Title:
PBO FIBERS WITH IMPROVED MECHANICAL PROPERTIES WHEN EXPOSED TO HIGH TEMPERATURES AND HIGH RELATIVE HUMIDITY
Document Type and Number:
WIPO Patent Application WO/2014/011278
Kind Code:
A3
Abstract:
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 CO2 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 CO2 out of the PBO fibers. The fibers are particularly useful in making lightweight body armor system components.
Inventors:
SAYRE JAY R (US)
MCGINNISS VINCE (US)
TOLBERT BYRON C (US)
JENKINS KELLY J (US)
ELLIS JEFFREY L (US)
HUTSON TIM B (US)
ANGEL SUNDEE (US)
THURSTON RACHEL (US)
MCGINNISS VINCE (US)
TOLBERT BYRON C (US)
JENKINS KELLY J (US)
ELLIS JEFFREY L (US)
HUTSON TIM B (US)
ANGEL SUNDEE (US)
THURSTON RACHEL (US)
Application Number:
PCT/US2013/036141
Publication Date:
June 26, 2014
Filing Date:
April 11, 2013
Export Citation:
Assignee:
BATTELLE MEMORIAL INSTITUTE (US)
International Classes:
D06M13/513; D06M23/10
Domestic Patent References:
| WO2008093867A1 | 2008-08-07 |
Foreign References:
| CN101235590A | 2008-08-06 |
Other References:
DATABASE WPI Week 201353, Derwent World Patents Index; AN 2012-Q50822, XP002723652
Attorney, Agent or Firm:
DIEDERIKS, Everett, G. Jr. (13885 Hedgewood Drive Suite 31, Woodbridge VA, US)
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