660 results about "Hydrogen atom" patented technology

Systems and methods for measuring the content of an element in a soil comprises: a neutron source for irradiating the soil with neutrons; a detector assembly configured to detect an INS gamma spectrum of the soil; an instrument for measuring a moisture content of the soil; and a processor in communication with the detector assembly, the processor configured to: apply a moisture calibration coefficient to calculate a net peak area of a characteristic peak of the element in the INS gamma spectrum, the moisture calibration coefficient calculated to account for the moderation of fast neutrons by hydrogen atoms of water present in the irradiated soil at the location under analysis; and generate a concentration of the element in the soil. The instrument for measuring a moisture content of the soil may comprise the detector assembly. Systems and methods incorporating a temperature-controlled housing for the gamma detector assembly are also provided.

The invention discloses a hydrogen embrittlement-resistant welding wire for tailor welding of ultrahigh-strength aluminum-silicon coating hot-formed steel and a welding method, and belongs to the technical field of metal materials. 5.0%-7.0% of Ni; 0.3%-0.6% of Mo; 0.08% to 0.12% of Nb; mo, Nb and C react to form Mo2C / NbC nanophase fixed free hydrogen; 0.05%-0.1% of V: carrying out a reaction to form VC nanophase fixed free hydrogen; 0.5% to 0.8% of La; 0.3%-0.5% of Ce; 0.1%-0.5% of Ti; according to the invention, hydrogen atoms diffused in the welding process can be captured, the hydrogen content in a welding seam is obviously reduced, and the diffusible hydrogen amount is reduced by more than 40% under the hydrogen capturing effect of retained austenite, so that the hydrogen-induced crack sensitivity is reduced by 70%.

A high thermal conductive silicone composition including: (A) an organopolysiloxane having at least two aliphatic unsaturated hydrocarbon groups in one molecule and a kinematic viscosity at 25 C of 100 to 100,000 mm2 / s; (B) an aluminum powder having an average particle size of 50 μm or more; (C) a thermal conductive filler having an average particle size of 0.1 to less than 50 μm; (D) an organohydrogenpolysiloxane having two or more hydrogen atoms bonded to a silicon atom (Si—H groups) in one molecule; (E) a hydrolyzable organopolysiloxane represented by the following general formula (1); and (F) a platinum group metal catalyst having an effective amount. The high thermal conductive silicone composition can conform to the warpage of a substrate due to an increased material thickness and can maintain heat dissipation performance due to a high thermal conductivity.

A paste that includes particles of a layered material in an ammonia aqueous solution. The particles include one or plural layers, the layers having a layer body represented by MmXn, wherein M is at least one metal of Group 3, 4, 5, 6, or 7, X is a carbon atom, a nitrogen atom, or a combination thereof, n is not less than 1 and not more than 4, and m is more than n but not more than 5, and a modifier or terminal T exists on a surface of the layer body, wherein T is at least one selected from the group consisting of a hydroxyl group, a fluorine atom, a chlorine atom, an oxygen atom, and a hydrogen atom, wherein the paste has a viscosity of 1 Pa·s or more at a shear velocity of 1 / s when the paste has a solid content concentration of 1.0% by mass.

The present invention is an addition-curable silicone composition containing components (A) to (C): (A) An addition reaction product of an organopolysiloxane represented by formula (1) and a compound represented by formula (2), the addition reaction product having two addition-reactive carbon-carbon double bonds per molecule. (1) (R1 is a C1-12 monovalent hydrocarbon group, R2 is a methyl group or a phenyl group, a is an integer of 0-50, and b is an integer of 0-300. ), (2) (R3 represents a C1-12 divalent hydrocarbon group.), (B) an organosilicon compound having a hydrogen atom bonded to at least two silicon atoms per molecule, and (C) a hydrosilylation reaction catalyst. Thus, provided are an addition-curable silicone composition that has high transparency and a high refractive index and yields a cured product having high strength and high elongation and a highly reliable optical semiconductor device sealed by a cured product thereof.

