公开(公告)号：EP2836637A2

公开(公告)日：2015-02-18

申请号：EP13785964.1

申请日：2013-04-11

申请人： Battelle Memorial Institute

发明人： SAYRE, Jay, R. ,  MCGINNISS, Vince ,  TOLBERT, Byron, C. ,  JENKINS, Kelly, J. ,  ELLIS, Jeffrey, L. ,  HUTSON, Tim, B. ,  ANGEL, Sundee ,  THURSTON, Rachel

IPC分类号： D06M23/10 ,  D06M13/513

CPC分类号： D06M13/513 ,  B29C35/0227 ,  B29K2083/00 ,  B29L2031/731 ,  C08K5/5435 ,  D06M23/105 ,  F41H1/02 ,  Y02P20/544

摘要： A method of treating fibers to improve resistance to high temperatures and relative humidity includes providing poly(p-phenylene~2,6-benzobisoxazole) (PBO) fibers, exposing the PBO fibers to an atmosphere of supercritical CO
2 saturated with an epoxy silane, i.e. 3-glycidoxypropyl methyldimethoxysilane. The PBO fibers are subjected to a first pressurizing and heating stage at a first temperature (50°C) for a first period of time. The PBO fibers are then subjected to a second pressurizing and heating stage including increasing the temperature to a second temperature (110°C) and holding at the second temperature for an additional period of time. The PBO fibers include 2-5 wt% of 3-glycidoxypropyl methyldimethoxysilane after diffusing the CO
2 out of the PBO fibers. The fibers are particularly useful in making lightweight body armor system components.