公开(公告)号：US20230332990A1

公开(公告)日：2023-10-19

申请号：US18127347

申请日：2023-03-28

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Ryo MASHITA ,  Hiroyuki KISHIMOTO

IPC: G01N3/08 ,  G01N3/56 ,  G01N9/36 ,  G01N9/24

CPC classification number: G01N3/08 ,  G01N3/56 ,  G01N9/36 ,  G01N9/24

Abstract: A performance evaluation method for elastic material including rubber or elastomer, the method includes: a step of applying a strain to a test piece made of an elastic material to form at least one low-density portion inside the test piece; after forming the low-density portion, a step of obtaining projected images of the test piece by irradiating the test piece with X-rays at a predetermined first time and at a second time after the first time; a step of identifying the low-density portion based on the projected images at the first time; a step of identifying the low-density portion based on the projected images at the second time; a step of identifying a volume change of the at least one low-density portion between the first time and the second time; and a step of outputting the volume change as one of indicators of performance of the elastic material.

公开(公告)号：US20160077024A1

公开(公告)日：2016-03-17

申请号：US14825642

申请日：2015-08-13

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Fusae KANEKO ,  Hiroyuki KISHIMOTO

IPC: G01N23/087

CPC classification number: G01N23/087 ,  G01N23/085 ,  G01N33/445 ,  G01N2223/203

Abstract: Provided is an evaluation method that provides detailed information on the crosslink densities in sulfur-containing polymer composite materials. The present invention relates to a method of measuring crosslink densities in a sulfur-containing polymer composite material, the method including: a measurement step of irradiating the sulfur-containing polymer composite material with high intensity X-rays and measuring an X-ray absorption spectrum of the composite material while varying the energy of the X-rays; a visualization step of determining the three-dimensional structure of sulfur atoms in the sulfur-containing polymer composite material by the reverse Monte Carlo method from the X-ray absorption spectrum; and a calculation step of calculating, from the three-dimensional structure of sulfur atoms, a crosslink density for each number of sulfur atoms bonded.

Abstract translation: 提供了提供含硫聚合物复合材料的交联密度的详细信息的评价方法。 本发明涉及测量含硫聚合物复合材料中交联密度的方法，该方法包括：用高强度X射线照射含硫聚​​合物复合材料并测量X射线吸收光谱的测量步骤 的复合材料，同时改变X射线的能量; 通过反射蒙特卡罗方法从X射线吸收光谱确定含硫聚合物复合材料中硫原子的三维结构的可视化步骤; 以及从硫原子的三维结构计算每个硫原子键合的交联密度的计算步骤。

公开(公告)号：US20220404253A1

公开(公告)日：2022-12-22

申请号：US17752584

申请日：2022-05-24

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Ryo MASHITA ,  Hiroyuki KISHIMOTO

IPC: G01N3/56 ,  G01N3/08 ,  G01N3/06 ,  G01N33/44

Abstract: A performance evaluation method for elastic material including rubber or elastomer, the method includes a step of applying a strain to a test piece made of the elastic material to form at least one void inside the test piece, a step of obtaining projected images of the test piece by irradiating the test piece with X-rays at a plurality of times after the at least one void is formed, and a step of obtaining a volume change of the at least one void between the plurality of times based on the projected images, as one of indexes of performance.

公开(公告)号：US20140099723A1

公开(公告)日：2014-04-10

申请号：US14046658

申请日：2013-10-04

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Fusae KANEKO ,  Hiroyuki KISHIMOTO

IPC: G01N33/44

CPC classification number: G01N33/445 ,  G01N23/085 ,  G01N23/087 ,  G01N23/2273 ,  Y10T436/255

Abstract: The present invention provides a deterioration analysis method capable of analyzing in detail deterioration of a polymer material, and in particular deterioration in the surface condition of a polymer material with low conductivity. The present invention relates to a deterioration analysis method including irradiating a polymer material with a metal coating having a thickness of 100 Å or less formed thereon, with high intensity X-rays, and measuring X-ray absorption while varying the energy of the X-rays, to analyze deterioration of the polymer.

