowire is improved; according to the flexible transparent electrode, the silver nanowires are dispersed in an ethanol solution, then the ethanol solution is sprayed on a PET film, and drying is carried out to prepare the flexible transparent electrode. According to the technical scheme, the method has the advantages of being easy to operate, high in controllability, suitable for large-scale production and the like, can be widely applied to preparation of the silver nanowire with excellent stability, conductivity and optical performance, and can be used for preparing a flexible transparent electrode by coating a flexible substrate with the silver nanowire.

The application relates to the cosmetic technical field and discloses PDRN-metal ion microsphere emulsion with antioxidant and microecological balance effects and a preparation method and application thereof. The preparation method comprises the following steps: preparing a PDRN aqueous solution and a metal salt aqueous solution; and the metal salt aqueous solution is dropped into the PDRN aqueous solution and stirred to obtain the PDRN-metal ion microsphere emulsion with antioxidant and microecological balance effects. According to the microspherization technology, the PDRN is stably compounded with specific metal ions and integrated in an emulsion system, the endogenous antioxidant pathway is activated through the PDRN, and the metal ions directly remove free radicals to form synergy, so that the antioxidant efficiency is significantly improved; the mild bacteriostatic property of the metal ions is utilized to synergistically regulate the skin microecology, the oxidation damage caused by the imbalance of the flora is reduced from the source, and a double-dimensional anti-aging mechanism of "removing free radicals-regulating microecology" is constructed; not only are the problems of stability and transdermal absorption of active ingredients solved, but also long-term activity of the active ingredients in a complex emulsion matrix is ensured.

The invention discloses a synergistic repair and stabilization modification method for high-performance recycled polypropylene (rPP) and a composite material thereof. According to the method, rPP, a specific amount of chain repairing agent, a specific amount of synergistic stabilization composite additive, a specific amount of odor adsorption / screening agent, a specific amount of nucleating agent and the like are subjected to melt blending in a double-screw extruder. The core of the invention lies in that the chain repair agent is utilized to chemically repair the broken molecular chain of the rPP and neutralize acidic substances, the synergistic stabilizer is utilized to decompose peroxide and capture free radicals to form a'repair-stability 'dual protection mechanism, and physical adsorption and devolatilization are combined to more comprehensively solve the problems of poor performance, low stability, strong odor and the like of the rPP. The obtained modified rPP has higher strength than conventional blending modified recycled polypropylene, excellent thermal stability and low odor grade, can be widely applied to the high-value fields of automobiles, household appliances and the like, and realizes high value-added recycling of rPP.

A method is provided for preparing a water-insoluble lignosulfonate polymer from a first solution containing lignosulfonate precursors, which involvesa) separating the lignosulfonate precursors from the first solution and providing a second solution with at least 5 wt % of lignosulfonate precursors obtained from the first solution, wherein the separating comprises filtering out components with a predefined particle diameter and separating low-molecular weight components including salts and low-molecular organic compounds,b) adding a radical-forming enzyme and gas to the second solution, wherein the gas comprises oxygen, andc) polymerizing the lignosulfonate precursors of the resultant solution of b).Other related aspects are described and claimed.

This invention discloses a highly efficient medical wastewater treatment agent and its preparation method, belonging to the field of wastewater treatment technology. It includes a main agent and an auxiliary agent. The main agent is prepared through the following steps: Step S1, adding diethanolamine to methanol to obtain intermediate 1; Step S2, adding chloromethyl polystyrene resin to isopropanol, stirring at a uniform speed, and adding intermediate 1 to obtain an antibacterial matrix; Step S3, adding cobalt nitrate hexahydrate and trimesic acid to deionized water to obtain a precursor; Step S4, adding the antibacterial matrix and the precursor to a 10% (v / v) ethanol aqueous solution to obtain the main agent. Through the synergistic effect of the main agent and the auxiliary agent, it can efficiently treat medical wastewater. The precursor is an organic ligand of metallic cobalt, which can catalyze the activation effect of the auxiliary agent persulfate, thereby producing sulfate free radicals and forming a new advanced oxidation process that effectively treats antibiotic pollutants in medical wastewater.

The present invention relates generally to a one-component cationically polymerizable composition comprising an aromatic epoxy resin, an epoxy reactive diluent, a cationic polymerization initiator, a radical forming compound, and optionally a carboxylic acid, and its use in impregnation processes.

A multilayer ceramic electronic component is provided. The multilayer ceramic electronic component includes a ceramic main body having a plurality of dielectric layers and a plurality of internal electrodes disposed such that the dielectric layers are interposed between the plurality of internal electrodes. An external electrode is disposed on an outer portion of the ceramic main body. A coating layer is formed on a portion of an outer surface of the ceramic main body and includes at least one of a thermal stabilizer that removes radicals generated from a water repellent coating agent and an antioxidant that decomposes radical formation factors and a water repellent coating agent. The coating layer improves moisture resistance reliability and durability of the multilayer ceramic electronic component under thermal stress and environmental stress.

To provide a compound having sufficient compatibility with a monomer and sufficient curability.SOLUTION: Provided is a fluorine-containing compound represented by formula (S1), (S2), or (S3) [where RF1 independently represents a monovalent organic group containing a fluorine atom; RF2 independently represents a divalent organic group containing a fluorine atom; L1 independently represents a group containing a monovalent radical-generating group; and L2 independently represents a group containing a divalent radical-generating group], where the fluorine content is 50 mass% or more, the fluorine-to-oxygen content ratio is 2.0 to 10.0, and the minimum interatomic bond dissociation energy is 300 kJ / mol or less.SELECTED DRAWING: None

This utility model discloses a device for treating recalcitrant dyes in printing and dyeing wastewater, belonging to the field of printing wastewater treatment technology. It includes a treatment tank, an iron-carbon micro-electrolysis component disposed inside the treatment tank for pretreatment and primary oxidation of recalcitrant dyes in printing wastewater, a first mounting plate, an ultraviolet photocatalytic component disposed at the bottom of the iron-carbon micro-electrolysis component to accelerate the oxidation of recalcitrant dyes, and a second mounting plate disposed at the bottom of the first mounting plate. The effect is that by combining the iron-carbon micro-electrolysis component, the ultraviolet photocatalytic component, and the persulfate activation component, three oxidation mechanisms—in-situ generation of active substances by iron-carbon micro-electrolysis, ultraviolet photocatalysis, and persulfate activation—multiple strong oxidizing free radicals are generated, forming a multi-stage synergistic oxidation effect. This allows for sufficient reaction treatment of recalcitrant dyes in printing waste, thereby enabling the printing wastewater to meet discharge standards and reducing harm to the natural environment.