The invention discloses a method for predicting hydrogen diffusion of a multi-coating material on the surface of a material in a vacuum environment, and belongs to the technical field of hydrogen diffusion of materials. On the basis of a hydrogen atom diffusion mass transfer theory in a single-layer matrix material, a hydrogen atom diffusion mass transfer model of the double-coating material is constructed. The hydrogen atom diffusion differential equation, the capture / removal differential equation and the boundary desorption / adsorption differential equation of the single-layer matrix material are established in combination with respective material parameters corresponding to different materials of each layer, boundary condition parameters are introduced into an interlayer interface, the flux continuity and concentration transition relation between the matrix and the plating layer is processed, and the plating layer is obtained. And further obtaining the hydrogen concentration distribution and the dynamic hydrogen release rate in the multi-coating material. The prediction method disclosed by the invention is suitable for any coating combination, can quickly migrate only by replacing material data, and is suitable for multiple fields such as electronic packaging, vacuum devices, hydrogen fuel cells and the like.

This nonspecific reaction inhibitor is a copolymer containing a first repeating unit represented by formula (1) and a second repeating unit represented by formula (2). In formula (1), R1, R2, and R3 are each independently a hydrogen atom or a methyl group, X is NH or an oxygen atom, Y is SO3 - or COO-, and Yn and m are each independently an integer from 1 to 5. In formula (2), R4 is a hydrogen atom or a methyl group, Z is NH or an oxygen atom, and A is a linear or branched alkyl group with 12 to 40 carbon atoms.

The invention discloses a hydrogen brittleness performance evaluation method for a hydrogen transport pipeline, which comprises the following steps: obtaining the average hydrogen concentration in a sample through a high-pressure hydrogen permeation test of a wafer sample, and obtaining the hydrogen concentration and hydrogen diffusion coefficient of the surface of the sample under a specific electrochemical hydrogen charging condition through an electrochemical hydrogen charging test of the wafer sample; a finite element analysis model of a target sample is established to simulate the change relation of the total amount of hydrogen atoms in the target sample along with time under the electrochemical hydrogen charging condition, and the electrochemical hydrogen charging time equivalent to the high-pressure gaseous hydrogen charging is obtained by comparing the high-pressure gaseous hydrogen charging with the electrochemical hydrogen charging. The target sample is charged with hydrogen through an electrochemical hydrogen charging method, and finally the hydrogen embrittlement performance of the target sample is obtained through a hydrogen embrittlement performance test. According to the method, simple finite element simulation and electrochemical hydrogen charging are combined, high-pressure gaseous hydrogen charging which is complex, low in efficiency and high in danger is replaced, and the detection time of the hydrogen embrittlement performance test of the hydrogen charging pipe is shortened.

A deuterated composition, a preparation method therefor, a light-emitting layer, and an organic light-emitting device, relating to the field of organic light-emitting materials. The deuterated composition comprises different deuterated compounds of a compound represented by formula I, wherein in formula I, Ar1 is selected from phenyl or naphthyl. For the different deuterated compounds of the same compound, the average deuteration rate of deuterium-exchangeable hydrogen atoms on Ar1 and anthryl is greater than 98%, and the average deuteration rate of deuterium-exchangeable hydrogen atoms on phenanthryl is 96%-98%. When the deuterated composition is used as a light-emitting material of organic light-emitting devices, the service lifetime of the devices is significantly prolonged.

The invention belongs to the technical field of hydrogen-resistant coatings, and particularly relates to a hydrogen-resistant coating as well as a preparation method and application thereof. The hydrogen-resistant coating comprises an alpha-Al-based solid solution layer on the substrate, Al2O3 micro-nano particles and SiO2 micro-nano particles which are dispersed and distributed in the alpha-Al-based solid solution layer, and an Al2O3 thin film layer covering the surface of the alpha-Al-based solid solution layer. The compact structure of the alpha-Al-based solid solution can block the permeation of hydrogen atoms, enhance the interface between phase particles and a matrix, prolong the diffusion path of the hydrogen atoms in the material, increase the diffusion barrier and serve as a trap for capturing hydrogen, and the composite coating has the dual effects of capturing and blocking hydrogen, so that the hydrogen permeability is further reduced. When the coating is slightly damaged, the damaged surface can be oxidized again to form Al2O3, and the self-repairing capacity is achieved. The composite coating is prepared by adopting a braze coating method, and has the advantages of simple preparation method, low cost, capability of realizing industrial batch production and the like.

