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-amorprhous 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 to 10° 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 to 14° 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.
|
申请公布号 |
US2002018893(A1) |
申请公布日期 |
2002.02.14 |
申请号 |
US20010902825 |
申请日期 |
2001.07.10 |
申请人 |
NELSON CHARLES JAY;BHEDA JAYENDRA HIRALAL;RIM PETER BRYAN;TURNER JAMES MICHAEL |
发明人 |
NELSON CHARLES JAY;BHEDA JAYENDRA HIRALAL;RIM PETER BRYAN;TURNER JAMES MICHAEL |
分类号 |
B60C9/00;B29D30/38;C08J5/06;D01D5/12;D01F6/62;D02G3/48;D02J1/22;G01N1/00;G01N1/22;G01N1/26;G01N7/14;(IPC1-7):D02G3/00 |
主分类号 |
B60C9/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|