Aramid tire cord and manufacturing method thereof
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United States of America Patent
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Aug 18, 2015
Grant Date -
Mar 3, 2011
app pub date -
Apr 28, 2009
filing date -
Apr 29, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is aramid tire cord and a method for manufacturing the same, wherein the aramid tire cord has superior properties on initial modulus change rate, tensile strain, initial modulus and strength retention rate, wherein the initial modulus change rate is not more than 5% after the aramid tire cord is repetitively extended 10 times at 120° C. under the condition that the load corresponding to 10% of the strength at break is applied thereto. Thus, the aramid tire cord of the present invention has the most optimal modulus, optimal crystallization constant and optimal crystalline orientation constant so that the aramid tire cord is superior in its initial modulus change rate, tensile strain and initial modulus retention rate, to thereby obtain good fatigue resistance. Thus, if the aramid tire cord of the present invention is used for a tire-reinforcing material, it is possible to obtain high traveling performance by preventing the property deterioration during the high-speed traveling with repetitively-occurring sequence of high temperature and high pressure.
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International Classification(s)
- D01D:MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE....
- B29B:PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE ....
- B60C:VEHICLE TYRES
- D02J:FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS....
- B29K:INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, ....
- D01F:CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL....
- D02G:CRIMPING OR CURLING FIBRES, FILAMENTS, YARNS, OR T....
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
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