The invention discloses an RAFT (Reversible Addition-Fragmentation Chain Transfer) reagent as well as a preparation method and application thereof, and belongs to the technical field of RAFT reagent synthesis. The general formula of the RAFT reagent is shown in the specification, r1 to R5 are selected from any one of a hydrogen atom, a methyl group, a methoxyl group and a halogen atom; and R6 is selected from any one of alkyl ester groups of C3-C6. The RAFT reagent provided by the invention has a unique molecular structure, and shows excellent rapid light response characteristics, excellent initiation efficiency and relatively high triplet quantum yield. In the dynamic process, the polymer not only shows an extremely high polymerization rate, but also has excellent chain transfer capacity, and can be used for preparing acrylate and acrylamide polymers with narrower molecular weight distribution. Due to the characteristics, rapid curing of the resin can be realized, and the resin can be applied to the field of photocuring 3D printing.

A solution for forming a solid electrolyte, includes: a plurality of silicon oxide particles dissolved in a liquid medium. The silicon oxide particles are functionalized with organic moieties including: at least four non-hydrogen atoms, of which one atom is covalently bonded to a silicon atom of the silicon oxide particles, and a linkable functional group capable, after activation by a radical species, of forming a covalent bond by reaction with another identical linkable functional group. The organic moiety has at least two atoms, not part of the linkable functional group, that are bonded by a x bond to each other. A ratio of the number of the organic moieties to the number of silicon atoms comprised in the plurality of silicon oxide particles is at least 0.3, and an electrolyte compound.

The invention provides a method and a device for testing hydrogen doping of a buried steel pipe under a cathode protection condition. The method and the device solve the technical problem that an internal hydrogen permeation-external hydrogen adsorption synergistic effect mechanism faced by a buried pipeline cannot be reflected in an existing test. The method comprises the following steps: establishing a dual test environment under a cathode protection condition, forming a control group and an experimental group of a corrosion test piece to be tested, deploying the control group in a single soil environment, and deploying the experimental group in internal and external hydrogen environments; the power-on potential and the power-off potential are continuously monitored in the dual test process; quantitative comparison of key parameters of the control group and the experimental group is formed according to the double test periods; and constructing a multiple regression model according to the key parameters in combination with potential correction data to quantify the correlation between the corrosion rate and the hydrogen embrittlement sensitivity. The double-environment coupling effect in the actual operation of the pipeline is synchronously simulated, and the diffusion path difference of hydrogen atoms in metal lattices and the influence of double-environment superposition on the corrosion rate are more truly reflected.

Provided is new technical means capable of obtaining a thermally conductive silicone composition or a cured product thereof having good adhesion properties even when a plastic material or the like is present on an adherend. A composition set for use in a thermally conductive silicone composition, includes a first composition and a second composition. Herein, the first composition includes (A) a diorganopolysiloxane having an alkenyl group bonded to a silicon atom at a molecular chain terminal, (D) an addition reaction catalyst, and (E) a thermally conductive filler, and the second composition includes (A) a diorganopolysiloxane having an alkenyl group bonded to a silicon atom at a molecular chain terminal, (B) a diorganohydrogenpolysiloxane having a hydrogen atom bonded to a silicon atom at a molecular chain terminal and having no cyclic group, (C) an organohydrogensiloxane having a ratio (Si(Cy) / Si(H)) of the number of silicon atoms to which a cyclic group is bonded to the number of silicon atoms to which a hydrogen atom is bonded of 0.15 or more, and (E) a thermally conductive filler. The content of the component (E) in the thermally conductive silicone composition is (50) parts by mass or more relative to (100) parts by mass of the thermally conductive silicone composition.

