48 results about "Chemical activity" patented technology

The application provides a method for inkjet printing of oligonucleotides, and belongs to the technical field of in-situ synthesis of oligonucleotides.The method comprises the following steps: modifying the surface of a solid carrier with a chemically active functional group; depositing oligonucleotide synthesis reagents onto the surface of the modified solid carrier by inkjet to perform in-situ synthesis; and the solvent in the oligonucleotide synthesis reagents comprises one or two of glutaronitrile, acetonitrile and propylene carbonate.The application uses a new type of difficult-to-vaporize solvent, greatly reduces the volatilization of reagents during inkjet synthesis and the generation of organic vapors during synthesis, and thus maintains a high in-situ synthesis reaction efficiency of oligonucleotides.

The present application relates to copper alloy preparation technical field, specifically to a kind of high-performance copper alloy for electronic material and preparation method thereof.The present application includes the following steps: preparation processing copper alloy material, preparation etching liquid, preparation biological base hydrophobic coating liquid and preparation high-performance copper alloy for electronic material.Cu-Al-Fe-Si alloy system is used to prepare processing copper alloy material in the present application, which not only prepares the substrate of copper alloy, but also makes the processing copper alloy material prepared in the subsequent etching by the synergistic design of material composition and organizational structure, so that the etching liquid can uniformly react on the surface of the processing copper alloy material, avoiding uneven etching caused by composition segregation, thereby improving the uniformity of coating when adhering.The surface of the copper alloy material obtained after etching finally has optimized physical roughness and chemical activity, so that the biological base coating can be firmly adhered to the surface of the copper alloy material after etching, thereby obtaining high-performance superhydrophobic coating.

The present invention is related to an insecticide composition comprising: at least one agrochemical active ingredient, and a surfactant combination. The present invention also provides process for preparation, use and method of controlling pests using said insecticidal composition.

The application discloses a method for preparing a super-hydrophilic porous membrane by grafting SiO2 on a polyurethane fiber membrane, and comprises the following steps: preparing a N,N-dimethylformamide / butyl acetate DMF / BuAc solution of polyurethane PU to obtain PU spinning solution; the PU spinning solution is used to prepare a micron porous membrane through an electrostatic spinning device; the porous membrane is placed in a plasma treatment device, a radio frequency source is turned on, and radio frequency power and time are set; a higher chemical activity plasma is used to activate the surface of the porous membrane fiber to form grafted active groups; the surface-activated porous membrane is placed in a mixed solution of ethanol and amino silane for ultrasonic treatment; the porous membrane treated by the amino silane is placed in a mixed solution of ethanol, water and tetraethyl orthosilicate for ultrasonic treatment to obtain a super-hydrophilic porous membrane. The super-hydrophilic porous membrane prepared by the method has excellent comprehensive properties such as moisture absorption, quick drying, oil-repellence under water and oil stain resistance.

The conductive paste provided by this invention comprises a conductive metal, lead-free glass powder, and an organic binder. The conductive metal and the lead-free glass powder constitute the total solids content, wherein the content of the conductive metal in the total solids content is 75-99.8 wt%, and the content of the lead-free glass powder is 0.2-25 wt%. The lead-free glass powder is a Te-Bi oxide system, which includes tellurium oxide and bismuth oxide. Tellurium oxide, as a glass network former, mainly determines the softening point and fluidity of the glass, effectively reducing the melting point and imparting good fluidity. Bismuth oxide, as a network modifier, can regulate the chemical activity of the glass, allowing it to moderately corrode the passivation layer during sintering and promoting the formation of silver-silicon ohmic contacts. Adjusting the ratio of the two within this range allows for precise matching of the sintering temperature curves of different crystalline silicon solar cells, broadening the process window for lead-free glass. Furthermore, this invention also provides a method for preparing the conductive paste.

This invention discloses a defective graphene-reinforced battery composite electrode and its preparation method, comprising a current collector, a defective graphene conductive coating, and an electrode active material layer; the defective graphene conductive coating is disposed on both sides of the current collector; the electrode active material layer is coated on the defective graphene conductive coating on both sides or on one side; and / or the electrode active material layer is doped with defective graphene nanosheets, or the composite electrode is in the form of a self-supporting electrode, composed of multilayer stacked defective graphene conductive films, the films containing nanopores and defect sites. This invention fully utilizes the high chemical activity of graphene defect sites, enabling it to have the triple functions of conductive additive, bonding bridge, and active lithium storage medium, synergistically optimizing the electrode microstructure and interface performance.