Abstract translation: 本发明提供能够详细分析聚合物材料的劣化，特别是低导电性的聚合物材料的表面状态劣化的劣化分析方法。 本发明涉及一种劣化分析方法，其包括用高强度X射线照射具有厚度为或以下的金属涂层的聚合物材料，并且测量X射线吸收，同时改变X射线的能量， 以分析聚合物的劣化。

公开(公告)号：US20230324315A1

公开(公告)日：2023-10-12

申请号：US18114370

申请日：2023-02-27

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Fusae KANEKO ,  Hiroyuki KISHIMOTO

IPC: G01N33/44 ,  G01N23/085

CPC classification number: G01N23/085 ,  G01N33/445 ,  G01N2033/0003

Abstract: Provided is a method for estimating abrasion resistance of polymer composite materials. The present disclosure relates to a method for estimating abrasion resistance, the method including: irradiating a sulfur compound-containing polymer composite material with high intensity X-rays; measuring an X-ray absorption in a small region of the polymer composite material while varying an energy of the X-rays, whereby a dispersion state and a chemical state of the sulfur compound are analyzed; and quantifying an inhomogeneous state of cross-link degradation in the polymer composite material based on the dispersion state and the chemical state.

公开(公告)号：US20180297404A1

公开(公告)日：2018-10-18

申请号：US15767784

申请日：2016-10-21

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Ryo MASHITA ,  Hiroyuki KISHIMOTO ,  Ryota KITAGO

IPC: B60C1/00 ,  B60C11/00 ,  G01N9/24 ,  G01N23/046 ,  G01N23/083 ,  G01N15/08

Abstract: The pneumatic tire of the present invention characterized by comprising: bead cores, a carcass ply, an inner liner disposed at an inner side than the carcass ply in a direction of a tire diameter, and a tread disposed at an outer side than the carcass ply in a direction of a tire diameter and having a volume of the low density region of 35% or more at elongation by an applied stress of 1.5 MPa, a volume of the void portion of 7.5% or less at elongation by an applied stress of 3.0 MPa and a filler dispersibility index ΔG* shown by the following equation (I) of 3 or less and the crosslinked rubber composition having a volume of the low density region of 35% or more at elongation by an applied stress of 1.5 MPa, a volume of the void portion of 7.5 or less at elongation by an applied stress of 3.0 MPa and a filler dispersibility index ΔG* shown by the following equation (I) of 3 or less are excellent in abrasion resistance. ΔG*=(G*(4%)−G*(256%))/G*(256%)  (I) In the equation (I), G* (n %) indicates a shear modulus when an n % strain is applied.

公开(公告)号：US20180290490A1

公开(公告)日：2018-10-11

申请号：US15767056

申请日：2016-10-21

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Ryo MASHITA ,  Hiroyuki KISHIMOTO ,  Ryota KITAGO

IPC: B60C1/00 ,  C08L9/00 ,  G01N23/083 ,  G01N23/046

Abstract: The pneumatic tire characterized by comprising the tread and the crosslinked rubber composition, of the present invention, wherein the tread and the crosslinked rubber composition comprise two or more kinds of rubber components and a filler and have a volume of the low density region of 35% or more, a volume of the void portion of 7.5 or less and a filler distribution D represented by the following formula (I) of 2.0 or less are excellent in abrasion resistance. D=(A1/B1)/(A0/B0)  (I) In the formula (I), A1 represents a volume fraction of a rubber component A in a filler gel, B1 represents a volume fraction of a rubber component B in a filler gel, A0 represents a volume fraction of a compounded rubber component A, B0 represents a volume fraction of a compounded rubber component B.