A compound having a structure represented by general formula (1). In general formula (1), R101 to R121 are each independently a hydrogen atom or a substituent, where R101 to R121 are not a substituted or unsubstituted N-carbazolyl group. The structure represented by general formula (1) has at least one group represented by general formula (2). In general formula (2), at least one of X1-X5 is represented by a nitrogen atom.

A photoelectric conversion element in which a compound represented by general formula (1) is used in a hole transport layer has excellent heat resistance. R1 represents an aromatic hydrocarbon group, a heterocyclic group or the like, and R2-R29 represent a hydrogen atom, an alkoxy group or the like.

As a charge-transporting varnish for forming a charge-transporting thin film with excellent hole transport properties, a charge-transporting varnish is provided, comprising copper halide (I) or pseudo-copper halide (I), one of an amine selected from formulas (1) to (3), SiO2 nanoparticles, and a solvent. (where R...) 1 ~R 4 Each can independently represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms. L represents an alkylene group having 3 to 8 carbon atoms, and oxygen atoms may be present between the carbon atoms in the aforementioned alkylene groups. However, there must be at least 3 carbon atoms between H₂N⁻ and -OH. R 5 ~R 6 Each of these can independently represent an alkyl group having 1 to 6 carbon atoms that can be replaced by a hydroxyl group, and oxygen atoms may be present between the carbon atoms of these alkyl groups. However, R 5 and R 6 (At least one alkyl group is substituted with a hydroxyl group, or an oxygen atom is present between carbon atoms.)

The present disclosure is characterized by being represented by general formula G1. In general formula G1, ring C is an aromatic hydrocarbon ring or a heteroaromatic ring. A11-A15 and A21-A25 are each independently selected from the group consisting of CRA and a nitrogen atom. RA represents a hydrogen atom or a substituent of various types. When RA exists in a quantity of more than one, the plurality of RAs may be the same or different from each other. X1 and X2 are each independently selected from the group consisting of an oxygen atom, a sulfur atom, a tellurium atom, a selenium atom, and NRB. RB represents a hydrogen atom or a substituent of various types. When RB exists in a quantity of more than one, the plurality of RBs may be the same or different from each other. RAs adjacent to each other or RA and RB adjacent to each other are optionally bonded to form a ring.

A method for inhibiting corrosion of a metal article in contact with a solution including an acid includes adding to the solution a corrosion inhibitor in an amount of 1 to 500 parts per million (ppm) based on the total number of parts by mass of the solution, thereby adsorbing the corrosion inhibitor onto the surface of the metal article via at least one interaction to form a barrier layer in the form of a composite. The at least one interaction comprises a physisorption, a chemisorption, and a retro donation. The corrosion inhibitor has a formula (I)where n is any integer from 8 to 21 inclusive and R1, R2, R3, R4, and Rs are each independently selected from the group consisting of a hydrogen atom, a hydroxyl group, an optionally substituted alkyl, an optionally substituted cycloalkyl, and an optionally substituted alkoxy.

The method for depositing a thin film includes: supplying a precursor into a cavity to be adsorbed onto a substrate; purifying the inside of the cavity; and supplying a reactant into the cavity to react with the precursor to form a thin film and fill the gap portion, the precursor being formed by mixing 1-5 moles of a compound represented by Chemical Formula 1 or Chemical Formula 2 and 1-5 moles of a metal compound, <Chemical Formula 1> wherein X is O or S, and R1 or R2 is each independently selected from an alkyl group having 1-8 carbon atoms, a cycloalkyl group having 3-6 carbon atoms, and an aryl group having 6-12 carbon atoms, <Chemical Formula 2> wherein X is O or S, n is 1-5, and R1-R4 is each independently selected from a hydrogen atom, an alkyl group having 1-5 carbon atoms, a cycloalkyl group having 3-6 carbon atoms, and an aryl group having 6-12 carbon atoms.

