Brass-plated steel cord and steel cord-rubber composite, and tire using the same
AssigneeBridgestone Corporation
InventorShinichi Toyosawa
Life of this patent
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Abstract
The present invention relates to a brass-plated steel cord capable of further improving initial adhesiveness and heat-resistant adhesiveness between a coating rubber and a steel cord and also imparting excellent durability to a resulting rubber article, and more particularly to a brass-plated steel cord, wherein an outermost surface thereof contains 0.3 to 1.7 atomic % of phosphorus, 4.93 to 14 atomic % of zinc, and 0.01 to 2.0 atomic % of a metal having an ionization tendency lower than that of zinc and higher than that of copper as measured by XPS (X-ray photoelectron spectroscopy), and an amount of zinc in the outermost surface is 30 to 90 atomic % based on 100 atomic % of a total amount of zinc and copper.
Claims5
A steel cord-rubber composite formed by coating a brass-plated steel cord with a rubber composition comprising sulfur,
- wherein an outermost surface of the brass-plated steel cord contains 0.3 to 1.7 atomic % of phosphorus, 7.0 to 14 atomic % of zinc, and 0.01 to 2.0 atomic % of a metal having an ionization tendency lower than that of zinc and higher than that of copper as measured by XPS (X-ray photoelectron spectroscopy), and
- an amount of zinc in the outermost surface is 30 to 90 atomic % based on 100 atomic % of a total amount of zinc and copper.
Dependencies are inferred from the claim text.