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:
The present invention provides a modified natural rubber having a good balance of improved fuel economy, heat-aging resistance, processability, and breaking resistance, and a method for producing such a rubber. The present invention also provides a tire rubber composition and a pneumatic tire which are prepared using the modified natural rubber. The present invention relates to a highly purified, modified natural rubber whose pH is adjusted to 2 to 7.
Abstract:
PROBLEM TO BE SOLVED: To provide a rubber composition for tire, which is improved in dispersibility of a filler and is excellent in low fuel consumption; and to provide a method of producing the rubber composition.SOLUTION: This invention relates to the rubber composition for tire, which can be obtained by kneading a mixture by using a three-roll mill, wherein the mixture includes a rubber composition, an organic solvent, and a silica and/or a carbon black.
Abstract:
PROBLEM TO BE SOLVED: To improve the dispersiveness of clay into ionomer resin in a resin composition for a golf ball including the ionomer resin and clay; and to provide a golf ball having excellent durability and sense of hitting without significant decline of the flying capability.SOLUTION: The resin composition for the golf ball contains at least one of zinc ion-neutralized ionomer resin and sodium ion neutralized ionomer resin as an ionomer resin component, at least one of polyamide and polyether amine as a dispersing agent, and the clay. When zinc ion-neutralized ionomer resin is contained as the ionomer resin component, polyamide is contained as the dispersing agent. When sodium ion neutralized ionomer resin is contained, polyether amine is contained as the dispersing agent.