发明名称 |
PBO Fibers with Improved Mechanical Properties when Exposed to High Temperatures and High Relative Humidity |
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 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. |
申请公布号 |
US2015067940(A1) |
申请公布日期 |
2015.03.12 |
申请号 |
US201314391984 |
申请日期 |
2013.04.11 |
申请人 |
Battelle Memorial Institute |
发明人 |
Sayre Jay R;McGinniss Vince;Tolbert C Byron;Jenkins Kelly J;Ellis Jeffrey L.;Hutson Tim B;Angel Sundee;Thurston Rachel |
分类号 |
D06M13/513;C08K5/5435;B29C35/02;F41H1/02 |
主分类号 |
D06M13/513 |
代理机构 |
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代理人 |
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主权项 |
1. A method of treating fibers to improve resistance to high temperatures and relative humidity, the method comprising:
exposing poly(p-phenylene-2,6-benzobisoxazole) (PBO) fibers to an atmosphere of CO2 saturated with an epoxy silane; subjecting the PBO fibers to a first pressurizing and heating stage at a first temperature for a first period of time; subjecting the PBO fibers to a second pressurizing and heating stage including increasing the temperature to a second temperature and holding at the second temperature for an additional period of time; and depressurizing the PBO fibers. |
地址 |
Columbus OH US |