The application relates to a sapphire glass micro-via processing method based on a laser-induced etching process, and belongs to the technical field of glass via processing. A homemade femtosecond laser is precisely induced to modify and a coaxial nitrogen gas low-temperature plasma is activated in a cooperative pretreatment process. By limiting the core process parameters of the femtosecond laser, the stable alpha-Al2O3 crystal in the sapphire is directionally converted into gamma-Al2O3 with higher chemical activity, a modified area with a diameter of 2-3 microns is formed, the modified area size is precisely controllable, the via size deviation and the side wall non-perpendicular problem caused by the too large or insufficient modification range of the existing process are solved from the root, the coaxial plasma can target the modified area and introduce hydrophilic functional groups, the etching liquid immersion uniformity is greatly improved, the laser energy is concentrated in the modified area, the heat affected zone is extremely small, there are no thermal defects such as cracks and recondensates in the whole process, and the process is completely adapted to the homemade femtosecond laser processing module.

A solid electrolyte for metal dry electrolytic polishing, comprising: active particles of at least one type of ion exchange resin, said active particles being filled with an acid solution to generate chemical activity and electrical activity; at least one type of moderating particles of chemical action and / or of electrical conductivity of said active particles, such that said moderating particles reduce the erosion on the surface of the polished part caused by the exudates of said active particles.

The application relates to a kind of multicomponent composite coating anode plate and its preparation method, belong to anode technical field.The anode plate includes metal matrix and composite coating sequentially arranged on the surface of the metal matrix, the composite coating is sequentially bottom layer, intermediate layer and surface layer from bottom to top;The bottom layer is MAX phase conductive layer, combined with metal matrix by vacuum plasma spraying, the intermediate layer is formed in situ by using MAX phase in the bottom layer as template, the surface layer is prepared by fluorine-doped SnO2 treated by titanate, chloroiridic acid and pentachloride, and the MAX phase is at least one of Ti3AlC2 and Ti2AlC.The anode prepared by the application has excellent bonding force, chemical activity and strengthening life.

This application discloses a fiber-reinforced composite material and its preparation method. The composite material comprises the following raw materials in parts by weight: 650-1000 parts modified carbon fiber; 100-110 parts epoxy resin; 90-100 parts curing agent; 0-5 parts toughening agent; 0-5 parts flame retardant; and 0-5 parts filler. The filler comprises one or more of aluminum hydroxide, calcium carbonate, talc, and silica. The filler particle size is 6-12 μm, and the mass ratio of epoxy resin, toughening agent, and filler is 1:0-0.05:0-0.05. The high chemical activity of the modified carbon fiber surface enhances the interfacial bonding force between the fiber and the resin matrix in the composite material, improving its tensile strength. Simultaneously, by rationally designing the composition and content ratio of each raw material, precisely controlling the ratio of epoxy resin, toughening agent, and filler, and adding flame retardant, the composite material's toughness, tensile strength, and flame retardant properties are improved while maintaining its mechanical strength. The process is simple and suitable for industrial production.

An electrode (2) comprising a sheet made of lithium or a lithium alloy coated on at least one of its faces with a coating (5) comprising at least one compound capable of lithiasis at a potential between 0 and 1 V with respect to Li+ / Li, characterized by an electrochemically active surface area S ranging from 100 to 1700 cm² per cm² of lithium or lithium alloy, the electrochemically active surface area being defined by the relation S = 1 + SBET × electrode weight where: - SBET (cm² / g) is the surface area BET of the compound capable of lithiasis at a potential between 0 and 1 V with respect to Li+ / Li; - the electrode weight (g / cm²) is the mass of compound capable of lithiasis at a potential between 0 and 1 V with respect to Li+ / Li deposited per cm² of lithium or lithium alloy. Abbreviated figure: Figure 1

This invention relates to the field of metallurgical sheet metal production technology, providing a method, apparatus, equipment, and storage medium for controlling large-area under-pickled defects in pickled sheets. By comparing thickness data with a preset torque setting matrix, the corresponding process section's squeeze roller torque setting value is output and converted into control commands, which are then output to the squeeze roller drive device. This causes the squeeze roller to apply a clamping torque matching the thickness, keeping the strip steel submerged below the acid solution surface in the pickling tank. This invention overcomes the technical bias of solving under-pickled defects by enhancing the chemical activity of the acid solution. It expands the squeeze roller from a draining tool to an immersion posture control device, fundamentally eliminating the conditions for under-pickled defects caused by strip steel being suspended from the liquid surface. The defective strip yield is reduced from 0.20% to 0. Simultaneously, it operates stably at high speeds of 150 m / min without requiring speed reduction or increased acid and energy consumption, achieving differentiated and precise control of thin, medium, and thick strip steel of all specifications. It has significant advantages such as low investment, quick results, and ease of promotion and application.

