11 results about "Spin-Spin Relaxation Time" patented technology

According to one embodiment, a polishing pad includes a polishing layer comprising a urethane-based prepolymer and a curing agent, wherein the spin-lattice relaxation time (T1) and spin-spin relaxation time (T2) measured using TD-NMR for the polishing layer satisfy Equations 1 and 2, respectively, and thus can improve the performance of the polishing pad.

To provide a polyaspartic acid derivative that does not feel sticky when applied to the skin and has an excellent texture that crumbles on the skin. [Solution] A polyaspartic acid derivative characterized in that the spin-spin relaxation time (T2) obtained by solid echo method in pulsed NMR analysis at 40°C of a 1.0 wt% aqueous solution of the polyaspartic acid derivative is 1400 milliseconds to 2400 milliseconds.

An electrophotographic cleaning blade comprising an elastic member comprising a polyurethane and a support member that supports the elastic member, wherein, a storage elastic modulus of the elastic member at a vibration frequency of 1×10−3 Hz is 12.0 to 18.0 MPa, in pulse NMR measurement in an environment at 50° C. of a sample sampled from the elastic member, there is a segment with a spin-spin relaxation time (T2L) of 250 to 360 μs, the polyurethane comprises a polyurethane elastomer comprising a polysiloxane segment having a specific structure, and the polysiloxane segment is bonded to a polyurethane skeleton in the polyurethane elastomer.

The invention relates to the technical field of tobacco leaf detection, in particular to a tobacco leaf oil content quantitative characterization method. The method comprises the following steps: measuring state information of protons in a tobacco leaf sample by using low-field nuclear magnetic resonance to obtain a spin-spin relaxation time T2 spectrum and a spin-lattice relaxation time T1 spectrum, and generating a T1-T2 two-dimensional spectrogram; determining peak positions of low-activity protons and medium-activity protons in the T1-T2 two-dimensional spectrogram to obtain T2 values of the low-activity protons and the medium-activity protons, and solving an average T2 value of the low-activity protons and the medium-activity protons of the plurality of groups of tobacco leaf samples; on the spin-spin relaxation time T2 spectrum of the tobacco leaf sample to be detected, the low-activity proton peak intensity and the medium-activity proton peak intensity of the tobacco leaf sample to be detected at the average T2 value are obtained, and the ratio of the low-activity proton peak intensity to the medium-activity proton peak intensity serves as the oil content quantitative value of the tobacco leaf sample to be detected. According to the method, nondestructive testing of the tobacco leaf raw material oil content is realized by utilizing a low-field nuclear magnetic technology, and quantitative characterization of the tobacco leaf raw material oil content is realized by combining the T1-T2 two-dimensional spectrogram.

The embodiment of the invention provides a CO2 throughput test method and device, a storage medium and electronic equipment, and the method comprises the following steps: executing an acquisition step: adjusting the temperature of a temperature box to an Nth temperature value; the high-pressure piston pump is controlled to inject the carbon dioxide gas with the Nth temperature value into the Nth rock core at the Nth pressure value, so that the Nth rock core is subjected to huff and puff; under the condition that huff and puff of the Nth rock core is completed based on the carbon dioxide gas, a first spin-spin relaxation time spectrum, collected by the nuclear magnetic resonance scanning device, of the Nth rock core is obtained, a container containing the carbon dioxide gas is loaded in the temperature box, and crude oil is injected into the Nth rock core; circularly executing the obtaining step until a first spin-spin relaxation time spectrum of the Mth rock core is obtained; and according to the first spin-spin relaxation time spectrums of the M rock cores, determining first change information of crude oil utilization characteristics of pores with different apertures in the rock cores in different environments.