公开(公告)号：US20160282286A1

公开(公告)日：2016-09-29

申请号：US15036634

申请日：2014-11-06

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Ryo MASHITA ,  Hiroyuki KISHIMOTO

IPC: G01N23/04 ,  G01M17/03 ,  G01B15/06

CPC classification number: G01N23/046 ,  G01B15/06 ,  G01M17/027 ,  G01M17/028 ,  G01N23/04 ,  G01N2223/401 ,  G01N2223/419 ,  G01N2223/627

Abstract: To observe an elastic material under a dynamically deformed state. [Solution] A method for observing deformation of an elastic material 1 including rubber or elastomer, and an apparatus for capturing a projection image of the elastic material suitably used therefor. The observing method includes: a projection image obtaining step S1 of capturing a projection image of at least a part of the elastic material 1, from a direction perpendicular to an arbitrary axis of the elastic material 1, at a plurality of capture positions P around the axis; a three-dimensional image constructing step S2 of constructing a three-dimensional image 51 of the elastic material 1 from the projection images, and a step of observing the three-dimensional image 51. The projection image obtaining step S1 comprises: a deforming step S12 of deforming the elastic material 1 in predetermined cycles; a signal output step S13 of outputting an capture signal St at a predetermined specific time point during one cycle; and a capturing step S14 of capturing the projection image of the elastic material 1 based on the capture signal St. The deforming step S12, the signal output step S13 and the capturing step S14 are performed at each of the capture positions.

Abstract translation: 在动态变形状态下观察弹性材料。 [解决方案]一种用于观察包括橡胶或弹性体的弹性材料1的变形的方法以及用于捕获适合使用的弹性材料的投影图像的装置。 该观察方法包括：投影图像获取步骤S1，从垂直于弹性材料1的任意轴的方向拍摄弹性材料1的至少一部分的投影图像，围绕该弹性材料1的多个捕获位置P 轴; 从投影图像构成弹性材料1的三维图像51的三维图像构造步骤S2以及观察三维图像51的步骤。投影图像获取步骤S1包括：变形步骤S12 使弹性材料1以预定的周期变形; 信号输出步骤S13，其在一个周期期间在预定的特定时间点输出捕获信号St; 以及基于捕获信号St捕获弹性材料1的投影图像的拍摄步骤S14.在每个拍摄位置处执行变形步骤S12，信号输出步骤S13和拍摄步骤S14。

公开(公告)号：US20190285609A1

公开(公告)日：2019-09-19

申请号：US16288751

申请日：2019-02-28

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Fusae KANEKO ,  Hiroyuki KISHIMOTO

IPC: G01N33/44 ,  G01N23/083

Abstract: Provided is a method for estimating abrasion resistance and fracture resistance by highly accurately analyzing aggregation (dispersion) of sulfur-based materials in polymer composite materials. The present invention relates to a method for estimating abrasion resistance and fracture resistance, the method including: irradiating a polymer composite material containing at least one sulfur-based material selected from the group consisting of sulfur and sulfur compounds with high intensity X-rays; measuring X-ray absorption of a measurement region of the polymer composite material while varying the energy of the X-rays; calculating areas of spots having a high sulfur concentration equal to or greater than a predetermined level in a two-dimensional mapping image of sulfur concentration of the measurement region; and estimating abrasion resistance and fracture resistance based on the areas.

公开(公告)号：US20180297405A1

公开(公告)日：2018-10-18

申请号：US15767911

申请日：2016-10-21

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Ryo MASHITA ,  Hiroyuki KISHIMOTO ,  Ryota KITAGO

IPC: B60C1/00 ,  C08L9/06

Abstract: A pneumatic tire includes bead cores, a carcass ply, an inner liner, and a tread having a volume of the low density region of 35% or more at elongation by an applied stress of 1.5 MPa, a volume of the void portion of 7.5% or less at elongation by an applied stress of 3.0 MPa and a hardness of 65 or more and the crosslinked rubber composition of the present invention having a volume of the low density region of 35% or more at elongation by an applied stress of 1.5 MPa, a volume of the void portion of 7.5 or less at elongation by an applied stress of 3.0 MPa and a hardness of 65 or more are excellent in abrasion resistance.