7 results about "Radical formation" patented technology

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 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.

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.

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.