This invention belongs to the field of composite materials and relates to a carbon fiber sizing agent, its preparation method, and its application. The carbon fiber sizing agent is an aqueous solution of lignin-based derived resin or a compound solution of an aqueous solution of lignin-based derived resin and a rigid nanoparticle sol; by mass ratio, the rigid nanoparticle sol : lignin-based derived resin aqueous solution = (0-6): 100. In this invention, the lignin-based derived resin provides good wettability and stress buffering, while the rigid nanoparticles form strong interactions with resin groups through surface oxygen vacancies, achieving uniform dispersion and interfacial anchoring. After treatment with the sizing agent, the surface roughness and chemical activity of the carbon fiber are significantly improved, and the interfacial bonding strength with the resin matrix is ​​greatly enhanced. The interlaminar shear strength, flexural strength, and tensile strength of the carbon fiber composite material are simultaneously improved. This invention has a simple process and is environmentally friendly. While maintaining the bulk properties of the carbon fiber, it achieves synergistic optimization of interfacial properties, and has significant engineering application value.

This invention discloses a method for preparing a gradient elastic core-shell dual rare earth co-doped cerium oxide abrasive and its application, belonging to the field of mechanical polishing technology. The method includes the following steps: S1, reacting pyromellitic dianhydride with 4,4'-diaminodiphenyl ether and N,N-dimethylformamide to obtain PI microspheres; S2, adding buffer solution, dopamine hydrochloride, and KH560 to react the PI microspheres to obtain modified microspheres; S3, dispersing the modified microspheres and adding a shell material to react, adding a mixed solution, and grinding to obtain the core-shell abrasive; S4, dispersing the core-shell abrasive in anhydrous ethanol, adding polyethylene glycol monomethyl ether to react, and obtaining the abrasive. The abrasive prepared by this invention utilizes dual rare earth co-doping to construct highly efficient chemically active centers, achieving a material removal rate (MRR) of 200~230 nm / min, which is more than 67% higher than pure CeO2 abrasive and significantly higher than single Y... 3+ The CeO2 doping of abrasives increases polishing efficiency by more than 45%, resulting in a significant improvement in polishing efficiency.

The application discloses a titanate self-assembled monomolecular passivation layer and a preparation method and application thereof, and belongs to the technical field of photovoltaic cells. A stable molecular buffer interface is constructed between an oxidized nickel film and a perovskite light-absorbing layer by introducing a diisopropyl titanate di(triethanolamine) self-assembled molecular layer on the surface of the oxidized nickel film. The titanate molecules can be coordinated or condensed with the hydroxyl groups on the surface of the oxidized nickel, and interact with unsaturated nickel sites through a multidentate triethanolamine structure, so as to simultaneously inhibit the chemical activity of surface hydroxyl defects and high-valence nickel ions, significantly reduce the interface defect state density and non-radiative recombination loss. The passivation layer can be formed under mild conditions, and the process is simple and highly compatible with the preparation process of a trans device. The passivation layer can realize the synchronous improvement of the photoelectric conversion efficiency and long-term operation stability of the trans perovskite solar cell without increasing the complexity of the device structure.

The utility model discloses a kind of bismuth-doped type dechlorination agent block materials that can be recycled, specifically related to dechlorination agent block material technical field, including dechlorination agent block material, the surface of dechlorination agent block material is provided with through-hole, the middle part of dechlorination agent block material is provided with inner hole.The utility model first through the cooperation of through-hole and inner hole, can significantly increase the contact area of dechlorination agent block material and chlorine-containing liquid, improve mass transfer efficiency, so that liquid can be fully contacted with the dechlorination active ingredient inside block material, accelerate dechlorination reaction speed, improve dechlorination efficiency, combined with the special chemical activity of bismuth-doped material, chlorine in water can be quickly and efficiently removed, dechlorination agent block material uses special material formula and structure design, after completing dechlorination task, can be regenerated by simple physical or chemical method, restore its dechlorination performance, realize multiple recycling, effectively reduce dechlorination cost, reduce resource waste and environmental pollution.

