发明名称 |
Dimensionally stable polyester yarn for high tenacity treated cords |
摘要 |
Polyethylene terephthalate yarn is prepared by spinning under high stress conditions in the transition region between oriented-amorphous and oriented-crystalline undrawn yarns by selection of process parameters to form an undrawn yarn that is a crystalline, partially oriented yarn with a crystallinity of 3 to 15 percent and a melting point elevation of 2 DEG to 10 DEG C. The spun yarn is then hot drawn to a total draw ratio between 1.5/1 and 2.5/1 with the resulting properties: (A) a terminal modulus of at least 20 g/d, (B) a dimensional stability defined by E4.5+FS<13.5 percent, (C) a tenacity of at least 7 grams per denier, (D) a melting point elevation of 9 DEG to 14 DEG C., and (E) an amorphous orientation function of less than 0.75. The resulting treated tire cord provides high tenacity in combination with improved dimensional stability.
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申请公布号 |
US5403659(A) |
申请公布日期 |
1995.04.04 |
申请号 |
US19930065719 |
申请日期 |
1993.05.24 |
申请人 |
ALLIEDSIGNAL INC. |
发明人 |
NELSON, CHARLES J.;BHEDA, JAYENDRA H.;RIM, PETER B.;TURNER, JAMES M. |
分类号 |
D01D5/12;D01F6/62;(IPC1-7):D02G3/00 |
主分类号 |
D01D5/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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