Provided are: composite copper particles suitable for use as a raw material for a paste that can be sintered even in an inert atmosphere and that can be used in a non-pressure bonding method; and a bonding member containing the paste; and a method for producing the composite copper particles. The present invention is a composite copper particle containing a copper particle, a monocarboxylic acid or a salt thereof, and a compound represented by general formula 1: R1 (OCH2CH2) nOR2 (in the formula, R1 represents an alkyl group, an aryl group, or a hydrogen atom, R2 represents an alkyl group, an aryl group, a hydrogen atom, or an acetyl group, and n is an integer of 1-4 (inclusive), but not the case where both R1 and R2 are a hydrogen atom), and a compound represented by general formula 1: R1 (OCH2CH2) nOR2 (in the formula, R1 represents an alkyl group, an aryl group, or a hydrogen atom, R2 represents an alkyl group, an aryl group, a hydrogen atom, or an acetyl group). The average particle diameter of the composite copper particles measured by a scanning electron microscope is 170 nm or more and 600 nm or less.

A method for producing low-aromatic white oil involves the mercapto-olefin addition reaction of a nickel mercaptonicate complex with methylallyltri-n-butyltin and vinyl ferrocene, respectively, using a carbon molecular sieve as a support to prepare a hydrogenation catalyst. This catalyst exhibits good mass transfer performance, inhibiting cracking reactions and pore blockage. The porous structure of the carbon molecular sieve provides effective channels for hydrogen atoms to diffuse on and within the catalyst surface, thereby improving hydrogen utilization. Dispersing nickel metal ions on the support surface to form a monolayer or multilayer structure enhances catalyst activity. It also resists the influence of some harmful substances on catalyst activity. The hydrogenation catalyst prepared by this invention enhances catalyst stability, reduces sintering and deactivation rates, thereby extending catalyst life. Furthermore, it contributes to improving the efficiency and selectivity of the hydrocracking process.

The present invention provides a vinyl compound that has excellent solvent solubility, that provides a cured product having excellent heat resistance, thermal decomposition stability, thermal conductivity, low dielectric constant, low dielectric tangent, and flame retardance, and that is useful for sealing electrical and electronic components and is useful as a circuit board material or the like.　Provided is a multifunctional vinyl compound represented by general formula (1). In formula (1), each R1 independently represents a hydrogen atom, a fluorine atom, a methoxy group, or a monovalent hydrocarbon group having 1-6 carbon atoms. R2-R4 each independently represent a hydrogen atom, a hydroxy group, a fluorine atom, a methoxy group, a monovalent hydrocarbon group having 1-6 carbon atoms, or a vinylbenzyl ether group. n represents a number of 1-15.

The present disclosure aims to provide a perovskite composition that can obtain a crystalline film that is flat, free of voids, and has high power generation efficiency. [Solution] The perovskite composition according to this embodiment comprises a perovskite compound precursor, a first component which is a solvent for the perovskite compound precursor, and at least one second component selected from the group consisting of nitrogen-containing pyridines and 4-tert-butylpyridine. The nitrogen-containing pyridines are compounds in which a first nitrogen-containing group is bonded to one of the ortho, meta, or para positions of a pyridine ring, and a hydrogen atom is bonded to a position other than the position to which the first nitrogen-containing group is bonded, or at least one of the positions other than the position to which the first nitrogen-containing group is bonded is bonded to one selected from the group consisting of a carbon-containing group, a second nitrogen-containing group, and an alkoxy group.

A fluorine-containing ether compound represented by formula (1). R < 1 >-O-CH < 2 >-R < 2 >-CH < 2 >-O-R < 3 > (R < 2 > is a perfluoropolyether chain. R1 is a formula (2-1) or a formula (2-2). And R3 is an organic group having at least one polar group and having 2-65 carbon atoms. In formula (2-1), X1 is a divalent linking group having 1-40 carbon atoms. Y1 and Z1 are organic groups with 1-12 carbon atoms or hydrogen atoms. At least one of X1, Y1, and Z1 contains a primary hydroxyl group. In the formula (2-2), X2 is a divalent linking group having 1-40 carbon atoms. And Y2 is an organic group with 1-12 carbon atoms or a hydrogen atom. And Z2 is an organic group with a carbon atom number of 1-12. And at least one of X2, Y2, and Z2 contains a primary hydroxyl group. )