The application discloses a supramolecular nanoscale self-assembly, a preparation method and application thereof, wherein the mass percentage of carbon dots in the supramolecular nanoscale self-assembly is 70-90%, and the mass percentage of methylene blue is 10-30%; the particle size of the supramolecular nanoscale self-assembly is less than 10 nm, the supramolecular nanoscale self-assembly has good water solubility, and the characteristic absorption peak is at 665 nm; the supramolecular nanoscale self-assembly has both the electron transfer capacity of carbon dots and the oxidation-reduction discoloring capacity of methylene blue, can simultaneously accelerate the intracellular and extracellular electron transfer process of electrochemically active bacteria, and then realizes rapid visual screening of the electrochemically active bacteria.

The systems and methods described herein relate to estimating the remaining value of used batteries for reuse purposes by deriving a safe state using a healthy state and derivative calculation of measured impedance. [Solution] In one embodiment, the method includes the step of measuring the impedance of a spent battery using test equipment at a target temperature and a target state of charge (SOC), where the target temperature and target SOC are related to the chemical activity of the spent battery. The method also includes the step of removing interference sources by calculating the first derivative of the real part of the impedance. The method also includes the step of estimating a residual value from a safe state and a healthy state derived in response to changes in the first derivative within a frequency band. The method also includes the step of transmitting the residual value to a device when the residual value satisfies the parameters, and allowing the device to draw power from the spent battery during reuse operation.

The application discloses a method for improving the adhesion of an integrated circuit and a glass substrate, comprising the following steps: S1, surface cleaning, S2, surface treatment, S3, introducing an adhesive layer, S4, temperature control, S5, alignment and compression, and S6, solidification. The application improves the roughness and chemical activity of the surface of the glass substrate through special treatment of the glass substrate, improves the adhesion of the surface of the glass substrate, controls the compression pressure and compression rate of the integrated circuit and the glass substrate, makes the contact surface between the two uniform and free of bubbles, and further improves the connection reliability between the integrated circuit and the glass substrate. Excellent adhesion performance can realize better contact thermal resistance, improve the heat conduction performance, high adhesion can realize smaller gap and more compact packaging structure, make the overall size smaller, and can also increase the contact area and bonding strength between the integrated circuit chip and the glass substrate, and improve the anti-vibration and anti-impact capability.

To obtain a delithified electrochemically active material that can be directly combined with electrodes, a chemical process for removing lithium from an electrochemically active composition is provided. [Solution] The process is li x The present invention provides an electrochemically active composition defined by the formula MO2, wherein M comprises Ni, and M optionally further comprises one or more other metals, transition metals, rare earth metals, or combinations thereof, and x is a first Li / M atomic ratio of 0.8 to 1.3; and provides the electrochemically active composition to be combined with a strong oxidizing agent for a lithium removal time to obtain a delithiated electrochemically active material, wherein more than 50% of the initial nickel in the electrochemically active composition is present in the delithiated electrochemically active composition after the lithium removal time.

This invention relates to the field of electrochemical technology, and more particularly to a method for testing the reaction kinetics at the Bi electrode interface in Li-Bi batteries. The dual-probe measurement system constructed in this invention works collaboratively on a precise three-dimensional positioning platform of a shared scanning electrochemical microscope. One probe maps the electrochemical activity distribution on the electrode surface, visually reflecting the spatial location of low-activity phases, while the other Hg probe simultaneously records the Li content in the corresponding region. + Concentration or diffusion coefficient. This "functionally complementary, spatially synchronized" measurement mode can integrate observed electrochemical data, interfacial electrochemical activity, and Li... + The migration dynamics are directly related, thus providing experimental evidence for revealing the true rate-limiting steps in the phase transition process, enabling a more comprehensive and three-dimensional analysis of complex electrode processes, and making up for the limitations of single signal measurement.

This invention relates to the field of harmless treatment technology for oily sludge, specifically to a method for preparing carbon quantum dots from oily sludge. Conventional methods for preparing carbon quantum dots from oily sludge have limitations in yield and fluorescence intensity. To address these issues, this invention provides a method for preparing carbon quantum dots from oily sludge. Considering the complex composition of oily sludge, this invention designs a multi-stage purification process chain of "ultrasonic extraction—water washing—Soxhlet extraction—acidification treatment." Each step works synergistically, purifying the sludge step by step to ultimately obtain a high-purity refined organic carbon source. The refined organic carbon source removes impurities through gentle solvent extraction and acid washing, maximizing the preservation of the organic carbon source's chemical activity and structural integrity. In the hydrothermal reaction, it can be effectively converted into carbon quantum dots, avoiding carbon source loss or activity reduction due to over-processing, thus further improving the yield and fluorescence intensity of carbon quantum dots.