To provide a polishing pad excellent in starting performance and a method for manufacturing the same.SOLUTION: A polishing pad comprises a resin sheet having a plurality of tear-shaped foams and a polishing surface for polishing an article to be polished. When a free induction attenuation signal (FID) acquired by a pulse NMR is subtracted in order from a longer component of spin-spin relaxation time T2s by a least square method and waveform-separated, thereby divided into three components of an amorphous phase, an interface phase, and a crystal phase in order from the longer component of spin-spin relaxation time T2s, in the resin sheet has ΔT2s,15min, which is a difference between relaxation time T2s,15min of the amorphous phase component of the resin sheet acquired from the measuring result of the relaxation time using the pulse NMR after dressing of the polishing pad for 15 minutes and relaxation time T2s,dry of the amorphous phase component of the resin sheet acquired from the measuring result of the relaxation time using the pulse NMR in a dry state before the dressing of the polishing pad, of 0.35ms or more.SELECTED DRAWING: None

The invention relates to an electrophotographic cleaning blade, a process cartridge, an electrophotographic image forming apparatus, and a urethane molded body. An electrophotographic cleaning blade includes an elastic member including polyurethane and a support member supporting the elastic member, in which the elastic member has a storage elastic modulus of 12.0 to 18.0 MPa at a vibration frequency of 1 * 10 <-3 > Hz, a segment having a spin-spin relaxation time (T2L) of 250 to 360 [mu] s is present in a pulsed NMR measurement of a sample sampled from the elastic member in an environment of 50 DEG C, and the support member is configured to support the elastic member. The polyurethane includes a polyurethane elastomer including a polysiloxane segment having a specific structure, and the polysiloxane segment is bonded to a polyurethane backbone in the polyurethane elastomer.

Provided is a binder composition for an electricity storage device, which is capable of producing an electricity storage device electrode having excellent input / output characteristics and excellent charge / discharge durability characteristics at high temperatures by reducing internal resistance. This binder composition for an electricity storage device contains a polymer (A) and a liquid medium (B), and is characterized in that the value of spin-spin relaxation time (T2) of the polymer (A) measured by pulse NMR is 0.8 msec or less at 100 DEG C, and the value of the spin-spin relaxation time (T2) of the polymer (A) measured by pulse NMR is 0.5 msec or less when the total of the repeating units contained in the polymer (A) is 100 mass%. The polymer (A) contains 4 mass% or more of a repeating unit (a1) derived from an unsaturated carboxylic acid having a value of "monomer molecular weight (g / mol) / number of carboxylic acid functional groups" of less than 85 and / or a repeating unit (a2) derived from an unsaturated carboxylic acid having a value of "monomer molecular weight (g / mol) / number of carboxylic acid functional groups" of 85 or more.

Provided is a binder composition for a power storage device, said binder composition being capable of producing a power storage device electrode having reduced internal resistance and excellent adhesion. The binder composition for an electricity storage device according to the present invention contains a polymer (A) and a liquid medium (B), the value of spin-spin relaxation time (T2) of the polymer (A) measured by pulse NMR is 0.8 msec or less at 100 DEG C, and the value of the spin-spin relaxation time (T2) is less than 0.8 msec when the total of the repeating units contained in the polymer (A) is 100 mass%. The polymer (A) contains 0-4 mass% of a repeating unit (a1) derived from an unsaturated carboxylic acid.

A spin sensor is provided which is formed from a single diamond particle, wherein a maximum diameter of the diamond particle is greater than or equal to 0.01 µm and less than 10 µm, the diamond particle has a color center, an electronic state of the color center has a spin ground level of spin zero and a spin excitation level of spin ±1, and a spin-spin relaxation time T2 of the diamond particle is 180 nsec or more.

To provide a deterioration sign diagnosis method and a deterioration sign diagnosis system of a resin material capable of easily diagnosing a sign of deterioration of the resin material.SOLUTION: The resin material deterioration sign diagnosis method according to the embodiment includes measuring a resin material by a nuclear magnetic resonance apparatus capable of non-destructive observation, acquiring free induction decay curve data, obtaining a spin-spin relaxation time, evaluating a change in molecular mobility of the resin material based on the spin-spin relaxation time, and diagnosing a deterioration sign of the resin material.SELECTED DRAWING: Figure 5