A two-dimensional particle that includes: one or plural layers that comprise a layer body represented by: MmXn, wherein Mis at least one metal of Group 3, 4, 5, 6, or 7; X is a carbon atom, a nitrogen atom, or a combination thereof; n is 1 to 4; and m is more than n but not more than 5, a modifier or terminal T exists on a surface of the layer body, wherein T is at least one selected from a hydroxyl group, a fluorine atom, a chlorine atom, an iodine atom, an oxygen atom, a chlorine atom, a phosphorus atom, and a hydrogen atom; and a hydrocarbon compound exists on the one or plural layers.

The application discloses a method and device for obtaining local gas temperature and equivalence ratio of a combustion field. Laser-induced breakdown spectroscopy technology is used to form a target plasma by laser-induced breakdown of a flame to be measured. Firstly, reference signals of the target plasma are collected to obtain a reference signal set, and current hydrogen atomic spectral line broadening and current plasma temperature of the target plasma are calculated. Then, the reference signals are input into a gas temperature characterization model to obtain a local gas temperature. The reference signals and spectral line intensities are input into a spectral line intensity correction model to obtain a corrected spectral line intensity set. Finally, the corrected spectral line intensity set, the current plasma temperature and the current hydrogen atomic spectral line broadening are input into an equivalence ratio measurement model to obtain the equivalence ratio of the flame to be measured. Through step-by-step correction of spectral intensity, the application can avoid the influence of temperature on equivalence ratio measurement, improve the accuracy of equivalence ratio measurement, and realize local gas temperature measurement.

To provide an addition-curable silicone composition having good flowability even when a polyorganosiloxane containing a fluoroalkyl group is highly filled with a filler.SOLUTION: The addition-curable silicone composition contains (A) a specific linear organopolysiloxane, (B) an organosilicon compound having two or more hydrogen atoms bonded to silicon atoms in one molecule and having no alkenyl group, (C) 10 to 1,000 parts by mass of one or more fillers selected from titanium oxide, silica, and alumina based on 100 parts by mass of the component (A), (D) an organopolysiloxane represented by the following formula (1), and (E) a platinum group metal-based catalyst. The total number of hydrogen atoms bonded to silicon atoms in component (B) is 0.5 to 3.0 times.SELECTED DRAWING: None

Provided is a novel curable organopolysiloxane composition and the like that can be used in the production of semiconductor components and the like. A curable organopolysiloxane composition comprising: (A1) an organopolysiloxane having no curable functional group having an aliphatic unsaturated bond within the molecule, and containing at least 20 mol% or more of siloxane units represented by SiO 4 / 2 (A1-1) in the total siloxane units; (A2) an organopolysiloxane having at least one monovalent hydrocarbon group having an aliphatic unsaturated bond in one molecule; (B) an organohydrogenpolysiloxane containing at least two silicon-bonded hydrogen atoms in one molecule; (C) a first hydrosilylation catalyst that exhibits activity by irradiation of high-energy rays; and (D) a second hydrosilylation catalyst microencapsulated by a thermoplastic resin having a softening point in the temperature range of 50 to 200°C.

To provide a recording material in which a printing part is excellent in water resistance and alcohol resistance.SOLUTION: There are provided a developer containing a compound represented by the following general formula (1) (wherein, n represents 0 to 2. R1 represents a halogen atom, a straight or branched chain alkyl group having 1 to 8 carbon atoms, a straight or branched chain alkoxy group having 1 to 8 carbon atoms or a substituent of the formula (2). R2 represents a hydrogen atom, an alkyl group which may be substituted or an aryl group which may be substituted.), a recording material containing the developer, a thermosensitive recording layer containing the recording material and a thermosensitive recording paper having the thermosensitive recording layer.SELECTED DRAWING: None