发明名称 |
POLYETHYLENNAPHTHALAT-FASERN MIT HOHER FESTIGKEIT |
摘要 |
The present invention relates to a high tenacity polyethylene naphthalate fiber containing a silica compound. This fiber is produced by a method comprising the steps of: (A) melt-spinning a solid phase-polymerized polyethylene-2,6-naphthalate chip containing ethylene-2,6-naphthalate units at more than 85 mole % and a silica compound and having an intrinsic viscosity of 0.70-1.20, to produce a melt-spun yarn; (B) passing the melt-spun yarn through a retarded cooling zone and a cooling zone to solidify the yarn; (C) withdrawing the yarn at such a speed that the undrawn yarn has a birefringence of 0.001-0.1; and (D) subjecting the undrawn yarn to multi-stage drawing at a total draw ratio of at least 1.5 and a drawing temperature of 50-250° C. The polyethylene naphthalate fiber has improved physical properties, such as high tenacity, and a dipped cord produced from this fiber has excellent dimensional stability and tenacity such that it can be advantageously employed as a reinforcement material of rubber products. |
申请公布号 |
AT413480(T) |
申请公布日期 |
2008.11.15 |
申请号 |
AT20040001841T |
申请日期 |
2004.01.28 |
申请人 |
HYOSUNG CORPORATION |
发明人 |
KWON, IK-HYUN;KIM, WOO-SUNG;BANG, YUN-HYUK;KIM, YOUNG-JO;PARK, CHAN-MIN |
分类号 |
D01F6/62;B60C9/00;C08K3/36;C08L67/02;D01F1/10;D01F6/92;D02G3/48 |
主分类号 |
D01F6/62 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|