To provide a vulcanized rubber that is excellent in both of visibility of a marking generated on a vulcanized rubber and durability of the vulcanized rubber, and a production method of such vulcanized rubber.SOLUTION: A vulcanized rubber is obtained by vulcanizing an inflammable rubber composition that contains, relative to 100 pts.mass of a rubber component, 2 pts.mass or larger and 150 pts.mass or smaller of carbon black, 0.2 pt.mass or larger of a pigment, and a vulcanizing agent, and has a marking of a color generated by heating the vulcanized rubber with heating means. When the color is expressed as (L*, a*, b*) based on a L*a*b* notation of JIS Z8781, the color is a color of chroma satisfying [(a*)+(b*)]≥10. A production method of the vulcanized rubber comprises a step of generating a marking of the color by heating the vulcanized rubber with heating means.SELECTED DRAWING: None
【課題】加硫ゴムに生成されるマーキングの視認性と前記加硫ゴムの耐久性の両方に優れる加硫ゴム、及びそのような加硫ゴムの製造方法を提供すること。【解決手段】ゴム成分 100 質量部に対して、カーボンブラックを 2 質量部以上 150 質量部以下、顔料を 0.2 質量部以上、及び加硫剤を含む可燃性を有するゴム組成物、を加硫して得られる加硫ゴムであって、前記加硫ゴムを加熱手段で加熱することによって生成させた色、のマーキング、を有する加硫ゴム:ここで、前記色は、JIS Z8781 規格の L*a*b* 表示法に基づいて、(L*, a*, b*) と表されるとき、[(a*)2+(b*)2]1/2≧ 10 を満たす彩度の色である。及び、前記加硫ゴムにおいて、前記加硫ゴムを加熱手段で加熱することによって、前記色のマーキングを生成する工程、を有する加硫ゴムの製造方法。【選択図】なし
VULCANIZED RUBBER AND PRODUCTION METHOD OF VULCANIZED RUBBER
加硫ゴム及び加硫ゴムの製造方法
2020-08-06
Patent
Elektronische Ressource
Japanisch
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