The application provides a regeneration liquid and a regeneration method of corrugated plate denitration catalyst, and relates to the technical field of catalyst regeneration. The regeneration liquid comprises a three-stage cleaning liquid and an activity supplementing liquid; the three-stage cleaning liquid comprises an alkali cleaning liquid, an acid cleaning liquid and an oxidation liquid; and the activity supplementing liquid comprises vanadium salt, tungsten salt and nano TiO2 sol. The regeneration liquid can restore the denitration efficiency of the failed catalyst to more than 91% of that of a new catalyst. The high efficiency is derived from a strategy of "first deep cleaning, then double-effect recovery". The combination of the thorough cleaning and the synchronous regeneration of "chemical activity + physical structure" is the key to achieving the high-efficiency regeneration effect.

A regenerable HgCl2 standard gas generating agent, and a preparation method and application thereof are provided. The method includes: dissolving a transition metal chloride in water to produce a solution; adding a non-carbon-based support material into the solution and mixing evenly to produce a mixture; performing suction filtration and drying treatment on the mixture to produce an HgCl2 generating agent. The HgCl2 standard gas generating agent uses the transition metal chloride as active component and the non-carbon-based substance as active component and dispersion support. The method further proposes performing further modification through low-temperature plasma to increase the content of the active component, and further proposes restoring the chemical activity of the HgCl2 standard gas generating agent through low-temperature plasma treatment for the purpose of regeneration.

This invention relates to a composition comprising a compound of formula (I) and an agrochemical active ingredient selected from ADEPI DY N TM (pydiflumetofen), oxathiapiprolin, sedaxane and azoxystrobin; R 1O[C(R 2)(H )C( R3 )(H)O]nX (I), where R1 is C6-12 alkyl or is C6-12 alkenyl; n is from 5 to 50; independently, each [C{R2)(H)C(R3)(H)O] unit has both R2 and R3 being hydrogen or has one of R2 and R3 being hydrogen and the other being phenyl; provided that at least one [C(R2){H)C(R3)(H)O] unit has one of R2 and R3 being hydrogen and the other being phenyl; and X is hydrogen or is selected from C1-4 alkyl; and to use of a compound of formula (I) to reduce particle growth (such as nucleation, crystal growth or Ostwald ripening) of an agrochemical active ingredient.

The application relates to the technical field of supercapacitor electrode materials, in particular to a sulfur-doped nickel cobalt selenide composite material and a preparation method and application thereof. The preparation method comprises the following steps: taking SeO2 as a selenium source, taking hydrazine hydrate as a strong reducing agent, mixing a SeO2 ethylene glycol solution with the hydrazine hydrate and a NiCo-PBA@NiCo-LDH multi-level core-shell precursor, and performing a selenization reaction to obtain NiCoSe2; mixing the NiCoSe2 with sulfur powder, and performing calcination treatment to obtain the sulfur-doped nickel cobalt selenide composite material. Through the synergistic effect of the multi-level core-shell structure and the hetero-doping, the sulfur-doped nickel cobalt selenide composite material is endowed with excellent electrochemical energy storage performance, and the problems of poor rate performance and decreased cycle stability caused by the insufficient intrinsic electrochemical activity and large volume change in the charging and discharging process of the transition metal selenide as a supercapacitor electrode material are effectively solved.

This invention discloses a red mud-based asphalt modifier, its preparation method, and its application, relating to the field of solid waste modified asphalt technology. The preparation method of the red mud-based asphalt modifier mainly includes three core steps: acid activation and structural reconstruction, phytic acid surface chelation functionalization, and octadecylamine hydrophobic grafting. This invention can simultaneously optimize the pore structure of red mud, activate surface chemical activity, and reverse surface wettability. The red mud-based asphalt modifier of this invention not only has excellent asphalt compatibility but also adsorbs light components in asphalt through its porous structure and forms physical entanglement between long-chain organic molecules on its surface and asphalt components, thereby improving the mechanical properties of asphalt.